TAEJIN LM1117RS-ADJ
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.64 | $0.64 |
| 15+ | $0.15 | $2.25 |
| 25+ | $0.14 | $3.50 |
| 50+ | $0.14 | $7.00 |
| 100+ | $0.12 | $12.00 |
| N+ | $0.02 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | TAEJIN |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 20V |
| Voltage - Output (Min/Fixed) | 1.25V |
| Voltage - Output (Max) | 18.7V |
| Voltage Dropout (Max) | 1.3V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | - |
| PSRR | 75dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-252-3, DPAK (2 Leads + Tab), SC-63 |
| Supplier Device Package | TO-252-3 |
| ROHS |  |
The LM1117RS-ADJ is a robust adjustable linear regulator from TAEJIN, designed to deliver up to 1A of output current. With an adjustable output range from 1.25V to 18.7V, it offers flexibility for a wide variety of applications. Its low dropout voltage of 1.3V ensures efficient operation even with small input-to-output differentials. The device features a quiescent current of 10 mA and a high PSRR of 75dB at 120Hz, making it an excellent choice for noise-sensitive circuits. Housed in a TO-252-3 package, it is suitable for surface-mount designs requiring reliable and stable power regulation.
- High Output Current: Capable of delivering 1A, making it suitable for powering microcontrollers, sensors, and other moderate-power loads.
- Adjustable Output Flexibility: Output voltage can be set from 1.25V to 18.7V with external resistors, accommodating various design requirements.
- Excellent Ripple Rejection: With 75dB PSRR at 120Hz, it effectively filters out low-frequency noise, ensuring clean power for analog and audio circuits.
- Low Dropout Voltage: The 1.3V dropout at full load allows operation with lower input voltages, improving efficiency in battery-powered systems.
Adjustable Power Supply for Microcontrollers
Use the LM1117RS-ADJ to create a precise, adjustable supply rail (e.g., 3.3V or 5V) for MCU boards. Its 1A current capability supports most microcontroller and peripheral loads, while the adjustable output allows fine-tuning for specific logic levels.
Battery-Powered Devices
In battery-operated equipment, the low dropout of 1.3V maximizes the usable battery voltage range, allowing the regulator to maintain a stable output even as the battery discharges. This extends the effective runtime of portable devices.
Post-Regulation for Switching Converters
Place the LM1117RS-ADJ after a DC-DC converter to reduce output ripple and noise. With a PSRR of 75dB at 120Hz, it effectively attenuates low-frequency ripple, providing a clean supply for sensitive analog circuits.
Industrial Sensor Interfaces
For industrial sensors requiring a stable, adjustable reference voltage, this LDO offers a simple solution. The 1A output can power multiple sensors or an entire interface circuit, ensuring consistent performance across temperature variations.
Audio Equipment Biasing
In audio circuits, a clean and stable supply is critical. The LM1117RS-ADJ's high PSRR at 120Hz helps eliminate mains hum, making it suitable for biasing op-amps or preamplifier stages where noise rejection is paramount.
Prototyping and Lab Supplies
As a bench supply for experiments, the adjustable output from 1.25V to 18.7V makes this regulator a versatile tool. Its TO-252 package is easy to solder on adapter boards, enabling quick prototyping of various voltage rails.
- Q: What is the output voltage range of the LM1117RS-ADJ?
- A: The LM1117RS-ADJ is an adjustable LDO regulator with an output voltage range from 1.25V up to 18.7V, set by external resistors.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 1.25V above the desired output voltage, with a maximum input of 18.7V.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1.3V at a 1A load current.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is typical for a 1A LDO.
- Q: What package is available?
- A: The LM1117RS-ADJ is available in the TO-252-3 (DPAK) surface-mount package.
LM1117RS-ADJ.pdf
- Q: What is the output voltage range of the LM1117RS-ADJ?
- A: The LM1117RS-ADJ is an adjustable LDO regulator with an output voltage range from 1.25V up to 18.7V, set by external resistors.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 1.25V above the desired output voltage, with a maximum input of 18.7V.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1.3V at a 1A load current.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is typical for a 1A LDO.
- Q: What package is available?
- A: The LM1117RS-ADJ is available in the TO-252-3 (DPAK) surface-mount package.
