TPS7A33 -3-V to -36-V VIN, 1-A output current, ultra-low-noise, high-PSRR, LDO linear regulator | TI.com

TPS7A33 (ACTIVE) -3-V to -36-V VIN, 1-A output current, ultra-low-noise, high-PSRR, LDO linear regulator

 

Description

The TPS7A33 series of linear regulators are negative voltage (–36 V), ultralow-noise (16-µVRMS, 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.

For applications where positive and negative high-performance rails are required, consider the TPS7A4700 positive high-voltage, ultralow-noise, low-dropout linear regulator as well.

Features

  • Input Voltage Range: –3 V to –36 V
  • Noise:
    • 16 µVRMS (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

WEBENCH® Designer TPS7A33

  Min   Max Range
Vin  V -36.0 to -3.0V
Product Option
Vout  V
Iout  A ≤ 1.0A
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)
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)    
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)    
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)    
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)