TPS74401 Single-output 3A LDO regulator, adj (0.8V to 3.3V), fast transient response, programmable soft start | TI.com

TPS74401 (ACTIVE) Single-output 3A LDO regulator, adj (0.8V to 3.3V), fast transient response, programmable soft start

 

Recommended alternative parts

  • TPS7A84A  -  The TPS7A84A is a 3A LDO with lower noise 4.4 uVrms, improved accuracy 0.75% and wider VOUT range (0.8 V to 5.15V)

Special note

Use two TPS74401’s in parallel and source up to 6A using this verified TI Design TIDA-00270.

Description

The TPS74401 low-dropout (LDO) linear regulators provide an easy-to-use robust power-management solution for a wide variety of applications. The 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 application-specific integrated circuits (ASICs). The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility lets the user configure a solution that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with specific start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. The TPS74401 family of LDOs is stable without an output capacitor or with ceramic output capacitors. The device family is fully specified from TJ = –40°C to 125°C. The TPS74401 is offered in two 20-pin small VQFN packages (a 5-mm × 5-mm RGW and a
3.5-mm × 3.5-mm RGR package), yielding a highly compact total solution size. For applications that require additional power dissipation, the DDPAK (KTW) package is also available.

Features

  • Input Voltage Range: 1.1 V to 5.5 V
  • Soft-Start (SS) Pin Provides a Linear Startup With Ramp Time Set by External Capacitor
  • 1% Accuracy Over Line, Load, and Temperature
  • Supports Input Voltages as Low as 0.9 V With External Bias Supply
  • Adjustable Output: 0.8 V to 3.6 V
  • Ultra-Low Dropout: 115 mV at 3.0 A (typical)
  • Stable With Any or No Output Capacitor
  • Excellent Transient Response
  • Open-Drain Power-Good (VQFN Only)
  • Packages: 5-mm × 5-mm × 1-mm VQFN (RGW), 3.5-mm × 3.5-mm VQFN (RGR), and DDPAK

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WEBENCH® Designer TPS74401

  Min   Max Range
Vin  V 0.8 to 5.5V
Vout  V 0.8 to 3.6V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 125°C

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 Output capacitor type PSRR @ 100 KHz (dB) Accuracy (%) Vdo (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
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    
1     -40 to 125     27     13     2.50 | 1ku     Catalog     Cap Free
Ceramic    
50     1     115     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)    
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     Cap Free
Ceramic    
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     Cap Free
Ceramic    
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)    
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     Ceramic     27     2     50     1     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS74801 Order now Adjustable Output     1.5