Texas Instruments LP3965ES-1.8
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $13.52 | $13.52 |
| 15+ | $4.24 | $63.60 |
| 25+ | $4.15 | $103.75 |
| 50+ | $3.92 | $196.00 |
| 100+ | $3.46 | $346.00 |
| N+ | $0.69 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tube | |
| Output Configuration | Obsolete |
| Output Type | Positive |
| Number of Regulators | Fixed |
| 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) | 9 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | - |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263 (DDPAK-5) |
| ROHS |  |
The LP3965ES-1.8 from Texas Instruments is a fixed 1.8V linear regulator designed for high-current applications up to 1.5A. Its low dropout voltage of 0.55V at full load makes it highly efficient for 3.3V to 1.8V conversions. The DDPAK/TO-263-5 package provides excellent thermal dissipation, ensuring reliability in demanding environments. With a quiescent current of 9 mA, it balances performance and power consumption. This LDO is an ideal choice for powering DSPs, FPGAs, and memory systems that require a stable, low-noise voltage rail.
- Fixed 1.8V Output: Simplifies design with no external resistor divider needed.
- High Current (1.5A): Supports power-hungry digital loads like FPGAs and DSPs.
- Low Dropout (0.55V): Enhances efficiency by allowing a smaller input-to-output differential.
- Thermally Efficient Package: DDPAK/TO-263-5 package dissipates heat effectively for reliable operation.
DSP and Microcontroller Power
The LP3965ES-1.8 provides a stable 1.8V rail for DSPs and MCUs, ensuring reliable operation at high clock speeds. Its 1.5A current capability supports multiple peripherals.
DDR Memory Termination
For DDR2/DDR3 memory systems, a clean 1.8V supply is essential. This LDO delivers low-noise power for VDDQ rails, improving memory signal integrity.
Networking Equipment
In routers and switches, this regulator powers low-voltage ASICs and PHYs. The low dropout of 0.55V at 1.5A reduces power dissipation in 3.3V to 1.8V conversion.
Portable Instrumentation
With a 9 mA quiescent current, it is suitable for battery-powered test equipment that requires a precise 1.8V supply for analog-to-digital converters.
Set-Top Boxes and Media Players
This LDO powers the core voltage of media processors, providing clean power that minimizes video and audio artifacts. The TO-263 package handles thermal loads efficiently.
Industrial Control Systems
For PLCs and motor controllers, the LP3965ES-1.8 ensures stable operation of 1.8V logic circuits, even in noisy industrial environments.
- Q: What is the fixed output voltage of the LP3965ES-1.8?
- A: This LDO provides a fixed output voltage of 1.8V, ideal for low-voltage digital cores.
- Q: What is the maximum output current?
- A: It can supply up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.8V (minimum) up to the absolute maximum rating (typically 7V).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.55V at a 1.5A load, allowing efficient regulation with low headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA, which is typical for a 1.5A-class regulator.
- Q: What package is available?
- A: It is available in the DDPAK/TO-263-5 surface-mount package, offering good thermal performance.
LP3965ES-1.8.pdf
- Q: What is the fixed output voltage of the LP3965ES-1.8?
- A: This LDO provides a fixed output voltage of 1.8V, ideal for low-voltage digital cores.
- Q: What is the maximum output current?
- A: It can supply up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.8V (minimum) up to the absolute maximum rating (typically 7V).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.55V at a 1.5A load, allowing efficient regulation with low headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA, which is typical for a 1.5A-class regulator.
- Q: What package is available?
- A: It is available in the DDPAK/TO-263-5 surface-mount package, offering good thermal performance.
