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AIC2354 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Analog Intergrations Corporation - PWM/PSM Step-Down DC/DC Converter

شماره قطعه AIC2354
شرح مفصل PWM/PSM Step-Down DC/DC Converter
تولید کننده Analog Intergrations Corporation 
آرم Analog Intergrations Corporation 


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AIC2354 شرح
AIC2354
1A Synchronous PWM/PSM Step-Down
DC/DC Converter
FEATURES
2.5V to 5.5V Input Voltage Range
1.0A Guaranteed Output Current
Up to 95% Efficiency
Low RDS(ON) Internal Switche: 280m
No Schottky Diode Required
100% Duty Cycle in Low Dropout Operation
Operating Frequency: 1.5MHz
Accurate Reference 0.6V Provides Low
Output Voltages
APPLICATIONS
LCD TV
Multi-function Peripheral
Cellular Phones
CPU I/O Supplies
Cordless Phones
PDAs and Handy-Terminals
Battery-Operated Devices (1 Li-Ion or 3
NiMH/ NiCd)
APPLICATIONS CIRCUIT
DESCRIPTION
The AIC2354 is a low-noise, pulse-width-
modulated (PWM), DC-DC step-down converter.
The device is available in an adjustable version
and fixed output voltages of 1.0V, 1.2V, 1.5V,
1.8V, and 3.3V.
The device features an internal synchronous
rectifier for high efficiency; it requires no external
Schottky diode. The AIC2354 is ideally suited for
Li-Ion battery applications. PWM/PSM mode
extends battery life by switching to a pulse-
skipping-modulated mode during light loads.
Shutdown mode places the device in standby,
reducing supply current to under 1µA.
Other features of the AIC2354 include high
efficiency, low dropout voltage, short circuit
protection, over temperature protection, and
over voltage protection. It is available in a small
5 pins SOT-23 and a 6 pins DFN package.
Fig. 1 Fixed Step-Down DC/DC Converter
Analog Integrations Corporation
Si-Soft Research Center
DS-2354G-02 20111101
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C
TEL:
886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
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