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KA3845

Part Number	KA3845
Manufacturer	ETC
Description	CurrentMode PWM Controller
Published	Jan 5, 2020
Detailed Description	KA3842/43/44/45 Inv № 59 Current Mode PWM Controller July 1995 - revised July 2002 DESCRIPTION KA3842/43/44/45 are fi...
Datasheet	KA3845 PDF File

Overview

KA3842/43/44/45 Inv № 59 Current Mode PWM Controller July 1995 - revised July 2002 DESCRIPTION KA3842/43/44/45 are fixed frequency current mode PWM controller.
They are specially designed for OFF−Line and DC to DC converter applications with a minimal external components.
Internally implemented circuits include a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET.
Protection circuitry includes built undervoltage lockout and current limiting.
The UC3842A(AM) and UC3844A(AM) have UVLO thresholds of 16 V (on) and 10 V (...

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