UTC BA9741A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
1

QW-R103-019,A

TWO-CHANNEL SWITCHING
REGULATOR CONTORLLER

DESCRIPTION
The UTC BA9741A is a two-channel switching
regulator controllers that use the PWM method.
It can be used for DC to DC conversion for step-up,
step-down, and inverting. The IC comes in a compact
package, making it ideal for use in portable equipment.

FEATURES
*High-accuracy reference voltage circuit (±1%).
*Time-latch, short-circuit protection circuit.
*Miss-operation prevention circuit for low-voltage input
*Reference voltage with output (2.5V)
*Rest period adjustment is possible over the entire duty
*range.

APPLICATION
*DC/DC converters for video cameras and notebook
computers etc.

DIP-16
SOP-16
TSSOP-16

PIN CONFIGURATIONS

CT
RT
NON1
INV1
FB1
DT1
OUT1
GND Vcc
OUT2
DT2
INV2
SCP
VREF
NON2
FB2
ERROR
AMPLIFIER 1
ERROR
AMPLIFIER 2
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16