Offline Controllers | MC34025

高速ダブルエンド PWM コントローラ

製品

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CAD Model

CAD Model

Overview

MC34025シリーズは高速、固定周波数のダブルエンド・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、ステアリング・フリップフロップ、デュアル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 Outputs
  • Dual High Current Totem Pole Outputs
  • 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 mA Typ)
  • Internally Trimmed Reference with Undervoltage Lockout
  • 45% Maximum Duty Cycle (Externally Adjustable)
  • Precision Trimmed Oscillator
  • Voltage or Current Mode Operation to 1.0 MHz
  • Functionally Similar to the UC3825 Simplified
  • Pb-Free Packages are Available

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Orderable Parts:

3

製品

状態

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

MC34025DWG

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16W

751G-03

3

260

TUBE

47

N

Push-Pull

Current/Voltage Mode

1000

No

Yes

Yes

No

-

30

200 / 200

Price N/A

More Details

MC34025DWR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16W

751G-03

3

260

REEL

1000

N

Push-Pull

Current/Voltage Mode

1000

No

Yes

Yes

No

-

30

200 / 200

Price N/A

More Details

MC34025PG

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Obsolete

CAD Model

Pb

A

H

P

PDIP-16

648-08

NA

0

TUBE

25

N

Push-Pull

Current/Voltage Mode

1000

No

Yes

Yes

No

-

30

200 / 200

Price N/A

More Details

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