TPS796 Ultralow-Noise, High PSRR, Fast, RF, 1-A Low-Dropout Linear Regulators | TI.com

TPS796 (ACTIVE)

Ultralow-Noise, High PSRR, Fast, RF, 1-A Low-Dropout Linear Regulators

 

Recommended alternative parts

  • TPS7A91  -  TPS7A91 is the next-generation version of this device with lower noise and lower dropout.
  • TPS7A8101  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   TPS7A8101 is the next-generation version of this device with lower noise.

Description

The TPS796 family of low-dropout (LDO) low-power linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow-noise, fast start-up, and excellent line and load transient responses in small outline, 3 × 3 VSON, SOT223-6, and TO-263 packages. Each device in the family is stable with a small, 1-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 250 mV at 1 A). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming very low quiescent current (265 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS79630 exhibits approximately 40 µVRMS of output voltage noise at 3.0-V output, with a 0.1-µF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR, low noise features, and need fast response time.

Features

  • 1-A Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2 V to 5.5 V)
    Versions
  • High PSRR (53 dB at 10 kHz)
  • Ultralow-Noise (40 µVRMS, TPS79630)
  • Fast Start-Up Time (50 µs)
  • Stable With a 1-µF Ceramic Capacitor
  • Excellent Load and Line Transient Response
  • Very Low Dropout Voltage (250 mV at Full Load,
    TPS79630)
  • 3 × 3 VSON PowerPAD™, SOT223-6, and
    TO-263 Packages

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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)
Fixed output options (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 @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
TPS796
Adjustable Output
Fixed Output    
1    
5.5    
2.7    
5.4    
1.2    
1.3
1.8
2.5
2.8
3
3.3
5    
DDPAK/TO-263 | 5
SON | 8
SOT-223 | 6    
Enable    
1    
-40 to 125
-40 to 85    
25    
42    
1.29 | 1ku    
Catalog    
Ceramic    
42    
2    
220    
0.26    
5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
See datasheet (SON)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)    

Design tool

WEBENCH® Designer TPS796

  Min   Max Range
Vin  V 2.7 to 5.5V
Product Option
Vout  V
Iout  A ≤ 1.0A
Ambient Temp  °C -40.0 to 125.0°C