Datasheet

5
LTC1503-1.8/LTC1503-2
C1
+
V
IN
C1
–
C2
+
C2
–
150mV
800k
680k
330k
990k
1.2M
1.2V
V
REF
C
OUT
C
IN
V
OUT
GND
1503-1.8/2 BD
SHDN/SS
–
+
–
+
–
+
+
350mV
+
+
10mVCOMP2
MODE SKIP
REG ENABLE
SOFT-START
LTC1503-2
SHORT CIRCUIT
V
OUT
–
+
COMP1
350mV
V
IN
SHDN
2µA
+
V
REF
RAMP
–
+
–
+
STEP-DOWN
CHARGE
PUMP
MODE
CONTROL
600kHz
OSCILLATOR
–
+
turn-on (see Applications Information). If neither of the
two functions are desired, the pin may be floated or tied
to V
IN
.
C2
+
(Pin 6): Flying Capacitor Two Positive Terminal.
GND (Pin 7): Ground. Connect to a ground plane for best
performance.
C2
–
(Pin 8): Flying Capacitor Two Negative Terminal.
UU
U
PI FU CTIO S
BLOCK DIAGRA
W