PWM控制器,电流模式,用于正向和反激应用

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概览

NCP1252控制器提供了构建具性价比且可靠的AC-DC开关电源所需要的一切,专用于ATX电源或其他任何正向应用。由于使用内部固定的计时器,NCP1252能够在不依赖辅助Vcc的情况下检测出输出过载。欠压输入针对低输入电压提供保护,提高了转换器的安全性。最后,SOIC-8封装节省有助于节省PCB空间,是成本敏感项目的优选方案。

  • 个人计算机Silver box电源
  • AC-DC适配转换器
  • 游戏机适配器
  • 反激式和正向式应用
  • 台式计算机
  • 峰值电流模式控制
  • 可调开关频率
  • 带锁存的初级侧过流保护功能,10ms固定延迟
  • 可调软启动计时器
  • 自动恢复欠压检测
  • Vcc范围扩展至高达28V,带自动恢复UVLO
  • 内部160ns前沿消隐
  • 频率抖动
  • 可调内部斜坡补偿
  • +500mA/-800mA拉/灌电流驱动能力
  • 轻负载/无负载下跳过周期运行
  • SOIC-8封装

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状况

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

NCP1252ADR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Forward

Current Mode

Up to 500

Yes

9 to 10

Yes

Yes

Yes

28

500 / 800

$0.2858

More Details

NCP1252APG

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Forward

Current Mode

Up to 500

Yes

9 to 10

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1252BDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Forward

Current Mode

Up to 500

Yes

9 to 10

Yes

Yes

Yes

28

500 / 800

$0.3141

More Details

NCP1252CDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Forward

Current Mode

Up to 500

Yes

9 to 10

Yes

Yes

Yes

28

500 / 800

$0.2858

More Details

NCP1252DDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Forward

Current Mode

Up to 500

Yes

9 to 10

Yes

Yes

Yes

28

500 / 800

$0.3352

More Details

NCP1252EDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Forward

Current Mode

Up to 500

Yes

9 to 10

Yes

Yes

Yes

28

500 / 800

$0.276

More Details

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