ltc1772b Linear Technology Corporation, ltc1772b Datasheet - Page 11

• Manufacturer Part Number: ltc1772b
• Description: Constant Frequency Current Mode Step-down Dc/dc Controller In Sot-23
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIO S
C1: TAIYO YUDEN CERAMIC
C2: AVXTPSE107M010R0100
D1: IR10BQ015
LTC1772B High Efficiency, Small Footprint 3.3V to 1.8V/0.5A Regulator
LMK325BJ106K-T
R4
10k
R4
10k
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.
C3
220pF
C3
220pF
U
C1: TAIYO YUDEN CERAMIC
C2: SANYO POSCAP 6TPA47M
D1: MOTOROLA MBRM120T3
1
2
3
1
2
3
LMK325BJ106K-T
I
GND
V
TH
I
GND
V
FB
TH
FB
/RUN
LTC1772B
LTC1772B 5V/0.5A Flyback Regulator
/RUN
LTC1772B
SENSE
PGATE
SENSE
M1: Si9803
R1: DALE 0.25W
T1: COILTRONICS CTX10-4
PGATE
V
IN
V
–
IN
–
6
5
4
6
5
4
10 H
L1: COILTRONICS UP1B-100
M1: Si3443DV
R1: DALE 0.25W
•
T1
R1
0.033
M1
R1
0.15
M1
D1
10 H
•
10 H
L1
D1
+
+
C1
10 F
10V
C2
47 F
6V
C1
10 F
10V
C2
100 F
10V
2
R2
100k
R3
80.6k
R2
52.3k
R3
10k
V
2.5V
TO 9.8V
IN
1772 TA02
V
3.3V
V
1.8V
0.5A
IN
OUT
1772 TA04
V
5V
0.5A
OUT
LTC1772B
11