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參數(shù)資料
| 型號： | FAN5307 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | High-Efficiency Step-Down DC-DC Converter |
| 中文描述： | 高效率降壓型DC - DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 633K |
| 代理商： | FAN5307 |
www.fairchildsemi.com
REV. 1.0.2 6/22/04
Features
95% Efficiency, Synchronous Operation
Adjustable Output Voltage Option from 0.7V to V
2.5V to 5.5V Input Voltage Range
Customized Fixed Output Voltage Options
Up to 300mA Output Current
Fixed Frequency 1MHz PWM Operation
High Efficiency Power Save Mode
100% Duty Cycle Low Dropout Operation
Soft Start
Dynamic Output Voltage Positioning
15
μ
A Quiescent Current
Excellent Load Transient Response
5-Lead SOT-23 Package
6-Lead MLP 3x3mm Package
IN
Applications
Pocket PCs, PDAs
Cell Phones
Battery-Powered Portable Devices
Digital Cameras
Low Power DSP Supplies
Description
The FAN5307, a high efficiency low noise synchronous
PWM current mode and Pulse Skip (Power Save) mode
DC-DC converter is designed for battery-powered applica-
tions. It provides up to 300mA of output current over a wide
input range from 2.5V to 5.5V. The output voltage can be
either internally fixed or externally adjustable over a wide
range of 0.7V to 5.5V by an external voltage divider. Custom
output voltages are also available.
At moderate and light loads pulse skipping modulation is
used. Dynamic voltage positioning is applied, and the output
voltage is shifted 0.8% above nominal value for increased
headroom during load transients. At higher loads the system
automatically switches to current mode PWM control,
operating at 1 MHz. A current mode control loop with fast
transient response ensures excellent line and load regulation.
In Power Save mode, the quiescent current is reduced to
15
μ
A in order to achieve high efficiency and to ensure long
battery life. In shut-down mode, the supply current drops
below 1
μ
A. The device is available in 5-lead SOT-23 and
6-lead MLP 3x3mm packages.
Typical Application
EFFICIENCY vs. LOAD CURRENT
V
OUT
= 1.8V
Load Current [mA]
0.01
0.1
1
10
100
1000
E
65
70
75
80
85
90
95
100
V
IN
=2.5V
V
IN
=3.6V
V
IN
=5.5V
FAN5307
High-Efficiency Step-Down DC-DC Converter
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| FAN5308 | 800mA High-Efficiency Step-Down DC-DC Converter |
| FAN5308MPX | 800mA High-Efficiency Step-Down DC-DC Converter |
| FAN53168 | 6-Bit VID Controlled 2-4 Phase DC-DC Controller |
| FAN53168MTC | 6-Bit VID Controlled 2-4 Phase DC-DC Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5307MP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5307MP15X | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:High-Efficiency Step-Down DC-DC Converter |
| FAN5307MP18X | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Ang fg Stp DwnConvTR Adj OP UltraPortabl 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(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| FAN5307MPX | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 High-effic step-down DC/DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| FAN5307S15X | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Ang fg Stp DwnConvTR Adj OP UltraPortabl 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(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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