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TPS7A33
  • TPS7A33
  • TPS7A33
  • TPS7A33

TPS7A33

ACTIVE

1-A, high-PSRR, negative, adjustable low-dropout voltage regulator with enable

Texas Instruments TPS7A33 Product Info

1 April 2026 0

Parameters

Rating

Catalog

Vin (max) (V)

-3

Vin (min) (V)

-36

Iout (max) (A)

1

Output options

Adjustable Output, Negative Output

Vout (max) (V)

-1.2

Vout (min) (V)

-33

Fixed output options (V)

-1.2

Noise (µVrms)

16

PSRR at 100 KHz (dB)

64

Iq (typ) (mA)

0.21

Features

Enable, Soft start

Thermal resistance θJA (°C/W)

31

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Accuracy (%)

2.5

Dropout voltage (Vdo) (typ) (mV)

290

Operating temperature range (°C)

-40 to 125

Package

VQFN (RGW)-20-25 mm² 5 x 5

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 Temperature Range:
    –40°C to 125°C
  • 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 Temperature Range:
    –40°C to 125°C

Description

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 complementary metal oxide semiconductor (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.

In addition, the TPS7A33 family of linear regulators is suitable for post DC-DC converter regulation. By filtering out the output voltage ripple inherent to DC-DC switching conversion, maximum system performance is ensured in sensitive instrumentation, medical, test and measurement, audio, and RF applications.

For applications where positive and negative high-performance rails are required, consider the TPS7A4700 positive high-voltage, ultralow-noise, low-dropout linear regulator as well.

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 complementary metal oxide semiconductor (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.

In addition, the TPS7A33 family of linear regulators is suitable for post DC-DC converter regulation. By filtering out the output voltage ripple inherent to DC-DC switching conversion, maximum system performance is ensured in sensitive instrumentation, medical, test and measurement, audio, and RF applications.

For applications where positive and negative high-performance rails are required, consider the TPS7A4700 positive high-voltage, ultralow-noise, low-dropout linear regulator as well.

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