LDL1117S30R
IC REG LINEAR 3V 1.2A SOT223
Quick Answer: The LDL1117S30R from STMicroelectronics is a linear voltage regulator IC that provides a fixed positive 3 V output from a single regulator.
- Manufacturer
- STMicroelectronics
- Product Category
- Voltage Regulators & Voltage Controllers
- Package
- TO-261-4, TO-261AA
- Stock
- 15,483 pcs
- Availability
- Current quantity subject to confirmation.
Product Attributes
| Manufacturer | STMicroelectronics |
|---|---|
| Product Category | Voltage Regulators & Voltage Controllers |
| Current - Output | 1.2A |
| Current - Quiescent (Iq) | 500 µA |
| Min Qty | 1 |
| Mounting Type | Surface Mount |
| Number of Regulators | 1 |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Product status | Active |
| Protection Features | Over Current, Over Temperature, Under Voltage Lockout (UVLO) |
| PSRR | 87dB ~ 65dB (120Hz ~ 100kHz) |
| Supplier Device Package | SOT-223 |
| Voltage - Input (Max) | 18V |
| Voltage - Output (Min/Fixed) | 3V |
| Voltage Dropout (Max) | 0.6V @ 1.2A |
| Datasheet | View Datasheet PDF |
Procurement Snapshot
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Detailed Description for LDL1117S30R
Product Overview
The LDL1117S30R from STMicroelectronics is a linear voltage regulator IC that provides a fixed positive 3 V output from a single regulator. It is intended for surface-mount use in SOT-223 packaging and supports an output current of 1.2 A. The device accepts an input voltage up to 18 V and specifies a maximum dropout of 0.6 V at 1.2 A. Its quiescent current is 500 µA, and the junction temperature operating range is -40°C to 125°C.
Key Features
- Fixed positive 3 V output from a single regulator
- 1.2 A output current
- Maximum input voltage of 18 V
- Maximum dropout of 0.6 V at 1.2 A
- 500 µA quiescent current
- 87 dB to 65 dB PSRR from 120 Hz to 100 kHz
- Over-current, over-temperature, and UVLO protection
- Surface-mount SOT-223 package
- Junction temperature range of -40°C to 125°C
Applications
- Regulated 3 V supply for logic circuits and sensor subsystems
- Post-regulation from a higher input rail for compact 3 V loads
- Battery-powered embedded boards requiring a fixed 3 V output
Design & Procurement Notes
Designers should verify that the input rail can exceed the 3 V output by the specified dropout margin at the intended load current, especially near the 1.2 A rating. Thermal behavior should be evaluated because the device is a linear regulator with a maximum input voltage of 18 V and a junction temperature limit of 125°C. The 500 µA quiescent current and PSRR range of 87 dB to 65 dB from 120 Hz to 100 kHz can be considered for standby and ripple-sensitive rails. The integrated over-current, over-temperature, and UVLO protections should be checked against system fault requirements. For layout and procurement, confirm the SOT-223 / TO-261-4, TO-261AA package designation to ensure the correct footprint and mounting method.
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