RT9221CS datasheet(1/8 Pages) ETC

部件名	RT9221CS

功能描述	PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V / 2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER

PDF	8 Pages

Scroll/Zoom	100%

制造商	ETC [List of Unclassifed Manufacturers]

网页

标志

1 / 8 page

RT9221

DS9222-05 May 2001

www.richtek-ic.com.tw

1

Programmable Synchronous PWM Buck Converter with

1.5V/2.5V Dual Low Dropout Linear Regulator Controller

General Description

The RT9221 integrates a PWM controller and two

low-dropout linear regulators into a single chip. The

PWM controller provides the CPU core voltage

controlled by a 5-bit DAC and the linear section

regulates power for GTL bus, clock driver or other

circuits on motherboards. The PWM controller

provides an adjustable Intel-compatible 1.3V~3.5V

output voltage. The synchronous N-MOSFET driver

with 200 KHz switching frequency optimizes the

efficiency, device size, and cost built-in over–voltage

and current-limiting protection prevent the CPU from

damage. Power-good signal is sent when the core

voltage is within ±10% of the setting point.

The linear section is a low dropout regulator which

drives low cost NPN transistors to supply the 1.5V

and 2.5V regulated output power.

Ordering Information

RT9221

Features

Provides 3 Regulated Voltages

N-MOSFET

Driver

for

High

Efficiency

Switching Section

Power-good,

Over-voltage,

and

Current-

limiting Protection for Switching Section

1.5V and 2.5V Fixed Output Voltage for Linear

Section

Linear Section Uses Low Cost NPN Transistor

as Power Device

TTL-compatible

5-bit

DAC

Core

Output

Voltage

Applications

Power Supply for Pentium, Pentium Pro

TM,

Pentium II

TM, Power PCTM, K6TM, 6×86TM, and

Alpha

TM Microprocessors

High-power 5V to 3.xV DC-DC Regulators

Low-voltage Distributed Power Supplies

Programmable Power Supplies

Pin Configurations

Part Number

Pin Configurations

RT9221CS

(Plastic SOP-24)

TOP VIEW

Operating temperature range

C: Commercial standard

Package type

S : SOP-24

1

2

3

4

5

6

7

8

9

10

GATE1

LDOS1

LDOS2

VCC

OVP

PGOOD

CSN

CSP

PGNDH

GATE2

LDOV

VID0

VID1

VID2

VID3

VID4

VSEN

SHDN

BSTH

GND

PGNDL

DH

BSTL

DL

11

12

13

14

15

16

17

18

19

20

21

22

23

24

类似零件编号 - RT9221CS

制造商	部件名	数据表	功能描述
STMicroelectronics	RT922	482Kb / 15P	RobuST, rail-to-rail, high output current dual operational amplifier 08-Oct-2014
List of Unclassifed Man...	RT9222	221Kb / 8P	PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH DUAL ADJUSTABLE LOW DROPOUT LINEAR REGULATOR CONROLLER
	RT9223	139Kb / 8P	5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER
	RT9223CS	139Kb / 8P	5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER
	RT9224	210Kb / 8P	5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor

More results

类似说明 - RT9221CS

制造商	部件名	数据表	功能描述
Semtech Corporation	SC1109	223Kb / 17P	SYNCHRONOUS PWM CONTROLLER WITH DUAL LOW DROPOUT REGULATOR CONTROLLERS
	SC1162	125Kb / 12P	PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER WITH LOW DROPOUT REGULATOR CONTROLLER
	SC1164	130Kb / 12P	PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER
	SC1166	333Kb / 12P	PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER?
	SC1182	130Kb / 12P	PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER
	SC1185	122Kb / 12P	PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER
	SC1186	109Kb / 12P	PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER
Richtek Technology Corp...	RT9232	217Kb / 8P	PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V/2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER AND REFERENCE OUTPUT
List of Unclassifed Man...	RT9222	221Kb / 8P	PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH DUAL ADJUSTABLE LOW DROPOUT LINEAR REGULATOR CONROLLER
Semtech Corporation	SC1109	368Kb / 19P	Synchronous PWM Controller with Dual Low Dropout Regulator Controllers