ltc1503-2 Linear Technology Corporation, ltc1503-2 Datasheet - Page 5

• Manufacturer Part Number: ltc1503-2
• Description: Ltc1503-2 - High Efficiency Inductorless Step-down Dc/dc Converter
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
PI FU CTIO S
turn-on (see Applications Information). If neither of the
two functions are desired, the pin may be floated or tied
to V
C2
+
U
IN
(Pin 6): Flying Capacitor Two Positive Terminal.
C
.
IN
SHDN/SS
U
V
IN
680k
330k
990k
350mV
U
V
IN
+
W
2 A
–
–
+
–
+
+
350mV
+
OSCILLATOR
SHDN
600kHz
CONTROL
MODE
–
+
SHORT CIRCUIT
REG ENABLE
MODE SKIP
GND (Pin 7): Ground. Connect to a ground plane for best
performance.
C2
–
(Pin 8): Flying Capacitor Two Negative Terminal.
V
OUT
SOFT-START
COMP2
COMP1
LTC1503-1.8/LTC1503-2
–
+
–
+
–
+
STEP-DOWN
V
REF
CHARGE
PUMP
RAMP
+
+
150mV
10mV
1.2V
V
REF
LTC1503-2
800k
1.2M
1503-1.8/2 BD
C1
C1
GND
C2
C2
V
OUT
+
–
+
–
C
OUT
5