Texas Instruments LMS1585ACSX-3.3/NOPB

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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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

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.
Base Product Number : LMS1585ACSX-3.3
3.3V 5A DDPAK High Current LDO Linear Regulator Texas Instruments TO-263
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.