TPS74701 Single-output 500mA LDO regulator, adjustable (0.8V to 3.6V), programmable soft start | TI.com

TPS74701 (ACTIVE) Single-output 500mA LDO regulator, adjustable (0.8V to 3.6V), programmable soft start

 

Recommended alternative parts

  • TPS745  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   500-mA LDO regulator with lower IQ in a 2-mm by 2-mm package
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Description

The TPS74701 low-dropout (LDO) linear regulator provides an easy-to-use, robust power management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and well-suited for powering many different types of processors and ASICs. The enable input and power good output allow easy sequencing with external regulators. This complete flexibility permits the user to configure a solution that meets the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements.

A precision reference and error amplifier deliver 2% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 2.2 μF, and is fully specified from –40°C to 125°C. The TPS74701 is offered in a small 3-mm × 3-mm SON-10 package for compatibility with the TPS74801.

For all available packages, see the orderable addendum at the end of the data sheet.

Features

  • VOUT Range: 0.8 V to 3.6 V
  • Ultralow VIN Range: 0.8 V to 5.5 V
  • VBIAS Range 2.7 V to 5.5 V
  • Low Dropout: 50 mV Typically at 500 mA, VBIAS = 5 V
  • Power Good (PG) Output Allows Supply Monitoring or Provides a Sequencing Signal for Other Supplies
  • 2% Accuracy Over Line, Load, and Temperature
  • Programmable Soft-Start Provides Linear Voltage Start-Up
  • VBIAS Permits Low VIN Operation With Good Transient Response
  • Stable With Any Output Capacitor ≥ 2.2 μF
  • Available in a Small 3-mm × 3-mm × 1-mm 10-Pin Package
  • APPLICATIONS
    • FPGA Applications
    • DSP Core and I/O Voltages
    • Post-Regulation Applications
    • Applications With Special Start-Up Time or Sequencing Requirements
    • Hot-Swap and Inrush Controls
  • question-circle

    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) 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)
    TPS74701 Order now Adjustable Output     0.5     5.5     0.8     3.6     0.8     VSON | 10     Enable
    Power Good
    Soft Start    
    1     -40 to 125     42     20     0.80 | 1ku     Catalog     27     2     50     1     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
    TPS74201 Order now Adjustable Output     1.5     5.5     0.8     3.5     0.8     DDPAK/TO-263 | 7
    VQFN | 20
    VQFN | 20    
    Enable
    Power Good
    Soft Start    
    1     -40 to 125
    -40 to 85    
    27     13     1.80 | 1ku     Catalog     52     1     55     3     7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
    20VQFN: 12 mm2: 3.5 x 3.5 (VQFN | 20)
    20VQFN: 25 mm2: 5 x 5 (VQFN | 20)    
    TPS74301 Order now Adjustable Output
    Tracking Output    
    1.5     5.5     0.8     3.6     0.8     DDPAK/TO-263 | 7
    VQFN | 20    
    Enable
    Power Good    
    1     -40 to 85     20     20     2.00 | 1ku     Catalog     45     1     55     3     7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
    20VQFN: 25 mm2: 5 x 5 (VQFN | 20)    
    TPS74401 Order now Adjustable Output     3     5.5     0.8     3.6     0.8     DDPAK/TO-263 | 7
    VQFN | 20
    VQFN | 20    
    Enable
    Power Good
    Soft Start