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Product details

Parameters

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, 1.2, 1.5, 1.8, 2.8, 3, 3.3 Noise (uVrms) 12 Iq (Typ) (mA) 0.03 Thermal resistance θJA (°C/W) 71 Approx. price (US$) 0.42 | 1ku TI functional safety category Functional Safety-Capable Load capacitance (Min) (µF) 1 Rating Automotive Regulated outputs (#) 1 Features Enable, Output Discharge, Power Good, Reverse Current Protection, Soft Start Accuracy (%) 3 PSRR @ 100 KHz (dB) 40 Dropout voltage (Vdo) (Typ) (mV) 150 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

WSON (DRV) 6 4 mm² 2 x 2 open-in-new Find other Linear regulators (LDO)

Features

  • Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C6
  • 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
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Description

The LP5912-Q1 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-Q1 device provides low noise, high PSRR, low quiescent current, and low line and load transient response. The LP5912-Q1 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.

For all available packages, see the Package Option Addendum (POA) at the end of this data sheet.

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Technical documentation

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Type Title Date
* Datasheet LP5912-Q1 Automotive 500-mA Low-Noise, Low-IQ LDO datasheet (Rev. C) Sep. 02, 2016
Application notes LP5912-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 16, 2019
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
User guides LP5912DRV EVM User's Guide Dec. 15, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$79.00
Description

The LP5912EVM facilitates evaluation of the LP5912-1.8DRVR 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 (1.8V (...)

Features
  • Operating Input Voltage : 1.6V to 6.5V
  • Output Voltage : 1.8V ±2%
  • Jumper for user selectable Enable or Disable
  • Jumper for user selectable Power Good (PG) pull-up
  • Stable with Ceramic Capacitors ≥ 1μF
EVALUATION BOARDS Download
document-generic User guide
$79.00
Description

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 (...)

Features
  • Operating Input Voltage : 1.6V to 6.5V
  • Output Voltage : 3.3V ±2%
  • Jumper for user selectable Enable or Disable
  • Jumper for user selectable Power Good (PG) pull-up
  • Stable with Ceramic Capacitors ≥ 1μF

Design tools & simulation

SIMULATION MODELS Download
SNVMAI2.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAI3.ZIP (61 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAI7.ZIP (62 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAI8.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAI9.ZIP (62 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAJ0.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAJ1.ZIP (62 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAJ2.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAJ3.ZIP (59 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAJ4.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB42.ZIP (63 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB43.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB44.ZIP (63 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB45.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB46.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB47.ZIP (63 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Bidirectional DC-DC Converter Reference Design for 12-V/48-V Automotive Systems
TIDA-01168 — The TIDA-01168 reference design is a four-phase, bidirectional DC-DC converter development platform for 12-V/48-V automotive systems. The system uses two LM5170-Q1 current controllers and a TMS320F28027F microcontroller (MCU) for the power stage control. LM5170-Q1 subsystems use average current (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Efficient, low-heat, CISPR 25 class 5-compliant power reference design for infotainment display
PMP22030 — This reference design is focused on the power tree for an automotive infotainment display unit covering various power supply rails including two off-battery converters providing 5.0-V and 3.3-V, and intermediary system rails of 1.8-V and 1.1-V. The test results demonstrate high efficiency, low heat (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive 8 Channel Class D Amplifier with 2.1 MHz Switching Power Supply Reference Design
TIDA-00733 — TIDA-00733 is a reference design for an eight-channel, Class-D amplifier that is capable of driving 2-Ω loads and an off-battery step-down power supply with 5-V and  3.3-V outputs. The amplifier design provides audio inputs for each audio channel. A  high-performance audio (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DRV) 6 View options

Ordering & quality

Support & training

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