L5956PD [STMICROELECTRONICS]
Multifunction voltage regulator for car radio; 汽车收音机的多功能稳压器
| 型号： | L5956PD |
| 厂家： | 
ST |
| 描述： | Multifunction voltage regulator for car radio |
| 文件： | 总16页 (文件大小：232K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
L5956
Multifunction voltage regulator for car radio
Features
■ Four outputs:
– 8.5V @ 500mA
– 5V @ 300mA Permanent
– 5V @ 800mA
PowerSO20 (slug-up)
Multiwatt15 (vertical)
– 3.3V @ 800mA
■ 2A high side driver
■ Reset function
■ Ignition comparator
■ Load dump protection
■ Thermal shutdown
■ Overcurrent limitation
■ All pins ESD protected
Description
The L5956 contains a triple voltage regulator and
a power switch.
The IC includes a monitoring circuit for detection.
The IC features a very low quiescent under stand-by
.
Table 1.
Device summary
Order code
Package
Packing
L5956
Multiwatt-15 (vertical)
PowerSO-20
Tube
Tube
L5956PD
L5956PDTR
PowerSO-20
Tape and reel
August 2007
Rev 1
1/16
www.st.com
1
Contents
L5956
Contents
1
Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1
1.2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
2.2
2.3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
4
5
Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16
L5956
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
3/16
List of figures
L5956
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 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Timing diagram of regulators and power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Short circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 10. PowerSO20 (slug-up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 13
Figure 11. Multiwatt 15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 14
4/16
L5956
Block diagram and pins description
1
Block diagram and pins description
1.1
Block diagram
Figure 1.
Block diagram
POWER
SWITCH
VINI (MAIN)
EN_SW
SW
REG 1(8.5V)
REG1
REG2
REG3
REG4
EN 1_3(8.5V_5V)
REG 2(PERM)(5V)
REG 3(5V)
BU
VIN2
REG 4(3.3V)
HOLD
EN 4(3.3V)
THERMAL
DUMP LOAD
PROTECTION PROTECTION
RES
RESET
BUFFER
CRES
IGNITION
BUFFER
IGNIN
D02AU1342
IGNOUT
1.2
Pins description
Figure 2.
Pins connection (top view)
15
14
13
12
11
10
9
VIN2
REG3
REG1
SWITCH
BU
VIN2
REG3(5V)
N.C.
1
2
REG4(3.3V)
IGNIN
20
19
18
17
16
15
14
13
12
11
3
IGNOUT
RES
REG2
VIN1
REG1(8.5V)
SW
4
5
CRES
8
GND
N.C.
6
ENREG4(3.3V)
ENREG1_3(8.5V_5V)
EN_SW
7
HOLD
EN SW
EN REG1,3
EN REG4
CRES
RES
VIN1
7
6
BU
8
5
REG2(5V)
HEATSINK
9
HOLD
4
10
GND
3
2
D02AU1343
1
REG4
PowerSO
D03AU1513
Multiwatt
5/16
Electrical specifications
L5956
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 at 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
Table 4.
Electrical characteristics
(V = 14.4V; T
= 25°C; unless otherwise specified)
S
amb
Symbol
INPUT SUPPLIES
Parameter
Test condition
Min.
Typ.
Max.
Unit
Vin1
Vin2
Vin1
Vin2
Input supply voltage 1
Operating
9
6
18
18
V
V
Input supply voltage 2
Input supply voltage 1
Input supply voltage 2
Operating
Reverse polarity
Reverse polarity
non operating
non operating
Stand-by (-20°C to 85°C)
IGNIN = 5V
60
µA
mA
µA
V
REGx = 5V, REGsw = 5V,
IGNIN = 5V
Iq
Total quiescent current
Battery overvoltage
5
Stand-by (-20°C to 85°C)
IGNIN = 5V, VCC = 18V
100
20
170
22
Load dump
Vin1
Vin1
18
6/16
L5956
Electrical specifications
Table 4.
Electrical characteristics (continued)
(V = 14.4V; T = 25°C; unless otherwise specified)
S
amb
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Load dump
Vin2
Battery overvoltage
Vin2
18
20
22
V
REGULATOR 1
Vo (REG 1)
Output voltage 8.5V
Line regulation
8
8.5
9
50
50
100
5
V
ΔV
ΔV
ΔVi
Iq
Vin1 = 10 to 18V; I = 500mA
Vin1 = 9.3 to 18V; I = 10mA
mV
mV
mV
mA
Line regulation
Load regulation
Quiescent current
Ireg1 = 1 to 500mA
Ireg1 = 10mA
f = 1KHz; Vin1 = 1.5Vpp;
Io = 500mA
PSRR
Supply voltage ripple rejection
50
dB
Vdrop
Im
Drop out voltage
Current limit
Ireg1 = 500mA (1)
0.6
1.2
V
A
Rshort = 0.5Ω
0.6
REGULATOR 2
Vo (ST BY)
Output voltage 5V
Line regulation
Line regulation
Load regulation
Quiescent current
4.75
5
5.25
50
V
ΔV
ΔV
ΔVi
Iq
Vin1 = 7 to 18V; I = 300mA
mV
mV
mV
mA
V
in1 = 6 to 18V; I = 10mA
50
I
reg2 = 1 to 300mA
100
3
Ireg2 = 10mA
f = 1KHz; Vin1 = 1.5Vpp;
Io = 300mA
PSRR
Supply voltage ripple rejection
50
dB
Vdrop
Vdrop
Im
Drop out voltage
Drop out voltage
Current limit
Ireg2 = 300mA (1)
Ireg2 = 100mA (1)
Rshort = 0.5Ω
1.5
0.6
V
V
400
800
mA
REGULATOR 3
Vo (REG 3)
Output voltage 5V
Line regulation
Line regulation
Load regulation
Quiescent current
4.75
5
5.25
50
V
ΔV
ΔV
ΔVi
Iq
Vin2 = 7 to 18V; I = 800mA
mV
mV
mV
mA
V
in2 = 6 to 18V; I = 10mA
50
I
reg3 = 1 to 800mA
100
5
Ireg3 = 10mA
f = 1KHz; Vin1 = 1.5Vpp;
Io = 800mA
PSRR
Supply voltage ripple rejection
50
1
dB
Vdrop
Im
Drop out voltage
Current limit
Ireg3 = 800mA (1)
1.5
2
V
A
Rshort = 0.5Ω
7/16
Electrical specifications
L5956
Unit
Table 4.
Electrical characteristics (continued)
(V = 14.4V; T = 25°C; unless otherwise specified)
S
amb
Symbol
Parameter
Test condition
Min.
Typ.
Max.
REGULATOR 4
Vo (REG 4)
Output voltage 3.3V
3.15
3.3
3.45
50
V
ΔV
ΔV
ΔVi
Iq
Line regulation
Line regulation
Load regulation
Quiescent current
Vin2 = 6 to 18V; I = 800mA
mV
mV
mV
mA
V
in2 = 6 to 18V; I = 10mA
50
Ireg4 = 1 to 800mA
Ireg4 = 10mA
100
5
f = 1KHz; Vin1 = 1.5Vpp;
Io = 800mA
Ireg4 = 800mA(1)
PSRR
Supply voltage ripple rejection
50
1
dB
Vdrop
Im
POWER SWITCH
VdropSW Drop voltage power switch
IpSW1
Drop out voltage
2.5
2
V
A
Current limit
Rshort = 0.5Ω
IdcSW = 1.8A max.
Peak time < 15ms
Peak time > 40ms
0.5
3.5
2
V
A
Peak current power switch
Peak current power switch
Delay protection
2
1
IpSW2
A
SWDEL
15
40
ms
RESET BUFFER (with push-pull buffer)
RES
RES
RES falling
Vreg2 = 5V
Vreg2 = 5V
4.6
4.65
50
4.7
4.8
4.8
4.95
200
1600
18
V
V
RES rising
VHYS(RES)
Hysteresis of reset buffer
100
1300
16
mV
µA
mA
ms
µs
µA
mA
V
IHsource (RES) High level source current
Reset = 0V
Reset = 5V
1000
14
ILsink (RES)
RES delay
ΔTRES
ICharge
Low level sink current
Cres = 47nF
10
60
Reset rise and fall time
Charge current
R = 10kΩ C = 15pF
CRES = 0V
50
3
1
5
10
IDischarge
VTH(F)
VTH(R)
Vol
Discharge current
Falling voltage threshold
Rising voltage threshold
Low level
CRES = 5V
3
1
1.2
2.8
1.4
3.5
0.5
5.5
2.5
V
ISINK(RES) = 1mA
0.3
V
Voh
High level
4.5
10
Vreg2
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
18
Vlowl
Hold output low for Vin1 high
Low VIN1 threshold
low detection
VIN1 Low TH.
22
9
V
V
VHOLD R
9.5
10
VHYS (HOLD_L) Hysteresis low TH.
50
150
200
mV
8/16
L5956
Electrical specifications
Table 4.
Electrical characteristics (continued)
(V = 14.4V; T = 25°C; unless otherwise specified)
S
amb
Symbol
VHOLD F
VHYS (HOLD_M) Hysteresis high TH.
IGNITION BUFFER (push-pull with Schmidt trigger)
Parameter
Test condition
Min.
Typ.
Max.
Unit
High VIN1 threshold
VIN1 High TH.
18
20
22
V
200
500
mV
IGNIN
IGNIN
IGNout falling
1.03
1.18
1.17
1.27
50
1.28
1.33
V
V
IGNout rising
Vhys(IGNout)
Hysteresis of ignition buffer
mV
µA
mA
V
IHsource(IGNout) High level source current
ILsink(IGNout) Low level sink current
IGNout = 0V
1000
10
1500
15
2000
20
IGNout = 5V
Vol
Low level
ILsink (IGNout) = 1mA
0.3
0.5
5.5
10
Voh
High level
4.5
Vreg2
V
IGNRISE
IGNFALL
ICLAMP
IGNIN
Rising time
Fall time
C = 15pF
µs
µs
mA
V
C = 15pF
10
Input clamp current
Input voltage
VCC < VIGN < 50V
Operative
2
0
50
ENABLE INPUT (regulators 1,3,4 and power switch)
VTH
Voltage threshold
Input voltage
1.3
0
1.8
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
EN 1
Cfilt (*)
Cfilt (*)
470 µF
BU
VIN2
Cfilt (*)
Cfilt (*)
10 KΩ
REG 4
HOLD
EN 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: C range = 5 µF to 100 µF, ESR range= 0.5 Ω to 10 Ω (T= -40 ˚C to +85 ˚C)
9/16
Timing diagrams
L5956
3
Timing diagrams
Figure 4.
Timing diagram of regulators and power switch
DUMP
VM
VIN1=VIN2
9V
8.5V
REG1(8.5V)
5V
REG3(5V)
EN1-3
3.3V
REG4(3.3V)
EN4
5V
VM
REG2(5V)
POWER SWITCH
9V
EN-SW
D02AU1420B
18V < VM ≤ 22V
Figure 5.
Backup and reset diagram
VBATT
14
5
BACKUP CAP.
5V PERM
4.8
4.7
t
5
3
CDELAY
RESET
t
t
D02AU1422
10/16
L5956
Timing diagrams
Figure 6.
Hold and thermal protection
DUMP
9.5V
8.5V
5V
22
18
3.3V
VIN1
9
5
HOLD
ON
T≅160
TEMPERATURE
PROTECTION
8.5V
REG1(8.5V)
5V
REG2(5V)
5V
REG3(5V)
3.3V
REG4(3.3V)
5V
EN1-3
EN4
D02AU1423A
Figure 7.
Ignition buffer diagram
50V
IGNITION
INPUT
1.27V
1.17V
IGNITION
OUTPUT
LOAD DUMP
14V
VIN1
D02AU1424
Figure 8.
Protection of the power switch
V
SW
16V
DELAYED
NOT
DELAYED
IN CASE
<16V
V
IN1
1.5A
3A
I
SW
D02AU1425
11/16
Timing diagrams
Figure 9.
L5956
Short circuit diagram
SHORT TO GND
REG1
SHORT TO GND
REG2
REG3
REG4
SHORT TO GND
SHORT TO GND
SHORT TO GND
SWITCH
HOLD
12/16
L5956
Package information
4
Package information
®
In order to meet environmental requirements, ST offers this device in ECOPACK packages.
These packages have a Lead-free second level interconnect. The category of second level
Interconnect is marked on the package and on the inner box label, in compliance with
JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also
marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 10. 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
13/16
Package information
L5956
Figure 11. Multiwatt 15 (vertical) mechanical data and package dimensions
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
L5956
Revision history
5
Revision history
Table 5.
Date
29-Aug-2007
Document revision history
Revision
Changes
1
Initial release.
15/16
L5956
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