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) 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
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) 22 Mar 2017
Technical article Knock out the noise! Create a cleaner PLC design 26 Feb 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DDC2256AEVM — DDC2256A 256-Channel Current-Input Analog-to-Digital Converter Evaluation Module

The DDC2256AEVM evaluation module  (EVM)  is  an  evaluation  kit  for the DDC2256A,  a  256-channel,  current  input,  24-bit analog-to-digital (A/D) converter. The EVM kit, comprised of a DUT board and a capture board, contains two DDC2256A (...)

Simulation model

TPS7A3301 PSpice Transient Model

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

TPS7A3301 TINA-TI Transient Reference Design

SBVM399.ZIP (12 KB) - TINA-TI Reference Design
Simulation model

TPS7A3301 TINA-TI Transient Spice Model

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

TPS7A3301 Unencrypted PSpice Transient Model

SBVM665.ZIP (0 KB) - PSpice Model
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TIDA-01371 — Programmable ±100-V, High-Current, Floating Linear Regulator Reference Design for Ultrasound Systems

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TIDA-00684 — High-Bandwidth Arbitrary Waveform Generator Reference Design: DC or AC coupled, High-Voltage output

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Reference designs

PMP8372 — 40V Dual 1A Power Module w/Low Noise LDOs Split-Rail (±5V) Output Voltages Reference Design

The PMP8372 design is optimized for small size and uses the TPS84250 step-down power module on the top- side with the TPS84259 negative output power module on the bottom-side to implement both positive and negative output voltages from a 12V/24V source. The output voltages can be adjusted from +/-3V (...)
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VQFN (RGW) 20 View options

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