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19-1153; Rev 1; 2/07
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
General Description
The MAX894L/MAX895L smart, dual, low-voltage,
P-channel, MOSFET power switches are intended for
high-side load-switching applications. These switches
operate with inputs from +2.7V to +5.5V, making them
ideal for both 3V and 5V systems. Internal current-
limiting circuitry protects the input supply against
overload. Thermal-overload protection limits power dis-
sipation and junction temperature.
The MAX894L/MAX895L’s maximum current limits are
500mA and 250mA, respectively. The current limit
through the switches is programmed with resistors from
SET A/SET B to ground. When the switches are on, the
quiescent supply current is a low 16μA. When the
switches are off, the supply current decreases to 0.1μA.
The MAX894L/MAX895L are available in an 8-pin SO
____________________________Features
? +2.7V to +5.5V Input Range
? Programmable Current Limits
? Low Supply Current:
16 μ A I Q at V IN = 3.3V
0.1 μ A with Switch Off
? Thermal Shutdown
Ordering Information
package.
________________________Applications
PART*
MAX894L C/D
MAX894LESA
TEMP.
RANGE
0°C to +70°C
-40°C to +85°C
PIN-
PACKAGE
Dice**
8 SO
CURRENT
LIMIT
500mA
500mA
PCMCIA Slots
Access Bus Slots
Portable Equipment
Typical Operating Circuit
MAX895L C/D 0°C to +70°C Dice** 250mA
MAX895LESA -40°C to +85°C 8 SO 250mA
* To order these units in tape and reel, add (-T) to the end of the
part number.
** Dice are tested at T A = +25°C.
Pin Configuration
TOP VIEW
OUTPUT A
OUT A
ONB
ON/OFF
0.1 μ F
OUTPUT B
OUT B
IN
INPUT
OUT A 1
8
ONB
0.1 μ F
SET A
MAX894L
MAX895L
SET B
1 μ F
OUT B 2
SET A 3
MAX894L
MAX895L
7
6
IN
SET B
R SET A
R SET B
ONA 4
SO
5
GND
ON/OFF
ONA
GND
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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