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

  • TLV759P  -  1-A LDO regulator with lower IQ and 1% accuracy in a 2-mm by 2-mm package
  • TPS7A91  -  Next-generation version of the TPS796 with lower noise and lower dropout
  • TPS7A8101  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Next-generation version of this the TPS796 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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Thermal calculator

Estimate the LDO IC temperature at your design conditions:
Part number
    Range
Vin  V
Vout  V
Iout  A
Ambient temp  °C
Package option
Voltage option
PCB construction
Enhanced Thermal = single thermal spreading plane of 1 oz Cu
Minimum Thermal = single thermal spreading plane of 1/2 oz Cu
View the user guide for more details.

Junction temperature vs. PCB copper coverage area
These are estimated power dissipation and thermal results.
Care must be taken to ensure that device junction temperature
does not exeed the maximum ratings as indicated in the datasheet.

This calculator uses the PCB copper area to estimate the device junction temperature. See notes on usage and calculation method.

Parametrics

Compare all products in Linear regulators (LDO) Email Download to Excel
Part number Order 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 PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS796 Order now 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     42     2     220     0.26     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
8SON: 9 mm2: 3 x 3 (SON | 8)
6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)