- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377971 > ML4865CS-2 (FAIRCHILD SEMICONDUCTOR CORP) High Voltage High Current Boost Regulator PDF資料下載
參數(shù)資料
| 型號(hào)： | ML4865CS-2 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | High Voltage High Current Boost Regulator |
| 中文描述： | 2 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 126K |
| 代理商： | ML4865CS-2 |
www.fairchildsemi.com
REV. 1.0.2 8/10/01
Features
Guaranteed full load start-up and operation at 1.8V input
Continuous conduction mode for high output current
Very low quiescent current
Pulse frequency modulation and internal synchronous
rectification for high efficiency
Maximum switching frequency > 200kHz
Minimum external components
Low ON resistance internal switching FETs
Fixed 12V output can be adjusted to lower output voltages
General Description
The ML4865 is a high voltage, continuous conduction boost
regulator designed for DC to DC conversion in multiple cell
battery powered systems. Continuous conduction allows the
regulator to maximize output current for a given inductor.
The maximum switching frequency can exceed 200kHz,
allowing the use of small, low cost inductors. The ML4865 is
capable of start-up with input voltages as low as 1.8V and
generates a 12V output with output voltage accuracy of ±4%.
Unlike most boost regulators, the ML4865 isolates the load
from the battery when the SHDN pin is high. An integrated
synchronous rectifier eliminates the need for an external
Schottky diode and provides a lower forward voltage drop,
resulting in higher conversion efficiency. In addition, low
quiescent battery current and variable frequency operation
result in high efficiency even at light loads. The ML4865
requires only one inductor and two capacitors to build a very
small regulator circuit capable of achieving conversion effi-
ciencies approaching 90%.
Block Diagram
VL2
8
VOUT
1
SENSE
6
+
–
SHUTDOWN
CONTROL
7
SHDN
VIN
3
2.42V
START-UP
2
GND
VL1
4
SYNCHRONOUS
RECTIFIER
CONTROL
BOOST
CONTROL
SHDN
+
–
+
–
5
PWR GND
FEEDBACK
CONTROL
ML4865
High Voltage High Current Boost Regulator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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(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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4865CS2X | 功能描述:DC/DC 開(kāi)關(guān)控制器 SOIC-8 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| ML4865ES-2 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:High Voltage High Current Boost Regulator |
| ML4866 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:3.3V Output DC-DC Step-Down Converter |
| 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。