1 Features
1• Input Voltage Range: 3 V to 36 V
• Noise:
– 12.7 μVRMS (20 Hz to 20 kHz)
– 15.4 μVRMS (10 Hz to 100 kHz)
• Power-Supply Ripple Rejection:
– 72 dB (120 Hz) power–
≥ 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 high•
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 ultralow•
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 μVRMS, 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.