427

Regulator ICs

Two-channel switching regulator

controller

BA9741F / BA9741FS

The BA9741F and BA9741FS are two-channel switching regulator controllers that use the PWM method. Both circuits

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.

FApplications

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

FFeatures

1) High-accuracy reference voltage circuit (

±1%).

2) Timer-latch, short-circuit protection circuit

3) Miss-operation prevention circuit for low-voltage in-

put.

4) Reference voltage with output (2.5V).

5) Rest period adjustment is possible over the entire

duty range.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_C)