LN2407 - Natlinear

LN2407 PWM/PFM Automatic Switching Controlled Synchronous DC-DC Converters

LN2407 series is a group of high efficiency synchronous-rectification type buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.8V and 3.3V. Automatic PWM/PFM mode operation increases efficiency and decreases output voltage ripple at light loads, further extendin.

Features

 High Efficiency: 92％
 Input Voltage Range: 2.0 ~ 6.0V
 Output Current: 800mA
 Shutdown Current: <1uA
 Oscillation Frequency: 1.4MHz
■ Typical Application Circuit
■ Applications
 Cellular and Smart Phones
 PDAs
 MP3/MP4 Player
 Digital Still and Video Cameras
 Microprocessors and DSP Core Supplies
 Portable Instruments
■ Package
 SOT-23-5 54 LX FB/VOUT VIN GND CE 123 (Top View)
■ Ordering Information LN2407 ①②③④⑤ Designator ① 1 ②2 ③ ④ ⑤ Symbol 13 83 F M R S Description 4 Output Voltage: 1.2V、1.8V、3.3V、4.2V 2 Adjustable version: ①② fixed as 00 Oscillation Frequency 1.4MHz .