TPS7A49_15 Datasheet, PDF (1/34 Pages) Texas Instruments – TPS7A49 36-V, 150-mA, Ultralow-Noise, Positive Linear Regulator

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TPS7A49
SBVS121E – AUGUST 2010 – REVISED MAY 2015
TPS7A49 36-V, 150-mA, Ultralow-Noise, Positive Linear Regulator
1 Features
•1 Input Voltage Range: 3 V to 36 V
• Noise:
– 12.7 μV_RMS (20 Hz to 20 kHz)
– 15.4 μV_RMS (10 Hz to 100 kHz)
• Power-Supply Ripple Rejection:
– 72 dB (120 Hz)
– ≥ 52 dB (10 Hz to 400 kHz)
• Adjustable Output: 1.194 V to 33 V
• Output Current: 150 mA
• Dropout Voltage: 260 mV at 100 mA
• Stable with Ceramic Capacitors ≥ 2.2 μF
• CMOS Logic-Level-Compatible Enable Pin
• 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 Op Amps, 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
3 Description
The TPS7A49 series of devices are positive, high-
voltage (36 V), ultralow-noise (15.4 μV_RMS, 72-dB
PSRR) linear regulators that can source a 150-mA
load.
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 available features
include built-in current limit and thermal shutdown
protection to safeguard the device and system during
fault conditions.
The TPS7A49 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 TPS7A49 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 where positive and negative high-
performance rails are required, consider TI’s
TPS7A30xx family of negative high-voltage, ultralow-
noise linear regulators as well.
PART NUMBER
TPS7A49
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
HVSSOP PowerPAD (8) 3.00 mm × 3.00 mm
VSON (8)
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.