Texas Instruments LMS1585ACSX-3.3/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.69 | $2.69 |
| 15+ | $2.60 | $39.00 |
| 25+ | $2.55 | $63.75 |
| 50+ | $2.41 | $120.50 |
| 100+ | $2.12 | $212.00 |
| N+ | $0.42 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| 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 | TO-263 (DDPAK-3) |
| ROHS |
The LMS1585ACSX-3.3/NOPB from Texas Instruments is a high-current 3.3V low dropout linear regulator capable of delivering up to 5A. With a dropout voltage of 1.4V at full load and 72dB PSRR, it provides excellent regulation and noise rejection for demanding applications. The TO-263 (DDPAK-3) package ensures efficient heat dissipation.
- High Output Current: 5A capability supports power-hungry digital loads like FPGAs and processors.
- Excellent Ripple Rejection: 72dB PSRR at 120Hz provides clean output for sensitive electronics.
- Robust Thermal Performance: TO-263 package dissipates heat effectively for reliable operation.
- Fixed 3.3V Output: Simplifies design with no external resistor divider needed.
High-Current FPGA/ASIC Core Supplies
The 5A output capability makes this regulator ideal for powering FPGA cores, ASIC logic, and DSPs that require a stable 3.3V rail with high transient current demands.
Server and Telecom Power Distribution
In networking equipment and servers, the LMS1585ACSX-3.3/NOPB provides a clean, regulated 3.3V supply for memory modules, I/O controllers, and high-speed logic.
Post-Regulation for DC-DC Converters
Use this LDO after a switching regulator to reduce output ripple and noise, providing a low-noise 3.3V rail for sensitive analog and RF circuits.
Battery Charging Circuits
The high current capability supports charging circuits and power management systems in industrial and automotive battery applications.
Test and Measurement Equipment
Precision instruments require stable, low-noise supplies. This regulator delivers 5A with 72dB PSRR at 120Hz, ensuring accurate measurements.
- Q: What is the output voltage?
- A: The LMS1585ACSX-3.3/NOPB provides a fixed 3.3V output.
- 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 range is 3.3V (nominal); refer to the datasheet for the full operating range.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.4V at 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 TO-263 (DDPAK-3) package.
- Q: What is the output voltage?
- A: The LMS1585ACSX-3.3/NOPB provides a fixed 3.3V output.
- 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 range is 3.3V (nominal); refer to the datasheet for the full operating range.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.4V at 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 TO-263 (DDPAK-3) package.

LMS1585ACSX-3.3/NOPB.pdf