LP2989

ACTIVE

500-mA, 16-V, low-dropout voltage regulator with power good & enable

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS7A26 ACTIVE 500-mA, 18-V, ultra-low-IQ, high-accuracy, adjustable low-dropout voltage regulator with power good This is a 500-mA LDO with power good and lower IQ (2.5 μA).

Product details

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 16 Vin (min) (V) 2.1 Vout (max) (V) 5 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 2.8, 3, 3.3, 3.8, 5 Noise (µVrms) 18 Iq (typ) (mA) 0.11 Thermal resistance θJA (°C/W) 35 Rating Catalog Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 32 Dropout voltage (Vdo) (typ) (mV) 310 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 16 Vin (min) (V) 2.1 Vout (max) (V) 5 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 2.8, 3, 3.3, 3.8, 5 Noise (µVrms) 18 Iq (typ) (mA) 0.11 Thermal resistance θJA (°C/W) 35 Rating Catalog Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 32 Dropout voltage (Vdo) (typ) (mV) 310 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGN) 8 16 mm² 4 x 4
  • 2.1-V to 16-V Input Voltage Range
  • 2.5-V to 5-V Fixed Output Voltage Options
  • Ultra-Low Dropout Voltage
  • 500-mA Continuous Output Current
  • Very Low Output Noise With External Capacitor
  • < 0.8-µA Quiescent Current When Shutdown
  • Low Ground Pin Current at All Loads
  • 0.75% Output Voltage Accuracy (A Grade)
  • High Peak Current Capability (800-mA typical)
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range
  • 2.1-V to 16-V Input Voltage Range
  • 2.5-V to 5-V Fixed Output Voltage Options
  • Ultra-Low Dropout Voltage
  • 500-mA Continuous Output Current
  • Very Low Output Noise With External Capacitor
  • < 0.8-µA Quiescent Current When Shutdown
  • Low Ground Pin Current at All Loads
  • 0.75% Output Voltage Accuracy (A Grade)
  • High Peak Current Capability (800-mA typical)
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range

The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.

Output noise can be reduced to 18 µV (typical) by connecting an external 10-nF capacitor to the bypass pin.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:

  • Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-µA load.
  • Ground Pin Current: Typically 3 mA at 500-mA load, and 110 µA at 100-µA load.
  • Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled low.
  • Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.
  • Precision Output: Output voltage accuracy is 0.75% (A grade) and 1.25% (standard grade) at room temperature.

For output voltages < 2 V, see LP2989LV (SNVS086) data sheet.

The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.

Output noise can be reduced to 18 µV (typical) by connecting an external 10-nF capacitor to the bypass pin.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:

  • Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-µA load.
  • Ground Pin Current: Typically 3 mA at 500-mA load, and 110 µA at 100-µA load.
  • Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled low.
  • Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.
  • Precision Output: Output voltage accuracy is 0.75% (A grade) and 1.25% (standard grade) at room temperature.

For output voltages < 2 V, see LP2989LV (SNVS086) data sheet.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors datasheet (Rev. O) PDF | HTML 10 Mar 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018

Design & development

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

Simulation model

LP2989A 2.5V PSpice Transient Model

SLVMAJ9.ZIP (45 KB) - PSpice Model
Simulation model

LP2989A 3.3V PSpice Transient Model

SLVMAL0.ZIP (46 KB) - PSpice Model
Simulation model

LP2989A 5.0V PSpice Transient Model

SLVMAL1.ZIP (45 KB) - PSpice Model
Simulation model

LP2989A_2P5 Unencrypted PSpice Transient Model

SNVMA89.ZIP (1 KB) - PSpice Model
Simulation model

LP2989A_3P3 Unencrypted PSpice Transient Model

SNVMA88.ZIP (2 KB) - PSpice Model
Simulation model

LP2989A_5P0 Unencrypted PSpice Transient Model

SNVMA87.ZIP (1 KB) - PSpice Model
Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options
WSON (NGN) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos