RT9267 RICHTEK [Richtek Technology Corporation], RT9267 Datasheet

RT9267

Manufacturer Part Number

RT9267

Description

High Efficiency, Low Quiescent, Triple Output DC-DC Converter

Manufacturer

RICHTEK [Richtek Technology Corporation]

Datasheet

1.RT9267.pdf (9 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

RT9267CC

Manufacturer:

RICHTEK

Quantity:

3 846

Company:

BOSTOCK HK LIMITED

Part Number:

RT9267CC

Manufacturer:

RICHTEK

Quantity:

196

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High Efficiency, Low Quiescent, Triple Output DC-DC Converter

General Description

The RT9267 is a triple output DC-DC converter IC

including two adaptive PWM controllers, one low dropout

regulator, and one voltage detector. RT9267 is capable

of delivering hundreds of mA output current and consumes

only 40μA quiescent current for the whole IC.

The adaptive PWM controllers are configured for boost

applications with built-in 2A NMOS for each channel. The

proprietary adaptive PWM loop provides PWM operation

for heavier output loading conditions and PFM for lighter

loading, with seamless auto-transition. The 550kHz

switching rate reduces the size of external passive

components.

The low dropout linear regulator (LDO) is designed with a

built-in 300mA PMOS, providing 1mV/mA low dropout

voltage with respect to variant output current values.

The voltage detector provides the supervisory function

with open collector pull-low output. All the 4 function units

are adjustable, and each can be set with two resistors in

divider connection. The reference voltage for each

channel is set to 1.25V for the two adaptive PWM

controllers, and 0.86V for the LDO and the voltage

detector.

The RT9267 is in TSSOP 16 pin package which fits space-

limited hand held devices well.

Ordering Information

Note :

RichTek Pb-free and Green products are :

DS9267-08 March 2007

RT9267

RoHS compliant and compatible with the current require-

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

100%matte tin (Sn) plating.

ments of IPC/JEDEC J-STD-020.

Package Type

C : TSSOP-16

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Preliminary

Features

Applications

Pin Configurations

Two Channels of Adaptive PWM Controllers

One Channel of Low Dropout Regulator

One Voltage Detector

Low Start-Up Voltage 1.0V

Low Quiescent Current 40μ μ μ μ μ A for the Whole IC

High Switching Rate 550kHz

Built-In 2A Switching NMOS

Two Separated Chip Enable Control Pins

2% Accuracy for All Channels

Minimized External Components

Small TSSOP-16 Package

RoHS Compliant and 100% Lead (Pb)-Free

PDA

Portable Instrument

Wireless Equipment

DSC

LCD Back Bias Circuit

RF-Tags

GND

EN1

EN2

LX1

LX2

(TOP VIEW)

TSSOP-16

RT9267

VDD

FB1

LFB

LDOO

FB2

LBI

LBO

www.richtek.com

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