- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377971 > ML4866 (Fairchild Semiconductor Corporation) 3.3V Output DC-DC Step-Down Converter(3.3V輸出的DC-DC步降變換器) PDF資料下載
參數(shù)資料
| 型號： | ML4866 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 3.3V Output DC-DC Step-Down Converter(3.3V輸出的DC-DC步降變換器) |
| 中文描述： | 3.3V輸出的DC - DC降壓轉(zhuǎn)換器（3.3V的輸出的的DC - DC步降變換器） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 128K |
| 代理商： | ML4866 |
July 2000
ML4866
*
3.3V Output DC–DC Step-Down Converter
GENERAL DESCRIPTION
The ML4866 is a high efficiency pulse width modulated
(PWM) buck regulator designed for use in 5V systems or
portable equipment that need a compact, efficienct 3.3V
supply. It has a switching frequency of 120kHz and uses
synchronous rectification to optimize power conversion
efficiency. Unlike other solutions, the ML4866 requires no
external diodes or FETs.
The ML4866 can provide up to 500mA of output current,
and operates over an input voltage range of 3.5V to 6.5V
(3 to 4 cells or a 5 VDC supply). A complete switched
mode power converter can be quickly and easily
implemented with few external components. Thanks to a
built-in autoburst mode, power conversion efficiency of
this DC–DC converter can exceed 90% over more than 2
decades of output load current.
Stability and fast loop response are provided by current
programming and a current sense circuit. The ML4866
also has a
SHDN
pin for use in systems which have power
management control. Undervoltage lockout and soft start
are also built in.
BLOCK DIAGRAM
FEATURES
I
High power conversion efficiency over 2 decades of
load current
I
No external FETs or diodes; minimum external
components
I
3.5V to 6.5V input voltage range
I
Significantly extends battery life over linear regulator
based solutions
I
Micropower operation
I
Low shutdown mode quiescent current
VREF
VIN
5
SHDN
6
VREF
3
BURST
4
COMP
2
GND
8
VOUT
1
VL
7
–
+
REFERENCE
UVLO/
SHUTDOWN
CURRENT
SENSE
–
+
ERROR
AMPLIFIER
BUCK
CONTROL
OSC
SLOPE
COMPENSATION
BURST
(* Indicates Part is End Of Life as of July 1, 2000)
REV. 1.0 10/12/2000
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ML4869 | Medium Current Boost Regulator with Load Disconnect(負(fù)載可分離的中等電流升壓穩(wěn)壓器) |
| ML4870 | High Current Boost Regulator with Load Disconnect(負(fù)載可分離的大電流升壓穩(wěn)壓器) |
| ML4872 | High Current Boost Regulator with Shutdown(帶關(guān)斷電路的大電流升壓穩(wěn)壓器) |
| ML4875 | High Current Boost Regulator with Shutdown(帶關(guān)斷電路的大電流升壓穩(wěn)壓器) |
| ML4876 | LCD Backlight Lamp Driver(LCD背光燈驅(qū)動器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4866CS | 制造商:MICRO_LINEAR 功能描述: |
| ML4866ES | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:3.3V Output DC-DC Step-Down Converter |
| ML4866IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:3.3V Output DC-DC Step-Down Converter |
| ML4869 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Medium Current Boost Regulator with Load Disconnect |
| ML4869CS-3 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Medium Current Boost Regulator with Load Disconnect |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。