TPS786 Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators | TI.com

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

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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)
TPS786 Order now Adjustable Output
Fixed Output    
1.5     5.5     2.7     5.2     1.22     1.8
2.5
2.8
3
3.3    
DDPAK/TO-263 | 5
SON | 8
SOT-223 | 6    
Enable
Soft Start    
1     -40 to 125     41     48     1.52 | 1ku     Catalog     32     2     390     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)