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MAX869 Datasheet

  • MAX869

  • Maxim Integrated Products [2A, Current-Limited, High-Side P...

  • MAXIM   MAXIM

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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, 45m鈩?switch controlled
by a logic signal. Current-limit accuracy is 鹵21%, and
can be set from 400mA to 2.4A using a single resistor.
The device has a low 12碌A(chǔ) quiescent supply current,
which reduces to 2碌A(chǔ) 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: 45m鈩?at 3V
o
鹵21%-Accurate, User-Set Current Limit
o
12碌A(chǔ) (typ) Quiescent Current
o
0.01碌A(chǔ) (typ) Shutdown Current
o
0.04碌A(chǔ) (typ) Leakage to Output when Switch
is Off
o
2.7V to 5.5V Input Range
o
Thermal Shutdown
o
FAULT
Output
MAX869L
_____________________Selector Guide
PART
MAX869L
MAX890L
MAX891L
MAX892L
MAX894L
MAX895L
R
ON
AT 3V
(m鈩?
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 碌MAX
8 碌MAX
8 SO
8 SO
______________Ordering Information
PART
MAX869LC/D
MAX869LEEE
TEMP. RANGE
0擄C to +70擄C
-40擄C to +85擄C
PIN-PACKAGE
Dice*
16 QSOP
*Dice
are specified at T
A
= +25擄C.
__________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
1碌F
*
100k
IN
OUT
OUTPUT
UP TO 2A
0.1碌F
*
MAX869L
FAULT
GND
ON
SET
ON/OFF
R
SET
Pin Configuration appears at end of data sheet.
*
FOR USB APPLICATIONS, C
IN
= 1碌F, C
OUT
= 120碌F
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.

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