L5956 Electrical specifications
Doc ID 13852 Rev 4 7/17
Load dump
V
in1
Battery overvoltage V
in1
18 20 22 V
Load dump
V
in2
Battery overvoltage V
in2
18 20 22 V
REGULATOR 1
V
o (REG 1)
Output voltage 8.5 V - 8 8.5 9 V
V Line regulation V
in1
= 10 to 18 V; I = 500 mA - - 50 mV
V Line regulation V
in1
= 9.3 to 18 V; I = 10 mA - - 50 mV
Vi Load regulation I
reg1
= 1 to 500 mA - - 100 mV
I
q
Quiescent current I
reg1
= 10 mA - - 5 mA
PSRR Supply voltage ripple rejection
f = 1 kHz; V
in1
= 1.5 Vpp;
I
o
= 500 mA
50 - - dB
V
drop
Drop out voltage I
reg1
= 500 mA
(2)
--0.6V
I
m
Current limit R
short
= 0.5 0.6 - 1.2 A
REGULATOR 2
V
o (ST BY)
Output voltage 5 V - 4.75 5 5.25 V
V Line regulation V
in1
= 7 to 18 V; I = 300 mA - - 50 mV
V Line regulation V
in1
= 6 to 18 V; I = 10 mA - - 50 mV
Vi Load regulation I
reg2
= 1 to 300 mA - - 100 mV
I
q
Quiescent current I
reg2
= 10 mA - - 3 mA
PSRR Supply voltage ripple rejection
f = 1 kHz; V
in1
= 1.5 Vpp;
I
o
= 300 mA
50 - dB
V
drop
Drop out voltage I
reg2
= 300 mA
(2)
--1.5V
V
drop
Drop out voltage I
reg2
= 100 mA
(2)
--0.6V
I
m
Current limit R
short
= 0.5 400 - 800 mA
REGULATOR 3
V
o (REG 3)
Output voltage 5V - 4.75 5 5.25 V
V Line regulation V
in2
= 7 to 18 V; I = 800 mA - - 50 mV
V Line regulation V
in2
= 6 to 18 V; I = 10 mA - - 50 mV
Vi Load regulation I
reg3
= 1 to 800 mA - - 100 mV
I
q
Quiescent current I
reg3
= 10 mA - - 5 mA
PSRR Supply voltage ripple rejection
f = 1 kHz; V
in1
= 1.5 Vpp;
I
o
= 800 mA
50 - - dB
V
drop
Drop out voltage I
reg3
= 800 mA
(2)
--1.5V
I
m
Current limit R
short
= 0.5 1-2A
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Electrical specifications L5956
8/17 Doc ID 13852 Rev 4
REGULATOR 4
V
o (REG 4)
Output voltage 3.3 V - 3.15 3.3 3.45 V
V Line regulation V
in2
= 6 to 18 V; I = 800 mA - - 50 mV
V Line regulation V
in2
= 6 to 18 V; I = 10 mA - - 50 mV
Vi Load regulation I
reg4
= 1 to 800 mA - - 100 mV
I
q
Quiescent current I
reg4
= 10 mA - - 5 mA
PSRR Supply voltage ripple rejection
f = 1 kHz; V
in1
= 1.5 Vpp;
I
o
= 800 mA
50 - - dB
V
drop
Drop out voltage I
reg4
= 800 mA
(2)
--2.5V
I
m
Current limit R
short
= 0.5 1-2A
POWER SWITCH
V
dropSW
Drop voltage power switch I
dcSW
= 1.8A max. - - 0.5 V
I
pSW1
Peak current power switch Peak time 15 ms 2 - 3.5 A
I
pSW2
Peak current power switch Peak time 40 ms 1 - 2 A
SW
DEL
Delay protection - 15 - 40 ms
RESET BUFFER (with push-pull buffer)
RES RES falling Vreg2 = 5 V 4.6 4.7 4.8 V
RES RES rising Vreg2 = 5 V 4.65 4.8 4.95 V
V
HYS(RES)
Hysteresis of reset buffer - 50 100 200 mV
IH
source (RES)
High level source current Reset = 0 V 1000 1300 1600 µA
IL
sink (RES)
Low level sink current Reset = 5 V 14 16 18 mA
RES
delay
Cres = 47nF - 10 - 60 ms
TRES Reset rise and fall time R = 10 k, C = 15 pF - - 50 µs
I
Charge
Charge current C
RES
= 0 V 3 5 10 µA
I
Discharge
Discharge current C
RES
= 5 V 1 - 3 mA
V
TH(F)
Falling voltage threshold - 1 1.2 1.4 V
V
TH(R)
Rising voltage threshold - 2.5 2.8 3.5 V
V
ol
Low level I
SINK(RES)
= 1 mA - 0.3 0.5 V
V
oh
High level - 4.5 Vreg2 5.5 V
HOLD SIGNAL
V
lowI
Hold
output low for V
in1
low Low detection - - 9 V
V
lowh
Hold output high for V
in1
normal
Normal high detection 10 - 18 V
V
lowl
Hold output low for V
in1
high low detection 22 - - V
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
L5956 Electrical specifications
Doc ID 13852 Rev 4 9/17
V
HOLD R
Low V
IN1
threshold V
IN1
Low TH. 9 9.5 10 V
V
HYS (HOLD_L)
Hysteresis low TH. - 50 150 200 mV
V
HOLD F
High V
IN1
threshold V
IN1
High TH. 182022 V
V
HYS (HOLD_M)
Hysteresis high TH. - 200 500 mV
IGNITION BUFFER (push-pull with Schmidt trigger)
IGN
IN
IGN
out falling
- 1.031.171.28 V
IGN
IN
IGN
out rising
- 1.181.271.33 V
V
hys(IGNout)
Hysteresis of ignition buffer - - 50 - mV
IH
source(IGNout)
High level source current I
GNout
= 0 V 1000 1500 2000 µA
IL
sink(IGNout)
Low level sink current I
GNout
= 5 V 101520mA
V
ol
Low level IL
sink (IGNout)
= 1 mA - 0.3 0.5 V
V
oh
High level - 4.5 Vreg2 5.5 V
IGN
RISE
Rising time C = 15 pF - - 10 µs
IGN
FALL
Fall time C = 15 pF - - 10 µs
I
CLAMP
Input clamp current V
CC
< V
IGN
< 50 V - - 2 mA
IGN
IN
Input voltage Operative 0 - 50 V
ENABLE INPUT (regulators 1,3,4 and power switch)
V
TH
Voltage threshold - 1.3 1.8 2.3 V
EN
IN
Input voltage Operative 0 - 5 V
1. “Non operating” should be intended as a condition outside the absolute maximum ratings defined for the IC. As such, if the
device is operated under such conditions, it is not guaranteed that the electrical parameters are inside the specification
range.
2. 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.
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit

L5956

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Power Management Specialized - PMIC Multifunction Voltage Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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