LTC3459 LINER [Linear Technology], LTC3459 Datasheet - Page 5

• Manufacturer Part Number: LTC3459
• Description: 10V Micropower Synchronous Boost Converter in ThinSOT
• Manufacturer: LINER [Linear Technology]

PI FU CTIO S
SW (Pin 1): Switch Pin. Connect a 15 H to 33 H inductor
between SW and V
wide as possible to reduce EMI and voltage overshoot. If
the inductor current falls to zero, the internal P-channel
MOSFET synchronous rectifier is turned off to prevent
reverse charging of the inductor.
GND (Pin 2): Signal and Power Ground. Provide a short,
direct PCB path between GND and the (–) side of the filter
capacitors on V
FB (Pin 3): Input to the Burst Mode Comparator. An
external resistor divider connected between V
and this pin sets the output voltage to:
V
U
OUT
= 1.22(1 + R1/R2)
U
IN
and V
IN
U
. Keep PCB trace lengths as short and
OUT
.
OUT
, GND
SHDN (Pin 4): Master Shutdown Input. Driving SHDN low
disables all IC functions and reduces quiescent current
from the battery to less than 2 A. This pin must be pulled
above 1V to enable the IC.
V
Regulator. Bypass V
capacitor between 2.2 F and 10 F. V
with smaller capacitors.
V
ESL ceramic capacitor of at least 1 F.
OUT
IN
(Pin 6): Input Supply Pin. Bypass V
(Pin 5): Regulated Output Voltage of the Boost
OUT
with a low ESR, ESL ceramic
OUT
IN
LTC3459
ripple increases
with a low ESR,
5
3459f