National Semiconductor LP3965ESX-ADJ
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $8.12 | $8.12 |
| 15+ | $1.87 | $28.05 |
| 25+ | $1.83 | $45.75 |
| 50+ | $1.73 | $86.50 |
| 100+ | $1.52 | $152.00 |
| N+ | $0.30 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.216V |
| Voltage - Output (Max) | 5.1V |
| Voltage Dropout (Max) | 0.55V @ 1.5A |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | - |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263 (DDPAK-5) |
The LP3965ESX-ADJ is a high-performance adjustable LDO linear regulator from National Semiconductor, capable of delivering up to 1.5A of output current. With an adjustable output range from 1.216V to 5.1V, it offers design flexibility for various low-voltage applications. The low dropout voltage of 0.55V at full load ensures efficient operation, while the TO-263 package provides excellent thermal performance for demanding power requirements.
- High Current Capacity: Delivers up to 1.5A, suitable for power-hungry digital loads like FPGAs and processors.
- Low Dropout Voltage: 0.55V at 1.5A minimizes power dissipation and extends battery life in portable devices.
- Adjustable Output: Flexible voltage setting from 1.216V to 5.1V via external resistors, accommodating diverse design needs.
- Robust Thermal Package: TO-263 (DDPAK-5) package ensures efficient heat sinking for reliable operation at high currents.
High-Current FPGA Core Supplies
The 1.5A output capability and adjustable voltage down to 1.216V make it ideal for powering FPGA core rails that require precise low-voltage regulation with high current draw.
DSP and Microprocessor Power
With a low dropout of 0.55V, the LP3965ESX-ADJ maintains stable output even when the input supply is close to the output voltage, reducing power loss in battery-powered DSP systems.
Post-Regulation for Switching Converters
Use this LDO after a DC-DC converter to attenuate switching noise and provide a clean, low-ripple supply for sensitive analog circuits, thanks to its 10 mA quiescent current for fast transient response.
Battery-Powered Industrial Sensors
The adjustable output allows tailoring the voltage to sensor requirements, while the TO-263 package efficiently dissipates heat generated by 1.5A loads in industrial enclosures.
Automotive Infotainment Systems
Its robust current handling and low dropout make it suitable for powering audio codecs and display drivers in automotive head units, where input voltage varies with battery conditions.
Bench Power Supply Reference
Engineers can use the adjustable output to create a precise, high-current reference rail for testing prototypes, leveraging the 1.216V reference accuracy.
- Q: What is the output voltage range of the LP3965ESX-ADJ?
- A: The LP3965ESX-ADJ is an adjustable LDO with an output voltage range starting from 1.216V up to 5.1V, set by external resistors.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 1.216V plus the dropout voltage; the device supports inputs up to 7V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.55V at a 1.5A load, ensuring efficient operation with low headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is moderate for high-current LDOs.
- Q: What package is available?
- A: It comes in a TO-263 (DDPAK-5) surface-mount package, suitable for power dissipation.
LP3965ESX-ADJ.pdf
- Q: What is the output voltage range of the LP3965ESX-ADJ?
- A: The LP3965ESX-ADJ is an adjustable LDO with an output voltage range starting from 1.216V up to 5.1V, set by external resistors.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 1.216V plus the dropout voltage; the device supports inputs up to 7V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.55V at a 1.5A load, ensuring efficient operation with low headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is moderate for high-current LDOs.
- Q: What package is available?
- A: It comes in a TO-263 (DDPAK-5) surface-mount package, suitable for power dissipation.
