DESCRIPTION

The ST735 is a Bi-CMOS, inverting switch mode DC-DC regulator with internal Power MOSFETs that generates a fixed -5V output voltage from a 4V to 6.2V input voltage; is guaranteed an output current of 200mA for inputs greater than 4.5V. The quiescent current for this device is typically of 0.8mA and, in shutdown mode it is reduced to 10µA.

■ CONVERTS +4.0V TO + 6.2V INPUT TO -5V OUTPUT

■ 1W GUARANTEED OUTPUT POWER

■ 75 TYPICAL EFFICIENCY

■ 0.8mA QUIESCENT CURRENT

■ 10µA SHUTDOWN MODE

■ 160KHZ FIXED FREQUENCY OSCILLATOR

■ CURRENT MODE PWM CONVERTER

■ LOW NOISE AND JITTER

■ SOFT START

■ SIMPLE APPLICATION CIRCUIT

■ UNDERVOLTAGE LOCKOUT