FAN2315MPX Datasheet, PDF (1/19 Pages) Fairchild Semiconductor – FAN2315 TinyBuck 15 A Integrated Synchronous Buck Regulator

October 2013
FAN2315
TinyBuck™ 15 A Integrated Synchronous Buck Regulator
Features
 V_IN Range: 4.5 V to 15 V
 High Efficiency: Over 96% Peak
 Continuous Output Current: 15 A
 MOSFETs R_DS,ON (Typical): HS: 6.48 mΩ,
LS: 1.63 mΩ
 PFM Mode for Light-Load Efficiency
 Excellent Line and Load Transient Response
 Precision Reference: ±1% Over Temperature
 Output Voltage Range: 0.6 to 5.5 V
 Programmable Frequency: 200 kHz to 1 MHz
 Programmable Soft-Start
 Low Shutdown Current
 Adjustable Sourcing Current Limit
 Internal Boot Diode
 Thermal Shutdown
 Halogen and Lead Free, RoHS Compliant
Applications
 Servers and Desktop Computers
 NVDC Notebooks, Netbooks
 Game Consoles
 Telecommunications
 Storage
 Base Stations
Description
The FAN2315 TinyBuck™ is a highly efficient integrated
synchronous buck regulator. The regulator is capable of
operating with an input range from 4.5 V to 15 V and
supporting up to 15 A load currents.
The FAN2315 utilizes Fairchild’s constant on-time
control architecture to provide excellent transient
response and to maintain a relatively constant switching
frequency. The device utilizes Pulse Frequency
Modulation (PFM) mode to maximize light-load
efficiency by reducing switching frequency when the
inductor is operating in discontinuous conduction mode
at light loads.
Switching frequency and over-current protection can
be programmed to provide a flexible solution for
various applications. Output over-voltage, under-
voltage, over-current, and thermal shutdown protections
help prevent damage to the device during fault
conditions. A hysteresis feature restarts the device
when normal operating temperature is reached.
Ordering Information
Part Number
Configuration
FAN2315MPX PFM with Ultrasonic Mode
Operating
Temperature Range
-40 to 85°C
Output
Current (A)
15
Package
34-Lead, PQFN,
5.5 mm x 5.0 mm
Forced PWM available on request. Please send requests and support questions to [e-mail].
© 2011 Fairchild Semiconductor Corporation
FAN2315 • Rev. 1.0.4
www.fairchildsemi.com