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AIC2364

4A Synchronous PWM/PSM Step-Down Converter with Light Load Efficiency

FEATURES
  • 2.5V to 6V Input Voltage Range
  • Adjustable Output Voltage from 0.8V to Vin
  • 4.0A Guaranteed Output Current
  • Up to 95% Efficiency on Heavy Load(Vin=3.3V, Vout=2.5V, Iout=2.0A)
  • Up to 94% Efficiency on Moderate Load(Vin=3.3V, Vout=2.5V, Iout=200mA)
  • Up to 93% Efficiency on Light Load(Vin=3.3V, Vout=2.5V, Iout=20mA)
  • Low RDS(ON) Internal Switches: 70mOhm
  • No Schottky Diode Required
  • 100% Duty Cycle in Low Dropout Operation
  • Optional 550KHz/1.2MHz Operating Frequency
  • Optional Programmable Soft-Start (in DFN-12) or Internal Fixed 1ms Soft-Start (in SOP-8)
  • Optional Power Good Monitor (Only in DFN-12 Package)
  • SCP, OTP, OVP
APPLICATIONS
  • LCD TV
  • Multi-function Peripheral
  • Cellular Phones
  • CPU I/O Supplies
  • PDAs and Handy-Terminals
  • Battery-Operated Devices (1 Li-Ion or 3 NiMH/ NiCd).
DESCRIPTION
The AIC2364 is a low-noise, pulse-widthmodulated (PWM), DC-DC step-down converter.
The device features an internal synchronous rectifier for high efficiency; it requires no external Schottky diode. The AIC2364 is ideally suited for Li-Ion battery applications. PWM/PSM mode extends battery life and enhance efficiency by switching to a pulse-skipping-modulated mode during light loads. Shutdown mode places the device in standby, reducing supply current to under 2uA.
Other features of the AIC2364 include high efficiency for all load range, low dropout voltage, short circuit protection, over temperature protection, and over voltage protection. It is available in SOP-8E and DFN-10 (3x3) packages.
TYPICAL APPLICATION


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