MAX869L Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown

19-1278; Rev 0; 8/97
2A, Current-Limited, High-Side
P-Channel Switch with Thermal Shutdown
_______________General Description
The MAX869L P-channel load switch features an accu-
rate user-set current limit and low on-resistance. This
switch is designed to protect your power source from
shorts and surges by limiting current and preventing
the system supply from being pulled low. The input volt-
age range is 2.7V to 5.5V.
The MAX869L features a 2A, 45mΩ switch controlled
by a logic signal. Current-limit accuracy is ±21%, and
can be set from 400mA to 2.4A using a single resistor.
The device has a low 12µA quiescent supply current,
which reduces to 2µA max in shutdown. It features ther-
mal-shutdown protection and a logic-signal output pin
(FAULT) that signals when there is an overcurrent or
overtemperature condition.
For other devices in this family, consult the Selector
Guide.
____________________________Features
o Very Small Footprint (16-pin QSOP is the same
size as an 8-pin SO)
o Low Resistance: 45mΩ at 3V
o ±21%-Accurate, User-Set Current Limit
o 12µA (typ) Quiescent Current
o 0.01µA (typ) Shutdown Current
o 0.04µA (typ) Leakage to Output when Switch
is Off
o 2.7V to 5.5V Input Range
o Thermal Shutdown
o FAULT Output
_____________________Selector Guide
PART
MAX869L
MAX890L
MAX891L
MAX892L
MAX894L
MAX895L
R_ON
AT 3V
(mΩ)
45
90
150
300
150
300
NOMINAL
CURRENT
(A)
2
1
0.5
0.25
0.5
0.25
COUNT
Single
Single
Single
Single
Dual
Dual
PACKAGE
16 QSOP
8 SO
8 µMAX
8 µMAX
8 SO
8 SO
______________Ordering Information
PART
TEMP. RANGE
MAX869LC/D
0°C to +70°C
MAX869LEEE
-40°C to +85°C
*Dice are specified at T_A = +25°C.
PIN-PACKAGE
Dice*
16 QSOP
__________Typical Operating Circuit
________________________Applications
Universal Serial Bus (USB)
Notebook Computers
Personal Communicators
Palmtop Computers
Hand-Held Instruments
Portable Medical Instruments
INPUT
2.7V TO 5.5V
1µF*
100k
IN
OUT
MAX869L
FAULT
ON
GND
SET
OUTPUT
UP TO 2A
0.1µF*
ON/OFF
R_SET
Pin Configuration appears at end of data sheet.
*FOR USB APPLICATIONS, C_IN = 1µF, C_OUT = 120µF
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