Analog Devices Inc. LT1129CST-5#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $9.14 | $9.14 |
| 15+ | $8.85 | $132.75 |
| 25+ | $8.66 | $216.50 |
| 50+ | $8.18 | $409.00 |
| 100+ | $7.22 | $722.00 |
| N+ | $1.44 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Analog Devices Inc. |
| Product Series | |
| Packaging | Tube | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.7V @ 700mA |
| Current - Output | 700mA |
| Current - Quiescent (Iq) | 70 µA |
| Current - Supply (Max) | 90 mA |
| PSRR | 64dB (120Hz) |
| Control Features | Enable |
| Protection Features | Over Temperature, Reverse Polarity |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223-3 |
| ROHS |
The LT1129CST-5#PBF is a low dropout regulator providing a fixed 5V output at up to 700mA. It features a low quiescent current of 70µA and a dropout voltage of 0.7V at full load. With 64dB ripple rejection at 120Hz, it delivers a clean and stable power supply for digital and analog circuits. The SOT-223-3 package offers a compact, power-efficient solution for a variety of applications.
- High Output Current: 700mA capability supports a wide range of loads, from microcontrollers to peripheral drivers.
- Excellent Ripple Rejection: 64dB PSRR at 120Hz ensures a clean output, ideal for noise-sensitive applications.
- Low Dropout: 0.7V dropout at 700mA maximizes efficiency and allows operation with lower input voltages.
- Low Quiescent Current: 70µA quiescent current helps reduce power consumption in standby and light-load conditions.
Post-Regulation for Switching Supplies
The 700mA output and 64dB PSRR at 120Hz make it excellent for cleaning up noisy outputs from DC-DC converters, providing a low-ripple 5V rail.
5V Logic and Microcontroller Power
Provides a stable, high-current 5V supply for microcontrollers, FPGAs, and digital logic in embedded systems, ensuring reliable operation.
Automotive Infotainment
Its robust current capability and low dropout make it suitable for powering infotainment systems, sensors, and control units in vehicles.
Industrial Actuators and Drivers
Delivers clean power to industrial actuators, relays, and motor drivers, reducing electrical noise and improving system reliability.
Networking Equipment
Ideal for routers, switches, and modems where a stable 5V supply is needed for processors and communication ICs, with good ripple rejection.
- Q: What is the output voltage of the LT1129CST-5#PBF?
- A: The fixed output voltage is 5V.
- Q: What is the maximum output current?
- A: It can deliver up to 700mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.7V at 700mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 70µA.
- Q: What package is available?
- A: It comes in a SOT-223-3 package.
- Q: What is the output voltage of the LT1129CST-5#PBF?
- A: The fixed output voltage is 5V.
- Q: What is the maximum output current?
- A: It can deliver up to 700mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.7V at 700mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 70µA.
- Q: What package is available?
- A: It comes in a SOT-223-3 package.

LT1129CST-5#PBF.pdf