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Микросхема CR6842S SOP-8 5 шт. - Объявления на сайт

Микросхема CR6842S SOP-8 5 шт.

ПРОДАЖАВ избранное
Цена: 72,99 руб
Контакт AliExpress
Добавлено 2019-08-14 20:39:17
Создано

Описание

Купить Микросхема CR6842S SOP-8 5 шт.

Green-Power PWM Controller with Freq. Jittering

Features

Low Cost, Green-Power Burst-Mode PWM

Very Low Start-up Current ( about 7.5μA)

Low Operating Current ( about 3.0mA)

Current Mode Operation

Under Voltage Lockout (UVLO)

VDD Over Voltage Protection(OVP)

programmable over-temperature protection

Internal Latch Circuit(OTP,OVP)

Built-in soft start with 1ms

Built-in Frequency jitter for better EMI Signature

Soft Clamped gate output voltage 16.5V

VDD over voltage protect 25.5V

Cycle-by-cycle current limiting

Sense Fault Protection

Output SCP (Short circuit Protection)

Built-in Synchronized Slope Compensation

Leading-edge blanking on Sense input

Programmable PWM Frequency

High-Voltage CMOS Process with ESD

DIP-8 & SOP-8 Pb-Free Package

Compatible with SG6842J&LD7552&OB2269

Applications

Power Adaptor

Battery Charger Adapter

Open Frame Switching Power Supply

LCD Monitor

General Description

The CR6842 is a low startup current , low cost, current

mode PWM controller with Green-Power & burst-mode

power-saving operation. The integrated functions such as

the leading-edge blanking of the current sensing, internal

slope compensation provide the users a high efficiency,

low external component counts, and low cost solution for

AC/DC power applications. The special Green-Power

function provides off-time modulation to linearly decrease

the switching frequency under light-load conditions. And

under zero-load conditions, the power supply enters

burst-mode to further reduce power consumption by

shutting off PWM output. When the output of power

supply is short or over loaded, the FB voltage will

increase ,and if the FB voltage is higher than 5.2V for

longer than 56msec the PWM output will be turned off. A

external NTC resistor connected from pin RT to ground

can be applied to over-temperature protection. Pulse by

pulse current limit ensures a constant output current even

under short circuit. PWM output will be disabled as long

as VDD exceeds a threshold. When internal latch circuit is

used to latch-off the controller, the latch will be reset when

the power supply VDD is disabled.

Особенности

Datasheet Click Download

Детали объявления

ID объявления: 870
Показов: 182
Истекает: 2020-10-13 20:39:00

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