3-A, low-VIN (0.8-V), adjustable ultra-low-dropout voltage regulator with power good & enable
Product details
Parameters
Package | Pins | Size
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
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS74901 3-A Low Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. I) | May 03, 2016 |
Application note | LDO Noise Demystified (Rev. B) | Aug. 18, 2020 | |
Application note | A Topical Index of TI LDO Application Notes (Rev. F) | Jun. 27, 2019 | |
Technical articles | LDO basics: capacitor vs. capacitance | Aug. 01, 2018 | |
Technical articles | LDO Basics: Preventing reverse current | Jul. 25, 2018 | |
Technical articles | LDO basics: introduction to quiescent current | Jun. 20, 2018 | |
Selection guide | Low Dropout Regulators Quick Reference Guide (Rev. P) | Mar. 21, 2018 | |
Application note | LDO PSRR Measurement Simplified (Rev. A) | Aug. 09, 2017 | |
Technical articles | LDO basics: noise – part 1 | Jun. 14, 2017 | |
Application note | Q2 2009 Issue Analog Applications Journal | May 01, 2009 | |
Application note | Taming linear-regulator inrush currents | May 01, 2009 | |
User guide | TPS74901EVM-210 (Rev. B) | Jul. 24, 2008 | |
User guide | TPS74901EVM-210 | Apr. 14, 2007 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS74901EVM-210 facilitates evaluation of the TPS74901 low-dropout linear regulator IC.
These regulators require a low-power bias voltage, VBIAS, and a power input voltage, VIN. The regulator is capable of providing output voltages down to 0.8 V, output currents up to 3 A and has an (...)
Features
- Soft-Start pin provides a linear startup with ramp time set by external capacitor
- 2% 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: 120 mV at 3.0 A (typical)
- Stable with any output capacitor (...)
Design tools & simulation
Reference designs
This reference design describes a wideband RF (...)
Design files
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download TIDA-00431 BOM.pdf (228KB) -
download TIDA-00431 Assembly Drawing.pdf (1080KB) -
download TIDA-00431 PCB.pdf (7565KB) -
download TIDA-00431 CAD Files.zip (2546KB) -
download TIDA-00431 Gerber.zip (814KB)
Design files
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download TIDA-01017 BOM.pdf (69KB) -
download TIDA-01017 Assembly Drawing.pdf (1640KB) -
download TIDA-01017 PCB.pdf (2736KB) -
download TIDA-01017 CAD Files.zip (10462KB) -
download TIDA-01017 Gerber.zip (713KB)
Design files
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download TIDA-01015 BOM.pdf (69KB) -
download TIDA-01015 Assembly Drawing.pdf (1635KB) -
download TIDA-01015 PCB.pdf (2245KB) -
download TIDA-01015 CAD Files.zip (10462KB) -
download TIDA-01015 Gerber.zip (713KB)
Design files
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download TIDA-00826 Gerber.zip (1121KB) -
download TIDA-00826 BOM.pdf (283KB) -
download TIDA-00826 PCB.pdf (28400KB)
Design files
-
download TIDA-00432 BOM.pdf (140KB) -
download TIDA-00432 Gerber.zip (712KB)
Design files
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download TIDA-00359 BOM.pdf (61KB) -
download TIDA-00359 Assembly Drawing.pdf (1261KB) -
download TIDA-00359 PCB.pdf (6792KB) -
download TIDA-00359 Altium.zip (10461KB) -
download TIDA-00359 CAD Files.zip (3547KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
DDPAK/TO-263 (KTW) | 7 | View options |
VQFN (RGW) | 20 | View options |
VSON (DRC) | 10 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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