1-A, 20-V, adjustable low-dropout voltage regulator with reverse current and voltage protection
Product details
Parameters
Package | Pins | Size
Features
- Optimized for Fast Transient Response
- Output Current: 1.0 A
- Dropout Voltage: 300 mV
- Low Noise: 45 µVRMS (10 Hz to 100 kHz)
- 1-mA Quiescent Current
- No Protection Diodes Needed
- Controlled Quiescent Current in Dropout
- Adjustable Output Voltage: 1.21 to 20 V
- Less Than 1-µA Quiescent Current in Shutdown
- Stable With 10-µF Output Capacitor
- Stable With Ceramic Capacitors
- Reverse-Battery Protection
- No Reverse Current
- Thermal Limiting
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Description
The TPS73801 is a low-dropout (LDO) regulator optimized for fast transient response. The device can supply 1.0 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the TPS73801 regulators have very low output noise, which makes them ideal for sensitive RF supply applications.
Output voltage range is from 1.21 to 20 V. The TPS73801 regulators are stable with output capacitors as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR, as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available as an adjustable device with a 1.21-V reference voltage. The TPS73801 regulators are available in the 6-pin TO-223 (DCQ) packages.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS73801 1.0-A Low-Noise Fast-Transient-Response Low-Dropout Regulator datasheet (Rev. C) | Jul. 30, 2015 |
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 | |
Application note | Hybrid Battery Charger with Load Control for Telecom Equipments (Rev. A) | May 09, 2018 | |
Technical articles | LDO basics: noise – part 1 | Jun. 14, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The Texas Instruments DEM-SOT223LDO demonstration module (DEM) helps designers evaluate the operation and performance of Texas Instruments low-dropout regulators (LDOs). This module is compatible with most positive output LDOs offered in the SOT223 (DCQ) package.
Reference designs
Design files
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download TIDA-010055 BOM Files.zip (310KB) -
download TIDA-010055 Assembly Files.zip (827KB) -
download TIDA-010055 Layer Plots.zip (2674KB) -
download TIDA-010055 CAD Files.zip (9038KB) -
download TIDA-010055 Gerber.zip (1157KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-223 (DCQ) | 6 | View options |
Ordering & quality
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