FAN5355 Datasheet PDF – Digitally Programmable Regulator

Part Number: FAN5355

Function: 1A, 0.8A, 3Mhz, Digitally Programmable Regulator

Package: WLCSP-12 Type, MLP-10 Type

Manufacturer: Fairchild Semiconductor


FAN5355 datasheet



The FAN5355 device is a high-frequency, ultra-fast transient response, synchronous step-down DC-DC converter optimized for low-power applications using small, low-cost inductors and capacitors. The FAN5355 supports up to 800mA or 1A(1) load current.


1. 91% Efficiency at 3MHz

2. 800mA, 1A, or 1.1A Output Current

3. I2C-Compatible Interface up to 3.4Mbps

4. 6-bit VOUT Programmable from 0.75V to 1.975V

5. 2.7V to 5.5V Input Voltage Range

6. 3MHz Fixed-Frequency Operation

7. Excellent Load and Line Transient Response

8. Small Size, 1µH Inductor Solution

9. ±2% PWM DC Voltage Accuracy

10. 35ns Minimum On-Time

11. High-Efficiency, Low-Ripple, Light-Load PFM

12. Smooth Transition between PWM and PFM

13. 37µA Operating PFM Quiescent Current



1. SmartReflex-Compliant Power Supply

2. Split Supply DSPs and μP Solutions OMAP, XSCALE

3. Cell Phones, Smart Phones, PDAs, Digital Cameras, and Portable Media Players

4. Micro DC-DC Converter Modules

5. Handset Graphic Processors


Other data sheets are available within the file:

FAN5355MP00X, FAN5355UC00X, FAN5355UC02X, FAN5355UC03X


FAN5355 Datasheet PDF Download

FAN5355 pdf