National Semiconductor LP8340CDTX-5.0
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.84 | $2.84 |
| 15+ | $0.65 | $9.75 |
| 25+ | $0.64 | $16.00 |
| 50+ | $0.60 | $30.00 |
| 100+ | $0.53 | $53.00 |
| N+ | $0.11 | 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) | 10V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.8V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 100 µA |
| Current - Supply (Max) | 170 µA |
| PSRR | 55dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-252-3, DPAK (2 Leads + Tab), SC-63 |
| Supplier Device Package | TO-252-3 |
The LP8340CDTX-5.0 is a fixed 5V linear regulator delivering up to 1A with a low 0.8V dropout. Its 100µA quiescent current and 55dB ripple rejection make it suitable for both battery and line-powered systems. The TO-252-3 package offers excellent thermal performance for demanding applications.
- High Current Capacity: 1A output supports multiple loads on a single 5V rail.
- Low Quiescent Current: 100µA reduces standby power consumption.
- Moderate Dropout: 0.8V at 1A allows operation from 5.8V inputs.
- Surface-Mount Package: TO-252-3 is easy to solder and thermally efficient.
Automotive Infotainment
Provides a stable 5V rail for head units and display controllers with 55dB PSRR filtering alternator noise.
Industrial Sensors
Powers 5V transducers and signal conditioners in factory automation with low dropout from 6V rails.
Networking Equipment
Regulates 5V for Ethernet PHYs and switch ICs in routers and switches.
Consumer Electronics
Delivers clean 5V for set-top boxes and gaming peripherals.
Battery Chargers
Provides a regulated 5V for charging circuits in portable devices.
FPGA Core Supplies
Powers 5V I/O banks in FPGAs with 1A capability for multiple logic families.
- Q: What is the output voltage?
- A: The LP8340CDTX-5.0 provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 0.8V above 5V (5.8V minimum) for regulation.
- Q: What is the dropout voltage?
- A: Dropout is 0.8V at 1A load current.
- Q: What is the quiescent current?
- A: Quiescent current is low at 100 µA.
- Q: What package is available?
- A: It comes in a TO-252-3 (DPAK) surface-mount package.
- Q: What is the output voltage?
- A: The LP8340CDTX-5.0 provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 0.8V above 5V (5.8V minimum) for regulation.
- Q: What is the dropout voltage?
- A: Dropout is 0.8V at 1A load current.
- Q: What is the quiescent current?
- A: Quiescent current is low at 100 µA.
- Q: What package is available?
- A: It comes in a TO-252-3 (DPAK) surface-mount package.

LP8340CDTX-5.0.pdf