Texas Instruments LMS1585ACS-3.3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $11.08 | $11.08 |
| 15+ | $2.55 | $38.25 |
| 25+ | $2.49 | $62.25 |
| 50+ | $2.35 | $117.50 |
| 100+ | $2.08 | $208.00 |
| N+ | $0.42 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 13V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.4V @ 5A |
| Current - Output | 5A |
| Current - Quiescent (Iq) | 7 mA |
| Current - Supply (Max) | 13 mA |
| PSRR | 72dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-4, D2PAK (3 Leads + Tab), TO-263AA |
| Supplier Device Package | DDPAK/TO-263-3 |
| ROHS |  |
The LMS1585ACS-3.3 is a high-current 5A low dropout linear regulator delivering a fixed 3.3V output. With a dropout voltage of just 1.4V at full load, it efficiently regulates from 5V rails. Its 72dB PSRR at 120Hz ensures clean power for noise-sensitive applications. Housed in a DDPAK/TO-263-3 package, it offers excellent thermal performance for demanding industrial and telecom environments.
- High 5A Output Current: Supports power-hungry FPGAs and processors without needing multiple parallel regulators.
- Low Dropout (1.4V @ 5A): Maximizes efficiency when operating from a 5V rail, reducing heat dissipation.
- Excellent PSRR (72dB @ 120Hz): Effectively filters mains-frequency ripple, ensuring clean output for sensitive analog circuits.
- Robust TO-263 Package: Provides superior thermal dissipation for continuous high-current operation.
High-Current FPGA Core Supply
The 5A output capability and 3.3V fixed output make it ideal for powering FPGA core logic that requires stable, high-current delivery with minimal voltage deviation.
DSP and Processor Power
Digital signal processors and microprocessors often need a clean 3.3V rail. The LMS1585ACS-3.3 provides low-noise power with 72dB PSRR at 120Hz, reducing ripple from switching supplies.
Industrial Control Systems
In factory automation, the robust TO-263 package and 5A current rating support multiple sensors and actuators on a single regulated 3.3V bus, simplifying power distribution.
Telecom Line Cards
Line cards require reliable 3.3V for ASICs and line drivers. The low dropout of 1.4V allows operation from a 5V rail with ample headroom, improving efficiency.
Battery-Powered Equipment
For systems using 4.5V to 6V battery packs, the 3.3V output with 1.4V dropout ensures regulation even as batteries discharge, extending usable runtime.
Test and Measurement Instruments
Precision instruments need stable reference rails. The 72dB PSRR and 5A capacity provide a clean, stiff 3.3V supply for analog and digital sections.
- Q: What is the output voltage of the LMS1585ACS-3.3?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be higher than 3.3V plus the dropout voltage; typically 4.7V or higher is recommended.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.4V at a 5A load.
- Q: What is the quiescent current?
- A: The quiescent current is 7 mA.
- Q: What package is available?
- A: It comes in a DDPAK/TO-263-3 package.
LMS1585ACS-3.3.pdf
- Q: What is the output voltage of the LMS1585ACS-3.3?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be higher than 3.3V plus the dropout voltage; typically 4.7V or higher is recommended.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.4V at a 5A load.
- Q: What is the quiescent current?
- A: The quiescent current is 7 mA.
- Q: What package is available?
- A: It comes in a DDPAK/TO-263-3 package.
