Low-Dropout Linear Regulator, High PSRR


Low-Dropout Linear Regulator, High PSRR

Low Dropout Linear Regulator, High PSRR

The TPS7A33 series of linear regulators are negative voltage (–36 V), ultralow-noise (16 µVRMS, 72 dB PSRR) linear regulators capable of sourcing a maximum load of 1 A.

The TPS7A33 series include a CMOS logic-level-compatible enable pin (EN) to allow for user-customizable power management schemes. Other features available include built-in current limit and thermal shutdown features to protect the device and system during fault conditions.

The TPS7A33 family is designed using bipolar technology primarily for high-accuracy, high-precision instrumentation applications, where clean voltage rails are critical to maximize system performance. This feature makes it ideal to power operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.

Device Uses
  • Supply Rails for Op Amps, DACs, ADCs, and Other High-Precision Analog Circuitry
  • Audio
  • Post DC/DC Converter Regulation and Ripple Filtering
  • Test and Measurement
  • Medical
  • Industrial Instrumention
  • Base Stations and Telecom Infrastrucure
  • 12-V and 24-V Industrial Buses
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Features
  • Input Voltage Range: –3 V to –36 V
  • Noise:
  • 16 µVRMS (10 Hz to 100 kHz)
  • Power-Supply Ripple Rejection:
  • 72 dB (10 kHz)
  • Adjustable Output: –1.18 V to –33 V
  • Maximum Output Current: 1 A
  • Stable with Ceramic Capacitors ≥ 10 µF
  • Built-In Current-Limit and Thermal Shutdown Protection
  • Available in an External Heatsink-Capable, High Thermal Performance TO-220 Package
  • Operating Tempature Range: –40°C to +125°C

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