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參數資料
| 型號： | RC5051M |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Current-Mode SMPS Controller |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 141K |
| 代理商： | RC5051M |
www.fairchildsemi.com
REV. 1.0.4 4/2/01
Features
Programmable output from 1.3V to 3.5V using an
integrated 5-bit DAC
85% efficiency typical
Adjustable operation from 80KHz to 1MHz
Integrated Power Good and Enable functions
Overvoltage protection
Overcurrent protection
Drives N-channel MOSFETs
20 pin SOIC package
Meets Intel Pentium II specifications using minimum
number of external components
Applications
Power supply for Pentium
VRM for Pentium II processor
Programmable step-down power supply
II
Description
The RC5051 is a synchronous mode DC-DC controller IC
which provides an accurate, programmable output voltage
for all Pentium II CPU applications. The RC5051 uses a
5-bit D/A converter to program the output voltage from 1.3V
to 3.5V. The RC5051 uses a high level of integration to
deliver load currents in excess of 19A from a 5V source with
minimal external circuitry. Synchronous-mode operation
offers optimum efficiency over the entire specified output
voltage range, and the internal oscillator can be programmed
from 80KHz to 1MHz for additional flexibility in choosing
external components. An on-board precision low TC refer-
ence achieves tight tolerance voltage regulation without
expensive external components. The RC5051 also offers
integrated functions including Power Good, Output Enable,
over-voltage protection and current limiting.
Block Diagram
DIGITAL
CONTROL
+5V
1
16
20 19 18 17
8
2
3
9
7
12
13
4
5
–
+
1.24V
REFERENCE
5-BIT
DAC
65-5051-01
POWER
GOOD
OSC
PWRGD
VREF
VID0
VID1
VID2
VID4
VID3
ENABLE
–
+
–
+
–
+
+5V
VO
RC5051
+12V
RC5051
Programmable Synchronous DC-DC Controller for
Low Voltage Microprocessors
Pentium is a registered trademark of Intel Corporation.
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| RC5057 | High Performance Programmable Synchronous DC-DC Controller for Low Voltage Microprocessors |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| RC5051M_32 | 功能描述:開關變換器、穩壓器與控制器 DC-DC Converter Prog Sync RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| RC5051MT | 功能描述:開關變換器、穩壓器與控制器 Prog Sync DC-DC Low Voltage UPS RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| RC5051MT_32 | 功能描述:開關變換器、穩壓器與控制器 Prog Sync DC-DC Low Voltage UPS RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| RC5052 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| RC5052AH WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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