TPS7A3301 Datasheet, PDF (1/26 Pages) Texas Instruments – –36-V, –1-A, Ultralow-Noise Negative Voltage Regulator

TPS7A33
www.ti.com
SBVS169B – DECEMBER 2011 – REVISED MARCH 2012
–36-V, –1-A, Ultralow-Noise Negative Voltage Regulator
FEATURES
1
•2 Input Voltage Range: –3 V to –36 V
• Noise:
– 16 μV_RMS (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
APPLICATIONS
• Supply Rails for Op Amps, DACs, ADCs, and
Other High-Precision Analog Circuitry
• Audio
• Post DC/DC Converter Regulation and Ripple
Filtering
• Test and Measurement
• Medical
• Industrial Instrumentation
• Base Stations and Telecom Infrastructure
• 12-V and 24-V Industrial Buses
KC PACKAGE
TO-220-7
(Top View)
RGW PACKAGE
5-mm ´ 5-mm QFN-20
(Top View)
DESCRIPTION
The TPS7A33 series of linear regulators are negative
voltage (–36 V), ultralow-noise (16 μV_RMS, 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.
+18 V
-18 V
IN OUT
+15 V
+LDO
EN GND
IN OUT
TPS7A33 ^{-15 V}
-LDO
EN GND
EVM
OUT 1
NC 2
15 IN
14 NR/SS
Typical Application: Post DC/DC Converter
Regulation for High-Performance Analog Circuitry
1234567
FB 3
NC 4
GND
13 EN
12 NC
NC 5
11 NC
EN IN NC FB
NR/SS GND OUT
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.
All trademarks are the property of their respective owners.
2
UNLESS OTHERWISE NOTED this document contains
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.
Copyright © 2011–2012, Texas Instruments Incorporated