LM3280 Series

Adjustable Step-Down DC-DC Converter and 3 LDOs for RF Power Management

Catalog

Adjustable Step-Down DC-DC Converter and 3 LDOs for RF Power Management

Part	Mounting Type	Package / Case	Voltage/Current - Output 3	Voltage/Current - Output 1 [Min]	Voltage/Current - Output 1 [Max]	Voltage/Current - Output 1	Frequency - Switching	Voltage/Current - Output 2	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Number of Outputs	Topology	Operating Temperature [Min]	Operating Temperature [Max]
Texas Instruments LM3280TL-275/NOPB	Surface Mount	16-WFBGA	2.75 V 20 mA	0.8 V	3.6 V	300 mA	2 MHz	2.85 V 20 mA	2.7 V	5.5 V	16-DSBGA	4	Linear (LDO) (3) Step-Down (Buck) (1)	-30 ░C	85 °C
Texas Instruments LM3280TLX-275/NOPB	Surface Mount	16-WFBGA	2.75 V 20 mA	0.8 V	3.6 V	300 mA	2 MHz	2.85 V 20 mA	2.7 V	5.5 V	16-DSBGA	4	Linear (LDO) (3) Step-Down (Buck) (1)	-30 ░C	85 °C
Texas Instruments LM3280TL-290/NOPB	Surface Mount	16-WFBGA	2.9 V 20 mA	0.8 V	3.6 V	300 mA	2 MHz	2.85 V 20 mA	2.7 V	5.5 V	16-DSBGA	4	Linear (LDO) (3) Step-Down (Buck) (1)	-30 ░C	85 °C

Catalog

Adjustable Step-Down DC-DC Converter and 3 LDOs for RF Power Management

Key Features

• 2MHz (typ.) PWM Switching FrequencyOperates from a Single Li-Ion Cell (2.7V to 5.5V)Adjustable Output Voltage (0.8V to 3.6V) DC-DCHigh-Efficiency Synchronous Buck Converter300mA Maximum Load Capability (PWM Mode)500mA Maximum Load Capability (Bypass mode)PWM, Forced and Automatic Bypass Mode3 Low-Dropout and Fast Transient Response LDOs16-pin DSBGA PackageCurrent Overload ProtectionThermal Overload Protection2MHz (typ.) PWM Switching FrequencyOperates from a Single Li-Ion Cell (2.7V to 5.5V)Adjustable Output Voltage (0.8V to 3.6V) DC-DCHigh-Efficiency Synchronous Buck Converter300mA Maximum Load Capability (PWM Mode)500mA Maximum Load Capability (Bypass mode)PWM, Forced and Automatic Bypass Mode3 Low-Dropout and Fast Transient Response LDOs16-pin DSBGA PackageCurrent Overload ProtectionThermal Overload Protection

Description

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. The LDO operates a nominal output voltage of 2.85V and maximum load current capability of 20mA for a reference voltage required by linear RF power amplifiers. The LM3280 additionally features a separate enable pin for each output. The LM3280 is available in a 16-pin lead free DSBGA package. 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. The LDO operates a nominal output voltage of 2.85V and maximum load current capability of 20mA for a reference voltage required by linear RF power amplifiers. The LM3280 additionally features a separate enable pin for each output. The LM3280 is available in a 16-pin lead free DSBGA package.