150-mA, 33-V, low-noise, high-PSRR, dual-channel positive & negative low-dropout voltage regulator
Product details
Parameters
Package | Pins | Size
Features
- Positive and Negative LDOs in One Package
- Wide Input Voltage Range: ±3.3 V to ±33 V
- Wide Output Voltage Range:
- Positive Range: 1.2 V to 30 V
- Negative Range: –30 V to 0 V
- Output Current: 150 mA per Channel
- Monotonic Start-Up Tracking
- High Power-Supply Rejection Ratio (PSRR):
- 69 dB (120 Hz)
- ≥ 50 dB (10 Hz to 2 MHz)
- Output Voltage Noise: 21 µVRMS (10 Hz–100 kHz)
- Buffered 1.2-V Reference Output
- Stable With a 10-µF or Larger Output Capacitor
- Single Positive-Logic Enable
- Adjustable Soft-Start In-Rush Control
- 3-mm × 3-mm, 10-Pin WSON Package
- Low Thermal Resistance: RθJA = 44.4°C/W
- Operating Temperature Range: –40 to +125°C
All trademarks are the property of their respective owners.
Description
The TPS7A39 device is a dual, monolithic, high-PSRR, positive and negative low-dropout (LDO) voltage regulator capable of sourcing (and sinking) up to 150 mA of current. The regulated outputs can be independently and externally adjusted to symmetrical or asymmetrical voltages, making this device an ideal dual, bipolar power supply for signal conditioning.
Both positive and negative outputs of the TPS7A39 ratiometrically track each other during startup to mitigate floating conditions and other power-supply sequencing issues common in dual-rail systems. The negative output can regulate up to 0 V, extending the common-mode range for single-supply amplifiers. The TPS7A39 also features high PSRR to eliminate power-supply noise, such as switching noise, that can compromise signal integrity.
Both regulators are controlled with a single positive logic enable pin for interfacing with standard digital logic. A capacitor-programmable soft-start function controls in-rush current and start-up time. The internal reference voltage of the TPS7A39 can be overridden with an external reference to enable precision outputs, output voltage margining, or to track other power supplies. Additionally, the TPS7A39 has a buffered reference output that can be used as a voltage reference for other components in the system.
These features make the TPS7A39 a robust, simplified solution to power operational amplifiers, digital-to-analog converters (DACs), and other precision analog circuitry.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS7A39 Dual, 150-mA, Wide VIN Positive and Negative LDO Voltage Regulator datasheet (Rev. A) | Sep. 15, 2017 |
Application note | Powering a dual-supply op amp circuit with one LDO (Rev. A) | Mar. 07, 2019 | |
Technical articles | Improving sensor DAQ performance using the PRU-ICSS for grid protection and control | Oct. 09, 2018 | |
Technical articles | Interfacing multiple ADCs to a single processor for grid protection and control | Sep. 13, 2018 | |
Technical articles | LDO basics: capacitor vs. capacitance | Aug. 01, 2018 | |
Technical articles | LDO Basics: Preventing reverse current | Jul. 25, 2018 | |
Application note | Dual Bipolar Power-Supply Considerations for Amplifiers | Aug. 01, 2017 | |
User guide | TPS7A39EVM-865 Evaluation Module User's Guide | Jul. 20, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS7A39EVM-865 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS7A39 150-mA tracking positive/negative low-dropout (LDO) voltage regulator.
The EVM circuit board is configured to be a reference design for engineering applications (...)
Features
- Wide input voltage range: ±3 V to ±33 V
- Monotonic start-up tracking
- Output voltage noise: 15 µVRMS
- Programmable soft start
- Buffered reference output
Design tools & simulation
Reference designs
Design files
-
download TIDA-010065 BOM Files.zip (376KB) -
download TIDA-010065 Assembly Files.zip (1005KB) -
download TIDA-010065 Layer Plots.zip (3172KB) -
download TIDA-010065 CAD Files.zip (6440KB) -
download TIDA-010065 Gerber.zip (1179KB)
Design files
-
download TIDA-010057 BOM.pdf (157KB) -
download TIDA-010057 Assembly Drawing.pdf (285KB) -
download TIDA-010057 PCB.pdf (3590KB) -
download TIDA-010057 Gerber.zip (3652KB) -
download TIDA-010057 CAD Files (Rev. A).zip (6926KB)
Design files
Design files
-
download TIDA-00300 Gerber (Rev. B).zip (2051KB) -
download TIDA-00300 BOM (Rev. B).zip (477KB) -
download TIDA-00300 Assembly Files (Rev. B).zip (876KB) -
download TIDA-00300 PCB (Rev. B).zip (3201KB) -
download TIDA-00300 Altium (Rev. B).zip (9167KB)
Design files
-
download TIDA-00834 Assembly Files.zip (766KB) -
download TIDA-00834 Layer Plots.zip (4773KB) -
download TIDA-00834 Gerber.zip (4136KB) -
download TIDA-00834 Altium (Rev. A).zip (9651KB) -
download TIDA-00834 BOM Files (Rev. A).zip (295KB)
Design files
Design files
-
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)
Design files
-
download TIDA-01555 Assembly Files.zip (733KB) -
download TIDA-01555 Layer Plots.zip (4674KB) -
download TIDA-01555 CAD Files.zip (5446KB) -
download TIDA-01555 Gerber.zip (7628KB) -
download TIDA-01555 BOM Files (Rev. A).zip (287KB)
Design files
-
download TIDA-01427 BOM.pdf (103KB) -
download TIDA-01427 Assembly Drawing.pdf (248KB) -
download TIDA-01427 PCB.pdf (1059KB) -
download TIDA-01427 CAD Files.zip (1373KB) -
download TIDA-01427 Gerber.zip (1250KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (DSC) | 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
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.