LM2852 Datasheet | National Semiconductor

LM2852 2A 500/1500k Hz Synchronous SIMPLE SWITCHER ® Buck Regulator October 2006 .. LM2852 2A 500/1500k Hz Synchronous SIMPLE SWITCHER ® Buck Regulator General Description The LM2852 SIMPLE synchronous buck regulator is a high frequency step-down switching voltage regulator capable of driving up to a 2A load with excellent line and load regulation. The LM2852 can accept an input voltage between 2.85V and 5.5V and deliver an output voltage that is factory programmable from 0.8V to 3.3V in 100m V increments. The LM2852 is available with a choice of two switching frequencies - 500k Hz (LM2852Y) or 1.5MHz (LM2852X). It also Features internal, type-three pensation to deliver a low ponent count solution. The exposed-pad TSSOP-14 package enhances the thermal performance of the LM2852. SWITCHER ® Features n Input voltage range of 2.85 to 5.5V n Factory EEPROM set output voltages from 0.8V to 3.3V in 100m V increments n Maximum load current of 2A n Voltage Mode Control n Internal type-three pensation n Switching frequency of 500k Hz or 1.5MHz n Low standby current of 10µA n Internal 60 mΩ MOSFET switches n Standard voltage options 0.8/1.0/1.2/1.5/1.8/2.5/3.3 volts Applications n Low voltage point of load regulation n Local solution for FPGA/DSP/ASIC core power n Broadband networking and munications infrastructure n Portable puting Typical Application Circuit SIMPLE SWITCHER ® SIMPLE SWITCHERreg; is a registered trademark of National Semiconductor Corporation © 2006 National Semiconductor Corporation DS201270 .national. .. Connection Diagram TOP VIEW MXA14A ETSSOP-14 Pin Descriptions AVIN (Pin 1): Chip bias input pin. This provides power to the logic of the chip. Connect to the input voltage or a separate rail. EN (Pin 2): Enable. Connect this pin to ground to disable the chip; connect to AVIN or leave floating to enable the chip; enable is internally pulled up. SGND (Pin 3):...