S-8460 Datasheet - Seiko Instruments

S-8460 PWM CONTROL SWITCHING REGULATOR CONTROLLER

1 VIN IC power supply pin 2 VL Power supply pin for boost *1 Shutdown pin 3 ON/OFF “H” : Normal operation (step-up and down) “L” : Halt (no step-up and down) 4 VSS GND pin *2 5 CSS Capacitor connection pin for soft-start time 6 CPRO Capacitor connection pin for setting protection time.

Rev.2.0_00 STEP-UP OR DOWN, SINGLE-COIL, PWM CONTROL SWITCHING REGULATOR CONTROLLER S-8460 The S-8460 is a PWM control CMOS step-up and step-down switching regulator controller which consists of an automatic-selection control circuit for step-up and step-down, a reference voltage circuit, an oscillation circuit, an error amplifier, a phase compensation circuit, etc. The automatic-selection control circuit for step-up and stepdown in PWM control realizes a high performance step-up and stepdown.

S-8460 Features

* Single-coil, step-up or step-down switching realizes high efficiency.

* High efficiency is realized by using only N-channel power MOS FET as an external power MOS

* Synchronous rectification at step-down operation

* Input voltage : 2.2 to 18.0 V

* Vari

S-8460 Datasheet