ST890BD View Datasheet(PDF) - STMicroelectronics
Part Name
Description
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ST890BD Datasheet PDF : 7 Pages
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ST890
ELECTRICAL CHARACTERISTICS (VIN=3V, TA = TMIN to TMAX, unless otherwise specified. Typical
values are at TA = 25 °C)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VI Operating Voltage
ID =1mA
2.7
5.5
V
ICC ON Quiescent Supply
Current
VI = 5V,
ON=GND IO =0
13
25
µA
I(CCOFF) OFF Quiescent Supply
Current
ON=IN
ON=IN
VI = VOUT =5.5V
VI = 5.5V VO =0
1
µA
5
VULO Undervoltage Lockout
Rising Edge
2.0
2.4
2.6
V
VHYST Undervoltage Lockout
Hysteresys
100
mV
RON ON Resistance
VI = 4.5V
75
120 mΩ
VI = 3V
90 130
VSET Reference Voltage to Turns IO =100mA VSET rised until VI - VO > 0.8V 1.178 1.24 1.302
V
The Switch OFF
IMAX Maximum Output Current
Limit
1.2
A
ISC Short Circuit Current Limit
1.2 ILIM
A
IO/ISET IO to ISET Current Ratio
IO =500mA VO > 1.6V
970 1110 1300
VIL ON Input Low Level Voltage VI = 2.7 to 5.5V
0.8
V
VIH ON Input High Level
Voltage
VI = 2.7 to 3.6V
VI = 4.5 to 5.5V
2.0
V
2.4
II ON Input Leakage Current VI = 5.5V
1
µA
ISET ISET Bias Current
VSET = 1.24V IO =0A
VI = VO
0.5
3
µA
VOL FAULT Output Low Voltage ISINK =1mA VSET = 1.4V
0.15
V
IOH FAULT Output High Voltage VFAULT =5.5V
VSET = 1V
1
µA
TPROT Thermal Protection
130
°C
THYST Thermal Hysteresys
15
°C
TIMINGL CHARACTERISTICS (VIN=3V, TA = TMIN to TMAX, unless otherwise specified. Typical values
are at TA = 25 °C)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
tRESP
tON
Slow Current Loop
Response Time
Fast Current Loop
Response Time
Turn ON Time
tOFF Turn OFF Time
20% Current Overdrive, VCC = 5V
VI = 5V,
VI = 3V,
VI = 5V
IO =500mA
IO =500mA
5
µs
2
µs
25
50
µs
50
1
2
10
µs
3/7
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