Offline Controllers | MC34023

高速シングルエンド PWM コントローラ

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CAD Model

Overview

MC34023 シリーズは高速、固定周波数のシングルエンド・パルス幅モジュレータ・コントローラであり、高周波動作向けに最適化されています。オフライン/DC-DC コンバータ・アプリケーションに特化して設計され、設計者は費用効率が高いソリューションで外付け部品を最小限にすることができます。発振器、温度補償リファレンス、広帯域幅エラー・アンプ、高速電流センシング・コンパレータ、高電流トーテムポール出力の機能があり、パワー MOSFET の駆動に最適です。入力/リファレンス低電圧ロックアウト (それぞれにヒステリシス、サイクル単位での電流制限、シングル・パルス・メータリング用ラッチを搭載) から成る保護機能もあります。電流モードと電圧モードのいずれの制御も簡単に設定できる柔軟性があります。

  • 50 ns Propagation Delay to Output
  • High Current Totem Pole Output
  • Wide Bandwidth Error Amplifier
  • Fully-Latched Logic with Double Pulse Suppression
  • Latching PWM for Cycle-By-Cycle Current Limiting
  • Soft-Start Control with Latched Overcurrent Reset
  • Input Undervoltage Lockout with Hysteresis
  • Low Start-Up Current (500 µA Typ)
  • Internally Trimmed Reference with Undervoltage Lockout
  • 90% Maximum Duty Cycle (Externally Adjustable)
  • Precision Trimmed Oscillator
  • Voltage or Current Mode Operation to 1.0 MHz
  • Functionally Similar to the UC3823
  • Pb-Free Packages are Available

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CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Topology

Control Mode

fsw Typ (kHz)

Stand-by Mode

UVLO (V)

Short Circuit Protection

Latch

Soft Start

VCC Max (V)

Drive Cap. (mA)

Reference Price

MC34023PG

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Obsolete

CAD Model

Pb

A

H

P

PDIP-16

648-08

NA

0

TUBE

25

N

-

Voltage or Current

Adj.

No

Yes

Yes

No

-

30

200

Price N/A

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