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KA3845 - CurrentMode PWM Controller

Download the KA3845 datasheet PDF. This datasheet also covers the KA3842 variant, as both devices belong to the same currentmode pwm controller family and are provided as variant models within a single manufacturer datasheet.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (KA3842-ETC.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number KA3845
Manufacturer Unknown Manufacturer
File Size 554.13 KB
Description CurrentMode PWM Controller
Datasheet download datasheet KA3845 Datasheet

General 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.

Overview

KA3842/43/44/45 Inv № 59 Current Mode PWM Controller July 1995 - revised July.

Key Features

  • Low Start-Up and Operating Current.
  • High Current Totem Pole Output.
  • Undervoltage Lockout With Hysteresis.
  • Operating Frequency Up To 300KHz (384XA) 500KHz (384XAM) BLOCK.