Overview
The LD1085CDT-R is a low-drop, adjustable positive voltage regulator produced by STMicroelectronics. This component is designed to provide up to 3 A of output current, making it suitable for a variety of high-current applications. The regulator features a low dropout voltage, guaranteed to be as low as 1.5 V at the maximum current, which enhances efficiency by minimizing the voltage drop between the input and output. It is pin-to-pin compatible with standard 3-terminal adjustable regulators but offers improved performance in terms of dropout voltage and output tolerance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Input Voltage (VI) | 30 | V |
| Output Current (IO) | Up to 3 | A |
| Dropout Voltage (Vd) | 1.3 - 1.5 | V |
| Output Tolerance | ±2% at 25 °C, ±3% in full temperature range | % |
| Reference Voltage (VRef) | 1.225 - 1.275 | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package | DPAK | |
| Thermal Resistance Junction-Case (RthJC) | 3 | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | 62.5 | °C/W |
Key Features
- Low Dropout Voltage: Guaranteed as low as 1.5 V at the maximum current, reducing power loss and increasing efficiency.
- Adjustable Output Voltage: Allows for flexible voltage regulation through external resistors.
- High Output Current: Provides up to 3 A of output current, suitable for high-current applications.
- Tight Output Tolerance: ±2% at 25 °C and ±3% in the full temperature range, ensuring stable output voltage.
- Internal Power and Thermal Limit: Built-in protection against overcurrent and overheating.
- Wide Operating Temperature Range: Operates from -40 °C to 125 °C, making it suitable for various environmental conditions.
- Pin-to-Pin Compatibility: Compatible with standard 3-terminal adjustable regulators but with improved performance.
Applications
- Power Supplies: Ideal for designing power supplies that require high current and low dropout voltage.
- Industrial Control Systems: Suitable for use in industrial control systems where stable and efficient voltage regulation is critical.
- Automotive Systems: Can be used in automotive applications where high reliability and wide operating temperature ranges are necessary.
- Consumer Electronics: Applicable in consumer electronics that require efficient and stable power management.
Q & A
- What is the maximum output current of the LD1085CDT-R?
The LD1085CDT-R can provide up to 3 A of output current.
- What is the typical dropout voltage of the LD1085CDT-R?
The typical dropout voltage is 1.3 V, with a maximum of 1.5 V at the maximum current.
- What is the output voltage tolerance of the LD1085CDT-R?
The output voltage tolerance is ±2% at 25 °C and ±3% in the full temperature range.
- What is the operating temperature range of the LD1085CDT-R?
The operating temperature range is from -40 °C to 125 °C.
- What package type is the LD1085CDT-R available in?
The LD1085CDT-R is available in the DPAK package.
- Is the LD1085CDT-R pin-to-pin compatible with other regulators?
Yes, it is pin-to-pin compatible with standard 3-terminal adjustable regulators.
- What is the thermal resistance junction-case (RthJC) of the LD1085CDT-R?
The thermal resistance junction-case (RthJC) is 3 °C/W.
- Does the LD1085CDT-R have built-in protection features?
Yes, it has internal power and thermal limit protection.
- What is the minimum capacitor required for stability?
A minimum capacitor of 10 µF is required for stability.
- Is the LD1085CDT-R suitable for automotive applications?
Yes, it can be used in automotive applications due to its wide operating temperature range and high reliability.
