DESCRIPTION

Si9113 is a current mode PWM controller for ISDN power supplies. In a 14-pin SOIC package, it provides all necessary functions to implement a single-switch PWM with a minimum of external parts. To maximize the circuit integration, the Si9113 is designed with a 200-V depletion mode MOSFET capable of powering directly off the high input bus without an external start-up circuit. The Start and Stop input voltage thresholds can be programmed within the operating input voltage range by means of a resistor divider, provided +VIN (Start) > +VIN (Stop).

FEATURES

BiC/DMOS Technology

Current Mode Control

Max 50 Duty Cycle Operation

1.3-MHz Error Amp

Up to 500-kHz Internal Oscillator

Soft-Start

0.6-V Fast Over-Current Protection

<5-μA Supply Current for +VIN <18 V

23.5-V to 200-V Input Voltage Range

Programmable Start/Stop Capability

Internal Start-Up Circuit

Power_Good Output

SI9113DY屬于集成電路（IC） > 特殊用途穩(wěn)壓器。威世科技半導(dǎo)體制造生產(chǎn)的SI9113DY特殊用途穩(wěn)壓器該系列產(chǎn)品用于電源控制、某種形式的轉(zhuǎn)換，適用于特定的復(fù)雜應(yīng)用。因此，各種產(chǎn)品特性集差異較大，包括空燃比傳感器接口、汽車交流發(fā)電機(jī)電壓調(diào)節(jié)、DDR 端接、液體透鏡控制、摩托車轉(zhuǎn)向信號控制、熱電 (peltier) 冷卻器控制、壓電觸覺控制、閥門控制、小型發(fā)動機(jī)管理等。