AX3515-Dual 1A PWM step-down DC-DC converterDataSheet

GENERAL D*CRIPTION
    The AX3515 is a dual high-efficiency Pulse-Width-Modulated (PWM) step-down DC-DC converter. It is capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V, the AX3515 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other handheld devices.
    Two operational modes are available: PWM/Low-Dropout auto-switch and shutdown modes. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application.
    The AX3515 enters Low-Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper PMOS. The AX3515 enter shutdown mode and consumes less than 0.1μA when EN pin is pulled low.
    The switching ripple is easily *oothed-out by *all package filtering elements due to a fixed operation frequency of 1.4MHz. This along with *all TDFN-12L (3x3) package provides *all PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.

FEATUR*
- 2.5V to 5.5V Input Voltage Range
- Adjustable Output Voltage from 0.6V to VIN
- 1A Output Current/per channel
- High Efficiency : up to 95%
- No Schottky Diode Required
- 1.4MHz Fixed-Frequency PWM Operation
- Small 12-Lead TDFN Package

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产品分类 
 DC-DC Converter/Controller
 AC-DC Converter/Controller
 Synchronous Rectifier IC
 LED Lighting Driver
 LED Backlighting Driver
 Linera Regulators(LDO)
 DDR Bus Termination
 Li-Ion Battery Charger
 Power Audio Amplifier
 Reset IC
 Operational Amplifiers
 Reference Regulator Shunt
 HALL Effect Sensor
 DC Brushless Motor Driver
 TVS *D Protection
 Power Mosfet
 Power Management Unit
 EEPROM
 Other(Diode)

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