TPS7A30 200-mA, low-noise, high-PSRR, negative, adjustable low-dropout voltage regulator with enable | TI.com

TPS7A30
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200-mA, low-noise, high-PSRR, negative, adjustable low-dropout voltage regulator with enable

200-mA, low-noise, high-PSRR, negative, adjustable low-dropout voltage regulator with enable - TPS7A30
Datasheet
TPS7A30 –35-V, –200-mA, Ultralow-Noise, Negative Linear Regulator datasheet (Rev. D)
 

Recommended alternative parts

  • TPS7A33  -  TPS7A33 is a 1-A, low-noise, negative LDO.
  • TPS723  -  TPS723 is a low-noise, negative LDO available in the SOT23 package.

Description

The TPS7A30 series of devices are negative, high-voltage (–35 V), ultralow-noise (15.1 µVRMS, 72-dB PSRR) linear regulators that can source a maximum load of 200 mA.

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 features include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions.

The TPS7A30 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 TPS7A30 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 that require positive and negative high-performance rails, consider TI’s TPS7A49 family of positive high-voltage, ultralow-noise linear regulators.

Features

  • Input Voltage Range: –3 V to –35 V
  • Noise:
    • 14 µVRMS (20 Hz to 20 kHz)
    • 15.1 µVRMS (10 Hz to 100 kHz)
  • Power-Supply Ripple Rejection:
    • 72 dB (120 Hz)
    • ≥ 55 dB (10 Hz to 700 kHz)
  • Adjustable Output: –1.18 V to –33 V
  • Maximum Output Current: 200 mA
  • Dropout Voltage: 216 mV at 100 mA
  • Stable With Ceramic Capacitors ≥ 2.2 µF
  • CMOS Logic-Level-Compatible Enable Pin
  • Built-In, 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 TPS7A30

  Min   Max Range
Vin –  V -35.0 to -3.0V
Product Option
Vout  V
Iout  A ≤ 0.2A
Ambient Temp  °C -40.0 to 125.0°C

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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)
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     1.32 | 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     2.38 | 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     1.85 | 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     0.97 | 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)