LTC1771I Linear Technology, LTC1771I Datasheet - Page 4

• Manufacturer Part Number: LTC1771I
• Description: Low Quiescent Current High Efficiency Step-Down DC/DC Controller
• Manufacturer: Linear Technology

FUNCTIONAL BLOCK DIAGRA
LTC1771
4
V
C
*
U
OUT
SS
CURRENT LIMITING
OPTIONAL FOR FOLDBACK
R
C
C
*
C
RUN/SS
MODE
GND
I
TH
1
8
2
4
1.23V
(BURST ENABLE)
U
1V
+
–
1V
EA
ON
V
IN
10% CURRENT
1 A
–
+
B
MODE
2V
SOFT-START
ON TRIGGER
STRETCH
1-SHOT
W
READY
SLEEP
3.5 s
READY
REFERENCE
1.23V
V
IN
10% CURRENT
ON
BLANKING
V
3
C
FB
–
+
22k
250k
SENSE
V
SW
6
7
5
IN
+
L
R
SENSE
C
OUT
+
C
IN
1771 BD
V
V
IN
OUT