BD16938AEFV-C [ROHM]
BD16938AEFV-C是面向车载应用设计的8ch半桥驱动器。可直接驱动小型DC有刷电机，能够以High输出、Low输出、Hi-Z输出等3种模式独立控制各输出。通过16bit 串行接口（SPI）可从外部MCU进行控制。实现了高耐压（最大额定40V）、低导通电阻、小型封装，可有助于实现整机的高可靠性、低功耗、低成本化。;
| 型号： | BD16938AEFV-C |
| 厂家： | 
ROHM |
| 描述： | BD16938AEFV-C是面向车载应用设计的8ch半桥驱动器。可直接驱动小型DC有刷电机，能够以High输出、Low输出、Hi-Z输出等3种模式独立控制各输出。通过16bit 串行接口（SPI）可从外部MCU进行控制。实现了高耐压（最大额定40V）、低导通电阻、小型封装，可有助于实现整机的高可靠性、低功耗、低成本化。 电机 驱动 驱动器 |
| 文件： | 总28页 (文件大小：1969K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
Motor / Actuator Drivers for DC Brush Motor Series
Automotive 8ch Half Bridge Driver
with SPI Control
BD16938AEFV-C
General Description
Key Specifications
The BD16938AEFV-C is 8ch half bridge driver for
automotive applications. It can drive compact DC
brush motors directly and each output can be
controlled in three modes (High, Low and High
Impedance).
MCU can control the driver via 16bit Serial
Peripheral Interface (SPI). The absolute voltage
is 40V rated with low ON resistance
packaged in compact package, which contributes
to realize high reliability, low energy consumption
and low cost.
■
■
■
■
■
Supply Voltage
Operating Temperature Range -40°C to +125°C
Output Current
Output ON Resistance (High Side)
Output ON Resistance (Low Side)
6.3V to 32V
1.0A(Max)
0.8Ω(Typ)
0.6Ω(Typ)
Package
HTSSOP-B28
W(Typ) x D(Typ) x H(Max)
9.70mm x 6.40mm x 1.00mm
Features
■
■
■
AEC-Q100 Qualified(Note 1)
1.0A DMOS Half Bridge 8 Circuits
Three Mode Output Control
(High, Low & High Impedance)
■
■
Low Standby Current
Built-in Protection Diode Against Output Reverse
Voltage
■
■
■
Over Current Protection at VS Supply Stage (OCP)
Under Load Detection at VS Supply Stage (ULD)
Over Voltage Protection with OVDSEL Mode
at VS Supply Stage (OVP)
Applications(Note 2)
Automotive Body Electronics, HVAC, Door Mirrors, etc.
■
■
Under Voltage Lock Out at VS Supply Stage (UVLO)
Thermal Shutdown (TSD), Thermal Warning (TW)
(Note 1) Grade 1
Typical Application Circuit
VS1
VS2
OUT1
M
VCC
Voltage
Regulator
OUT2
OUT3
M
EN
OUT4
CSB
BD16938AEFV-C
OUT5
SCK
SDI
Micro
Contoller
M
SDO
OUT6
OUT7
M
OUT8
PGND1 PGND2
GND
Figure 1. Typical Application Circuit
(Note 2) Please make sure you consult our company sales representative before mass production, if it is used except Door Mirror and HVAC.
〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays
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BD16938AEFV-C
Pin Configuration
(TOP VIEW)
1
2
28
27
26
25
PGND1
OUT8
OUT7
VS1
PGND1
OUT1
OUT2
VS1
3
4
5
24 NC
NC
6
23 SCK
22 CSB
21 GND
20 NC
SDI
EXP-PAD
(GND)
7
VCC
8
SDO
EN
9
10
11
12
13
14
19 TEST2
18 VS2
TEST1
VS2
17 OUT6
16 OUT5
15 PGND2
OUT3
OUT4
PGND2
Figure 2. Pin Configuration
Pin Description
Pin No.
1
Pin Name
Function
Pin No.
28
Pin Name
Function
PGND1
OUT1
OUT2
GND for output stages
Half bridge output 1
Half bridge output 2
PGND1
OUT8
OUT7
GND for output stages
2
3
27
26
Half bridge output 8
Half bridge output 7
Power supply for output
stages
Power supply for output
stages
4
VS1
25
VS1
5
6
NC
SDI
No Connection
SPI data input
24
23
22
21
20
19
NC
SCK
CSB
GND
NC
No Connection
SPI clock input
7
VCC
SDO
EN
Logic supply
SPI chip select input
Small signal GND
No Connection
8
SPI data output
Enable input
9
10
TEST1
Test mode input1(Note 1)
TEST2
Test mode input2(Note 1)
Power supply for output
stages
Power supply for output
stages
11
VS2
18
VS2
12
13
14
-
OUT3
OUT4
Half bridge output 3
Half bridge output 4
GND for output stages
17
16
15
OUT6
OUT5
Half bridge output 6
Half bridge output 5
GND for output stages
PGND2
PGND2
EXP-PAD
The EXP-PAD of the center of product connect to GND.
(Note 1) Connect TEST1 and TEST2 to GND through a resistance.
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BD16938AEFV-C
Block Diagram
VCC
VS1
VS2
Internal Power
Supply
Thermal
Shutdown
Thermal
Warning
Under
Voltage
Lock Out
Over
Voltage
Protection
Power
On
Reset
Predriver &
Over Current Protection
& Under Load Detection
OUT1
OUT2
Predriver &
Over Current Protection
& Under Load Detection
Predriver &
Over Current Protection
& Under Load Detection
OUT3
OUT4
EN
Predriver &
Over Current Protection
& Under Load Detection
VCC
SPI
&
CSB
Predriver &
Over Current Protection
& Under Load Detection
Control
Logic
SCK
OUT5
OUT6
OUT7
OUT8
SDI
Predriver &
Over Current Protection
& Under Load Detection
SDO
Predriver &
Over Current Protection
& Under Load Detection
Predriver &
Over Current Protection
& Under Load Detection
GND
PGND1 PGND2
Figure 3. Block Diagram
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BD16938AEFV-C
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Limit
-0.3 to +40
-0.3 to +7.0
-0.3 to +40
1.0
Unit
V
(Note 1)
Power Supply Voltage
Logic Supply Voltage
Output Voltage
VVS
VCC
V
VOUT1 to VOUT8
V
Output Current
IO
VSDI, VSCK, VCSB, VEN
VTEST1, VTEST2
VSDO
A
Logic Input Voltage
-0.3 to VCC+0.3
-0.3 to +40
-0.3 to VCC+0.3
5.0
V
Test Input Voltage
V
Logic Output Voltage
SDO Output Current
Storage Temperature Range
Maximum Junction Temperature
V
ISDO
mA
°C
°C
Tstg
-55 to +150
Tjmax
150
Caution 1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is
operated over the absolute maximum ratings.
Caution 2: Should by any chance the maximum junction temperature rating be exceeded the rise in temperature of the chip may result in deterioration of the
properties of the chip. In case of exceeding this absolute maximum rating, design a PCB board with thermal resistance taken into consideration by
increasing board size and copper area so as not to exceed the maximum junction temperature rating.
(Note 1) VVS = VVS1, VVS2
Thermal Resistance (Note 2)
Thermal Resistance(Typ)
Parameter
Symbol
Unit
1s(Note 4)
2s2p(Note 5)
HTSSOP-B28
Junction to Ambient
Junction to Top Characterization Parameter(Note 3)
θJA
107.0
6
25.1
3
°C/W
°C/W
ΨJT
(Note 2) Based on JESD51-2A(Still-Air)
(Note 3) This thermal characterization parameter reports the difference between junction temperature and the temperature at the top center of the outside
surface of the component package.
(Note 4) Using a PCB board based on JESD51-3.
(Note 5) Using a PCB board based on JESD51-5, 7
Layer Number of
Measurement Board
Material
FR-4
Board Size
Single
114.3mm x 76.2mm x 1.57mmt
Top
Copper Pattern
Thickness
Footprints and Traces
70μm
Layer Number of
Measurement Board
Thermal Via(Note 6)
Material
FR-4
Board Size
114.3mm x 76.2mm x 1.6mmt
2 Internal Layers
Pitch
Diameter
4 Layers
1.20mm
Φ0.30mm
Top
Copper Pattern
Bottom
Thickness
Copper Pattern
Thickness
Copper Pattern
Thickness
Footprints and Traces
70μm
74.2mm x 74.2mm
35μm
74.2mm x 74.2mm
70μm
(Note 6) This thermal via connects with the copper pattern of all layers
Recommended Operating Conditions
Parameter
Symbol
Min
-40
6.3
3.0
0
Typ
+25
12
5
Max
+125
32
Unit
°C
V
Operating Temperature
Topr
Power Supply Voltage(Note 7)
Logic Supply Voltage(Note 7)
Logic Input Voltage(Note 7)
VVS
VCC
5.5
V
VEN, VCSB, VSCK, VSDI
-
VCC
V
(Note 7) In order to start operation, apply the voltage to VCC(Logic supply voltage) after VS(Power supply voltage) exceeds the minimum operating voltage
range (6.3V). After VCC(Logic supply voltage) exceeds the minimum operating voltage range(3.0V) then apply the voltage to the Logic input pins.
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BD16938AEFV-C
Electrical Characteristics
(Unless otherwise specified, VVS = 6.3V to 32V, VCC = 3.0V to 5.5V, -40°C ≤ Tj ≤ +150°C)
Specification
Parameter
Symbol
Unit
Conditions
Min
Typ
Max
Circuit Current
VS Circuit Current1
VS Circuit Current 2
VCC Circuit Current 1
VCC Circuit Current 2
Output
IVS1
IVS2
IVCC1
IVCC2
-
-
-
-
0
7
10
15
10
0.5
μA
mA
μA
EN = 0V
EN = 0V
0
0.1
mA
ILoad = 0.1A to 0.8A,
-40°C ≤ Tj < +25°C
ILoad = 0.1A to 0.8A,
25°C ≤ Tj ≤ 150°C
ILoad = 0.1A to 0.8A,
-40°C ≤ Tj < +25°C
ILoad = 0.1A to 0.8A,
25°C ≤ Tj ≤ 150°C
Output ON Resistance High Side 1
Output ON Resistance High Side 2
Output ON Resistance Low Side 1
Output ON Resistance Low Side 2
RONH1
RONH2
RONL1
RONL2
-
-
-
-
0.8
1.2
0.6
1.1
1.5
1.85
1.4
Ω
Ω
Ω
Ω
1.65
Output Leakage High Side
Output Leakage Low Side
Output Diode Voltage High Side
Output Diode Voltage Low Side
Serial Input
ILH
ILL
-
0
10
10
μA
μA
V
OUT1 to OUT8 = 0V
OUT1 to OUT8 = VVS
ILoad = 0.6A
-
0
VFH
VFL
0.2
0.2
0.8
0.8
1.4
1.4
V
ILoad = -0.6A
Input High Voltage
VIH
VIL
IIH1
IIH2
IIL1
IIL2
VCC x 0.6
-
-
-
VCC x 0.2
100
V
Input Low Voltage
-
-
-
-
-
V
Input High Current 1
Input High Current 2
Input Low Current 1
Input Low Current 2
Serial Output
50
0
μA
μA
μA
μA
(SDI, SCK, EN) = VCC = 5V
CSB = VCC = 5V
10
0
10
(SDI, SCK, EN) = 0V
CSB = 0V, VCC = 5V
50
100
Output High Voltage
Output Low Voltage
Protections
VOH
VOL
VCC - 0.6
-
-
-
-
V
V
ILoad = -1.0mA
ILoad = 1.0mA
0.6
VS Under Voltage Lock Out
(ON to OFF)
VS Under Voltage Lock Out
(OFF to ON)
VS Over Voltage Protection1
(OFF to ON)
VS Over Voltage Protection 1
(ON to OFF)
VS Over Voltage Protection 2
(OFF to ON)
VS Over Voltage Protection 2
(ON to OFF)
VUVDH
VUVDL
5.3
5.0
5.8
5.5
36
6.3
6.0
V
V
V
V
V
V
VOVPH1
VOVPL1
VOVPH2
VOVPL2
32.5
30
39.5
37
OVPSEL = 0
OVPSEL = 0
OVPSEL = 1
OVPSEL = 1
33.5
20
18
22
16.2
18
19.8
VCC Power On Reset(ON to OFF)
VCC Power On Reset(OFF to ON)
Over Current Protection
VPORH
VPORL
IOCP
2.6
2.4
1.05
10
2.8
2.6
1.55
25
3.0
2.8
2.05
50
V
V
A
Over Current Protection Delay Time
Under Load Detection(Note 1)
tDOC
IUD
μs
mA
μs
2
11
20
Under Load Detection Delay Time
tDUD
200
370
600
(Note 1) Measured when there is no load in other channels.
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BD16938AEFV-C
Electrical Characteristics – continued
(Unless otherwise specified, VVS = 6.3V to 32V, VCC = 3.0V to 5.5V, -40°C ≤ Tj ≤ +150°C)
Specification
Parameter
Symbol
Unit
Conditions
Min
Typ
Max
Protections
Thermal Warning(Note 1)
TTW
TTWHYS
TTSD
100
125
10
150
°C
°C
°C
°C
Thermal Warning Hysteresis(Note 1)
Thermal Shutdown(Note 1)
Thermal Shutdown Hysteresis(Note 1)
Driver Output Timing
-
150
-
-
200
-
175
25
TTSDHYS
High Side Turn On Time
Low Side Turn On Time
OUT Rise Time
tONH
tONL
tLHR
tHLF
-
-
-
-
-
38.0
38.0
8.0
μs
μs
μs
μs
VVS = 12V, No Load
VVS = 12V, No Load
VVS = 12V, No Load
VVS = 12V, No Load
-
1.0
1.0
OUT Fall Time
8.0
(Note 1) Design guaranteed. No shipping inspection.
CSB
tLHR
tONH
90%
OUT1 to OUT8
Low to High
10%
Figure 4. Driver Output Timing (Low to High)
CSB
tHLF
tONL
90%
OUT1 to OUT8
High to Low
10%
Figure 5. Driver Output Timing (High to Low)
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BD16938AEFV-C
Electrical Characteristics – continued
(Unless otherwise specified, VVS = 6.3V to 32V, VCC = 3.0V to 5.5V, -40°C ≤ Tj ≤ +150°C)
Specification
Parameter
Symbol
Unit
Conditions
Min
Typ
Max
Serial Peripheral Interface
SCK Frequency
fSCK
tSCK
-
-
-
-
-
-
4.1
MHz
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
ns
ns
ns
SCK Period
243
87.5
87.5
125
125
125
125
20
-
-
-
-
SCK High Time
tSCKH
SCK Low Time
tSCKL
SCK Setup Time
tSCKSET
tSCKHLD
tCSBLEAD
tCSBLAG
tCSBH
SCK Hold Time
CSB Lead Time
-
-
-
-
-
-
-
-
-
CSB Lag Time
-
-
CSB High Time
SDI Setup Time
tSDISET
tSDIHLD
tSDOV
50
-
SDI Hold Time
50
-
SDO Valid Time
-
100
125
500
No Load
(Note 1)
(Note 1)
SDO Enable After CSB Falling Edge
tSDOEN
-
SDO Disable After CSB Rising Edge
tSDODE
-
(Note 1) The timing is prescribed in 0% and 100% of VCC to GND amplitude.
tCSBLEAD
tCSBH
tCSBLAG
0.6VVCC
0.2VVCC
tSCK
CSB
tSCKSET
tSCKH
tSCKL
tSCKHLD
0.6VVCC
0.2VVCC
SCK
SDI
tSDIHLD
tSDISET
0.6VVCC
0.2VVCC
MSB
14
1
LSB
tSDODE
tSDOV
tSDOEN
0.6VVCC
0.2VVCC
SDO
(TER=0)
High Impedance
X
X
MSB
14
1
LSB
High Impedance
High Impedance
tSDODE
tSDOEN
0.6VVCC
0.2VVCC
SDO
(TER=1)
High Impedance
X: Unstable state
TER(Internal signal): “0” in normal operation / “1” in detecting erroneous SPI transmission
Figure 6. Serial Interface Timing
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BD16938AEFV-C
Typical Performance Curves
Ta = +125C
Ta = +25C
Vvs = 6.3V
Vvs = 12V
VCC = 5V
Ta = -40C
Vvs = 32V
VCC = 5V
TEST1 = TEST2 = 0V
TEST1 = TEST2 = 0V
Figure 7. Output ON Resistance vs Output Current
(Output ON Resistance High Side, VVS = 12V)
Figure 8. Output ON Resistance vs Output Current
(Output ON Resistance High Side, Ta=25C)
Ta = +125C
Ta = +25C
Vvs = 12V
Vvs = 32V
Vvs = 6.3V
Ta = -40C
VCC = 5V
TEST1 = TEST2 = 0V
VCC = 5V
TEST1 = TEST2 = 0V
Figure 9. Output ON Resistance vs Output Current
(Output ON Resistance Low Side, Vvs = 12V)
Figure 10. Output ON Resistance vs Output Current
(Output ON Resistance Low Side, Ta = 25C)
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BD16938AEFV-C
Description of Blocks
1. Serial Peripheral Interface: SPI
CSB
SCK
LSB
0
MSB
15
14
14
13
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
SDI
LSB
0
MSB
15
SDO
X
X
( TER=0 )
All "High"
SDO
( TER=1 )
X: Unstable state
TER(Internal signal): “0” in normal operation / “1” in detecting erroneous SPI transmission
Figure 11. SPI Communication Format
16bit serial interface is equipped to control on / off of driver and various protections as well as to read out the state of
protections. Input / Output register and the functions are described below.
(1) Input Data Register1- Input Pattern Bit15 = 1, Bit14 = 0
Bit
Number
Name
WE
Description
Write Enable
Write Address
Read Address
Bit Status
Initial Value
0 : Read
1 : Write & Read
15
-
0 : Address A
1 : Address B
14
13
12
11
10
9
WR_AD
RD_AD
SRR
-
0 : Address A
1 : Address B
-
Status Reset Register
(This bit will self-clear)
0 : Normal
1 : Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
Control High Side 4
(OUT4)
0 : High Side Off
1 : High Side On
HSC4
Control Low Side 4
(OUT4)
0 : Low Side Off
1 : Low Side On
LSC4
Control High Side 3
(OUT3)
0 : High Side Off
1 : High Side On
HSC3
Control Low Side 3
(OUT3)
0 : Low Side Off
1 : Low Side On
8
LSC3
Control High Side 2
(OUT2)
0 : High Side Off
1 : High Side On
7
HSC2
Control Low Side 2
(OUT2)
0 : Low Side Off
1 : Low Side On
6
LSC2
Control High Side 1
(OUT1)
0 : High Side Off
1 : High Side On
5
HSC1
Control Low Side 1
(OUT1)
0 : Low Side Off
1 : Low Side On
4
LSC1
Under Loads Register Mode
(OUT1 to OUT8)
0 : On
1 : Off
3
UNDERLOAD
TSDSTH
PSSTH
RESERVE
0 : Latch
1 : Through
2
TSDS Register Mode
OVPS / UVLOS Register
Mode
0 : Latch
1 : Through
1
0 : Normal
1 : Prohibit
0
Reserve
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BD16938AEFV-C
Description of Blocks – continued
(2) Input Data Register2- Input Pattern Bit15 = 1, Bit14 = 1
Bit
Number
Name
WE
Description
Write Enable
Write Address
Read Address
Bit Status
Initial Value
0 : Read
1 : Write & Read
15
-
0 : Address A
1 : Address B
14
13
12
11
10
9
WR_AD
RD_AD
SRR
-
0 : Address A
1 : Address B
-
Status Reset Register
(This bit will self-clear)
0 : Normal
1 : Reset
0
0
0
0
0
0
0
0
0
0
-
Control High Side 8
(OUT8)
0 : High Side Off
1 : High Side On
HSC8
Control Low Side 8
(OUT8)
0 : Low Side Off
1 : Low Side On
LSC8
Control High Side 7
(OUT7)
0 : High Side Off
1 : High Side On
HSC7
Control Low Side 7
(OUT7)
0 : Low Side Off
1 : Low Side On
8
LSC7
Control High Side 6
(OUT6)
0 : High Side Off
1 : High Side On
7
HSC6
Control Low Side 6
(OUT6)
0 : Low Side Off
1 : Low Side On
6
LSC6
Control High Side 5
(OUT5)
0 : High Side Off
1 : High Side On
5
HSC5
Control Low Side 5
(OUT5)
0 : Low Side Off
1 : Low Side On
4
LSC5
0 : VOVPH1, VOVPL1
1 : VOVPH2, VOVPL2
3
OVPSEL
RESERVE
RESERVE
RESERVE
OVP Threshold Select
Reserve
2
-
-
1
Reserve
-
0 : Normal
1 : Prohibit
0
Reserve
0
Input of High Side On and Low Side On is prohibited. The input of High Side On and Low Side On results in High
Side Off and Low Side Off state.
If WE(Bit15: Write Enable) is set to ‘1’, then Input Data Registers will be written and output will be Read Data as well
depending on the previous SPI command.
It can select the Write Registers by setting WR_AD(Bit14: Write Address) bit.
Read Data can be selected from the table of Read register by setting WR_AD(Bit14: Write Address) and
RD_AD(Bit13: Read Address). For Read Data information, please refer below from Output Data Register1 to Output
Data Register4.
If WE(Bit15: Write Enable) is set to ‘0’, then Input Data Registers will not be written (the transferred write data Bits 12
to 0 in this case will be ignored) and output will be only Read Data depending on the previous SPI command setting
of WR_AD(Bit14: Write Address) and RD_AD(Bit13: Read Address).
Daisy Chain input is not supported.
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Description of Blocks – continued
(3) Output Data Register1- Input Pattern Bit15 = 0, Bit14 = 0, Bit13 = 0
Bit
Number
Name
-
Description
Bit Status
-
Initial Value
15
-
0
0 : Normal
1 : Fault
14
13
12
11
10
9
TSDS
TWS
-
Thermal Shutdown Status
Thermal Warning Status
-
1(Note 1)
0 : Normal
1 : Fault
1(Note 1)
-
0
0
0
0
0
0
0
0
0
Status High Side 4
(OUT4)
0 : High Side Off
1 : High Side On
HSS4
LSS4
HSS3
LSS3
HSS2
LSS2
HSS1
LSS1
Status Low Side 4
(OUT4)
0 : Low Side Off
1 : Low Side On
Status High Side 3
(OUT3)
0 : High Side Off
1 : High Side On
Status Low Side 3
(OUT3)
0 : Low Side Off
1 : Low Side On
8
Status High Side 2
(OUT2)
0 : High Side Off
1 : High Side On
7
Status Low Side 2
(OUT2)
0 : Low Side Off
1 : Low Side On
6
Status High Side 1
(OUT1)
0 : High Side Off
1 : High Side On
5
Status Low Side 1
(OUT1)
0 : Low Side Off
1 : Low Side On
4
Over Current Protection
Status
0 : Normal
1 : Fault
3
OCPS
1(Note 1)
(OUT1 to OUT4)
Under Loads Status
(OUT1 to OUT4)
0 : Normal
1 : Fault
2
1
0
UNDERLOADS
OVPS
1(Note 1)
1(Note 1)
1(Note 1)
Over Voltage Protection
Status
0 : Normal
1 : Fault
0 : Normal
1 : Fault
UVLOS
UVLO(VS) Status
(Note 1) Default state is “1(Fault)”. Set SRR register to “1” at the start which will reset this values.
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Description of Blocks – continued
(4) Output Data Register2- Input Pattern Bit15 = 0, Bit14 = 0, Bit13 = 1
Bit
Number
Name
-
Description
-
Bit Status
-
Initial Value
0
15
0 : Normal
1 : Fault
14
13
12
11
10
9
TSDS
Thermal Shutdown Status
Thermal Warning Status
-
1(Note 1)
1(Note 1)
0
0 : Normal
1 : Fault
TWS
-
-
0 : Normal
1 : Fault
UNDERLOAD4
UNDERLOAD3
UNDERLOAD2
UNDERLOAD1
OCPH4
Under Load Status OUT4
Under Load Status OUT3
Under Load Status OUT2
Under Load Status OUT1
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
0 : Normal
1 : Fault
0 : Normal
1 : Fault
0 : Normal
1 : Fault
8
Over Current Protection
High Side Status OUT4
0 : Normal
1 : Fault
7
Over Current Protection
Low Side Status OUT4
0 : Normal
1 : Fault
6
OCPL4
Over Current Protection
High Side Status OUT3
0 : Normal
1 : Fault
5
OCPH3
Over Current Protection
Low Side Status OUT3
0 : Normal
1 : Fault
4
OCPL3
Over Current Protection
High Side Status OUT2
0 : Normal
1 : Fault
3
OCPH2
Over Current Protection
Low Side Status OUT2
0 : Normal
1 : Fault
2
OCPL2
Over Current Protection
High Side Status OUT1
0 : Normal
1 : Fault
1
OCPH1
Over Current Protection
Low Side Status OUT1
0 : Normal
1 : Fault
0
OCPL1
(Note 1) Default state is “1(Fault)”. Set SRR register to “1” at the start which will reset this values.
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Description of Blocks – continued
(5) Output Data Register3- Input Pattern Bit15 = 0, Bit14 = 1, Bit13 = 0
Bit
Number
Name
-
Description
Bit Status
-
Initial Value
15
-
0
0 : Normal
1 : Fault
14
13
12
11
10
9
TSDS
TWS
-
Thermal Shutdown Status
Thermal Warning Status
-
1(Note 1)
0 : Normal
1 : Fault
1(Note 1)
-
0
0
0
0
0
0
0
0
0
Status High Side 8
(OUT8)
0 : High Side Off
1 : High Side On
HSS8
LSS8
HSS7
LSS7
HSS6
LSS6
HSS5
LSS5
Status Low Side 8
(OUT8)
0 : Low Side Off
1 : Low Side On
Status High Side 7
(OUT7)
0 : High Side Off
1 : High Side On
Status Low Side 7
(OUT7)
0 : Low Side Off
1 : Low Side On
8
Status High Side 6
(OUT6)
0 : High Side Off
1 : High Side On
7
Status Low Side 6
(OUT6)
0 : Low Side Off
1 : Low Side On
6
Status High Side 5
(OUT5)
0 : High Side Off
1 : High Side On
5
Status Low Side 5
(OUT5)
0 : Low Side Off
1 : Low Side On
4
Over Current Protection
Status
0 : Normal
1 : Fault
3
OCPS
1(Note 1)
(OUT5 to OUT8)
Under Loads Status
(OUT5 to OUT8)
0 : Normal
1 : Fault
2
1
0
UNDERLOADS
OVPS
1(Note 1)
1(Note 1)
1(Note 1)
Over Voltage Protection
Status
0 : Normal
1 : Fault
0 : Normal
1 : Fault
UVLOS
UVLO(VS) Status
(Note 1) Default state is “1(Fault)”. Set SRR register to “1” at the start which will reset this values.
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Description of Blocks – continued
(6) Output Data Register4- Input Pattern Bit15 = 0, Bit14 = 1, Bit13 = 1
Bit
Number
Name
-
Description
-
Bit Status
-
Initial Value
0
15
0 : Normal
1 : Fault
14
13
12
11
10
9
TSDS
Thermal Shutdown Status
Thermal Warning Status
-
1(Note 1)
1(Note 1)
0
0 : Normal
1 : Fault
TWS
-
-
0 : Normal
1 : Fault
UNDERLOAD8
UNDERLOAD7
UNDERLOAD6
UNDERLOAD5
OCPH8
Under Load Status OUT8
Under Load Status OUT7
Under Load Status OUT6
Under Load Status OUT5
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
1(Note 1)
0 : Normal
1 : Fault
0 : Normal
1 : Fault
0 : Normal
1 : Fault
8
Over Current Protection
High Side Status OUT8
0 : Normal
1 : Fault
7
Over Current Protection
Low Side Status OUT8
0 : Normal
1 : Fault
6
OCPL8
Over Current Protection
High Side Status OUT7
0 : Normal
1 : Fault
5
OCPH7
Over Current Protection
Low Side Status OUT7
0 : Normal
1 : Fault
4
OCPL7
Over Current Protection
High Side Status OUT6
0 : Normal
1 : Fault
3
OCPH6
Over Current Protection
Low Side Status OUT6
0 : Normal
1 : Fault
2
OCPL6
Over Current Protection
High Side Status OUT5
0 : Normal
1 : Fault
1
OCPH5
Over Current Protection
Low Side Status OUT5
0 : Normal
1 : Fault
0
OCPL5
(Note 1) Default state is “1(Fault)”. Set SRR register to “1” at the start which will reset this values.
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Description of Blocks – continued
(7) Settings of Error Output Registers
Under Voltage
Over Voltage
Protection
OVPS
Over Current
Protection
OCPS
Thermal Shutdown
TSDS
< PSSTH , TSDSTH >
Lock Out
UVLOS
< 0 , 0 >
< 0 , 1 >
< 1 , 0 >
< 1 , 1 >
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Self Recovery
Latch
Self Recovery
Self Recovery
Self Recovery
Self Recovery
Self Recovery
PSSTH, TSDSTH has to be set initially, and it shouldn’t be changed in the middle of operation.
Either Latch or Self Recovery are selectable on UVLOS, OVPS and TSDS error output registers. Only Latch is
available on OCPS error output register.
(The registers control only the operation mode of error output registers. It cannot change the operation of OUT1 to
OUT8 terminals.)
Refer to the explanations of Protection Functions as far as OUT1 to OUT8 operations are concerned.
(8) Erroneous SPI Transmission (Transmission Error: TER)
When CSB signal becomes Low to High it will be assumed that SPI has completed the transfer, and the internal
registers will be updated. When SCK inputs high pulse of 16, 24, 32, … (8+8xN values) except while CSB is low,
erroneous SPI transmission is detected. If the error is detected, OUT1 to OUT8 outputs High Impedance and each
error output register (OCPS, UNDERLOADS, TSDS, TWS, OVPS, and UVLOS) maintains the prior status accordingly.
But SDO signal become high in the next transferring of SPI by TER.
At the same time, if the CSB High period (tCSBH) goes below the specified 20μs, an erroneous SPI transmission can
be detected. The transmission error status is refreshed every time CSB rises.
TER(Internal signal) : “0” in normal operation / “1” in detecting erroneous SPI transmission
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Description of Blocks – continued
2. Over Voltage Protection (OVP)
All outputs become High impedance if VS terminal voltage goes up to VOVPH [when OVPSEL = 0, VOVPH1 = 36V(Typ)
and when OVPSEL = 1, VOVPH2 = 20V(Typ)] or above. And OVPS register is set ‘1’. Then, the outputs return to the
normal operation when VS terminal voltage goes down to VOVPL [when OVPSEL = 0, VOVPL1 = 33.5V(Typ) and when
OVPSEL = 1, VOVPL2 = 18V(Typ)] or below.
It can select either Latch mode or Self-Recovery mode for OVPS output register by PSSTH input register.
In case PSSTH input register is set ‘0’, OVPS output register become Latch mode.
In case PSSTH input register is set ‘1’, OVPS output register become Self-Recovery mode.
In case of Self-Recovery mode, OVPS output register return to ‘0’ automatically, when VS terminal voltage goes down
to VOVPL or below. But, in case Latch mode, OPVS output register keeps ‘1’, if VS terminal voltage goes down to
VOVPL or below. It can reset for the latch of OVPS by SRR register.
OVP doesn’t operate when EN terminal is set to Low level. Please don’t to exceed the absolute maximum power
supply voltage to avoid the IC being destroyed.
OVPSEL=0:36V(Typ)
VOVPH
OVPSEL=0:33.5V(Typ)
OVPSEL=1:18V(Typ)
OVPSEL=1:20V(Typ)
VOVPL
VS
Operating
OUT1 to OUT8
High Impedance
High
PSSTH=0
PSS Error Bit(OVPS)
Low
High
Low
PSSTH=1
PSS Error Bit(OVPS)
Normal
Protection
Normal
Figure 12. OVP Timing Chart
3. Under Voltage Lock Out (UVLO)
All outputs become High impedance if VS terminal voltage goes down to 5.5V(Typ) or below. And UVLOS output
register is set ‘1’. Then, when VS terminal voltage goes up to 5.8V(Typ) or above, the outputs return to the normal
operation mode.
It can select either Latch mode or Self-Recovery mode for UVLOS output register by PSSTH input register.
In case PSSTH input register is set ‘0’, UVLOS output register become Latch mode.
In case PSSTH input register is set ‘1’, UVLOS output register become Self-Recovery mode.
In case of Self-Recovery mode, UVLOS output register return to ‘0’ automatically, when VS terminal voltage goes up
to 5.8V(Typ) or above. It can reset for the latch of UVLOS by SRR register.
However, all resisters are reset and the outputs remains High impedance even if VS voltage goes back to normal
voltage when VS power supply goes much lower than UVLO voltage. Because a digital circuit(SPI & Control Logic)
works with an internal power supply which is made by VS power supply. Please set resisters again.
VS
5.8V(Typ)
5.5V(Typ)
Operating
OUT1 to OUT8
High Impedance
High
PSSTH=0
PSS Error Bit(UVLOS)
Low
High
PSSTH=1
PSS Error Bit(UVLOS)
Low
Normal
Protection
Normal
Figure 13. UVLO Timing Chart
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BD16938AEFV-C
Description of Blocks – continued
4. Over Current Protection (OCP)
If the current flows 1.55A(Typ) or above at the output terminal and pass 25μs(Typ), over current is protected. And
OCPS register is set “1”. Only the Over Current Protected output terminal is latched at High impedance. In order to
release the latch, it has to be reset by SRR register or EN terminal. This 25μs delay time is implemented to avoid the
malfunction caused by noise.
OCP function protects the IC from destruction caused by output short. However, the continuous overcurrent condition
causes the IC heating up or degraded, thus please take the appropriate measure such as making this IC into
stand-by mode by application program when over current condition continues. Register OCPH1 to OCPH8, OCPL1 to
OCPL8 will be set to specify OCP condition for the respective channels. (Please refer the output data register tables.)
Delay Time 25μs(Typ)
1.55A(Typ)
Operating
OUT1 to OUT8
High Impedance
High
OCP Error Bit(OCPS)
Low
Normal
Protection(Latch)
Figure 14. OCP Timing Chart
5. Thermal Shutdown (TSD) / Thermal Warning (TW)
If the junction temperature goes up to 175°C(Typ) or above, all outputs become High impedance. And TSDS output
register is set ‘1’. Then, when the junction temperature goes down to 150°C(Typ) or below, the outputs return to the
normal operation.
It can select either Latch mode or Self-Recovery mode for TSDS output register by TSDSTH input register.
In case TSDSTH input register is set ‘0’, TSDS output register become Latch mode.
In case TSDSTH input register is set ‘1’, TSDS output register become Self-Recovery mode.
In case of Self-Recovery mode, TSDS output register return to ‘0’ automatically, when the junction temperature goes
down to 150°C(Typ) or below. It can reset for the latch of TSDS by SRR register.
When the junction temperature goes up to 125°C(Typ) or above, TWS output register is set to ‘1’.
It can also select either Latch mode or Self-Recovery mode for TWS output register by TSDSTH input register.
In case TSDSTH input register is set ‘0’, TWS output register become Latch mode.
In case TSDSTH input register is set ‘1’, TWS output register become Self-Recovery mode.
In case of Self-Recovery mode, TWS output register return to ‘0’ automatically, when the junction temperature goes
down to 115°C(Typ) or below. It can reset for the latch of TWS by SRR register.
TW don’t affect the output condition.
175°C(Typ)
150°C(Typ)
125°C(Typ)
115°C(Typ)
Temperature
Operating
OUT1 to OUT8
High Impedance
High
TSDSTH=0
TSD Error Bit(TSDS)
Low
High
TSDSTH=1
TSD Error Bit(TSDS)
Low
Normal
Protection
Normal
High
TSDSTH=0
TW Error Bit(TWS)
Low
High
TSDSTH=1
TW Error Bit(TWS)
Low
Normal
Warning
Normal
Figure 15. TSD / TW Timing Chart
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Description of Blocks – continued
6. Under Load Detection (ULD)
When the current flows 11mA(Typ) or below at the output terminal and pass 370μs(Typ), Under Load is detected. And
UNDERLOADS register is set ‘1’. The output is not turned off if Under Load is detected, but the fault is latched by the
UNDERLOADS register. In order to release the latch, it has to be reset by SRR register. This 370μs delay time is
implemented to avoid the malfunction caused by noise. Register UNDERLOAD1 to UNDERLOAD8 can be set to
specify ULD condition for the respective channels. (Please refer the output data register tables.)
11mA(Typ)
Delay time 370μs(Typ)
Operating
OUT1 to OUT8
High
ULD Error Bit
(UNDERLOADS register)
Low
Normal
Protection
Figure 16. Under Load Timing Chart 1
(Note)
When use the motor that the detection time need more than 370μs(Typ) such as Figure 17, please set UNDERLOAD
register to ‘1’ at once, and then reset UNDERLOAD register to ‘0’ after the load current becomes stable.
Load connection
No Load
Delay time > 370μs(Typ)
OUT1 to OUT8
Current
11mA(Typ)
0mA
0mA
Operating
Operating
OUT1 to OUT8
High
High
Impedance
Impedance
High
High
(Note 1)
UNDERLOAD register
Status Read
Low
Low
600μs
(Note 2)
600μs
(Note 2)
ULD Error Bit
(UNDERLOADS register)
Low
High
Low
Low
370μs (Typ)
Figure 17. Under Load Timing Chart 2
(Note 1) This time should be determined based on response of the load connected.
(Note 2) OPEN detection time requires minimum 600μs, so please use it by an interval of at least 600μs.
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BD16938AEFV-C
Recommended Application Example
R2
Motor 4
M
Motor 3
M
4.7μ F
C1
BD16938AEFV-C
D1
D2
1µF
C2
M
M
Motor 1
Motor 2
C3
C3
R1
C3
C3
R1
R1
R1
VCC
R2
Micro
Voltage
controller
Regulator
VS
The external circuit constants shown in the diagram above represent a recommended value, respectively.
(NC terminal: OPEN)
Figure 18. Recommended Application Example
Cautions on Designing of Application Circuits
1. Applicable Motors
Be noted that The BD16938AEFV-C motor driver can only drive DC motors and cannot drive stepping motors.
2. VS and VCC
Be sure to mount a power supply capacitor in the vicinity of the IC pins between the VS and PGND and between the
VCC and GND. Determine the capacitance of the capacitor after fully ensuring that it presents no problems in
characteristics. (The recommended value of between VS and GND is 4.7µF or more. The recommended value of
between VCC and GND is 1.0µF or more.)
Cause a short circuit between VS (set them to the same potential) before using the IC.
3. Counter-Electromotive Force
The counter-electromotive force may vary with operating conditions and environment, and individual motor
characteristics. Fully ensure that the counter-electromotive force presents no problems in the operation or the IC.
4. Fluctuations in Output Pin Voltage
If any output pin makes a significant fluctuation in the voltage to fall below GND potential due to heat generation
conditions, power supply, motor to be used, and other conditions, this may result in malfunctions or other failures. In
such cases, take appropriate measures, including the addition of a Schottky diode between the output pin and
ground.
5. Rush Current
This IC has no built-in circuit that limits rush currents caused by applying current to the power supply or switching
operation mode. To avoid the rush currents, take physical measures such as adding a current-limiting resistor
between VS pins and the power supply.
6. Thermal Pad
Since a thermal pad is connected to the sub side of this IC, connect it to the ground potential. Do not use the thermal
pad as ground interconnect.
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I/O Equivalence Circuits
Pin No.
Pin Name
I/O Equivalence Circuit
VCC
7
10kΩ
SDI/EN/SCK
6
9
SDI
EN
6
9
23
23
SCK
100kΩ
GND
21
GND
21
VCC
7
15Ω
SDO
8
8
SDO
GND
GND
21
21
VCC
7
100kΩ
10kΩ
22
CSB
CSB
22
GND
21
GND
21
VS1,VS2
4
25
11 18
2, 3
OUT1
to
OUT8
12, 13
16, 17
26, 27
OUT1 to OUT8
2
3
12 13
16 17 26 27
PGND1,PGND2
1
28
14 15
VCC
7
200kΩ
10
19
TEST1
TEST2
TEST1/TEST2
10 19
500kΩ
GND
GND
21
21
The resistance values shown in the above diagram are typical values.
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Operational Notes
1.
2.
Reverse Connection of Power Supply
Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when
connecting the power supply, such as mounting an external diode between the power supply and the IC’s power
supply pins.
Power Supply Lines
Design the PCB layout pattern to provide low impedance supply lines. Separate the ground and supply lines of the
digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the
analog block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of
temperature and aging on the capacitance value when using electrolytic capacitors.
3.
4.
Ground Voltage
Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition.
However, pins that drive inductive loads (e.g. motor driver outputs, DC-DC converter outputs) may inevitably go
below ground due to back EMF or electromotive force. In such cases, the user should make sure that such voltages
going below ground will not cause the IC and the system to malfunction by examining carefully all relevant factors
and conditions such as motor characteristics, supply voltage, operating frequency and PCB wiring to name a few.
Ground Wiring Pattern
When using both small-signal and large-current ground traces, the two ground traces should be routed separately
but connected to a single ground at the reference point of the application board to avoid fluctuations in the
small-signal ground caused by large currents. Also ensure that the ground traces of external components do not
cause variations on the ground voltage. The ground lines must be as short and thick as possible to reduce line
impedance.
5.
6.
Recommended Operating Conditions
The function and operation of the IC are guaranteed within the range specified by the recommended operating
conditions. The characteristic values are guaranteed only under the conditions of each item specified by the
electrical characteristics.
Inrush Current
When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may
flow instantaneously due to the internal powering sequence and delays, especially if the IC has more than one
power supply. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground
wiring, and routing of connections.
7.
Testing on Application Boards
When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may
subject the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply
should always be turned off completely before connecting or removing it from the test setup during the inspection
process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions
during transport and storage.
8.
9.
Inter-pin Short and Mounting Errors
Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result
in damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output
pin. Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid
environment) and unintentional solder bridge deposited in between pins during assembly to name a few.
Unused Input Pins
Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance
and extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small
charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and
cause unexpected operation of the IC. So unless otherwise specified, unused input pins should be connected to the
power supply or ground line.
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BD16938AEFV-C
Operational Notes – continued
10. Regarding the Input Pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them
isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a
parasitic diode or transistor. For example (refer to figure below):
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes
to operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate)
should be avoided.
Resistor
Transistor (NPN)
Pin A
Pin B
Pin B
B
E
C
Pin A
B
C
E
P
P+
P+
N
P+
P
P+
N
N
N
N
N
N
N
Parasitic
Elements
Parasitic
Elements
P Substrate
GND GND
P Substrate
GND
GND
Parasitic
Elements
Parasitic
Elements
N Region
close-by
Figure 19. Example of monolithic IC structure
11. Ceramic Capacitor
When using a ceramic capacitor, determine a capacitance value considering the change of capacitance with
temperature and the decrease in nominal capacitance due to DC bias and others.
12. Thermal Shutdown Circuit (TSD)
This IC has a built-in thermal shutdown circuit that prevents heat damage to the IC. Normal operation should always
be within the IC’s maximum junction temperature rating. If however the rating is exceeded for a continued period,
the junction temperature (Tj) will rise which will activate the TSD circuit that will turn OFF power output pins. When
the Tj falls below the TSD threshold, the circuits are automatically restored to normal operation.
Note that the TSD circuit operates in a situation that exceeds the absolute maximum ratings and therefore, under
no circumstances, should the TSD circuit be used in a set design or for any purpose other than protecting the IC
from heat damage.
13. Over Current Protection Circuit (OCP)
This IC incorporates an integrated overcurrent protection circuit that is activated when the load is shorted. This
protection circuit is effective in preventing damage due to sudden and unexpected incidents. However, the IC
should not be used in applications characterized by continuous operation or transitioning of the protection circuit.
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TSZ22111 • 15 • 001
BD16938AEFV-C
Ordering Information
B D 1 6 9 3 8 A E F V
-
CE 2
Part Number
Package
EFV: HTSSOP-B28
Product Rank
C: for Automotive
Packing and Forming Specification
E2: Embossed Tape and Reel
Marking Diagram
HTSSOP-B28 (TOP VIEW)
Part Number Marking
LOT Number
BD16938AEF
Pin 1 Mark
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TSZ22111 • 15 • 001
BD16938EFV-C
Physical Dimension and Packing Information
Package Name
HTSSOP-B28
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31.Aug.2019 Rev.001
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BD16938EFV-C
Revision History
Date
Revision
001
Changes
31.Aug.2019
New Release
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Notice
Precaution on using ROHM Products
(Note 1)
1. If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment
,
aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life,
bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales
representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any
ROHM’s Products for Specific Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅣ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅢ
2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3. Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below.
Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the
use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our
Products under any special or extraordinary environments or conditions (as exemplified below), your independent
verification and confirmation of product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (Exclude cases where no-clean type fluxes is used.
However, recommend sufficiently about the residue.); or Washing our Products by using water or water-soluble
cleaning agents for cleaning residue after soldering
[h] Use of the Products in places subject to dew condensation
4. The Products are not subject to radiation-proof design.
5. Please verify and confirm characteristics of the final or mounted products in using the Products.
6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse, is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in
the range that does not exceed the maximum junction temperature.
8. Confirm that operation temperature is within the specified range described in the product specification.
9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-PAA-E
Rev.004
© 2015 ROHM Co., Ltd. All rights reserved.
Precautions Regarding Application Examples and External Circuits
1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2. You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
A two-dimensional barcode printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1. All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data.
2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4. The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice-PAA-E
Rev.004
© 2015 ROHM Co., Ltd. All rights reserved.
Daattaasshheeeett
General Precaution
1. Before you use our Products, you are requested to carefully read this document and fully understand its contents.
ROHM shall not be in any way responsible or liable for failure, malfunction or accident arising from the use of any
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this document is current as of the issuing date and subject to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the latest information with a ROHM sales
representative.
3. The information contained in this document is provided on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate and/or error-free. ROHM shall not be in any way responsible or
liable for any damages, expenses or losses incurred by you or third parties resulting from inaccuracy or errors of or
concerning such information.
Notice – WE
Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
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