L5955 查看數據表（PDF） - STMicroelectronics
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L5955 Datasheet PDF : 17 Pages
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L5955
Electrical specification
2.3
Electrical characteristics
Table 4.
Symbol
Electrical characteristics
(Refer to the application circuit, Vbat =Vbat1+Vbat2+Vbat3= 14V, IST-BY1 = 0.5mA, IST-BY2 =
0.5mA, IREG1 = IREG2 = IREG3 = IREG4 = IREG5 = IREG6 = 5mA, RHSD1 = RHSD2 = RHSD3 = 16Ω)
Parameter
Test condition
Min. Typ. Max. Unit
IqST-BY Stand-by quiescent current
Iq Maximum quiescent current
IEN Enable input current
Vbat = 14V, EN = 0.
IST-BY1 = Istby2=100uA,
IQ(Vbat)=Ivbat1+Ivabt2+Ivbat3
Vbat = 14V, EN=VSTBY1
Istby1=125mA Istby2=300mA
IREG1 = 40mA
IREG2 = 200mA, IREG3 = 850mA
IREG4 = 1A, IREG5 = 250mA
IREG6 = 200mA, IHSD1 = 2A
IHSD2,3 = 450mA
Vbat = 14V; 5V<Enable ≥ 0V;
170 μA
100
mA
μA
10
VIL Enable threshold voltage
VIH
VL MRST
MRST output voltage
VH MRST
Vbat = 14V;
2
VST-BY1 = 0.5V to VTH (ST-BY1)
0
VST-BY2 = 0.5V to VTH (ST-BY2)
0
Rising
VST-BY1 = VTH (ST-BY1) to 0.5V
0
VST-BY2 = VTH (ST-BY2) to 0.5V
0
Falling
V
0.8
V
0.4
V
0.4
0.4
V
0.4
VTH MRST MRST output voltage threshold
Force VST-BY1 & VST-BY2
Low until MRST asserted
VST-BY2
· 0.93
VST-BY1
· 0.93
VST-BY2
V
· 0.97
VST-BY1
· 0.97
V
td MRST MRST delay time
tpor MRST Power on reset delay time
see Figure 4
CMRSTLY = 220nF
see Figure 4
13
μs
20
ms
tf MRST MRST fall time
RRST = 47kΩ, CRST = 50pF
see Figure 4
1
μs
ISCR MRST MRSTDLY current
ILKG MRSTDLY leakage current
MRSTDLY
Vsat MRSTDLY saturation voltage
MRSTDLY
VTH LVWIN input voltage threshold
ILKG lvwin input leakage current
VOH LVW output voltage
MRSTDLY = 0
MRSTDLY = 5V
IMRSTDLY =0.5mA
1.25 V (nominal)
IOH=-100µA
6
0
1.22
VSTBY1
-0.2
12
μA
6
μA
0.4
V
1.28
V
2
µA
VSTBY1 V
5/17
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