ST890 datasheet(7/20 Pages) STMICROELECTRONICS

7 / 20 page

ST890

Maximum rating

7/20

VULO

Undervoltage

lockout

Rising edge

2.0

2.4

2.6

VHYST

Undervoltage

lockout hysteresis

100

RON

ON resistance

VI = 4.5 V

120

VI = 3 V

130

VSET

Reference voltage

to turn the switch

OFF

IO = 100 mA

VSET rise until VI -VO >

0.8V

1.178

1.24

1.302

IMAX

Maximum

programmable

output over

current limit

1.2

ISC

Short circuit

current limit

VI = 5V, OUT connected

to GND, device enabled

into short circuit

1.2 ILIM

1.5 ILIM

ILIM/ISET

ILIM to ISET current

ratio

IO =500 mA

VO >1.6 V

970

1110

1300

VIL

ON input low level

voltage

VI = 2.7 to 5.5 V

0.8

VIH

ON input high

level voltage

VI = 2.7 to 3.6 V

2.0

VI = 2.7 to 5.5 V

2.4

ON input leakage

current

VI =5.5 V

μA

ISET bias

ISET bias current

VSET =1.24 V

IO =0A

VI =VO

0.5

μA

VOL

FAULT output low

voltage

ISINK =1 mA

VSET = 1.4 V

0.15

IOH

FAULT output high

voltage

VFAULT =5.5 V

VSET =1V

μA

TPROT

Thermal

protection

130

°C

THYST

Thermal

hysteresis

°C

VIN =3V, TA =TMIN to TMAX, unless otherwise specified. Typical values are at TA =25°C

Table 8.

Electrical characteristics (continued)

Symbol

Parameter

Test condition(1)

Value

Unit

TA = 25°C

Min

Typ

Max

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