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Linear & low-dropout (LDO) regulators

TPS732

ACTIVE

250-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

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Data sheet

TPS732

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 5.5 Vin (min) (V) 1.7 Vout (max) (V) 5.5 Vout (min) (V) 1.2 Fixed output options (V) 1.3, 1.5, 1.6, 1.8, 1.9, 2.5, 3, 3.3, 5 Noise (µVrms) 30 Iq (typ) (mA) 0.4 Thermal resistance θJA (°C/W) 53 Rating Catalog Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Reverse Current Protection Accuracy (%) 1 PSRR at 100 KHz (dB) 32 Dropout voltage (Vdo) (typ) (mV) 40 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 5.5 Vin (min) (V) 1.7 Vout (max) (V) 5.5 Vout (min) (V) 1.2 Fixed output options (V) 1.3, 1.5, 1.6, 1.8, 1.9, 2.5, 3, 3.3, 5 Noise (µVrms) 30 Iq (typ) (mA) 0.4 Thermal resistance θJA (°C/W) 53 Rating Catalog Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Reverse Current Protection Accuracy (%) 1 PSRR at 100 KHz (dB) 32 Dropout voltage (Vdo) (typ) (mV) 40 Operating temperature range (°C) -40 to 125
SOT-223 (DCQ) 6 45.89 mm² 6.5 x 7.06 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 VSON (DRB) 8 9 mm² 3 x 3
  • Stable with No Output Capacitor or Any Value or
    Type of Capacitor
  • Input Voltage Range: 1.7 V to 5.5 V
  • Ultralow Dropout Voltage: 40 mV Typical at
    250 mA
  • Excellent Load Transient Response–With or
    Without Optional Output Capacitor
  • NMOS Topology Provides Low Reverse Leakage
    Current
  • Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy (Line, Load, and
    Temperature)
  • Less Than 1-µA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Min and Max
    Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.2 V to 5 V
    • Adjustable Outputs from 1.2 V to 5.5 V
    • Custom Outputs Available
  • APPLICATIONS
    • Portable and Battery-Powered Equipment
    • Post-Regulation for Switching Supplies
    • Noise-Sensitive Circuitry such as VCOs
    • Point-of-Load Regulation for DSPs, FPGAs,
      ASICs, and Microprocessors

All other trademarks are the property of their respective owners
  • Stable with No Output Capacitor or Any Value or
    Type of Capacitor
  • Input Voltage Range: 1.7 V to 5.5 V
  • Ultralow Dropout Voltage: 40 mV Typical at
    250 mA
  • Excellent Load Transient Response–With or
    Without Optional Output Capacitor
  • NMOS Topology Provides Low Reverse Leakage
    Current
  • Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy (Line, Load, and
    Temperature)
  • Less Than 1-µA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Min and Max
    Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.2 V to 5 V
    • Adjustable Outputs from 1.2 V to 5.5 V
    • Custom Outputs Available
  • APPLICATIONS
    • Portable and Battery-Powered Equipment
    • Post-Regulation for Switching Supplies
    • Noise-Sensitive Circuitry such as VCOs
    • Point-of-Load Regulation for DSPs, FPGAs,
      ASICs, and Microprocessors

All other trademarks are the property of their respective owners

The TPS732 family of low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732 uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µVRMS with 0.1-µF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

The TPS732 family of low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732 uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µVRMS with 0.1-µF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.
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Technical documentation

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Type Title Date
* Data sheet TPS732xx Capacitor-Free, NMOS, 250-mA Low-Dropout Regulator With Reverse Current Protection datasheet (Rev. P) PDF | HTML 17 Dec 2015
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Technical article LDO Basics: Thermals – How hot is your application? PDF | HTML 20 Sep 2017
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
User guide TPS73x01DRBEVM-518 User's Guide 13 Aug 2009
User guide DEM-SOT223LDO Demonstration Fixture 15 Oct 2003
More literature DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag) 14 Feb 2001

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