TPS7A33 Vin -3V to -36V, -1A, Ultra-Low-Noise, High-PSRR, Low-Dropout Linear Regulator | TI.com

TPS7A33 (ACTIVE)

Vin -3V to -36V, -1A, Ultra-Low-Noise, High-PSRR, Low-Dropout 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

View more

Parametrics Compare all products in Linear regulators (LDO)

 
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
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
TPS7A33 TPS7A30 TPS7A47 TPS7A49
Adjustable Output
Negative Output    
Adjustable Output
Negative Output    
Adjustable Output
Programmable Output    
Adjustable Output    
1     0.2     1     0.15    
-3     -3     36     36    
-36     -36     3     3    
-1.2     -1.2     34     33    
-33     -33     1.4     1.2    
VQFN | 20     MSOP-PowerPAD | 8
SON | 8    
VQFN | 20     MSOP-PowerPAD | 8
SON | 8    
Enable
Soft Start    
Enable
Soft Start    
Enable
Soft Start    
Enable
Soft Start    
1     1     1     1    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
31     48     33     48    
16     15     4     15    
2.70 | 1ku     1.50 | 1ku     2.10 | 1ku     1.10 | 1ku    
Catalog     Catalog     Catalog     Catalog    
Ceramic     Ceramic     Ceramic     Ceramic    
64     55     60     54    
2.5     2.5     2.5     2.5    
290     216     307     260    
0.21     0.05     0.58     0.06    
20VQFN: 25 mm2: 5 x 5 (VQFN | 20)     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)
See datasheet (SON)    
20VQFN: 25 mm2: 5 x 5 (VQFN | 20)     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)
See datasheet (SON)    

Design tool

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