+LDO

IN

+18 V

OUT

EN

GND

-

18 V

TPS7A33

-

LDO

IN

OUT

EN

GND

EVM

+15 V

-

15 V

GND OUT

NR/SS

1

2

3

4

5

6

IN

NC

EN

FB

7

KC PACKAGE

TO-220-7

(Top View)

OUT

NC

FB

NC

NC

IN

NR/SS

EN

NC

NC

GND

1

2

3

4

5

15

14

13

12

11

RGW PACKAGE

5-mm

5-mm QFN-20

(Top View)

´

TPS7A33

www.ti.com

SBVS169B – DECEMBER 2011 – REVISED MARCH 2012

–36-V, –1-A, Ultralow-Noise Negative Voltage Regulator

1

FEATURES

DESCRIPTION

The TPS7A33 series of linear regulators are negative

2

•

Input Voltage Range: –3 V to –36 V

voltage (–36 V), ultralow-noise (16

•

Noise:

PSRR) linear regulators capable of sourcing a

–

16

maximum load of 1 A.

•

Power-Supply Ripple Rejection:

The TPS7A33 series include a complementary metal

–

72 dB (10 kHz)

oxide semiconductor (CMOS) logic-level-compatible

enable pin (EN) to allow for user-customizable power

•

Adjustable Output: –1.18 V to –33 V

management

schemes.

Other

features

available

•

Maximum Output Current: 1 A

include built-in current limit and thermal shutdown

•

Stable with Ceramic Capacitors

≥ 10 μF

features to protect the device and system during fault

conditions.

•

Built-In Current-Limit and Thermal Shutdown

Protection

The TPS7A33 family is designed using bipolar

technology primarily for high-accuracy, high-precision

•

Available in an External Heatsink-Capable,

instrumentation applications, where clean voltage

High Thermal Performance TO-220 Package

rails are critical to maximize system performance.

•

Operating Temperature Range:

This feature makes it ideal to power operational

–40°C to +125°C

amplifiers,

analog-to-digital

converters

(ADCs),

digital-to-analog converters (DACs), and other high-

APPLICATIONS

performance analog circuitry.

•

Supply Rails for Op Amps, DACs, ADCs, and

In addition, the TPS7A33 family of linear regulators is

Other High-Precision Analog Circuitry

suitable for post dc-dc converter regulation. By

filtering out the output voltage ripple inherent to dc-dc

•

Audio

switching conversion, maximum system performance

•

Post DC/DC Converter Regulation and Ripple

is ensured in sensitive instrumentation, medical, test

Filtering

and measurement, audio, and RF applications.

•

Test and Measurement

•

Medical

•

Industrial Instrumentation

•

Base Stations and Telecom Infrastructure

•

12-V and 24-V Industrial Buses

Typical Application: Post DC/DC Converter

Regulation for High-Performance Analog Circuitry

NOTE: RGW package is product preview.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2011–2012, Texas Instruments Incorporated

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.