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參數(shù)資料
| 型號： | RT9221 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V / 2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER |
| 中文描述： | 可編程同步PWM降壓轉(zhuǎn)換器枚1.5V / 2.5V雙差線性穩(wěn)壓器控制器的低 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 158K |
| 代理商： | RT9221 |
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
z
Provides 3 Regulated Voltages
Driver
Switching Section
z
N-MOSFET
for
High
Efficiency
z
Power-good,
limiting Protection for Switching Section
Over-voltage,
and
Current-
z
1.5V and 2.5V Fixed Output Voltage for Linear
Section
z
Linear Section Uses Low Cost NPN Transistor
as Power Device
5-bit
Voltage
z
TTL-compatible
DAC
Core
Output
Applications
z
Power Supply for Pentium, Pentium Pro
TM
,
Pentium II
TM
, Power PC
TM
, K6
TM
, 6
×
86
TM
, and
Alpha
TM
Microprocessors
z
High-power 5V to 3.xV DC-DC Regulators
z
Low-voltage Distributed Power Supplies
z
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
BSTL
DL
GND
PGNDL
DH
11
12
13
14
15
16
17
18
19
20
21
22
23
24
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RT9221CS | PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V / 2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER |
| RT9223CS | 5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER |
| RT9223 | 5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER |
| RT9224E | VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor |
| RT9224EC | VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RT9221CS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V / 2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER |
| RT9222 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH DUAL ADJUSTABLE LOW DROPOUT LINEAR REGULATOR CONROLLER |
| RT9223 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER |
| RT9223CS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER |
| RT9224 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor |
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