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

View more

Parametrics Compare all products in Linear regulators (LDO)

 
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)
TPS74901 TPS74201 TPS74301 TPS74401 TPS74701 TPS74801
Adjustable Output     Adjustable Output     Adjustable Output
Tracking Output    		 Adjustable Output     Adjustable Output     Adjustable Output    
3     1.5     1.5     3     0.5     1.5    
5.5     5.5     5.5     5.5     5.5     5.5    
0.8     0.8     0.8     0.8     0.8     0.8    
3.6     3.5     3.6     3.6     3.6     3.6    
0.8     0.8     0.8     0.8     0.8     0.8    
DDPAK/TO-263 | 7
VQFN | 20
VSON | 10    		 DDPAK/TO-263 | 7
VQFN | 20
VQFN | 20    		 DDPAK/TO-263 | 7
VQFN | 20    		 DDPAK/TO-263 | 7
VQFN | 20
VQFN | 20    		 VSON | 10     VQFN | 20
VSON | 10    
Enable
Power Good
Soft Start    		 Enable
Power Good
Soft Start    		 Enable
Power Good    		 Enable
Power Good
Soft Start    		 Enable
Power Good
Soft Start    		 Enable
Power Good
Soft Start    
1     1     1     1     1     1    
-40 to 125     -40 to 125
-40 to 85    		 -40 to 85     -40 to 125     -40 to 125     -40 to 125    
34     27     20     27     42     36    
20     13     20     13     20     20    
1.45 | 1ku     1.80 | 1ku     2.00 | 1ku     2.50 | 1ku     0.80 | 1ku     0.80 | 1ku    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
Ceramic     Cap Free
Ceramic    		 Cap Free
Ceramic    		 Cap Free
Ceramic    		 Ceramic     Ceramic    
28     52     45     50     27     28    
2     1     1     1     2     2    
120     55     55     115     50     60    
3     3     3     3     1     1    
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)    		 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)    		 7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
20VQFN: 25 mm2: 5 x 5 (VQFN | 20)    		 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)    		 10VSON: 9 mm2: 3 x 3 (VSON | 10)     20VQFN: 25 mm2: 5 x 5 (VQFN | 20)
10VSON: 9 mm2: 3 x 3 (VSON | 10)    

Design tool

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS74901