- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377971 > ML4863 (Fairchild Semiconductor Corporation) High Efficiency Flyback Controller(高效回轉(zhuǎn)電源控制器) PDF資料下載
參數(shù)資料
| 型號： | ML4863 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | High Efficiency Flyback Controller(高效回轉(zhuǎn)電源控制器) |
| 中文描述： | 高效率反激式控制器（高效回轉(zhuǎn)電源控制器） |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 118K |
| 代理商： | ML4863 |
July 2000
ML4863
High Efficiency Flyback Controller
BLOCK DIAGRAM
GENERAL DESCRIPTION
The ML4863 is a flyback controller designed for use in
multi-cell battery powered systems such as PDAs and
notebook computers. The flyback topology is ideal for
systems where the battery voltage can be either above or
below the output voltage, and where multiple output
voltages are required.
The ML4863 uses the output voltage as the feedback
control signal to the current mode variable frequency
flyback controller. In addition, a synchronous rectifier
control output is supplied to provide the highest possible
conversion efficiency (greater than 85% efficiency over a
1mA to 1A load range).
The ML4863 has been designed to operate with a
minimum number of external components to optimize
space and cost.
FEATURES
I
Variable frequency current mode control and
synchronous rectification for high efficiency
I
Minimum external components
I
Guaranteed start-up and operation over a wide input
voltage range (3.15V to 15V)
I
High frequency operation (>200kHz) minimizes the
size of the magnetics
I
Flyback topology allows multiple outputs in addition to
the regulated 5V
I
Built-in overvoltage and current limit protection
SWITCHING
CONTROL
BLANKING
CROSS-CONDUCTION
PROTECTION
VFB
I
4.5V
LDO
RECTIFIER
COMPARATOR
CURRENT
COMPARATOR
Rgm
18mV
–
+
VREF
3
SHDN
5
VCC
8
GND
6
OUT 1
7
OUT 2
2
SENSE
1
VIN
VFB
VCC
4
VFB
BIAS & UVLO
+
COMP
–
–
COMP
+
18mV
VCC
VCC
A2
A1
FEATURING
Extended Co-20C to 70C
for Portable Handheld Equipment
REV. 1.0 10/12/2000
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ML4865CS-2 | High Voltage High Current Boost Regulator |
| ML4865 | High Voltage High Current Boost Regulator |
| ML4866 | 3.3V Output DC-DC Step-Down Converter(3.3V輸出的DC-DC步降變換器) |
| ML4869 | Medium Current Boost Regulator with Load Disconnect(負載可分離的中等電流升壓穩(wěn)壓器) |
| ML4870 | High Current Boost Regulator with Load Disconnect(負載可分離的大電流升壓穩(wěn)壓器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4863CS | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| ML4863CS / ES WAF UP | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| ML4863CSX | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Fairchild Semiconductor Corporation 功能描述: |
| ML4863ES | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:High Efficiency Flyback Controller |
| ML4863IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:High Efficiency Flyback Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復。