1 Features

1• 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

2 Applications

• Supply Rails for Operational Amplifiers, DACs,

ADCs, and Other High-Precision Analog Circuitry

• Audio DC•

Post DC-DC Converter Regulation and Ripple

Filtering

• Test and Measurement

• Medical

• Industrial Instrumentation

• Base Stations and Telecom Infrastructure low•

12-V and 24-V Industrial Buses

3 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.