L5956 データシートの表示（PDF） - STMicroelectronics
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L5956 Datasheet PDF : 16 Pages
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L5956
Electrical specifications
Table 4. Electrical characteristics (continued)
(VS = 14.4V; Tamb = 25°C; unless otherwise specified)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
VHOLD F High VIN1 threshold
VHYS (HOLD_M) Hysteresis high TH.
VIN1 High TH.
IGNITION BUFFER (push-pull with Schmidt trigger)
18
20
22
V
200
500 mV
IGNIN
IGNout falling
IGNIN
IGNout rising
Vhys(IGNout) Hysteresis of ignition buffer
IHsource(IGNout) High level source current
ILsink(IGNout) Low level sink current
Vol
Low level
Voh
High level
IGNRISE Rising time
IGNFALL Fall time
ICLAMP
Input clamp current
IGNIN
Input voltage
IGNout = 0V
IGNout = 5V
ILsink (IGNout) = 1mA
C = 15pF
C = 15pF
VCC < VIGN < 50V
Operative
ENABLE INPUT (regulators 1,3,4 and power switch)
1.03 1.17 1.28
V
1.18 1.27 1.33
V
50
mV
1000 1500 2000 µA
10
15
20
mA
0.3 0.5
V
4.5 Vreg2 5.5
V
10
µs
10
µs
2
mA
0
50
V
VTH
Voltage threshold
1.3 1.8 2.3
V
ENIN
Input voltage
Operative
0
5
V
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
470 µF
100 nF
VIN1
EN SW
EN 1
470 µF
BU
VIN2
EN 4
POWER
SWITCH
REG1
REG2
REG3
REG4
10 KΩ IGNIN
1 nF
THERMAL
DUMP LOAD
PROTECTION PROTECTION
IGNITION
BUFFER
IGNOUT
SW
REG 1
22 µF
REG 2
Cfilt (*)
REG 3
Cfilt (*)
10 KΩ
REG 4
Cfilt (*)
HOLD
to µProcessor
Cfilt (*)
RESET
BUFFER
RES
CRES
to µProcessor
47 nF
AC00427
(*) 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)
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