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Product Detailed Parameters
- Description：IC REG QD BUCK/LNR 2MHZ 16TUSMD
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Topology：Step-Down (Buck) (1), Linear (LDO) (3)
- Number of Outputs：4
- Frequency - Switching：2MHz
- Voltage/Current - Output 1：0.8V ~ 3.6V, 300mA
- Voltage/Current - Output 2：2.85V, 20mA
- Voltage/Current - Output 3：2.75V, 20mA
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：No
- Voltage - Supply：2.7V ~ 5.5V
- Operating Temperature：-30°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：16-WFBGA
- Supplier Device Package：16-DSBGA
- Grade：-
- Qualification：-
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Overview
The LM3280TL-275/NOPB is a DC/DC converter from Texas Instruments featuring an adjustable step-down switching regulator and three low-dropout (LDO) linear regulators. It operates with an input voltage range up to 5.5 V and includes a 2 MHz switching frequency. The device provides a nominal LDO output of 2.85 V with a maximum load current capability of 20 mA, designed for reference voltage requirements in linear RF power amplifiers. It is housed in a 16-DSBGA package and functions within a temperature range of -30°C to +85°C.
Feature Summary
- Integrates an adjustable step-down DC-DC converter with three dedicated LDO outputs
- Provides stable reference voltage generation suitable for RF power amplifier biasing
- Supports high-frequency operation at 2 MHz for compact passive component sizing
Applications
- Linear RF power amplifier power management
- Reference voltage supply circuits
- Mobile communication devices requiring integrated power regulation
Procurement Notes
Verify the specific suffix '275' indicates the fixed 2.85V LDO configuration rather than other variants. Confirm the 16-DSBGA package marking code matches V002 specifications. Check current manufacturing status as some sources indicate this part may be obsolete or require substitution verification before final procurement decisions.
Selection Notes
Select this component when a combined solution for switching regulation and precise LDO reference voltage is required for RF applications. Ensure the 20mA LDO current limit meets the target amplifier's bias current needs. Verify that the 5.5V maximum input voltage aligns with the system's available power rail.
Part Context
This part belongs to Texas Instruments' family of integrated power management ICs designed for mobile and RF applications. It combines switching efficiency with linear regulation precision, addressing the need for clean power supplies in sensitive analog circuits while minimizing board space through its dense DSBGA packaging.
Replacement Considerations
LM3280TLX-275/NOPB is listed as an obsolete substitute option. Parametric equivalents should be evaluated if this specific part number is unavailable or discontinued.
