TPS74901 Single-output 3A LDO regulator, adjustable (0.8V to 3.6V), programmable soft start | TI.com

TPS74901 (ACTIVE) Single-output 3A LDO regulator, adjustable (0.8V to 3.6V), programmable soft start

Single-output 3A LDO regulator, adjustable (0.8V to 3.6V), programmable soft start - TPS74901
Datasheet
TPS74901 3-A Low Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. I)
 

Recommended alternative parts

  • TPS7A84  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   TPS7A84 is the next-generation version of this device with lower noise.

Description

The TPS74901 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 during 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 ≥ 2.2 µF, and the device is fully specified from –40°C to 125°C. The TPS74901 is offered in a small (3 mm × 3 mm) VSON package and a small (5-mm × 5-mm) VQFN package, yielding a highly compact total solution size. The device is also available in a DDPAK-7 package.

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: 120 mV (Typical) at 3 A
  • Power-Good (PG) Output Allows Supply Monitoring or Provides a Sequencing Signal for Other Supplies
  • 2% Accuracy Over Line, Load, and Temperature
  • Adjustable Start-Up In-Rush Control
  • VBIAS Permits Low VIN Operation With Good Transient Response
  • Stable with Any Output Capacitor ≥ 2.2 µF
  • Packages:
    • Small, 3-mm × 3-mm × 1-mm VSON
    • 5-mm × 5-mm × 1-mm VQFN and DDPAK-7
  • Active High Enable
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WEBENCH® Designer TPS74901

  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

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Parametrics

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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)
TPS74901 Order now Adjustable Output     3     5.5     0.8     3.6     0.8     DDPAK/TO-263 | 7
VQFN | 20
VSON | 10    		 Enable
Power Good
Soft Start    		 1     -40 to 125     34     20     1.45 | 1ku     Catalog     28     2     120     3     7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
20VQFN: 25 mm2: 5 x 5 (VQFN | 20)
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    		 1     -40 to 125     27     13     2.50 | 1ku     Catalog     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)    
TPS74701 Order now Adjustable Output     0.5     5.5     0.8     3.6     0.8