Datasheet > RT9911_11

RT9911_11

更新时间： 2024-09-20 11:59:23

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
32页	612K
描述
6 Channel DC/DC Converters

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中文翻译

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数据手册

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RT9911_11 数据手册

RT9911

6 Channel DC/DC Converters

General Description

Features

^z1.6V to 5.5V Battery Input Voltage Range

^zSynchronous Boost/Buck Selectable DC/DC

Converter

The RT9911 is a complete power-supply solution for digital

still cameras and other hand-held devices. It integrates

one selectable Boost/Buck DC/DC converter, one high

efficiency step-downDC/DC converter, one high efficiency

main step-up converter, one PWM converter for CCD

positive voltage, one inverter for CCDnegative voltage and

one white LED driver for LCD backlight. The RT9911 is

targeted for applications that use either two or three primary

cells or a single lithium-ion battery.

` Internal Switches

` Up to 95% Efficiency

^zSyn-Buck DC/DC Converters

` 0.8V to 5.5V Adjustable Output Voltage

` Up to 95% Efficiency

` 100%_(MAX)Duty Cycle

` Internal Switches

RT9911isavailableinVQFN-40L6x6. EachDC-DC converter

has independent shutdown input.

^zMain Boost DC/DC Converter

` Adjustable Output Voltage

` Up to 97% Efficiency

Ordering Information

z PWM Converter for CCD Positive Voltage

z Inverter for CCD Negative Voltage

z White LED Driver for LCD Panel Backlight

z Up to 1.4MHz Adjustable Switching Frequency

z 1μA Supply Current in Shutdown Mode

z External Compensation Network for all Converters

z Independent Enable Pin to Shutdown Each

Channel.

RT9911

Package Type

QV : VQFN-40L 6x6 (V-Type)

Lead Plating System

P : Pb Free

G : Green (Halogen Free and Pb Free)

Note :

Richtek products are :

z 40-Lead VQFN Package

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

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

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

Pin Configurations

(TOP VIEW)

Applications

z Digital Still Camera

z PDA

40 39 38 37 36 35 34 33 32 31

z ProtableDevice

LX2

GND

OK2

PGND2

²⁸FB3

COMP3

VREF

VDDM

GND

²⁶CS3

GND

DRN3

²⁴DRP3

23 VFB6

²²CFB6

²¹COMP6

FB1

COMP1

PGND1

LX1

11 12 13 14 15 16 17 18 19 20

VQFN-40L 6x6

DS9911-05 April 2011

www.richtek.com

12 3 4 5 6 7...32

中文翻译

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