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Product details

Parameters

Output options Fixed Output Iout (Max) (A) 0.05 Vin (Max) (V) 16 Vin (Min) (V) 2.1 Vout (Max) (V) 5 Vout (Min) (V) 2.5 Fixed output options (V) 2.5, 3, 3.3, 3.8, 4.7, 5 Noise (uVrms) 160 Iq (Typ) (mA) 0.065 Thermal resistance θJA (°C/W) 175 Approx. price (US$) 0.17 | 1ku Load capacitance (Min) (µF) 2.2 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 120 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Linear regulators (LDO)

Features

  • 2.1-V to 16-V Input Voltage Range
  • 5-V, 4.7-V, 3.3-V, 3-V, and 2.5-V Output Versions
  • Ultra-Low-Dropout Voltage
  • Output Voltage Accuracy 0.5% (A Grade)
  • Ensured 50-mA Output Current
  • Requires Only 1-μF External Capacitance
  • < 1-μA Quiescent Current When Shutdown
  • Low Ground Pin Current at All Load Currents
  • High Peak Current Capability (150 mA Typical)
  • Wide Supply Voltage Range (16 V Maximum)
  • Fast Dynamic Response to Line and Load
  • Low ZOUT Over Wide Frequency Range
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range
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Description

The LP2980-N is a 50-mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications.

Using an optimized VIP (Vertically Integrated PNP) process, the LP2980-N delivers unequaled performance in all specifications critical to battery-powered designs:

Dropout voltage: Typically 120 mV at 50-mA load, and 7 mV at 1-mA load.

Ground pin current: Typically 375 μA at 50-mA load, and 80 μA at 1-mA load.

Sleep mode: Less than 1-μA quiescent current when ON/OFF pin is pulled to less than 0.18 V.

Minimum part count: Requires only a 1-μF capacitor on the regulator output.

Precision output: Initial output voltage tolerance of ±0.5% (A grade).

5-V, 4.7-V, 3.3-V, 3-V, and 2.5-V versions available as standard products.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

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Type Title Date
* Datasheet LP2980-N Micropower 50-mA Ultra-Low-Dropout Regulator in SOT-23 Package datasheet (Rev. P) Sep. 09, 2016
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
Application notes AN-1172 LP2980, LP2981, LP2982, LP2985 Micro SMD Demo Boards (Rev. B) Apr. 25, 2013
Application notes AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) Apr. 23, 2013
White papers Engineers note: Capacitors are key to voltage regulator design Jul. 01, 2002

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Reference designs

REFERENCE DESIGNS Download
280W Automotive Dual-Phase Synchronous Buck Reference Design with 24VDC Input, 12VDC Output
PMP30168 — This 280W two phase synchronous buck converter for automotive applications is designed for a nominal input voltage of 24V to 28V with support for cranking (down to 18V) and load dump < 58V. It provides up to 20A output current at an output voltage of 12 to 14V, which can be set externally through (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Low Power Flyback with Ultra Wide Input Voltage Range Reference Design
PMP10098 This reference design has an ultra-wide input voltage range from 19-375V DC / 19-265V AC, and provides an isolated output of 12.0V/40mA. A linear regulator provides a second output of 5.0V/15mA.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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