Product details

Output options Adjustable Output, Negative Output Iout (Max) (A) 1 Vin (Max) (V) -3 Vin (Min) (V) -36 Vout (Max) (V) -1.2 Vout (Min) (V) -33 Noise (uVrms) 16 Iq (Typ) (mA) 0.21 Thermal resistance θJA (°C/W) 31 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 64 Dropout voltage (Vdo) (Typ) (mV) 290 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Negative Output Iout (Max) (A) 1 Vin (Max) (V) -3 Vin (Min) (V) -36 Vout (Max) (V) -1.2 Vout (Min) (V) -33 Noise (uVrms) 16 Iq (Typ) (mA) 0.21 Thermal resistance θJA (°C/W) 31 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 64 Dropout voltage (Vdo) (Typ) (mV) 290 Operating temperature range (C) -40 to 125
VQFN (RGW) 20 25 mm² 5 x 5
  • 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

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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Technical documentation

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Type Title Date
* Data sheet TPS7A33 –36-V, 1-A, Ultralow-Noise Negative Voltage Regulator datasheet (Rev. D) PDF | HTML 18 Oct 2013
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Technical article Design a pre-tracking regulator, part 2: for a negative LDO 26 Apr 2019
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
Technical article Knock out the noise! Create a cleaner PLC design 26 Feb 2015

Design & development

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Evaluation board

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User guide: PDF
Simulation model

TPS7A3301 PSpice Transient Model

SBVM105.ZIP (32 KB) - PSpice Model
Simulation model

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Simulation model

TPS7A3301 TINA-TI Transient Spice Model

SBVM400.ZIP (5 KB) - TINA-TI Spice Model
Simulation model

TPS7A3301 Unencrypted PSpice Transient Model

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Test report: PDF
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Package Pins Download
VQFN (RGW) 20 View options

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