National Semiconductor LMS1587CS-ADJ
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $9.32 | $9.32 |
| 15+ | $2.14 | $32.10 |
| 25+ | $2.10 | $52.50 |
| 50+ | $1.98 | $99.00 |
| 100+ | $1.75 | $175.00 |
| N+ | $0.35 | 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) | 13V |
| Voltage - Output (Min/Fixed) | 1.25V |
| Voltage - Output (Max) | 11.7V |
| Voltage Dropout (Max) | 1.3V @ 3A |
| Current - Output | 3A |
| Current - Quiescent (Iq) | 7 mA |
| Current - Supply (Max) | 13 mA |
| PSRR | 72dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-4, D2PAK (3 Leads + Tab), TO-263AA |
| Supplier Device Package | TO-263 (DDPAK-3) |
| ROHS |  |
The LMS1587CS-ADJ is a versatile adjustable low-dropout regulator from National Semiconductor, capable of delivering up to 3A with an output voltage range from 1.25V to 11.7V. Its low dropout of 1.3V at full load and 72dB PSRR at 120Hz make it an excellent choice for audio, industrial, and power supply applications. The TO-263 (DDPAK-3) package provides robust thermal performance for high-current operation.
- High Output Current: 3A capability supports demanding loads like motors and amplifiers.
- Adjustable Output: Flexible voltage setting from 1.25V to 11.7V via external resistors.
- Excellent Ripple Rejection: 72dB PSRR at 120Hz ensures clean DC for audio and precision circuits.
- Robust Thermal Package: TO-263 package handles high power dissipation efficiently.
Adjustable Power Supplies
With a 3A output and adjustable voltage from 1.25V to 11.7V, this regulator is perfect for bench power supplies or custom voltage rails in prototyping.
High-Power LED Drivers
Use as a constant-voltage source for high-brightness LED arrays, where the 3A capacity can drive multiple strings with a stable voltage.
Audio Amplifier Supplies
The 72dB PSRR at 120Hz makes it suitable for powering audio preamps or small power amplifiers, reducing hum from rectified AC.
Battery Chargers
For lead-acid or Li-ion charging circuits, the adjustable output allows precise voltage setting (e.g., 14.4V for 12V batteries) with high current.
Industrial Actuators
In factory automation, the LMS1587CS-ADJ provides a stable 5V or 12V rail for PLCs and motor controllers, handling inrush currents up to 3A.
Telecom Base Stations
For RF power amplifiers, this regulator offers a clean, adjustable supply with high current, ensuring consistent transmission power.
- Q: What is the output voltage of the LMS1587CS-ADJ?
- A: It is an adjustable regulator; the output voltage can be set from 1.25V up to 11.7V using external resistors.
- Q: What is the maximum output current?
- A: It can deliver up to 3A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.25V up to 13V (absolute maximum).
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 1.3V at 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 7mA.
- Q: What package is available?
- A: It is available in a TO-263 (DDPAK-3) package.
LMS1587CS-ADJ.pdf
- Q: What is the output voltage of the LMS1587CS-ADJ?
- A: It is an adjustable regulator; the output voltage can be set from 1.25V up to 11.7V using external resistors.
- Q: What is the maximum output current?
- A: It can deliver up to 3A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.25V up to 13V (absolute maximum).
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 1.3V at 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 7mA.
- Q: What package is available?
- A: It is available in a TO-263 (DDPAK-3) package.
