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Texas Instruments TLV761 Linear Voltage Regulators

Texas Instruments TLV761 Linear Voltage Regulators improve the functionality of a traditional x1117 regulator (TLV1117/LM1117) with tighter output accuracy and low quiescent current (IQ). These regulators are pin-to-pin compatible with other fixed SOT-223 regulators. The TLV761 regulators' input voltage range is from 2.5V to 16V and provide an output voltage range from 0.8V to 13V to support various applications. These regulators are used in motor drives, smart meters, appliances, home theaters, and building security systems.

The wide bandwidth PSRR performance of the TLV761 is typically greater than 60dB at 1kHz and 40dB at 1MHz, which helps attenuate the switching frequency of an upstream DC/DC converter and minimizes post-regulator filtering. Additionally, the TLV761 regulators include an internal soft start feature to reduce inrush current during start-up, which can help save space and cost in a design by minimizing input capacitance. The TLV761 features a foldback current limit that limits the device's power dissipation during high-load current faults or shorting events.

Features

  • Pin-compatible with industry-standard LM1117 and TLV1117 (x1117) devices in select packages
  • 2.5V to 16V input voltage range VIN
  • Output voltage range VOUT
    • 0.8V to 13V (fixed, 100mV steps)
  • Output current up to 1A
  • Low quiescent current IQ
    • 60µA (typical, ~1.5µA in shutdown)
  • 1% output accuracy over line, load, and temperature
  • High PSRR (60dB at 1kHz, 40dB at 1MHz)
  • 500µs (typical) internal soft-start time 
  • Foldback current limiting and thermal protection
  • Stable with 1µF ceramic output capacitors
  • –40°C to +125°C temperature range
  • 4-pin, 6.50mm × 3.50mm SOT-223 package

Applications

  • Home theater and entertainment
  • Motor drives
  • HVAC and building security systems
  • Smart meters

Functional Block Diagram

Block Diagram - Texas Instruments TLV761 Linear Voltage Regulators

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Published: 2023-03-08 | Updated: 2025-02-27