原装现货 RT9917GQW 欢迎询价

型号：
RT9917GQW
厂家：
RICHTEK
批号：
13+
封装：
QFN

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产品信息

General Description

The RT9917 is a complete power-supply solution for digital

still cameras and other hand-held devICes.

It integrates :

CH1 : Boost DC-DC converter with load disconnect

controller (SW1).

CH2 : Selectable Boost/Buck DC-DC converter

CH3 : Step-down DC-DC converter with internal

compensation.

CH4 : Step-down DC-DC converter with internal

compensation.

CH5 : DC/DC converter with HV NMOS, internal

compensation and load disconnect (SW5) for CCD positive

supply.

CH6 : DC/DC converter with HV PMOS for CCD negative

supply.

CH7 : WLED driver with HV NMOS, internal compensation

and allow for PWM dimming.

SW1 : Load disconnect controller for CH1.

SW5 : Load disconnect switch for CH5.

Features

z 1 Channel Boost/Buck Selectable by SEL Pin

z 2 Selectable On/Off Sequence Set by SEQ Pin

z 4 Channels with Internal Compensation

z Provide Charge Pump Voltage to Enhance NMOS

Gate Driving Capability for Alkaline Battery Input

z All Power Switches Integrated

z Syn Step-Down DC/DC Converter

` Up to 95% Efficiency

` 100% (MAX) Duty Cycle

z Syn Step-Up DC/DC Converter

` Adjustable Output Voltage

` Up to 95% Efficiency

z Open LED Protection

z Transformerless Inverting Converter for CCD

z Fixed 1MHz Switching Frequency

z Compact 40-Lead WQFN Package

z RoHS Compliant and 100% Lead (Pb)-Free

Ordering Information

Note :

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

Applications

z Digital Still Camera

z PDA

z Portable Device

公司介绍

斯普仑科技有限公司目前主要代理及经销各种品牌的产品的IC, 特别是在偏门、停产、紧缺的IC方面有着多年的经验和广阔的资源长期以来，我们本着“诚信合作”为原则，“质量保证，价格合理，货源稳定，服务周到”为宗旨，与广大客户朋友们建立了持久、稳固的的合作关系，并取得了广泛的共识与信任。展望未来，我们诚恳地希望与更多客户朋友共同开拓进取，力争上游，共创美好明天。本着诚信合作之原则，我们力求满足每一位客户的需要。欢迎广大客商来电洽谈，共谋发展！