R5105N501A-TR-JE [RICOH]
Power Supply Management Circuit,;
| 型号： | R5105N501A-TR-JE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Management Circuit, |
| 文件： | 总18页 (文件大小：485K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R5105N SERIES
AEC-Q100 Grade 2 Compliant
Microprocessor Supervisory Circuit for Automotive Applications
NO.EC-159-130719
OUTLINE
The R5105N Series are CMOS-based microprocessor supervisory circuit and have high accuracy and ultra
low supply current voltage detector with built-in delay circuit and watchdog timer. When the supply voltage is
down across the threshold, or the watchdog timer does not detect the system clock from the microprocessor, the
reset output is generated.
The voltage detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the
accuracy is ±1.0%. The released delay time (Power-on Reset Delay) circuit is built-in, and output delay time is
adjustable with an external capacitor, and the accuracy is ±16%*. When the supply voltage becomes higher than
the released voltage, the reset state will be maintained during the delay time. The output type of the reset is
selectable, Nch open-drain, or CMOS.
The time out period of the watchdog timer can be also set with an external capacitor, and the accuracy is
±33%*.
There are another 4 products by the difference of packages and the function of voltage detector and watchdog
timer. The package of R5105N is SOT-23-6.
FEATURES
Supply Current (ISS) ..............................................................Typ. 11A
Operating Voltage Range (VDD) ............................................0.9V to 6.0V
< Voltage Detector Part >
Detector Threshold Range....................................................1.5V to 5.5V (0.1V steps)
Detector Threshold Accuracy................................................1.0%
Detector Threshold Temperature Coefficient........................Typ. ppm/C （40C≤Ta≤105C）
Power-on Reset Delay Time accuracy .................................16%* (-40C ≤ Ta ≤ 105C)
Power-on reset delay time of the voltage detector...............Typ. 370ms with an external capacitor : 0.1F
< Watchdog Timer Part >
Built-in a watchdog timer's time out period accuracy ...........±33%* (-40C ≤ Ta ≤ 105C)
Timeout period for watchdog timer .......................................Typ. 310ms with an external capacitor : 0.1F
Reset timer for watchdog timer.............................................Typ. 34ms with an external capacitor : 0.1F
Package................................................................................SOT-23-6
*) Accuracy to center value of (Min.+Max.)/2
APPLICATIONS
Supervisory circuit for car accessories including car audio systems, car navigation systems, and ETC
systems.
Version 1.0
1
R5105N
BLOCK DIAGRAMS
Nch Open Drain Output (R5105Nxx1A)
CMOS Output (R5105Nxx1C)
3
3
6
V
DD
V
DD
C
D
C
D
6
Vref2
Vref2
Vref1
Vref1
5
1
5
1
GND
SCK
GND
SCK
2
4
2
4
C
TW
C
TW
WATCHDOG
TIMER
CLOCK
DETECTOR
WATCHDOG
TIMER
CLOCK
DETECTOR
RESETB
RESETB
SELECTION GUIDE
The detector threshold, the output type and the taping type for the ICs can be selected at the users’ request.
The selection can be made with designating the part number as shown below;
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
SOT-23-6
3,000 pcs
Yes
Yes
R5105Nxx1-TR-#E
xx: The detector threshold (-VDET) can be designated in the range from 1.5V(15) to 5.5V(55) in 0.1V steps.
: Designation of Output Type
(A) Nch Open Drain
(C) CMOS
# : Specify the automotive class code.
Operating
Temperature Range
Guaranteed Specs
Temperature Range
Screening
Low and High
Temperatures
J
−40°C to 105°C
25°C
Version 1.0
2
R5105N
SERIES SELECTION
R5105N
R5106N
R5107G
R5108G
R5109G
Package
With INH pin (Inhibit)
2 clock input
SOT-23-6
SSOP-8G
No
Yes
No
Yes
No
With MR pin (Manual Reset)
With SENSE pin
No
Yes
No
No
Yes
CD pin and
CTW pin are
combined uses.
Operating
Voltage Range
1.5V to 6.0V
Supply Current
Remarks
11.5A
PIN CONFIGURATION
SOT-23-6
6
5
4
(mark side)
1
2
3
PIN DESCRIPTIONS
SOT-23-6
Pin No.
Symbol
Description
1
SCK
Clock Input Pin from Microprocessor
External Capacitor Pin for setting Reset and Watchdog Timer
Timeout Period
2
3
CTW
VDD
Power supply Pin
Output Pin for Reset signal of Watchdog timer and Voltage Detector.
(Output "L" at detecting Detector Threshold and Watchdog Timer
Reset.)
4
RESETB
5
6
GND
Ground Pin
CD
External Capacitor Pin for Setting delay time of Voltage Detector
Version 1.0
3
R5105N
ABSOLUTE MAXIMUM RATINGS
Ta25C
Symbol
Item
Rating
-0.3 to 7.0
-0.3 to VDD + 0.3
-0.3 to VDD + 0.3
-0.3 to 7.0
-0.3 to 7.0
20
Unit
V
VDD
Supply Voltage
Output Voltage
VCD
Voltage of CD Pin
V
VCTW
VRESETB
VSCK
IRESETB
PD
Voltage of CTW Pin
V
Voltage of RESETB Pin
Voltage of SCK Pin
Current of RESETB Pin
V
Input Voltage
V
Output Current
mA
mW
C
C
Power Dissipation (SOT-23-6)*
Junction Temperature
525
Tj
-40 to 150
-55 to 150
Tstg
Storage Temperature Range
* ) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings are not assured.
RECOMMENDED OPERATING RATINGS
Symbol
VDD
Item
Operating Ratings
Unit
Operating Voltage
Operating Temperature Range
0.9 to 6.0
V
Ta
−40 to 105
C
RECOMMENDED OPERATING RATINGS
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating ratings. The semiconductor devices cannot operate normally over the recommended
operating ratings, even if when they are used over such ratings by momentary electronic noise or surge. And the
semiconductor devices may receive serious damage when they continue to operate over the recommended operating
ratings.
Version 1.0
4
R5105N
ELECTRICAL CHARACTERISTICS
VDD6.0V, CTW0.1F, CD0.1F, In case of Nch Open Drain Output type, the output pin is pulled up with a
resistance of 100kΩ (R5105Nxx1A), unless otherwise noted.
The specification in
is checked and guaranteed by design engineering at −40C ≤ Ta ≤ 105C.
R5105Nxx1A/C
Ta25C
Symbol
Item
Item
Conditions
Min.
Typ.
Max.
Unit
VDD-VDET+0.5V,
Clock pulse input
ISS
Supply Current
11
15
A
VD Part
Symbol
Conditions
Min.
Typ.
Max.
Unit
Ta25C
0.990
1.010
-VDET Detector Threshold
V
40C ≤ Ta ≤ 105C
0.972
1.015
-VDET
0.03
-VDET
0.05
-VDET
0.07
V
Detector Threshold Hysteresis
Output Delay Time
V
HYS
CD=0.1F *1
tPLH
340
370
467
ms
mA
VDD1.2V
Nch
0.38
0.8
VDS0.1V
Output Current
(RESETB Output pin)
IRESETB
VDD6.0V
Pch *2
0.65
0.9
mA
VDS0.5V
WDT Part
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
CTW0.1F *1
tWD
tWR
Watchdog Timeout period
Reset Hold Time of WDT
230
310
450
ms
CTW0.1F *1
29
VDD0.8
0
34
48
6.0
ms
V
VSCKH SCK Input "H"
VSCKL
tSCKW
SCK Input "L"
V
VDD0.2
VSCKLVDD0.2
VSCKHVDD0.8
SCK Input Pulse Width
500
ns
As all of unit, all items in the above table are tested and specified under load conditions such that Tj≈Ta=25°C.
*1) The specification does not contain the temperature characteristics of the external capacitor.
*2) In case of CMOS type (R5105Nxx1C)
Version 1.0
5
R5105N
TIMING CHART
+VDET
VDD
-VDET
t
PHL
t
PHL
VCD
+VTCD
-VTCD
tWD
tWDI
V
V
ref2H
VCTW
ref2L
t
PLH
t
PLH
VSCK
tWR
VRESETB
(1)
(2)
(3)
(4) (1)
VTCD : Threshold voltage of CD pin when a power-on reset pulse inverting.
Vref2H : CTW pin voltage at the end of WDT timeout period.
Vref2L : CTW pin voltage at the begin of WDT timeout period.
OPERATION
(1) When the power supply, VDD pin voltage becomes more than the released voltage (+VDET), after the released
delay time (or the power on reset time tPLH), the output of RESETB becomes "H" level.
(2) When the SCK pulse is input, the watchdog timer (WDT) is cleared, and CTW pin mode changes from the
discharge mode to the charge mode. When the CTW pin voltage becomes higher than VrefH, the mode will
change into the discharge mode, and next watchdog time count starts.
(3) Unless the SCK pulse is input, WDT will not be cleared, and during the charging period of CTW pin,
RESETB="L".
(4) When the VDD pin becomes lower than the detector threshold voltage(-VDET), RESETB outputs "L".
Version 1.0
6
R5105N
Watchdog Timeout period/Reset hold time
The watchdog timeout period and reset hold time can be set with an external capacitor to CTW pin.
The next equations describe the relation between the watchdog timeout period and the external capacitor
value, or the reset hold time and the external capacitor value.
tWD (s) = 3.1106C (F)
tWR (s) = tWD/9
The watchdog timer (WDT) timeout period is determined with the discharge time of the external capacitor.
During the watchdog timeout period, if the clock pulse from the system is detected, WDT is cleared and the
capacitor is charged. When the charge of the capacitor completes, another watchdog timeout period starts again.
During the watchdog timeout period, if the clock pulse from the system is not detected, during the next reset hold
time RESETB pin outputs "L".
During the reset time, (while charging the external capacitor) and after starting the watchdog timeout period,
(just after from the discharge of the external capacitor) even if the clock pulse is input during the time period "tWDI",
the clock pulse is ignored.
tWDI (s) = tWD/10
Released Delay Time (Power-on Reset delay time)
The released delay time can be set with an external capacitor connected to the CD pin. The next equation
describes the relation between the capacitance value and the released delay time (tPLH).
tPLH (s) =3.7106 C (F)
When the VDD voltage becomes equal or less than (-VDET), discharge of the capacitor connected to the CD pin
starts. Therefore, if the discharge is not enough and VDD voltage returns to (+VDET) or more, thereafter the delay
time will be shorter than tPLH which is expected.
Power on Reset Operation against the input glitch (tPLH1<tPLH)
+VDET
-VDET
VDD
0V
Complete
Discharge
+VTCD
-VTCD
VCD
0V
Incomplete
Discharge
VRESETB
0V
t
PLH1
t
PLH
Minimum Operating Voltage
We specified the minimum operating voltage as the minimum input voltage in which the condition of RESETB
pin being 0.1V or lower than 0.1V. (Herein, pull-up resistance is set as 100kin the case of the Nch open-drain
output type.)
Version 1.0
7
R5105N
RESETB Output
RESETB pin's output type is selectable either the Nch open-drain output or CMOS output. If the Nch
open-drain type output is selected, the RESETB pin is pulled up with an external resistor to an appropriate
voltage source.
Clock Pulse Input
Built-in watchdog timer is cleared with the SCK clock pulse within the watchdog timeout period.
Version 1.0
8
R5105N
TYPICAL APPLICATIONS
Power Supply
Microprocessor
Power Supply
Microprocessor
V
DD
V
DD
R
3
6
V
DD
RESETB
R5105Nxx1A
4
1
3
6
V
DD
RESETB
R5105Nxx1C
4
1
RESET
I/O
RESET
I/O
Series
Series
SCK
SCK
C
D
C
D
CTW
2
CTW
2
GND
5
GND
5
CD
CD
C
TW
C
TW
TEST CIRCUITS
R (R5105Nxx1A)
A
3
6
V
DD
RESETB
R5105Nxx1A/C
4
1
Clock Input
Series
SCK
C
D
CTW
2
GND
5
CD
CTW
Supply Current Test Circuit
Version 1.0
9
R5105N
PACKAGE INFORMATION
POWER DISSIPATION (SOT-23-6)
Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the
Measurement Conditions below.
Measurement Conditions
Standard Land Pattern
Environment
Mounting on Board (Wind Velocity = 0 m/s)
Glass Cloth Epoxy Plastic (Double-sided)
40 mm x 40 mm x 1.6 mm
Board Material
Board Dimensions
Copper Ratio
Top-side: Approx. 50%, Back-side: Approx. 50%
0.5 mm x 44 pcs
Through-holes
Measurement Result
(Ta = 25°C, Tjmax = 150°C)
Free Air
Standard Land Pattern
525 mW
Power Dissipation
Thermal Resistance
310 mW
θja = (150 − 25°C) / 0.525 W = 238°C / W
400°C / W
40
600
525
500
On Board
400
Standard Land Pattern
310
300
Free Air
200
100
0
105
0
25
50
75
100
125
150
IC Mount Area (Unit: mm)
Ambient Temparature（℃）
Power Dissipation vs. Ambient Temperature
Measurement Board Pattern
Version 1.0
10
R5105N
Package Dimensions (SOT-23-6)
2.9±0.2
+0.2
-0.1
1.1
1.9±0.2
0.8±0.1
(0.95) (0.95)
4
3
6
1
5
0 to 0.1
2
+0.1
0.15 0.05
+0.1
0.4 0.2
-
-
Unit : mm
Package Dimensions
MARK SPECIFICATION (SOT-23-6)
: Product Code ･･･ Refer to “R5105N Mark Specification Table”.
: Lot Number
･･･ Alphanumeric Serial Number
6
5
4
3
1
2
Markings
Version 1.0
11
R5105N
R5105N Mark Specification Table (SOT-23-6)
R5105Nxx1A
R5105Nxx1C
Product Name
1 A
1 B
1 C
1 D
1 E
1 F
1 G
1 H
1 J
Product Name
R5105N151A
R5105N161A
R5105N171A
R5105N181A
R5105N191A
R5105N201A
R5105N211A
R5105N221A
R5105N231A
R5105N241A
R5105N251A
R5105N261A
R5105N271A
R5105N281A
R5105N291A
R5105N301A
R5105N311A
R5105N321A
R5105N331A
R5105N341A
R5105N351A
R5105N361A
R5105N371A
R5105N381A
R5105N151C
R5105N161C
R5105N171C
R5105N181C
R5105N191C
R5105N201C
R5105N211C
R5105N221C
R5105N231C
R5105N241C
R5105N251C
R5105N261C
R5105N271C
R5105N281C
R5105N291C
R5105N301C
R5105N311C
R5105N321C
R5105N331C
R5105N341C
R5105N351C
R5105N361C
R5105N371C
R5105N381C
3 A
3 B
3 C
3 D
3 E
3 F
3 G
3 H
3 J
3 K
3 L
3 M
3 N
3 P
3 Q
3 R
3 S
3 T
3 U
3 V
3 W
3 X
3 Y
3 Z
1 K
1 L
1 M
1 N
1 P
1 Q
1 R
1 S
1 T
1 U
1 V
1 W
1 X
1 Y
1 Z
R5105N391A
R5105N401A
R5105N411A
R5105N421A
R5105N431A
R5105N441A
R5105N451A
R5105N461A
R5105N471A
R5105N481A
R5105N491A
R5105N501A
R5105N511A
R5105N521A
R5105N531A
R5105N541A
R5105N551A
4 A
4 B
4 C
4 D
4 E
4 F
4 G
4 H
4 J
4 K
4 L
4 M
4 N
4 P
4 Q
4 R
4 S
2 A
2 B
2 C
2 D
2 E
2 F
2 G
2 H
2 J
2 K
2 L
2 M
2 N
2 P
2 Q
2 R
2 S
R5105N391C
R5105N401C
R5105N411C
R5105N421C
R5105N431C
R5105N441C
R5105N451C
R5105N461C
R5105N471C
R5105N481C
R5105N491C
R5105N501C
R5105N511C
R5105N521C
R5105N531C
R5105N541C
R5105N551C
Version 1.0
12
R5105N
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
R510xx151x
R510xx301x
20
20
18
16
14
12
10
8
105°C
105°C
18
25°C
25°C
16
-40°C
-40°C
14
12
10
8
6
6
4
4
2
2
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VDD (V)
Input Voltage VDD (V)
2) Detector Threshold vs. Temperature
R510xx151x
R510xx271x
1.53
2.74
2.73
2.72
2.71
2.70
2.69
2.68
2.67
2.66
1.52
1.51
1.50
1.49
1.48
1.47
-40 -25
0
25
50
75
105
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Temperature Topt (°C)
R510xx421x
4.28
4.26
4.24
4.22
4.20
4.18
4.16
4.14
4.12
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Version 1.0
13
R5105N
3) Detector Threshold Hysteresis vs. Temperature
R510xx151x
R510xx271x
7
7
6
5
4
3
6
5
4
3
-40 -25
0
25
50
75
105
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Temperature Topt (°C)
R510xx421x
7
6
5
4
3
-40 -25
0
25
50
75
105
Temperature Topt (°C)
4) Nch Driver Output Current vs. VDS
R510xx
20
18
16
14
12
10
8
VDD=6.0V
VDD=5.0V
VDD=4.0V
VDD=3.0V
VDD=2.0V
VDD=1.5V
VDD=1.0V
6
4
2
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
VDS (V)
Version 1.0
14
R5105N
5) Nch Driver Output Current vs. Input Voltage
R510xx
R510xx
VDS=0.3V
VDS=0.5V
20
18
16
14
12
10
8
20
18
16
14
12
10
8
Topt=-40°C
Topt=-40°C
Topt=25°C
Topt=105°C
Topt=25°C
Topt=105°C
6
6
4
4
2
2
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VDD (V)
Input Voltage VDD (V)
6) Pch Driver Output Current vs. Input Voltage
R510xx
R510xx
VDS=0.3V
VDS=0.5V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Topt=-40°C
Topt=25°C
Topt=105°C
Topt=-40°C
Topt=25°C
Topt=105°C
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VDD (V)
Input Voltage VDD (V)
R510xx
VDS=1.0V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Topt=-40°C
Topt=25°C
Topt=105°C
0
1
2
3
4
5
6
Input Voltage VDD (V)
Version 1.0
15
R5105N
7) Released Delay Time vs. Input Voltage
R510xx
8) Released Delay Time vs. Temperature
R510xx
Topt=25°C
V
DD=6V
500
500
480
460
440
420
400
380
360
340
320
300
480
460
440
420
400
380
360
340
320
300
0
1
2
3
4
5
6
7
-40 -25
0
25
50
75
105
Input Voltage VDD (V)
Temperature Topt (°C)
9) Detector Output Delay Time vs. Temperature 10) WDT Reset Timer vs. Temperature
R510xx
R510xx
100
90
80
70
60
50
40
30
20
10
0
50
48
46
44
42
40
38
36
34
32
30
1µs
-VDET+1V
-VDET 1V
Input Voltage
-
-40 -25
0
25
50
75
105
-40 -25
0
25
50
75
105
Temperature Topt (°C)
Temperature Topt (°C)
11) WDT Timeout Period vs. Temperature
12) WDT Reset Timer vs. Input Voltage
R510xx
R510xx
400
380
360
340
320
300
280
260
240
220
200
50
48
46
44
42
40
38
36
34
32
30
-40 -25
0
25
50
75
105
1
2
3
4
5
6
Temperature Topt (°C)
Input Voltage VDD (V)
Version 1.0
16
R5105N
13) WDT Timeout Period vs. Input Voltage
R510xx
14) Output Delay Time vs. External Capacitance
R510xx
1000
400
380
360
340
320
300
280
260
240
220
200
100
tPLH
10
1
1µs 1µs
Input
Voltage
-VDET+1V
-VDET 1V
0.1
-
0.01
0.001
tPHL
1
2
3
4
5
6
0.1
1
10
100
External Capacitance C
D
(nF)
Input Voltage VDD (V)
TECHNICAL NOTES
When R510xxxx1A (Nch Open Drain Output Type) is used in Figure A or Figure B, if impedance of Voltage
Supply pin, VDD and VDD of this IC is large, detector threshold level would shift by voltage dropdown caused by
the consumption current of the IC itself. Released voltage may also shift and delay time for start-up might be
generated by this usage.
When R510xxxx1C (CMOS Output Type) is used in Figure A or Figure B, Output level could be unstable by
cross conduction current which is generated at detector threshold level or at released voltage level, therefore, do
not use this IC with the connection in Figure A or Figure B.
The connection in Figure C may cause the oscillation in both R510xxxx1A (Nch Open Drain Output) and
R510xxxx1C (CMOS Output), therefore do not use R510xx Series with the connection in Figure C.
VDD
VDD
VDD
R1
R1
R1
VDD
VDD
VDD
R2
R510xx Series
R510xx Series
R510xx Series
RESETB
RESETB
RESETB
R2
GND
GND
GND
Figure A
Figure B
Figure C
Version 1.0
17
1.The products and the product specifications described in this document are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest information
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otherwise taking out of your country the products or the technical information described herein.
4.The technical information described in this document shows typical characteristics of and example
application circuits for the products. The release of such information is not to be construed as a
warranty of or a grant of license under Ricoh's or any third party's intellectual property rights or any
other rights.
5.The products in this document are designed for automotive applications. However, when using the
products for automotive applications, please make sure to contact Ricoh sales representative in
advance due to confirming the quality level.
6.We are making our continuous effort to improve the quality and reliability of our products, but
semiconductor products are likely to fail with certain probability. In order to prevent any injury to
persons or damages to property resulting from such failure, customers should be careful enough to
incorporate safety measures in their design, such as redundancy feature, firecontainment feature and
fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from
misuse or inappropriate use of the products.
7.Anti-radiation design is not implemented in the products described in this document.
8.Please contact Ricoh sales representatives should you have any questions or comments concerning
the products or the technical information.
Ricoh is committed to reducing the environmental loading materials in electrical devices
with a view to contributing to the protection of human health and the environment.
Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since
Halogen Free
April 1, 2012.
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