ML4771 View Datasheet(PDF) - Micro Linear Corporation
Part Name
Description
MFG CO.
'ML4771' PDF : 8 Pages View PDF
ML4771
VIN
100µF
268kΩ
20µH
(Sumida CD75)
ML4771
VL1 PWR GND
VIN
NC
GND
VL2
SENSE VOUT
259kΩ
IOUT
VIN
200µF
Figure 1. Application Test Circuit.
IL
VIN
2
RSENSE
1
VL1
6
VL2
START-UP
+
–
BOOST
CONTROL
Q1
A1
SYNCHRONOUS
RECTIFIER
CONTROL
Q2
A2
A3
2.57V
ISET
VOUT
5
SENSE
4
VOUT
R1
R2
GND
3
PWR GND
8
Figure 2. PFM Regulator Block Diagram.
IL(MAX)
IL
ISET
0
VOUT
VL2
0
Q1 ON
Q2 OFF
Q1 OFF
Q2 ON
Figure 3. Inductor Current and Voltage Waveforms.
4
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