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參數資料
| 型號： | FAN5231 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower 5V, 100mA Low Dropout Linear Regulator |
| 中文描述： | 1 A SWITCHING REGULATOR, 345 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | QSOP-28 |
| 文件頁數： | 1/17頁 |
| 文件大?。?/td> | 360K |
| 代理商： | FAN5231 |
www.fairchildsemi.com
REV. 1.1.1 8/15/01
Features
Provides 3 Regulated Voltages
– Microprocessor core (SpeedStep-enabled)
– Microprocessor I/O
– Microprocessor Clock Generator
High Efficiency Over Wide Load Range
Not Dissipative Current-Sense Scheme
– Uses MOSFET’s R
– Optional Current-Sense Resistor for Precision
Overcurrent
Adaptive Dead Time Drivers for N-Channel MOSFETs
Operates from +5V, +3.3V and Battery (5.6-24V) Inputs
Precision Core Voltage Control:
– Remote “Kelvin” Sensing
– Summing Current-Mode Control
– On-Chip Mode-Compensated “Droop” for Optimum
Transient Response and Lower Processor Power
Dissipation
DS(ON)
TTL-Compatible 5-Bit Digital Output Voltage Selection
– Wide Range - 0.925VDC to 1.3VDC in 25mV Steps,
and from 1.3VDC to 2.0VDC in 50mV Steps
– Programmable “On-the-Fly” VID code change with
customer programmable slew rate and 100ms settling
time
Power-Good Output Voltage Monitor
No negative Core and I/O voltage on turn-off
Over-Voltage, Under-Voltage and Over-Current Fault
Monitors
300kHz Fixed Switching Frequency
Thermal Shut-Down
Applications
Converters for Mobile Dual-Mode CPUs
Web Tablets
Internet Appliances
FAN5231
Precision Dual PWM Controller And Linear
Regulator for Notebook CPUs
Figure 1. Simplified Power System Diagram
+V
IN
V
OUT1
V
OUT2
I/O
V
OUT3
CPU CLK
FAN5231
CORE
PWM2
LI NEAR
REGULATOR
CONTROLLER
PWM1
CONTROLLER
+V
3.3V
VID CODE
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN5231 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5231QSC | 功能描述:開關變換器、穩(wěn)壓器與控制器 QSOP-28 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 |
| FAN5231QSCX | 功能描述:開關變換器、穩(wěn)壓器與控制器 QSOP-28 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 |
| FAN5232 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Adjustable PWM Buck Controller for LCD PCs |
| FAN5232_CBC3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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