MAX894L Maxim, MAX894L Datasheet - Page 6

• Manufacturer Part Number: MAX894L
• Description: The MAX894L/MAX895L smart, dual, low-voltage, P-channel, MOSFET power switches are intended for high-side load-switching applications
• Manufacturer: Maxim

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