L5957PD [STMICROELECTRONICS]
Multifunction voltage regulator for car radio; 汽车收音机的多功能稳压器
| 型号： | L5957PD |
| 厂家： | 
ST |
| 描述： | Multifunction voltage regulator for car radio |
| 文件： | 总16页 (文件大小：208K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
L5957
Multifunction voltage regulator for car radio
Features
■ Four outputs:
– 8.5 V @ 500 mA
– 5 V @ 300 mA Permanent
– 5 V @ 800 mA
– 3.3 V @ 800 mA
Multiwatt15 (Vertical)
■ 2 A high side driver
■ Reset function
■ Ignition comparator
■ Load dump protection
■ Thermal shutdown
■ Overcurrent limitation
■ All pins ESD protected
PowerSO20 (Slug up)
The IC includes a monitoring circuit for detection.
The IC features a very low quiescent current in
Description
The L5957 contains a triple voltage regulator and
a power switch.
standby.
Table 1.
Device summary
Order code
Package
Packing
L5957PD
L5957PDTR
L5957
PowerSO20 (slug up)
PowerSO20 (slug up)
Multiwatt15 (Vertical)
Tube
Tape and reel
Tube
January 2010
Doc ID 14442 Rev 2
1/16
www.st.com
1
Contents
L5957
Contents
1
2
Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
2.2
2.3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
4
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16
Doc ID 14442 Rev 2
L5957
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Doc ID 14442 Rev 2
3/16
List of figures
L5957
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pins connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum ESR for stability valid for all the regulators outputs . . . . . . . . . . . . . . . . . . . . . . 10
Timing diagram of regulators and power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 10. Short circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. PowerSO20 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 13
Figure 12. Multiwatt15 (vertical) mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . 14
4/16
Doc ID 14442 Rev 2
L5957
Block and pins connection diagrams
1
Block and pins connection diagrams
Figure 1.
Block diagram
POWER
SWITCH
VINI (MAIN)
EN_SW
SW
REG 1(8.5V)
REG1
REG2
REG3
REG4
REG 2(PERM)(5V)
REG 3(5V)
BU
VIN2
ENREG3(5V)
REG 4(3.3V)
HOLD
ENREG1-4(8.5V, 3.3V)
THERMAL
DUMP LOAD
PROTECTION PROTECTION
RES
RESET
BUFFER
CRES
IGNITION
BUFFER
IGNIN
D02AU1342/L5957
IGNOUT
Figure 2.
Pins connection
VIN2
1
2
3
4
5
REG4(3.3V)
IGNIN
20
19
18
17
16
15
14
13
12
11
REG3(5V)
N.C.
IGNOUT
RES
REG1(8.5V)
SW
CRES
PowerSO
N.C.
6
7
ENREG1-4(8.5V, 3.3V)
ENREG3(5V)
EN_SW
VIN1
BU
8
REG2(5V)
HEATSINK
9
HOLD
10
GND
D02AU1343 /L5957
15
VIN2
14
13
12
11
10
9
REG3
REG1
SWITCH
BU
REG2
VIN1
8
GND
Multiwatt
7
HOLD
EN SW
ENREG1, 4
ENREG3
CRES
RES
6
5
4
3
2
1
REG4
D03AU1513/L5957
Doc ID 14442 Rev 2
5/16
Electrical specifications
L5957
2
Electrical specifications
2.1
Absolute maximum ratings
Table 2.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
VSDC
VSTR
IO
DC operating supply voltage
Transient supply voltage
Output current
30
50
V
V
internally limited
-40 to 85
-55 to 150
-55 to 150
43
Top
Tstg
Tj
Operating temperature range
Storage temperature
°C
°C
°C
W
Junction temperature
Pd
Power dissipation Tcase = 85 °C
2.2
Thermal data
Table 3.
Symbol
Thermal data
Parameter
PowerSO Multiwatt
Unit
Rth j-case Thermal resistance junction-to-case
Max.
1.5
1.8
°C/W
2.3
Electrical characteristics
V = 14.4 V; T
= 25 °C; unless otherwise specified.
S
amb
Table 4.
Electrical characteristics
Parameter
Symbol
Test condition
Min.
Typ.
Max.
Unit
Input supplies
Vin1
Vin2
Input supply voltage 1
Input supply voltage 2
Operating
9
6
-
-
18
18
V
V
Operating
Standby (-20 °C to 85 °C)
IGNIN = 5 V
-
-
-
5
70
-
μA
mA
µA
V
REGx = 5 V, REGsw = 5 V,
IGNIN = 5 V
Iq
Total quiescent current
Battery over voltage
Standby (-20 °C to 85 °C)
IGNIN = 5 V, VCC = 18 V
-
100
20
20
-
Load Dump
Vin1
Vin1
Vin2
18
18
22
22
Load Dump
Vin2
V
6/16
Doc ID 14442 Rev 2
L5957
Electrical specifications
Table 4.
Electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Regulator 1
Vo (REG 1)
Output voltage 8.5 V
Line regulation
-
8
-
8.5
9
50
50
100
5
V
V
in1 = 10 to 18 V; I = 500 mA
-
-
-
-
mV
mV
mV
mA
ΔV
Vin1 = 9.3 to 18 V; I = 10 mA
Ireg1 = 1 to 500 mA
Ireg1 = 10 mA
-
ΔVi
Load regulation
-
Iq
Quiescent current
-
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 500 mA
PSRR
Supply voltage ripple rejection
50
-
-
dB
Vdrop
Im
Drop out voltage
Current limit
Ireg1 = 500 mA (1)
-
-
-
0.6
1.2
V
A
Rshort = 0.5 Ω
0.6
Regulator 2
Vo (ST BY)
Output voltage 5 V
Line regulation
-
4.7
5
-
5.3
50
50
100
3
V
V
in1 = 7 to 18 V; I = 300 mA
Vin1 = 6 to 18 V; I = 10 mA
reg2 = 1 to 300 mA
-
-
-
-
mV
mV
mV
mA
ΔV
-
ΔVi
Load regulation
I
-
Iq
Quiescent Current
Ireg2 = 10 mA
-
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 300 mA
PSRR
Vdrop
Supply voltage ripple rejection
50
-
-
dB
I
reg2 = 300 mA (1)
-
-
-
-
-
1.5
0.6
800
V
V
Drop out voltage
Current limit
Ireg2 = 100 mA (1)
Im
Rshort = 0.5 Ω
400
mA
Regulator 3
Vo (REG 3)
Output voltage 5V
Line regulation
-
4.75
5
-
5.25
50
V
V
in2 = 7 to 18 V; I = 800 mA
in2 = 6 to 18 V; I = 10 mA
-
-
-
-
mV
mV
mV
mA
ΔV
V
-
50
ΔVi
Load regulation
Ireg3 = 1 to 800 mA
Ireg3 = 10 mA
-
100
5
Iq
Quiescent current
-
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 800 mA
PSRR
Supply voltage ripple rejection
50
-
-
dB
Vdrop
Im
Drop out voltage
Current limit
Ireg3 = 800 mA (1)
-
-
-
1.5
2
V
A
Rshort = 0.5 Ω
1
Regulator 4
Vo (REG 4)
ΔV
Output voltage 3.3V
Line regulation
-
3.10
3.3
3.50
50
V
Vin2 = 6 to 18 V; I = 800 mA
-
-
-
-
mV
mV
ΔV
Line regulation
V
in2 = 6 to 18 V; I = 10 mA
50
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Electrical specifications
L5957
Unit
Table 4.
Symbol
Electrical characteristics (continued)
Parameter
Load regulation
Test condition
Min.
Typ.
Max.
ΔVi
Ireg4 = 1 to 800 mA
Ireg4 = 10 mA
-
-
-
-
100
5
mV
mA
Iq
Quiescent current
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 800 mA
PSRR
Supply voltage ripple rejection
48
-
-
dB
Vdrop
Im
Drop out voltage
Current limit
Ireg4 = 800 mA (1)
-
-
-
2.65
2
V
A
Rshort = 0.5 Ω
0.9
Power switch
VdropSW
IpSW1
Drop voltage power switch
Peak current power switch
Delay Protection
IdcSW = 1.8 A max.
Peak time < 10 ms
Peak time > 40 ms
-
-
2
-
-
-
-
0.5
3.5
2
V
A
IpSW2
1
A
SWDEL
15
45
ms
Reset buffer (with push-pull buffer)
RES
RES
RES falling
Vreg2 = 5 V
4.6
4.65
50
1000
14
10
-
4.7
4.8
-
4.8
4.95
200
1600
18
V
V
RES rising
Vreg2 = 5 V
VHYS(RES)
Hysteresis of reset buffer
-
mV
μA
mA
ms
μs
μA
mA
V
IHsource (RES) High level source current
Reset = 0 V
1300
16
-
ILsink (RES)
RES delay
ΔTRES
ICharge
Low level sink current
Cres = 47nF
Reset = 5 V
-
60
Reset rise and fall time
Charge current
R = 10 kΩ C = 15 pF
-
50
CRES = 0 V
3
5
10
IDischarge
VTH(F)
VTH(R)
Vol
Discharge current
Falling voltage threshold
Rising voltage threshold
Low level
CRES = 5 V
1
-
3
-
1
1.2
2.8
0.3
Vreg2
1.4
3.5
0.5
5.5
-
2.5
V
ISINK(RES) = 1 mA
-
V
Voh
High level
4.5
V
Hold signal
VlowI
Hold output low for Vin1 low
Low detection
-
-
-
9
V
V
Hold output high for Vin1
normal
Vlowh
Normal high detection
10
18
Vlowl
Hold output low for Vin1 high
Low VIN1 threshold
low detection
22
9
-
-
V
V
VHOLD R
VIN1 Low TH.
9.5
150
20
10
VHYS (HOLD_L) Hysteresis low TH.
VHOLD F High VIN1 threshold
VHYS (HOLD_M) Hysteresis high TH.
-
50
18
50
200
22
mV
V
VIN1 High TH.
-
150
250
mV
8/16
Doc ID 14442 Rev 2
L5957
Electrical specifications
Table 4.
Electrical characteristics (continued)
Parameter Test condition
Symbol
Min.
Typ.
Max.
Unit
Ignition buffer (push-pull with schmitt trigger)
IGNIN
IGNIN
IGNout falling
-
1.03
1.17
1.28
1.33
100
2000
20
V
V
IGNout rising
-
1.18
1.27
Vhys(IGNout)
Hysteresis of ignition buffer
-
30
50
mV
μA
mA
V
IHsource(IGNout) High level source current
ILsink(IGNout) Low level sink current
IGNout = 0 V
IGNout = 5 V
ILsink (IGNout) = 1 mA
-
1000
1500
10
15
Vol
Low level
-
4.5
-
0.3
0.5
5.5
10
Voh
High level
Vreg2
V
IGNRISE
IGNFALL
ICLAMP
IGNIN
Rising time
Fall time
C = 15 pF
C = 15 pF
VCC < VIGN < 50 V
Operative
-
-
-
-
μs
μs
mA
V
-
10
Input clamp current
Input voltage
-
2
0
50
Enable input (regulators 1,3,4 and power switch)
VTH
Voltage threshold
Input voltage
-
1.3
0
-
-
2.3
5
V
V
ENIN
Operative
1. Drop condition means that the supply voltage drop down to 100 mV from the regulated output and the regulator is sourcing
its maximal load current.
Figure 3.
Typical application circuit
Vs
VIN1
SW
POWER
SWITCH
EN SW
22 µF
470 µF
REG 1
REG 2
REG 3
REG1
REG2
REG3
REG4
100 nF
Cfilt (*)
Cfilt (*)
470 µF
BU
VIN2
ENREG3
Cfilt (*)
Cfilt (*)
10 KΩ
REG 4
HOLD
ENREG1-4
to µProcessor
THERMAL
DUMP LOAD
PROTECTION PROTECTION
RES
CRES
RESET
BUFFER
to µProcessor
47 nF
10 KΩ
IGNIN
IGNITION
BUFFER
1 nF
AC00427
IGNOUT
(*) Recommended output filtering capacitors for all the regulators: C range = 5 µF to 100 µF, ESR range = 0.5 Ω to 10 Ω (T= -40 ˚C to +85 ˚C)
Doc ID 14442 Rev 2
9/16
Electrical specifications
Figure 4.
L5957
Maximum ESR for stability valid for all the regulators outputs
ESR
[Ω]
Maximum ESR
10
5
Stable region
1
Minimum ESR
0.5
10
100
5
C [µF]
AC00591
Figure 5.
Timing diagram of regulators and power switch
DUMP
V
M
VIN1=VIN2
9V
8.5V
REG1(8.5V)
3.3V
REG4(3.3V)
ENREG1-4
REG3(5V)
ENREG3
5V
5V
REG2(5V)
V
M
POWER SWITCH
9V
EN-SW
D02AU1420A
18V ≤ VM ≤ 22V
10/16
Doc ID 14442 Rev 2
L5957
Electrical specifications
Figure 6.
Backup and reset diagram
VBATT
14
BACKUP CAP.
5V PERM
5
4.8
4.7
t
5
CDELAY
3
t
t
RESET
D02AU1422
Figure 7.
Hold and thermal protection
DUMP
9V
8.5V
5V
22
18
VIN1
3.3V
9.5
5
HOLD
ON
T≅160
TEMPERATURE
PROTECTION
8.5V
REG1(8.5V)
REG2(5V)
REG3(5V)
5V
5V
3.3V
REG4(3.3V)
5V
ENREG3
ENREG1-4
D02AU1423B
Doc ID 14442 Rev 2
11/16
Electrical specifications
Figure 8.
L5957
Ignition buffer diagram
50V
IGNITION
INPUT
1.27V
1.17V
IGNITION
OUTPUT
LOAD DUMP
14V
VIN1
D02AU1424
Figure 9.
Protection of the power switch
VSW
16V
DELAYED
1.5A
NOT
DELAYED
IN CASE
VIN1 <16V
3A
ISW
D02AU1425
Figure 10. Short circuit diagram
SHORT TO GND
REG1
SHORT TO GND
REG2
REG3
SHORT TO GND
SHORT TO GND
REG4
SHORT TO GND
SWITCH
12/16
Doc ID 14442 Rev 2
L5957
Package information
3
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
®
®
ECOPACK packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
®
ECOPACK is an ST trademark.
Figure 11. PowerSO20 (slug up) mechanical data and package dimensions
mm
inch
TYP. MAX.
0.138
DIM.
MIN.
3.25
3
TYP. MAX. MIN.
OUTLINE AND
MECHANICAL DATA
A
A2
A4
A5
a1
b
3.5
3.3
1
0.128
3.15
0.2
0.118 0.124 0.130
0.031 0.039
0.25 0.006 0.008 0.010
0.8
0.15
0.030
0.4
0.23
15.8
9.4
-0.040 0.0012
0.53 0.016
0.32 0.009
16
9.8
-0.0016
0.021
0.012
0.630
0.385
c
D (1)
D1
D2
E
E1 (1) 10.9
E2
E3
e
e3
G
H
h
0.622
0.370
1
0.039
13.9
14.5 0.547
11.1 0.429
2.9
0.570
0.437
0.114
0.244
5.8
1.12
6.2
0.228
1.27
11.43
1.42 0.044 0.050 0.056
0.450
0
15.5
0.1
15.9
1.1
0
0.61
0.004
0.625
0.043
0.043
L
0.8
1.1
0.031
N
R
S
10¡ (max)
0.6
0.024
0¡ (min.) 8¡ (max.)
5¡ (min.) 7¡ (max.)
V
PowerSO20 (SLUG UP)
(1) ÒD and E1Ódo not include mold flash or protusions.
- Mold flash or protusions shall not exceed 0.15mm (0.006Ó)
- Critical dimensions: ÒEÓ,Òa1Ó,ÒeÓand ÒGÓ.
H
E3
R
N
N
A4
A5
A2
A
c
V
b
e
DETAIL A
E2
E
D2 (x2)
e3
M
h x 45û
1
10
DETAIL A
0.35
E2
E1
Gage Plane
a1
- C -
S
SEATING PLANE
L
G
C
(COPLANARITY)
D1
20
11
PSO20DME
D
0088529 C
Doc ID 14442 Rev 2
13/16
Package information
Figure 12. Multiwatt15 (vertical) mechanical data and package dimensions
L5957
mm
inch
DIM.
MIN. TYP. MAX. MIN.
TYP. MAX.
0.197
OUTLINE AND
MECHANICAL DATA
A5
B
2.65
0.104
C
1.6
0.063
D
1
0.039
E
0.49
0.66
1.02
0.55 0.019
0.75 0.026
0.022
F
0.030
G
1.27
1.52 0.040 0.050 0.060
G1
H1
H2
L
17.53 17.78 18.03 0.690 0.700 0.710
19.6
0.772
20.2
0.795
21.9
21.7
22.2
22.1
22.5 0.862 0.874 0.886
22.5 0.854 0.87 0.886
L1
L2
L3
L4
L7
M
17.65
18.1 0.695
0.713
17.25 17.5 17.75 0.679 0.689 0.699
10.3
2.65
4.25
4.73
1.9
10.7
10.9 0.406 0.421 0.429
2.9 0.104 0.114
4.55
5.08
4.85 0.167 0.179 0.191
5.43 0.186 0.200 0.214
M1
S
2.6
2.6
0.075
0.075
0.102
0.102
0.152
Multiwatt15 (vertical)
S1
Dia1
1.9
3.65
3.85 0.144
0016036 J
14/16
Doc ID 14442 Rev 2
L5957
Revision history
4
Revision history
Table 5.
Date
Document revision history
Revision
Changes
11-Feb-2008
08-Jan-2010
1
Initial release.
Updated Section 1: Block and pins connection diagrams on page 5.
Updated Figure 3, 5 and 6.
2
Doc ID 14442 Rev 2
15/16
L5957
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