600mA Step-down DC/DC Converter
ADVANCED INFORMATION
AP3405
600mA Step-down DC/DC Converter with Synchronous Rectifier
Description
The AP3405 is a 2.0...
Description
ADVANCED INFORMATION
AP3405
600mA Step-down DC/DC Converter with Synchronous Rectifier
Description
The AP3405 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 AP3405 employs complete protection to ensure system security, including input Undervoltage Lockout, Over-Temperature Protection and hiccup mode Short Circuit Protection.
Pin Assignments
(Top View) Pin 1 Mark
NC 1 NC 2 AGND 3
EP
This IC is available in U-DFN2020-8 package.
PGND 4
8 EN 7 FB 6 VIN 5 SW
U-DFN2020-8 (Type E)
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 Overcurrent Protection Built-in Thermal Shutdown Function Built-in UVLO Function Hiccup Mode SCP Output Current: 600mA Package: U-DFN2020-8 (Type E) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Post DC-DC Voltage Regulation Mobile Phones and Wearable Devices
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http:...
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