AK7903 Datasheet, PDF (4/10 Pages) Asahi Kasei Microsystems – DCDC Step-down Converter for NiH2 Battery

Pin Name
I/O
SW
O
VIN
－
RT
O
COMP
O
FB
I
SENSE
I
CONT
I
EN2
I
VDD
－
OPOUT
O
MS1190-E-00
Protection Diode
BULK
7
GND
VIN
9
GND
VIN
10
GND
BULK
11
GND
BULK
12
GND
VDD
13
GND
VDD
14
GND
VDD
16
GND
4
Function
Choke Coil Connection Pin
DCDC Power Supply Pin
Frequency Setting Pin
(Adjusted by external resistor)
[AK7903]
Boost Compensation Pin
Output Voltage Detection Pin
Connect to Current Detection SENSE Resistor
PIN1 or PIN2 Select Pin
(PIN1@CONT= “L”, PIN2 @CONT= “H”)
OP-AMP Enable Pin
OP-AMP Power Supply Pin
OP-AMP Output Pin
2010/6