AIC1610/AIC1611
High Efficiency Synchronous Step-Up DC/DC
Converter
DESCRIPTION
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FEATURES
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High Efficiency (93% when VIN=2.4V,
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The AIC1610/AIC1611 are high efficiency
step up DC-DC converters. The start-up volt-
age is as low as 0.8V with operating voltage
down to 0.7V. Simply consuming 20µA of qui-
escent current. These devices offer a built-in
synchronous rectifier that reduces size and
cost by eliminating the need for an external
Schottky diode and improves overall effi-
ciency by minimizing losses.
V
OUT=3.3V, IOUT=200mA)
Output Current up to 500mA. (AIC1610 at
VIN=2.4V and VOUT=3.3V)
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20µA Quiescent Supply Current.
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Power-Saving Shutdown Mode (0.1µA typical).
Internal Synchronous Rectifier (No External Di-
ode Required).
On-Chip Low Battery Detector.
Low Battery Hysteresis
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Space-Saving Package: MSOP-8
The switching frequency can range up to
500KHz depending on the load and input volt-
age. The output voltage can be easily set by
two external resistors from 1.8V to 5.5V,
connecting FB to OUT to get 3.3V, or con-
necting to GND to get 5.0V. The peak current
of the internal switch is fixed at 1.0A (AIC1610)
or 0.65A (AIC1611) for design flexibility.
APPLICATIONS
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Palmtop & Notebook Computers.
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PDAs
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Wireless Phones
Pocket Organizers.
Digital Cameras.
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Hand-Held Devices with
NiMH/NiCd Batteries.
1
to 3-Cell of
TYPICAL APPLICATION CIRCUIT
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V
IN
+
47µF
22µH
LX
ON
OFF
Output 3.3V, 5.0V
or Adj. (1.8V to 5.5V)
up to 300mA
SHDN
AIC1610
OUT
+
47µF
AIC1611
Low Battery
Detection
LBI
Low-battery
Detect Out
LBO
FB
REF
GND
0.1µF
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
DS-1610P-03 010405
TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
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