AP3403

NEW PRODUCT A Product Line of Diodes Incorporated AP3403 600mA STEP-DOWN DC/DC CONVERTER WITH SYNCHRONOUS RECTIFIER Description The AP3403 is a 2.0MHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 600mA load with high efficiency, excellent line and load regulation. The high efficiency is easily configured by using an inductor, resistors and capacitors as the external components. Current mode control provides fast transient response and cycle-by-cycle current limit. The AP3403 employs complete protection to ensure system security, including input Under Voltage Lock Out, Over Temperature Protection and hiccup mode Short Circuit Protection. This IC is available in U-DFN1616-6 package. Pin Assignments (Top View) Pin 1 Mark EN 1 AGND 2 EP 6 FB 5 VIN Features  High Efficiency Buck Power Converter  Input Voltage Range: 2.3V to 5.5V  Output Voltage Range: 0.7V to 5.5V  Fixed 2.0MHz Oscillator Frequency  Built-in Soft-start Time  Built-in Over Current Protection  Built-in Thermal Shutdown Function  Built-in UVLO Function  Hiccup Mode SCP  Output Current: 600mA  Package: U-DFN1616-6  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) PGND 3 4 SW U-DFN1616-6 (Type G) Applications  Post DC-DC Voltage Regulation  PDA and Notebook Computer Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See htt...