MAX894LESA Maxim Integrated Products, MAX894LESA Datasheet - Page 6

• Manufacturer Part Number: MAX894LESA
• Description: IC SW MOSFET DUAL P-CH W/SD8SOIC
• Manufacturer: Maxim Integrated Products
• Type: High Side Switchr

Specifications of MAX894LESA

• Number Of Outputs: 2
• Rds (on): 225 mOhm
• Internal Switch(s): Yes
• Current Limit: 500mA
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1148883

Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
Figure 1. Functional Diagram
6
______________________________________________________________Pin Description
PIN
R
1
2
3
4
5
6
7
8
_______________________________________________________________________________________
SET A
SET A
ONA
IN
NAME
OUT A
OUT B
SET A
SET B
ONA
GND
ONB
IN
AMPLIFIER A
REPLICA
Switch A Output. P-channel MOSFET drain. Bypass OUT A with a 0.1µF capacitor to ground.
Switch B Output. P-channel MOSFET drain. Bypass OUT B with a 0.1µF capacitor to ground.
Set Current-Limit Input. A resistor from SET A to ground sets the current limit for switch A. See Setting the
Current Limit section.
Active-Low Switch A On Input. A logic low turns switch A on.
Ground
Set Current-Limit Input. A resistor from SET B to ground sets the current limit for switch B. See Setting the
Current Limit section.
Input, Switches A and B. P-channel MOSFET source. Bypass IN with a 1µF capacitor to ground.
Active-Low Switch B On Input. A logic low turns switch B on.
ON
CURRENT-LIMIT
AMPLIFIER A
P
P
ON
P
1.24V
MAX894L
MAX895L
CIRCUITRY
CONTROL
FUNCTION
CURRENT-LIMIT
AMPLIFIER B
P
P
AMPLIFIER B
REPLICA
ON
ON
1.24V
P
ONB
GND
OUT A
OUT B
SET B
R
SET B