Datasheet > RT9911PQV

RT9911PQV

更新时间： 2024-09-20 04:07:19

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
32页	609K
描述
6 Channel DC/DC Converters

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RT9911PQV 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

RT9911

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.

Package Type

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

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Note :

z 40-Lead VQFN Package

Richtek Pb-free and Green products are :

`RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

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

Pin Configurations

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

`100% matte tin (Sn) plating.

(TOP VIEW)

Applications

40 39 38 37 36 35 34 33 32 31

z Digital Still Camera

LX2

GND

OK2

PGND2

z PDA

²⁸FB3

z ProtableDevice

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

DS9911-04 August 2007

www.richtek.com

12 3 4 5 6 7...32

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