Ultralow-Noise, High-PSRR, Fast, RF, 500-mA Low-Dropout Linear Regulators - TPS795

TPS795 (ACTIVE)

Ultralow-Noise, High-PSRR, Fast, RF, 500-mA Low-Dropout Linear Regulators

 

Recommended alternative parts

  • LP5912  -  The LP5912 is a 500mA fixed output voltage low IQ, low noise LDO
  • TPS7A90  -  TPS7A90 is 500mA, low noise (4.7uVrms) LDO in a small package (2.5 mm x 2.5mm)

Description

The TPS795 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, 6-pin SOT-223 and 3-mm × 3-mm WSON 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, 110 mV at 500 mA). 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 TPS79530 device exhibits approximately 33 µVRMS of output voltage noise at 3-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 and low-noise features, as well as from the fast response time.

Features

  • 500-mA Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2-V to 5.5-V)
    Versions
  • High PSRR (50 dB at 10 kHz)
  • Ultralow Noise (33 µVRMS, TPS79530)
  • Fast Start-Up Time (50 µs)
  • Stable With a 1-µF Ceramic Capacitor
  • Excellent Load and Line Transient Response
  • Low Dropout Voltage (110 mV at Full Load,
    TPS79530)
  • 6-Pin SOT-223 and 3-mm × 3-mm WSON
    Packages
  • APPLICATIONS
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth®, Wireless LAN
    • Cellular and Cordless Telephones
    • Handheld Organizers, PDAs

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Parametrics Compare all products in Single Channel LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
TPS795
0.5   
Adjustable Output
Fixed Output   
2.7   
5.5   
1.6
1.8
2.5
3
3.3   
1.2   
5.4   
0.26   
110   
2   
33   
40   
Ceramic   
Catalog   
-40 to 125   
6SOT-223
8SON   

WEBENCH® Designer TPS795

  Min   Max Range
Vin  V 2.7 to 5.5V
Product Option
Vout  V
Iout  A ≤ 0.5A
Ambient Temp  °C -40.0 to 125.0°C