LP5912

ACTIVE

500-mA low-noise low-IQ low-dropout voltage regulator with reverse current protect

Product details

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 6.5 Vin (min) (V) 1.6 Vout (max) (V) 3.3 Vout (min) (V) 0.9 Fixed output options (V) 0.9, 1, 1.1, 1.2, 1.5, 1.8, 2.5, 2.8, 3, 3.3, 5 Noise (µVrms) 12 Iq (typ) (mA) 0.03 Thermal resistance θJA (°C/W) 71, 75.8 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Output discharge, Power good, Reverse Current Protection, Soft start Accuracy (%) 3 PSRR at 100 KHz (dB) 40 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 6.5 Vin (min) (V) 1.6 Vout (max) (V) 3.3 Vout (min) (V) 0.9 Fixed output options (V) 0.9, 1, 1.1, 1.2, 1.5, 1.8, 2.5, 2.8, 3, 3.3, 5 Noise (µVrms) 12 Iq (typ) (mA) 0.03 Thermal resistance θJA (°C/W) 71, 75.8 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Output discharge, Power good, Reverse Current Protection, Soft start Accuracy (%) 3 PSRR at 100 KHz (dB) 40 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² 2 x 2
  • Input Voltage Range: 1.6 V to 6.5 V
  • Output Voltage Range: 0.8 V to 5.5 V
  • Output Current up to 500 mA
  • Low Output-Voltage Noise: 12 µVRMS Typical
  • PSRR at 1 kHz: 75 dB Typical
  • Output Voltage Tolerance (VOUT ≥ 3.3 V): ±2%
  • Low IQ (Enabled, No Load): 30 µA Typical
  • Low Dropout (VOUT ≥ 3.3 V): 95 mV Typical at 500-mA Load
  • Stable With 1-µF Ceramic Input and Output Capacitors
  • Thermal-Overload and Short-Circuit Protection
  • Reverse Current Protection
  • No Noise Bypass Capacitor Required
  • Output Automatic Discharge for Fast Turnoff
  • Power-Good Output With 140-µs Typical Delay
  • Internal Soft-Start to Limit the In-rush Current
  • –40°C to +125°C Operating Junction Temperature Range
  • Input Voltage Range: 1.6 V to 6.5 V
  • Output Voltage Range: 0.8 V to 5.5 V
  • Output Current up to 500 mA
  • Low Output-Voltage Noise: 12 µVRMS Typical
  • PSRR at 1 kHz: 75 dB Typical
  • Output Voltage Tolerance (VOUT ≥ 3.3 V): ±2%
  • Low IQ (Enabled, No Load): 30 µA Typical
  • Low Dropout (VOUT ≥ 3.3 V): 95 mV Typical at 500-mA Load
  • Stable With 1-µF Ceramic Input and Output Capacitors
  • Thermal-Overload and Short-Circuit Protection
  • Reverse Current Protection
  • No Noise Bypass Capacitor Required
  • Output Automatic Discharge for Fast Turnoff
  • Power-Good Output With 140-µs Typical Delay
  • Internal Soft-Start to Limit the In-rush Current
  • –40°C to +125°C Operating Junction Temperature Range

The LP5912 is low-noise LDO that can supply up to 500 mA of output current. Designed to meet the requirements of RF and analog circuits, the LP5912 device provides low noise, high PSRR, low quiescent current, and low line and load transient response. The LP5912 offers class-leading noise performance without a noise bypass capacitor and with the ability for remote output capacitance placement.

The device is designed to work with a 1-µF input and a 1-µF output ceramic capacitor (no separate noise bypass capacitor required).

This device is available with fixed output voltages from 0.8 V to 5.5 V in 25-mV steps. Contact Texas Instruments Sales for specific voltage option needs.

The LP5912 is low-noise LDO that can supply up to 500 mA of output current. Designed to meet the requirements of RF and analog circuits, the LP5912 device provides low noise, high PSRR, low quiescent current, and low line and load transient response. The LP5912 offers class-leading noise performance without a noise bypass capacitor and with the ability for remote output capacitance placement.

The device is designed to work with a 1-µF input and a 1-µF output ceramic capacitor (no separate noise bypass capacitor required).

This device is available with fixed output voltages from 0.8 V to 5.5 V in 25-mV steps. Contact Texas Instruments Sales for specific voltage option needs.

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Technical documentation

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Type Title Date
* Data sheet LP5912 500-mA Low-Noise, Low-IQ LDO datasheet (Rev. D) PDF | HTML 29 Nov 2016
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
EVM User's guide LP5912DRV EVM User's Guide 15 Dec 2015

Design & development

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

Evaluation board

LP5912DRV33EVM — LP5912 3.3-V 500-mA low-noise low-IQ LDO linear regulator evaluation module

The LP5912EVM facilitates evaluation of the LP5912-3.3DRVR Low-Noise, 500mA Linear Regulator with user accessible test points for Enable (EN) and Power Good (PG). The EVM is a standalone evaluation module containing one positive voltage low-dropout regulator IC for fixed voltage regulation (3.3V). (...)

User guide: PDF
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Simulation model

LP5912 0P9 PSpice Transient Model

SNVMAJ1.ZIP (62 KB) - PSpice Model
Simulation model

LP5912 0P9 Unencrypted PSpice Transient Model

SNVMAJ0.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 1P0 PSpice Transient Model

SNVMBO0.ZIP (65 KB) - PSpice Model
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LP5912 1P0 Unencrypted PSpice Transient Model

SNVMBO3.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 1P1 PSpice Transient Model

SNVMB44.ZIP (63 KB) - PSpice Model
Simulation model

LP5912 1P1 Unencrypted PSpice Transient Model

SNVMB43.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 1P2 PSpice Transient Model

SNVMB47.ZIP (63 KB) - PSpice Model
Simulation model

LP5912 1P2 Unencrypted PSpice Transient Model

SNVMB46.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 1P5 PSpice Transient Model

SNVMAI7.ZIP (62 KB) - PSpice Model
Simulation model

LP5912 1P5 Unencrypted PSpice Transient Model

SNVMAI8.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 1P8 Unencrypted PSpice Transient Model

SNVMAJ4.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 1P8_PSpice Transient Model

SNVMAI3.ZIP (61 KB) - PSpice Model
Simulation model

LP5912 2P5 PSpice Transient Model

SNVMBO5.ZIP (61 KB) - PSpice Model
Simulation model

LP5912 2P5 Unencrypted PSpice Transient Model

SNVMBO4.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 2P8 PSpice Transient Model

SNVMAI9.ZIP (62 KB) - PSpice Model
Simulation model

LP5912 2P8_Unencrypted PSpice Transient Model

SNVMAI2.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 3P0 PSpice Transient Model

SNVMB42.ZIP (63 KB) - PSpice Model
Simulation model

LP5912 3P0 Unencrypted PSpice Transient Model

SNVMB45.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 3P3 PSpice Transient Model

SNVMAJ3.ZIP (59 KB) - PSpice Model
Simulation model

LP5912 3P3 Unencrypted PSpice Transient Model

SNVMAJ2.ZIP (3 KB) - PSpice Model
Simulation model

LP5912 5P0 PSpice Transient Model

SNVMBO1.ZIP (61 KB) - PSpice Model
Simulation model

LP5912 5P0 Unencrypted PSpice Transient Model

SNVMBO2.ZIP (3 KB) - PSpice Model
Reference designs

TIDA-00897 — High-Accuracy Logarithmic RMS Power Detector Reference Design for WLAN Applications

Dynamic transmit-power control is critical for improving spectral efficiency and reducing adjacent channel interference in wireless local area networks (WLANs). In addition, regulatory agencies worldwide require that transmit power be limited to a certain level to reduce interference with other (...)
Design guide: PDF
Schematic: PDF
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WSON (DRV) 6 View options

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