Texas Instruments LP38503ATJ-ADJ/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 Adjustable
Number of Regulators 1
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 5V
Voltage Dropout (Max) 0.67V @ 3A
Current - Output 3A
Current - Quiescent (Iq) 15 µA
Current - Supply (Max) 4 mA
PSRR 58dB ~ 56dB (120Hz ~ 1kHz)
Control Features -
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-263-5 Thin
Supplier Device Package TO-263-5 Thin
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LP38503ATJ-ADJ/NOPB from Texas Instruments is a high-current, adjustable LDO linear regulator capable of delivering up to 3A. It features an ultra-low quiescent current of 15 µA, making it exceptionally efficient for standby and always-on applications. With a low dropout voltage of 0.67V at full load and good PSRR, it provides a clean and stable output. The TO-263-5 Thin package ensures excellent thermal performance.

  • Ultra-Low Quiescent Current: At only 15 µA, it significantly extends battery life in portable and always-on applications, even with high load capability.
  • High Output Current: Capable of delivering 3A, making it suitable for powering high-performance processors and FPGAs.
  • Adjustable Output: Provides design flexibility to set the output voltage precisely as required by the application.
  • Excellent Thermal Performance: The TO-263-5 Thin package efficiently dissipates heat, ensuring reliable operation at high currents.

High-Current Post-Regulation

The LP38503ATJ-ADJ/NOPB's 3A current capability makes it ideal for post-regulating a noisy switching supply to provide a clean, low-noise rail for high-performance audio or video equipment.

FPGA and ASIC Core Power

Power the core voltage of large FPGAs and ASICs that require up to 3A. The adjustable output allows precise voltage setting, while the low dropout ensures efficient operation.

Battery-Powered High-Drain Devices

Despite its high current capability, the ultra-low 15 µA quiescent current makes it suitable for battery-powered devices that need bursts of high current, such as portable radios or high-power LED drivers.

Industrial Control Systems

Provide a stable, adjustable power supply for industrial microcontrollers, sensors, and actuators. The high current and low dropout ensure reliable operation in demanding environments.

Telecom and Networking Infrastructure

This LDO can power line cards and communication processors that require a clean, high-current 5V supply, ensuring signal integrity and system reliability.

Q: What is the output voltage of the LP38503ATJ-ADJ/NOPB?
A: It is an adjustable LDO with a maximum output voltage of 5V.
Q: What is the maximum output current?
A: It can deliver up to 3A of output current.
Q: What is the input voltage range?
A: The minimum input voltage is 0.6V.
Q: What is the dropout voltage?
A: The dropout voltage is 0.67V at a 3A load.
Q: What is the quiescent current?
A: The quiescent current is a low 15 µA.
Q: What is the PSRR performance?
A: It offers a PSRR of 58dB to 56dB from 120Hz to 1kHz.
Base Product Number : LP38503ATJ-ADJ
3A Adjustable High Current LDO Linear Regulator Low Quiescent Current Texas Instruments TO-263-5
Q: What is the output voltage of the LP38503ATJ-ADJ/NOPB?
A: It is an adjustable LDO with a maximum output voltage of 5V.
Q: What is the maximum output current?
A: It can deliver up to 3A of output current.
Q: What is the input voltage range?
A: The minimum input voltage is 0.6V.
Q: What is the dropout voltage?
A: The dropout voltage is 0.67V at a 3A load.
Q: What is the quiescent current?
A: The quiescent current is a low 15 µA.
Q: What is the PSRR performance?
A: It offers a PSRR of 58dB to 56dB from 120Hz to 1kHz.