National Semiconductor LP3965ESX-1.8
| 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 | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| 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-1.8 is a fixed-output LDO linear regulator from National Semiconductor, delivering a stable 1.8V at up to 1.5A. Its low dropout voltage of 0.55V at full load ensures efficient operation in systems with tight voltage margins. Housed in a TO-263 package, it offers excellent thermal performance for high-current applications, making it a reliable choice for powering digital cores and I/O interfaces.
- Fixed 1.8V Output: Simplifies design by eliminating external resistor dividers, reducing component count and board space.
- High Current Delivery: 1.5A output supports demanding loads such as processors and FPGAs.
- Low Dropout Voltage: 0.55V at 1.5A maximizes efficiency and minimizes heat generation.
- Thermally Efficient Package: TO-263 (DDPAK-5) package dissipates heat effectively, ensuring reliable operation at high currents.
1.8V Logic and Memory Power
This fixed 1.8V output is perfect for powering low-voltage logic ICs, DDR memory termination, and modern microcontrollers that require a stable 1.8V rail.
High-Current Portable Devices
With 1.5A capability, it can power multiple peripherals in tablets and handheld instruments, maintaining a clean 1.8V supply even under peak load conditions.
Networking Equipment
In routers and switches, the LP3965ESX-1.8 provides a reliable 1.8V supply for PHY transceivers and switch ASICs, with low dropout to handle input fluctuations.
Industrial Control Systems
The robust TO-263 package and high current rating make it suitable for industrial PLCs and motor controllers that need a stable 1.8V reference for analog-to-digital converters.
Battery-Powered Medical Devices
Low dropout ensures efficient use of battery power, extending operational life in portable medical monitors that require a constant 1.8V for sensor interfaces.
Telecom Base Stations
Provides clean, regulated 1.8V power for baseband processors and RF transceivers, reducing noise and improving signal integrity in communication systems.
- Q: What is the fixed output voltage of the LP3965ESX-1.8?
- A: The LP3965ESX-1.8 provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: It 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 1.8V plus the dropout voltage (0.55V), so typically 2.35V or higher is required.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.55V at a 1.5A load, allowing operation with low input-to-output headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is typical for high-current LDO regulators.
- Q: What package is available?
- A: It is available in a TO-263 (DDPAK-5) surface-mount package for efficient heat dissipation.
LP3965ESX-1.8.pdf
- Q: What is the fixed output voltage of the LP3965ESX-1.8?
- A: The LP3965ESX-1.8 provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: It 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 1.8V plus the dropout voltage (0.55V), so typically 2.35V or higher is required.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.55V at a 1.5A load, allowing operation with low input-to-output headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is typical for high-current LDO regulators.
- Q: What package is available?
- A: It is available in a TO-263 (DDPAK-5) surface-mount package for efficient heat dissipation.
