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

Inventory: 3,626

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  |   View additional information for TPS731

Packaging information

Package | Pins SOT-23 (DBV) | 5
Operating temperature range (℃) Q (-40 to 125)
Package qty | Carrier: 250 | SMALL T&R
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Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • Stable With or Without Capacitors of All Types
  • Input Voltage Range of 1.7 V to 5.5 V
  • Ultralow Dropout Voltage: 30 mV Typical (150-mA
  • Excellent Load Transient Response–With or
    Without Optional Output Capacitor
  • New NMOS Topology Provides Low Reverse
    Leakage Current
  • Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy Over Line, Load, and
  • Less Than 1-µA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Minimum and
    Maximum Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.20 V to 5 V
    • Adjustable Outputs from 1.2 V to 5.5 V
    • Custom Outputs Available
    • Smart Grid and Energy
    • Building Automation
    • Set-Top Boxes
    • Medical Equipment
    • Test and Measurement
    • Point-of-Sale Terminals
    • Wireless Infrastructure

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The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: 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 TPS731xx 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.

Qty Price
1-99 $0.94
100-249 $0.72
250-999 $0.53
1,000+ $0.38

Alternative carriers

Part number TPS73132DBVR
Package qty | Carrier 3,000 | LARGE T&R
Custom reel may be available
Inventory 2,950
Qty | Price (USD) 1ku | $0.33