AIC2362 Datasheet, PDF (1/10 Pages) Analog Intergrations Corporation – 2A 550k/1.1MHz Synchronous PWM/PSM

AIC2362
2A 550k/1.1MHz Synchronous PWM/PSM
Step-Down Converter with High Light-load Efficiency
 ^FEATURES
 ^DESCRIPTION
 2.5V to 6V Input Voltage Range
The AIC2362 is a low-noise, pulse-width-
 Adjustable Output Voltage from 0.8V to Vin
modulated (PWM), DC-DC step-down converter.
 2.0A Guaranteed Output Current
The device features an internal synchronous
 93% Efficiency at Heavy Load
rectifier for high efficiency; it requires no external
(Vin=5V, Vout=3.3V, Iout=2.0A)
Schottky diode. The AIC2362 is ideally suited for
 96% Efficiency at Moderate Load
Li-Ion battery applications. Automatic PWM/PSM
(Vin=5V, Vout=3.3V, Iout=1.0A)
mode extends battery life and enhance
 90% Efficiency at Light Load
efficiency by switching to a pulse-skipping-
(Vin=5V, Vout=3.3V, Iout=20mA)
 Low R_DS(ON) Internal Switches: 110mΩ
modulated mode during light load. Shutdown
mode places the device in standby, reducing
 No Schottky Diode Required
supply current to under 2µA.
 100% Duty Cycle in Low Dropout Operation
Other features of the AIC2362 include high
 Fixed 550k/1.1MHz Operating Frequency
efficiency for all load range, low dropout voltage,
 Optional Soft-Start Internal Fixed 1ms Soft-
short circuit protection, and over temperature
Start
protection.
 ^APPLICATIONS
 ^{LCD TV}
 ^{Portable Products}
 ^{Wireless and DSL Modems}
 Solid-State Drives
 Battery-Operated Devices (1 Li-Ion or 3
NiMH/ NiCd)
 ^{APPLICATIONS CIRCUIT}
VIN
8
VIN
LX
7
L1
2.2uH
5V
R1
10Ω
1
VCC
FB
4
5
ON OFF
EN
REF
2
C2
C1
0.1uF
6
PGND
GND
3
10uF
AIC2362
C4
0.1uF
VOUT
R2
3.3V
50kΩ
R3
16kΩ
C3
22uF
Typical Application Circuit
Analog Integrations Corporation
Si-Soft Research Center
3A1, 1 Li-Hsin 1^st Rd., Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: [phone]
FAX: [phone]
DS-2362G-05 20150122
www.analog.com.tw
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