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Power management
500mA 35V linear voltage regulator
Data sheet
- document-pdfAcrobat UA78M 35V, 500mA, Positive-Voltage Linear Regulator datasheet (Rev. U) PDF | HTML
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UA78M
Product details
- Input voltage range (VIN): 5.3V to 35V
- Output voltage range (VOUT): 3.3V to 12V
- Output current (IOUT): Up to 500mA
- Quiescent current IQ: 4.5mA
- Built-in short-circuit current limiting and thermal protection
- Stable without any external components
- Operating temperature range:
- Legacy chip C versions: 0°C to +125°C
- Legacy chip I version: –40°C to +125°C
- New chip: –40°C to +125°C
- Packages:
- 3-pin, 6.5mm × 7mm SOT-223
- 3-pin, 6.6mm × 10.11mm TO-252
- Input voltage range (VIN): 5.3V to 35V
- Output voltage range (VOUT): 3.3V to 12V
- Output current (IOUT): Up to 500mA
- Quiescent current IQ: 4.5mA
- Built-in short-circuit current limiting and thermal protection
- Stable without any external components
- Operating temperature range:
- Legacy chip C versions: 0°C to +125°C
- Legacy chip I version: –40°C to +125°C
- New chip: –40°C to +125°C
- Packages:
- 3-pin, 6.5mm × 7mm SOT-223
- 3-pin, 6.6mm × 10.11mm TO-252
The UA78M fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. Use the UA78M for on-card regulation to eliminate noise and distribution problems associated with single-point regulation. The UA78M is also used with power-pass elements to make high-current voltage regulators. The UA78M delivers up to 500mA of output current. Additionally, the UA78M does not need an external capacitor for stable operation across the load current range. The internal current-limiting and thermal-shutdown features of this regulator help protect the device from overload.
The UA78M is characterized for the junction temperature range of –40°C to +125°C. See the Device Nomenclature table for more details.
The UA78M fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. Use the UA78M for on-card regulation to eliminate noise and distribution problems associated with single-point regulation. The UA78M is also used with power-pass elements to make high-current voltage regulators. The UA78M delivers up to 500mA of output current. Additionally, the UA78M does not need an external capacitor for stable operation across the load current range. The internal current-limiting and thermal-shutdown features of this regulator help protect the device from overload.
The UA78M is characterized for the junction temperature range of –40°C to +125°C. See the Device Nomenclature table for more details.
Technical documentation
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View all 3Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | UA78M 35V, 500mA, Positive-Voltage Linear Regulator datasheet (Rev. U) | PDF | HTML | 17 May 2024 |
Application note | LDO Noise Demystified (Rev. B) | PDF | HTML | 18 Aug 2020 | |
Application note | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 09 Aug 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
MLTLDO2EVM-037 — Universal LDO linear voltage regulator evaluation module for DCY, DDA and KVU packages
The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU, (...)
User guide: PDF
Not available on TI.com
Simulation model
UA78M Fixed 5V PSpice Transient Model
SLVME53.ZIP (26 KB) - PSpice Model
Package | Pins | Download |
---|---|---|
SOT-223 (DCY) | 4 | View options |
TO-220 (KCS) | 3 | View options |
TO-252 (KVU) | 3 | View options |
TI's Standard Terms and Conditions for Evaluation Items apply.
Ordering & quality
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