TPS7A49 Wide VIN, 150-mA, ultra-low-noise, high-PSRR low-dropout (LDO) linear regulator | TI.com

TPS7A49 (ACTIVE) Wide VIN, 150-mA, ultra-low-noise, high-PSRR low-dropout (LDO) linear regulator

 

Recommended alternative parts

  • TPS7A88  -  A dual-channel, low noise, 1-A LDO
  • TPS7A91  -  A single-channel, low-noise, 1-A LDO

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.

Features

  • 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)
    • ≥ 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

WEBENCH® Designer TPS7A49

  Min   Max Range
Vin  V 3.0 to 36.0V
Product Option
Vout  V
Iout  A ≤ 0.15A
Ambient Temp  °C -40.0 to 125.0°C

Parametrics

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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS7A49 Order now Adjustable Output     0.15     36     3     33     1.2     HVSSOP | 8
SON | 8    
Enable
Soft Start    
1     -40 to 125     48     15     1.10 | 1ku     Catalog     54     2.5     260     0.06     8HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 8)
8SON: 9 mm2: 3 x 3 (SON | 8)    
TPS7A30 Order now Adjustable Output
Negative Output    
0.2     -3     -36     -1.2     -33     HVSSOP | 8
SON | 8    
Enable
Soft Start    
1     -40 to 125     48     15     1.50 | 1ku     Catalog     55     2.5     216     0.05     8HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 8)
8SON: 9 mm2: 3 x 3 (SON | 8)    
TPS7A33 Order now Adjustable Output
Negative Output    
1     -3     -36     -1.2     -33     VQFN | 20     Enable
Soft Start    
1     -40 to 125     31     16     2.70 | 1ku     Catalog     64     2.5     290     0.21     20VQFN: 25 mm2: 5 x 5 (VQFN | 20)    
TPS7A47 Order now Adjustable Output
Programmable Output    
1     36     3     34     1.4     VQFN | 20     Enable
Soft Start    
1     -40 to 125     33     4     2.10 | 1ku     Catalog     60     2.5     307     0.58     20VQFN: 25 mm2: 5 x 5 (VQFN | 20)