AIC3842 Current-Mode PWM Controller

Analog Intergrations Corporation

Description

PRELIMINARY AIC3842 Current-Mode PWM Controller n .
The AIC3842 control IC provides the features that are necessary to implement off-line or DC/DC Converter fixed-frequency current-mode schemes with a m.

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Datasheet Specifications

Part number: AIC3842
Manufacturer: Analog Intergrations Corporation
File Size: 114.35 KB
Datasheet: AIC3842_AnalogIntergrationsCorporation.pdf
Description: Current-Mode PWM Controller

Features

* l Low Start-Up Current (300 µA Typical) l Internal Precision Reference. l 500KHz Current-Mode Operation. l Pulse-by-Pulse Current Limiting. l Automatic Feed-Forward Compensation. l Optimized for Off-Line and DC/DC Converters. l Undervoltage Lockout with Hysteresis. l Double Pulse Suppression. l High

Applications

* l Off-Line Converter. l DC/DC Converter. n TYPICAL APPLICATION CIRCUIT 2 C2 R3 51K FEEDBACK SIGNAL 300pF C3 1000P 6 OUTPUT GND 5 VFB VCC 7 + C1 47µF VCC INDUCTOR M1 R2 20K R5 C6 300P 390 C7 1nF RS 0.33 1 8 COMP VREF R1 10 R4 7.5K C5 0.1µF 4 RT/CT ISENSE 3 AIC3842 C4 2.2nF Current Mode PWM

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AIC3842 Current-Mode PWM Controller Analog Intergrations Corporation

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