Datasheet > OB2354AP

OB2354AP

更新时间： 2024-11-01 05:34:39

品牌	Logo	应用领域
佰鸿 - BRTLED		光电二极管
页数	文件大小	规格书
1页	138K
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数据手册

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OB2354AP 数据手册

OB2354

Current Mode PWM Power Switch ^{Freq Shuffling}

■

Fixed 50KHZ Switching Frequency

Internal Synchronized Slope Compensation

Low VDD Startup Current and Low Operating

Current

Leading Edge Blanking on Current Sense Input

Good Protection Coverage With Auto Self-

Recovery

VDD Over Voltage Clamp and Under Voltage

Lockout with Hysteresis (UVLO)

On-Bright Proprietary Line Input Compensated

Cycle-by-Cycle Over-current Threshold Setting

For Constant Output Power Limiting Over

Universal Input Voltage Range.

GENERAL DESCRIPTION

OB2354 combines a dedicated current mode PWM

controller with a high voltage power MOSFET. It

is optimized for high performance, low standby

power, and cost effective off-line flyback converter

applications in sub 20W range.

OB2354 offers complete protection coverage with

automatic self-recovery feature including Cycle-by-

Cycle current limiting (OCP), over load protection

(OLP), VDD over voltage clamp and under voltage

lockout (UVLO). Excellent EMI performance is

achieved with On-Bright proprietary frequency

shuffling technique together with soft switching

control at the totem pole gate drive output.

■

Overload Protection (OLP).

Over voltage Protection(OVP)

The tone energy at below 20KHZ is minimized in the

design and audio noise is eliminated during operation.

OB2354 is offered in DIP8 package.

APPLICATIONS

Offline AC/DC flyback converter for

■

Battery Charger

PDA power supplies

FEATURES

■

Power on Soft Start Reducing MOSFET Vds

Stress

Digital Cameras and Camcorder Adaptor

VCR, SVR, STB, DVD&DVCD Player SMPS

Set-Top Box Power

Auxiliary Power Supply for PC and Server

Open-frame SMPS

■

Frequency shuffling for EMI

Extended Burst Mode Control For Improved

Efficiency and Minimum Standby Power Design

Audio Noise Free Operation

■

TYPICAL APPLICATION

Output Power Table

230VAC±15%

Open Frame¹

21W

85-265VAC

Open Frame¹

16W

Product

OB2354

Notes:

1. Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sink, at 50℃ ambient.

©On-Bright Electronics

Confidential

OB_DOC_DS_5400

- 1 -

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