TYPICAL APPLICATIO S
LTC1772B
LTC1772B High Efficiency, Small Footprint 3.3V to 1.8V/0.5A Regulator
R4
10k
C3
220pF
1
6
ITH/RUN PGATE
LTC1772B
2
GND
3
VFB
5
VIN
SENSE– 4
R1
0.15Ω
L1
M1 10µH
+
D1
C1
10µF
10V
C2
47µF
6V
VIN
3.3V
VOUT
1.8V
0.5A
R2
100k
C1: TAIYO YUDEN CERAMIC
LMK325BJ106K-T
C2: SANYO POSCAP 6TPA47M
D1: MOTOROLA MBRM120T3
L1: COILTRONICS UP1B-100
M1: Si3443DV
R1: DALE 0.25W
R3
80.6k
1772 TA02
R4
10k
C3
220pF
LTC1772B 5V/0.5A Flyback Regulator
1
6
ITH/RUN PGATE
LTC1772B
2
GND
3
VFB
5
VIN
SENSE– 4
R1
0.033Ω
M1
D1
T1
•
+
10µH
10µH
•
C1
10µF
10V
VIN
2.5V
TO 9.8V
C2
100µF
10V
×2
VOUT
5V
0.5A
R2
52.3k
C1: TAIYO YUDEN CERAMIC
LMK325BJ106K-T
C2: AVXTPSE107M010R0100
D1: IR10BQ015
M1: Si9803
R1: DALE 0.25W
T1: COILTRONICS CTX10-4
R3
10k
1772 TA04
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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