AIC1610 Datasheet, PDF (1/16 Pages) Analog Intergrations Corporation – HIGH EFFICIENCY SYNCHRONOUS STEP-UP DC/DC CONVERTER

AIC1610/AIC1611
High Efficiency Synchronous Step-Up DC/DC
Converter
FEATURES
High Efficiency (9 3 % when V_IN=2.4V,
V_OUT=3.3V, I_OUT=200mA)
Output Current up to 500mA. (AIC1610 at
V_IN=2.4V and V_OUT=3.3V)
20µA Quiescent Supply Current.
Power-Saving Shutdown Mode (0.1µA typical).
Internal Synchronous Rectifier (No External Di-
ode Required).
On-Chip Low Battery Detector.
Low Battery Hysteresis
Space-Saving Package: MSOP-8
APPLICATIONS
Palmtop & Notebook Computers.
PDAs
Wireless Phones
Pocket Organizers.
Digital Cameras.
Hand-Held Devices with 1 to 3-Cell of
NiMH/NiCd Batteries.
DESCRIPTION
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.
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.
TYPICAL APPLICATION CIRCUIT
V_IN
+
47µF
ON
OFF
Low Battery
Detection
SHDN
LX
AIC1610 ^OUT
AIC1611
LBI
LBO
REF GND FB
0.1µF
22µH
Output 3.3V, 5.0V
or Adj. (1.8V to 5.5V)
+
up to 300mA
47µF
Low-battery
Detect Out
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: [phone]
FAX: [phone] www.analog.com.tw
DS-1610P-03 010405
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