L5957 查看數據表（PDF） - STMicroelectronics
零件编号
产品描述 (功能)
比赛名单
L5957 Datasheet PDF : 16 Pages
| |||
Electrical specifications
Table 4. Electrical characteristics (continued)
Symbol
Parameter
Test condition
ΔVi
Iq
PSRR
Vdrop
Im
Load regulation
Quiescent current
Supply voltage ripple rejection
Drop out voltage
Current limit
Ireg4 = 1 to 800 mA
Ireg4 = 10 mA
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 800 mA
Ireg4 = 800 mA (1)
Rshort = 0.5 Ω
Power switch
VdropSW
IpSW1
IpSW2
SWDEL
Drop voltage power switch
Peak current power switch
Delay Protection
Reset buffer (with push-pull buffer)
IdcSW = 1.8 A max.
Peak time < 10 ms
Peak time > 40 ms
-
RES
RES falling
RES
RES rising
VHYS(RES)
IHsource (RES)
ILsink (RES)
RES delay
ΔTRES
Hysteresis of reset buffer
High level source current
Low level sink current
Cres = 47nF
Reset rise and fall time
ICharge
IDischarge
VTH(F)
VTH(R)
Vol
Voh
Charge current
Discharge current
Falling voltage threshold
Rising voltage threshold
Low level
High level
Hold signal
Vreg2 = 5 V
Vreg2 = 5 V
-
Reset = 0 V
Reset = 5 V
-
R = 10 kΩ C = 15 pF
CRES = 0 V
CRES = 5 V
-
-
ISINK(RES) = 1 mA
-
VlowI
Vlowh
Hold output low for Vin1 low
Hold output high for Vin1
normal
Vlowl
Hold output low for Vin1 high
VHOLD R Low VIN1 threshold
VHYS (HOLD_L) Hysteresis low TH.
VHOLD F High VIN1 threshold
VHYS (HOLD_M) Hysteresis high TH.
Low detection
Normal high detection
low detection
VIN1 Low TH.
-
VIN1 High TH.
-
L5957
Min. Typ. Max. Unit
-
-
100 mV
-
-
5
mA
48
-
-
dB
-
-
2.65
V
0.9
-
2
A
-
-
0.5
V
2
-
3.5
A
1
-
2
A
15
-
45
ms
4.6 4.7 4.8
V
4.65 4.8 4.95
V
50
-
200 mV
1000 1300 1600 μA
14
16
18
mA
10
-
60
ms
-
-
50
μs
3
5
10
μA
1
-
3
mA
1
1.2 1.4
V
2.5 2.8 3.5
V
0.3 0.5
V
4.5 Vreg2 5.5
V
-
-
9
V
10
-
18
V
22
-
-
V
9
9.5
10
V
50 150 200 mV
18
20
22
V
50 150 250 mV
8/16
Doc ID 14442 Rev 2
Share Link: 