參數(shù)資料
型號(hào): ML4770
廠商: Fairchild Semiconductor Corporation
英文描述: 2 Cell, Adjustable Output, High Current Boost Regulator with Load Disconnect(兩單元、負(fù)載可分離的可調(diào)輸出、高電流升壓穩(wěn)壓器)
中文描述: 2細(xì)胞,可調(diào)輸出,高電流升壓負(fù)載斷開(kāi)(兩單元,負(fù)載可分離的可調(diào)輸出,高電流升壓穩(wěn)壓器穩(wěn)壓器)
文件頁(yè)數(shù): 4/9頁(yè)
文件大?。?/td> 249K
代理商: ML4770
ML4770
4
REV. 1.0 10/10/2000
Q1 ON
Q2 OFF
Q1 OFF
Q2 ON
IL
VL2
IL(MAX)
ISET
VOUT
0
0
Figure 1. Application Test Circuit
Figure 3. Inductor Current and Voltage Waveforms
Figure 2. PFM Regulator Block Diagram
VL2
5
VOUT
6
+
SHUTDOWN
CONTROL
7
SHDN
VIN
2
2.57V
START-UP
3
GND
VL1
1
SYNCHRONOUS
RECTIFIER
CONTROL
BOOST
CONTROL
SHDN
+
+
8
PWR GND
A1
A2
A3
Q1
Q2
Q3
VOUT
4
SENSE
COUT
R1
R2
IL
ISET
RSENSE
ML4770
IOUT
100μF
100μF
VIN
27μH
(Sumida CD75)
VL1
VIN
GND
SENSE
PWR GND
SHDN
VL2
VOUT
268k
259k
VIN
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