LM3280 Overview
The LM3280 is a multi-functional Power Management Unit, optimized for low-power handheld 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 Key Features
- 2 2MHz (typ.) PWM Switching Frequency
- Adjustable Output Voltage (0.8V to 3.6V) DC
- High-Efficiency Synchronous Buck Converter
- 300mA Maximum Load Capability (PWM Mode)
- 500mA Maximum Load Capability (Bypass
- PWM, Forced and Automatic Bypass Mode
- 3 Low-Dropout and Fast Transient Response
- 16-pin DSBGA Package
- Current Overload Protection
- Thermal Overload Protection
