Datasheet

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SLUS384B – NOVEMBER 1999 – REVISED JUNE 2000
3
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electrical characteristics at T
A
= 0°C to 70°C, VIN = 5 V, R
IMAX
= 42.2 kΩ, R
IFAULT
= 52.3 kΩ,
SHTDWN
= 2.4 V, T
A
= T
J
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Supply Section
Voltage input range, VIN 3 5 6 V
VDD supply current No load 1 2 mA
Sleep mode current SHTDWN = 0.2 V 0.5 5 µA
Output Section
I
OUT
= 1 A to 4 A, VIN = 5 V, T
A
= 25°C 0.075 0.095 Ω
R
I
OUT
= 1 A to 4 A, VIN = 3 V, T
A
= 25°C 0.09 0.116 Ω
R
DS(on)
I
OUT
= 1 A to 4 A, VIN = 5 V 0.075 0.125 Ω
I
OUT
= 1A to 4A, VIN = 3 V 0.09 0.154 Ω
Reverse leakage current SHTDWN = 0 V, VIN = 0 V V
OUT
= 5 V 20 µA
Initial startup time See Note 1 100 µs
Thermal shutdown VIN = 5 V, See Note 1 170 _C
Thermal hysteresis See Note 1 10 _C
Output leakage SHTDWN = 0.2 V, V
OUT
= 0 V 20 µA
R
IFAULT
= 105 kΩ 0.75 1 1.25 A
Trip current
R
IFAULT
= 52.3 kΩ 1.7 2 2.3 A
Trip current
R
IFAULT
= 34.8 kΩ 2.5 3 3.5 A
R
IFAULT
= 25.5 kΩ 3.3 4 4.7 A
R
IMAX
= 118 kΩ 0.3 1 1.7 A
R
IMAX
= 60.4 kΩ 1 2 3 A
Maximum output current
R
IMAX
= 42.2 kΩ 2 3 4 A
Maximum
out ut
current
R
IMAX
= 33.2 kΩ 2.5 3.8 5.1 A
R
IMAX
= 27.4 kΩ 3.0 4.6 6.2 A
Fault Section
C
T
charge current V
CT
= 1 V –50 –36 –22 µA
C
T
discharge current V
CT
= 1 V 0.5 1.2 2.0 µA
Output duty cycle VOUT = 0 V 1.5 3 6 %
C
T
fault threshold 0.8 1.3 1.8 V
C
T
reset threshold 0.25 0.5 0.75 V
Shutdown Section
Shutdown threshold 1.1 1.5 2.0 V
Shutdown hysteresis 100 mV
Input low current SHTDWN = 0V –500 0 500 nA
Input high current SHTDWN = 2V –2 –1 –0.5 µA
Open Drain Fault Output Section
High level output current 1 µA
Low level output voltage I
OUT
= 1mA 0.4 0.9 V
NOTE 1: Ensured by design. Not production tested.