Texas Instruments LP2980-ADJ Adj-Output LDO Voltage Regulators

Texas Instruments LP2980-ADJ Adjustable-Output Wide-Input Low-Dropout (LDO) Voltage Regulators support an input voltage range of up to 16V and up to 50mA load current. The LP2980-ADJ supports an output range of 1.2V to 15.0V (new chip) and 1.23V to 15.0V (legacy chip). Additionally, the LP2980-ADJ (new chip) has a 1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

In the new chip, wide bandwidth PSRR performance of greater than 70dB at 1kHz and 45dB at 1MHz helps attenuate the switching frequency of an upstream DC/DC converter and minimize post-regulator filtering. The internal soft-start time and current-limit protection reduce inrush current during start-up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included. The Texas Instruments LP2980-ADJ comes in a 5-pin, 2.9mm × 1.6mm SOT-23 (DBV) package.

Features

V_IN range
- Legacy chip: 2.2V to 16V
- New chip: 2.5V to 16V
V_OUT range
- Legacy chip: 1.23V to 15.0V
- New chip: 1.2V to 15.0V
V_OUT(typ) accuracy
- Legacy chip: ±1%
- New chip: ±0.5%
Output accuracy over load and temperature
- Legacy chip: ±3.5%
- New chip: ±1%
Up to 50mA output current

Quiescent current, low I_Q (new chip)
- 55µA at I_LOAD = 0mA
- 350µA at I_LOAD = 50mA
Shutdown current over temperature
- Legacy chip: < 1µA
- New chip: ≤ 0.8µA
Output current limiting and thermal protection
Stable with 2.2µF ceramic capacitors (new chip)
High PSRR (new chip)
- 70dB at 1kHz, 42dB at 1MHz
–40°C to +125°C operating junction temperature
5-pin SOT-23 (DBV) package

Part Options

LP2980cxxxz-ADJ/NOPB - Legacy chip
A is for higher accuracy and non-A is for standard grade
c is the accuracy specification
xxx is the package designator
X is for a large quantity reel and non-X is for a small quantity reel
z is the package quantity

LP2980Axxxz-ADJ/M3 - New chip
A is for higher accuracy and non-A is for standard grade
xxx is the package designator
X is for a large quantity reel and non-X is for a small quantity reel
z is the package quantity
M3 is a suffix designator for newer chip redesigns fabricated on current TI process technology