| Allicdata Part #: | 497-3492-2-ND |
| Manufacturer Part#: |
LD2985AM18R |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | STMicroelectronics |
| Short Description: | IC REG LINEAR 1.8V 150MA SOT23-5 |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  LD2985AM18R Datasheet/PDF |
| Quantity: | 1000 |
Specifications
| Current - Output: | 150mA |
| Base Part Number: | LD2985A |
| Supplier Device Package: | SOT-23-5 |
| Package / Case: | SC-74A, SOT-753 |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 125°C |
| Protection Features: | Over Current, Over Temperature |
| Control Features: | Enable |
| PSRR: | 45dB (1kHz) |
| Current - Supply (Max): | 4mA |
| Current - Quiescent (Iq): | 150µA |
| Series: | -- |
| Voltage Dropout (Max): | 0.575V @ 150mA |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 1.8V |
| Voltage - Input (Max): | 16V |
| Number of Regulators: | 1 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Obsolete |
| Packaging: | Tape & Reel (TR) |
Description
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The LD2985AM18R is an adjustable, linear voltage regulator that offers wide input range while drawing very low current. It can be used in a variety of applications requiring precise voltage regulation in both positive and negative voltage systems. By using a few external components, it can be configured to regulate a wide range of voltages, from 0.5V to 18V, with a maximum output current of 500mA. The LD2985AM18R is a monolithic integrated circuit, integrating a pass transistor, an adjustable voltage reference, and a few additional components into a single package. It is designed to be used in high-voltage battery-operated systems, as well as for applications such as motor controllers and power supplies.The LD2985AM18R works by using a voltage reference and feedback loop, which is used to adjust the output voltage of the regulator based on the input voltage and output current supplied. When the output voltage drops below the set voltage, the voltage reference causes a current to flow through a control transistor, which in turn causes the output voltage to rise. When the output voltage rises above the set voltage, the current decreases and the output voltage drops. This type of closed loop regulation allows for precise adjustment of the output voltage, regardless of the input voltage or load current.To use the LD2985AM18R, two external resistors, R1 and R2, must be connected. R1, connected from the output pin to the adjust pin, sets the output voltage of the voltage regulator according to the following formula: Vout = Vref × [1 + (R1/R2)]. The Vref, or reference voltage, is set internally to 0.185V, and can be adjusted with an external voltage divider. The R2 resistor sets the output current limit, and should be connected from the adjust pin to ground. In addition, a bypass capacitor of typically 0.1μF should be connected across the output pin.The LD2985AM18R offers excellent performance, with an output current of up to 500mA and a maximum input voltage of 18V. It features excellent power supply rejection, low quiescent current, and low dropout voltage. It also has thermal shut down protection, as well as short circuit and output over-current protection. The LD2985AM18R is available in a variety of packages, including SOT-23 and SOIC-8.In summary, the LD2985AM18R is a precision adjustable voltage regulator, with wide input and output ranges and low current consumption. Its adjustable voltage reference and feedback loop make it ideal for applications requiring precise voltage regulation, in both positive and negative voltage systems. Its excellent performance, thermal protection, and low external components make it a suitable choice for numerous applications.
The specific data is subject to PDF, and the above content is for reference
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