TPS7A3401 Low-Dropout Linear Regulator

By Texas Instruments 136

TPS7A3401 Low-Dropout Linear Regulator

Texas Instruments' TPS7A3401 is a negative, high-voltage (-20 V), low-noise linear regulator capable of sourcing a maximum load of 200 mA. These linear regulators include a CMOS logic-level-compatible enable pin. Other features available include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions. The TPS7A3401 is designed using bipolar technology, and is ideal for instrumentation applications where clean voltage rails are critical to improve system performance. This design makes it a cost-effective choice to power operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other analog circuitry. In addition, the TPS7A3401 linear regulator is suitable for cost-effective, post DC/DC converter regulation.

Features Applications
  • Input voltage range: -3 V to -20 V
  • Noise: 80 µVRMS (10 Hz to 100 kHz)
  • Power-supply ripple rejection:
    50 dB (1 kHz) / ≥ 27 dB (10 Hz to 1 MHz)
  • Adjustable output: ~ -1.18 V to -18 V
  • Maximum output current: 200 mA
  • Dropout voltage: 500 mV at 100 mA
  • Stable with ceramic capacitors ≥ 2.2 µF
  • CMOS logic-level-compatible enable pin
  • Built-in, fixed, current-limit and thermal shutdown protection
  • Cost-effective supply rails for:
    • Op amps
    • DACs
    • ADCs
    • Other high-precision analog circuitry
  • Cost-effective post DC/DC converter regulation
  • Ripple filtering