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參數資料
| 型號： | FAN5307SX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | High-Efficiency Step-Down DC-DC Converter |
| 中文描述： | 0.7 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | ROHS COMPLIANT, MO-178AA, SOT-23, 5 PIN |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 633K |
| 代理商： | FAN5307SX |
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN5308 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:800mA High-Efficiency Step-Down DC-DC Converter |
| FAN5308_07 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:800mA High-Efficiency Step-Down DC-DC Converter |
| FAN5308MPX | 功能描述:直流/直流開關轉換器 SYSTEM_POWER RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| FAN5308MPX | 制造商:Fairchild Semiconductor Corporation 功能描述:IC DC/DC CONVERTER ((NW)) 制造商:Fairchild Semiconductor Corporation 功能描述:IC, STEP-DOWN DC/DC CONVERTER, MLP-6 |
| FAN5309M_ABB3086B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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