LTC1771 Datasheet, PDF (12/16 Pages) Linear Technology – Low Quiescent Current High Efficiency Step-Down DC/DC Controller

LTC1771
TYPICAL APPLICATIO S
3.3V to 2.5V/1A Regulator with Burst Mode Operation Enabled
0.01µF
1
220pF
10k ₂
RUN/SS
I_TH
8
MODE
7
SENSE
3
LTC1771
6
V_FB
V_IN
4
GND
5
PGATE
1M
1.02M
1%
1%
5pF
1000pF
R_SENSE
0.1Ω
Si3443DV
22µH
UPS5817
V_IN
+ C_IN
3.3V
TO 12V
22µF
25V
V_OUT
2.5V
+ C_OUT ^1A
150µF
6.3V
1771 TA01
5V/2A Regulator with Burst Mode Operation Disabled
0.01µF
1
220pF
10k ₂
RUN/SS
I_TH
8
MODE
7
SENSE
3
LTC1771
6
V_FB
V_IN
4
GND
5
PGATE
1M
3.09M
1%
1%
5pF
1000pF
R_SENSE
Si6447DQ ^0.05Ω
22µH
UPS5817
V_IN
+ C_IN
5.5V
TO 18V
22µF
25V
V_OUT
5V
+
2A
C_OUT
150µF
6.3V
1771 TA04
12