TPS7A30 Datasheet, PDF (1/40 Pages) Texas Instruments – TPS7A30 –35-V, –200-mA, Ultralow-Noise, Negative Linear Regulator

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
TPS7A30
SBVS125D – AUGUST 2010 – REVISED JUNE 2015
TPS7A30 –35-V, –200-mA, Ultralow-Noise, Negative Linear Regulator
1 Features
•1 Input Voltage Range: –3 V to –35 V
• Noise:
– 14 μV_RMS (20 Hz to 20 kHz)
– 15.1 μV_RMS (10 Hz to 100 kHz)
• Power-Supply Ripple Rejection:
– 72 dB (120 Hz)
– ≥ 55 dB (10 Hz to 700 kHz)
• Adjustable Output: –1.18 V to –33 V
• Maximum Output Current: 200 mA
• Dropout Voltage: 216 mV at 100 mA
• Stable with Ceramic Capacitors ≥ 2.2 μF
• CMOS Logic-Level-Compatible Enable Pin
• Built-In, Fixed, Current Limit and Thermal
Shutdown Protection
• Packages: 8-Pin HVSSOP PowerPAD™ and
3-mm × 3-mm VSON
• Operating Temperature Range:
–40°C to 125°C
2 Applications
• Supply Rails for Operational Amplifiers, DACs,
ADCs, and Other High-Precision Analog Circuitry
• Audio
• Post DC-DC Converter Regulation and
Ripple Filtering
• Test and Measurement
• RX, TX, and PA Circuitry
• Industrial Instrumentation
• Base Stations and Telecom Infrastructure
• –12-V and –24-V Industrial Buses
3 Description
The TPS7A30 series of devices are negative, high-
voltage (–35 V), ultralow-noise (15.1 μV_RMS, 72-dB
PSRR) linear regulators that can source a maximum
load of 200 mA.
These linear regulators include a CMOS logic-level-
compatible enable pin and capacitor-programmable
soft-start function that allows for customized power-
management schemes. Other features include built-in
current limit and thermal shutdown protection to
safeguard the device and system during fault
conditions.
The TPS7A30 family is designed using bipolar
technology, and is ideal for high-accuracy, high-
precision instrumentation applications where clean
voltage rails are critical to maximize system
performance. This design makes the device an
excellent choice to power operational amplifiers,
analog-to-digital converters (ADCs), digital-to-analog
converters (DACs), and other high-performance
analog circuitry.
In addition, the TPS7A30 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 provided in sensitive instrumentation, test and
measurement, audio, and RF applications.
For applications that require positive and negative
high-performance rails, consider TI’s TPS7A49 family
of positive high-voltage, ultralow-noise linear
regulators.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A30
HVSSOP (8)
VSON (8)
3.00 mm × 3.00 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Post DC-DC Converter Regulation for High-Performance Analog Circuitry
+18V
-18V
IN OUT
+15V
TPS7A49
EN GND
IN OUT
-15V
TPS7A30
EN GND
EVM
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.