L5955 datasheet(5/17 Pages) STMICROELECTRONICS

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L5955

Electrical specification

5/17

2.3

Electrical characteristics

Table 4.

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)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

IqST-BY

Stand-by quiescent current

Vbat = 14V, EN = 0.

IST-BY1 = Istby2=100uA,

IQ(Vbat)=Ivbat1+Ivabt2+Ivbat3

170

μA

Maximum quiescent current

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

100

IEN

Enable input current

Vbat = 14V; 5V<Enable ≥ 0V;

μA

VIL

VIH

Enable threshold voltage

Vbat = 14V;

0.8

VL MRST

MRST output voltage

VST-BY1 = 0.5V to VTH (ST-BY1)

VST-BY2 = 0.5V to VTH (ST-BY2)

Rising

0.4

VH MRST

VST-BY1 = VTH (ST-BY1) to 0.5V

VST-BY2 = VTH (ST-BY2) to 0.5V

Falling

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

· 0.97

VST-BY1

· 0.97

td MRST

MRST delay time

see Figure 4

μs

tpor MRST Power on reset delay time

CMRSTLY = 220nF

see Figure 4

tf MRST

MRST fall time

RRST = 47kΩ, CRST = 50pF

see Figure 4

μs

ISCR MRST MRSTDLY current

MRSTDLY = 0

μA

ILKG

MRSTDLY

MRSTDLY leakage current

MRSTDLY = 5V

μA

Vsat

MRSTDLY

MRSTDLY saturation voltage

IMRSTDLY =0.5mA

0.4

VTH

LVWIN input voltage threshold

1.25 V (nominal)

1.22

1.28

ILKG

lvwin input leakage current

µA

VOH

LVW output voltage

IOH=-100µA

VSTBY1

-0.2

VSTBY1

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