Datasheet > OB5269CP

OB5269CP

更新时间： 2024-10-31 02:52:27

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
11页	377K
描述
High Voltage Green Mode PWM Controller

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OB5269CP 数据手册

OB5269

High Voltage Green Mode PWM Controller

GENERAL DESCRIPTION

FEATURES

OB5269 is a highly integrated current mode PWM

control IC with high voltage start up, optimized for

■

High Voltage Startup

Power on Soft Start Reducing MOSFET Vds

Stress

high

performance,

low

standby

power

consumption and cost effective offline flyback

converter applications.

■

Frequency shuffling for EMI

Extended Burst Mode Control For Improved

Efficiency and Minimum Standby Power

Audio Noise Free Operation

Fixed 65KHZ Switching Frequency

Comprehensive Protection Coverage

PWM switching frequency at normal operation is

internally fixed and is trimmed to a tight range. At

no load or light load condition, the IC operates in

extended ‘burst mode’ to minimize switching loss.

Very low standby power consumption and very

high conversion efficiency is thus achieved.

High voltage startup is implemented in OB5269,

which features with short startup time and low

standby current.

OB5269 offers complete protection coverage with

auto-recovery including Cycle-by-Cycle current

limiting (OCP), over load protection (OLP), and

VDD under voltage lockout (UVLO). It also

provides the protections with latched shut down

including over temperature protection (OTP), and

over voltage (fixed or adjustable) protection (OVP).

Excellent EMI performance is achieved with On-

Bright proprietary frequency shuffling technique.

The tone energy at below 22KHZ is minimized to

avoid audio noise during operation.

■

VDD Under Voltage Lockout with

Hysteresis (UVLO)

Cycle-by-cycle over current protection

(OCP)

Overload Protection (OLP) with auto-

recovery

Over Temperature Protection (OTP) with

latch shut down

VDD Over voltage Protection(OVP) with

latch shut down

Adjustable OVP through external Zener

APPLICATIONS

Offline AC/DC flyback converter for

■

Battery Charger

Power Adaptor

Open-frame SMPS

OB5269 is offered in SOP8 package.

TYPICAL APPLICATION

©On-Bright Electronics

Confidential

Preliminary Datasheet

OB_DOC_DS_526902

- 1 -

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