Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators - TPS786

TPS786 (ACTIVE)

Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators

 

Description

The TPS786 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, SOT223-6 and DDPAK-5 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, 390 mV at 1.5 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 TPS78630 exhibits approximately 48 µVRMS of output voltage at 3-V output noise 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 the fast response time.

Features

  • 1.5-A Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2 V to 5.5 V)
    Output Versions
  • High PSRR (49 dB at 10 kHz)
  • Ultralow Noise (48 µVRMS, TPS78630)
  • Fast Start-Up Time (50 µs)
  • Stable With a 1-µF Ceramic Capacitor
  • Excellent Load and Line Transient Response
  • Very Low Dropout Voltage (390 mV at Full Load,
    TPS78630)
  • 3 × 3 SON PowerPAD, 6-Pin SOT223 and 5-Pin
    DDPAK Package
  • APPLICATIONS
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth®, Wireless LAN
    • Cellular and Cordless Telephones
    • Handheld Organizers, PDAs

Bluetooth Is a trademark of Texas Instruments,

View more

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
TPS786
1.5   
Adjustable Output
Fixed Output   
2.7   
5.5   
1.8
2.5
2.8
3
3.3   
1.22   
5.2   
0.26   
390   
2   
48   
32   
Ceramic   
Catalog   
-40 to 125   
5DDPAK/TO-263
6SOT-223
8SON   

WEBENCH® Designer TPS786

  Min   Max Range
Vin  V 2.7 to 5.5V
Product Option
Vout  V
Iout  A ≤ 1.5A
Ambient Temp  °C -40.0 to 125.0°C