LP5912-Q1

ACTIVE

Automotive, 500-mA low-noise low-IQ low-dropout voltage regulator with reverse current protection

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, 1.2, 1.5, 1.8, 2.8, 3, 3.3 Noise (µVrms) 12 Iq (typ) (mA) 0.03 Thermal resistance θJA (°C/W) 71 TI functional safety category Functional Safety-Capable Rating Automotive 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, 1.2, 1.5, 1.8, 2.8, 3, 3.3 Noise (µVrms) 12 Iq (typ) (mA) 0.03 Thermal resistance θJA (°C/W) 71 TI functional safety category Functional Safety-Capable Rating Automotive 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
  • 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
  • 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

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.

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
* Data sheet LP5912-Q1 Automotive 500-mA Low-Noise, Low-IQ LDO datasheet (Rev. C) PDF | HTML 02 Sep 2016
Functional safety information LP5912-Q1 Functional Safety FIT Rate and Failure Mode Distribution 16 Dec 2019
Technical article Power over coax: A design guide for automotive applications PDF | HTML 26 Aug 2016
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

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User guide: PDF
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Simulation model

LP5912 0P9 PSpice Transient Model

SNVMAJ1.ZIP (62 KB) - PSpice Model
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LP5912 0P9 Unencrypted PSpice Transient Model

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

LP5912 1P1 PSpice Transient Model

SNVMB44.ZIP (63 KB) - PSpice Model
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LP5912 1P1 Unencrypted PSpice Transient Model

SNVMB43.ZIP (3 KB) - PSpice Model
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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
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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
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LP5912 1P8 Unencrypted PSpice Transient Model

SNVMAJ4.ZIP (3 KB) - PSpice Model
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LP5912 1P8_PSpice Transient Model

SNVMAI3.ZIP (61 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
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LP5912 3P3 PSpice Transient Model

SNVMAJ3.ZIP (59 KB) - PSpice Model
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LP5912 3P3 Unencrypted PSpice Transient Model

SNVMAJ2.ZIP (3 KB) - PSpice Model
Reference designs

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