LM3280 Adjustable Step-Down DC-DC Converter and 3 LDOs

National Semiconductor

Description

LM3280 Adjustable Step-Down DC-DC Converter and 3 LDOs for RF Power Management January 2007 LM3280 Adjustable Step-Down DC-DC Converter and 3 LDOs f.
The LM3280 is a multi-functional Power Management Unit, optimized for low-power handheld applications such as Cellular Phones.

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Datasheet Specifications

Part number: LM3280
Manufacturer: National Semiconductor
File Size: 723.39 KB
Datasheet: LM3280-NationalSemiconductor.pdf
Description: Adjustable Step-Down DC-DC Converter and 3 LDOs

Features

* a separate enable pin for each output. The LM3280 is available in a 16-pin lead free micro SMD package. Features
* 2MHz (typ. ) PWM Switching Frequency
* Operates from a single Li-Ion cell (2.7V to 5.5V)
* Adjustable Output Voltage (0.8V to 3.6V) DC-DC
* High-efficiency synchronous b

Applications

* such as Cellular Phones. The LM3280 incorporates three low-dropout LDO voltage regulators and one step down PWM DC-DC converter with an internal Bypass FET. The step down converter's output voltage can be set using an analog input (VCON) for optimizing efficiency of the RF PA at various power levels

LM3280 Distributors

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LM3280 Adjustable Step-Down DC-DC Converter and LDOs National Semiconductor

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