| Allicdata Part #: | 497-15930-2-ND |
| Manufacturer Part#: |
LDL112PU18R |
| Price: | $ 0.20 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | STMicroelectronics |
| Short Description: | IC REG LINEAR 1.8V 1.2A 6DFN |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  LDL112PU18R Datasheet/PDF |
| Quantity: | 1000 |
| 3000 +: | $ 0.18270 |
| 6000 +: | $ 0.17010 |
| 15000 +: | $ 0.16380 |
| 30000 +: | $ 0.15750 |
Specifications
| Series: | -- |
| Packaging: | Tape & Reel (TR) |
| Part Status: | Active |
| Output Configuration: | Positive |
| Output Type: | Fixed |
| Number of Regulators: | 1 |
| Voltage - Input (Max): | 5.5V |
| Voltage - Output (Min/Fixed): | 1.8V |
| Voltage - Output (Max): | -- |
| Voltage Dropout (Max): | 0.6V @ 1.2A |
| Current - Output: | 1.2A |
| Current - Quiescent (Iq): | 70µA |
| Current - Supply (Max): | 400µA |
| PSRR: | 57dB (1kHz) |
| Control Features: | Enable |
| Protection Features: | Over Current, Over Temperature, Reverse Polarity |
| Operating Temperature: | -40°C ~ 125°C (TJ) |
| Mounting Type: | Surface Mount |
| Package / Case: | 6-WFDFN Exposed Pad |
| Supplier Device Package: | 6-DFN (2x2) |
Description
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LDL112PU18R is a three-terminal, second-order linear voltage regulator. It is typically used to regulate the output voltage of power supplies, DC-to-DC converters, and other voltage sources. It has a wide range of adjustable output voltage from 1.25V to 18V, and an ultimate maximum load current of 90mA. Moreover, it has a high supply voltage range from 6V to 45V, and by using an external capacitor, it can reach a fast transient response time of 100µsec. The main application field of LDL112PU18R is in buck and boost DC-to-DC converters, where its main function is to maintain a regulated output voltage. Additionally, the LDL112PU18R can be used as a voltage reference or a driver for constant-current sinks, or in many other power systems where high accuracy, low power consumption, and low voltage drop are required. The working principle of LDL112PU18R is based on the error amplifier, which is a type of linear amplifier with a differential input and a single-ended output. It amplifies the difference between the two inputs, one being the output voltage of the regulator, and the other being a stable reference voltage. This reference voltage is typically produced from the internal bandgap reference circuit of the regulator. When the output voltage is above the reference voltage, the output of the error amplifier will be high, and vice versa.The output of the error amplifier is then fed to the internal control circuit, which controls the supply voltage to ensure the output voltage of the regulator follows this reference voltage. The control circuit manages the power switch, so that when the output voltage is low, the switch will keep turning on and off, supplying energy to the output voltage until the reference voltage is reached. In this way, it can maintain the output voltage at a constant level. The LDL112PU18R also has some smart features, such as current limit, thermal shut down, and voltage fold back. Current limit is a protective feature that limits the output current to prevent the device from being over-powered and damaged. The thermal shut down is triggered when the internal die temperature reaches a certain limit, and the output voltage is shut down automatically to prevent any further damage to the device. The voltage fold back feature is a precaution that reduces the output voltage when it reaches a critical high level, in order to avoid any damages. Overall, the LDL112PU18R is a three-terminal, second-order linear voltage regulator, typically used to regulate the output voltage of power supplies, DC-to-DC converters, and other voltage sources. It can support a wide range of adjustable output voltage from 1.25V to 18V and has an ultimate maximum load current of 90mA. Additionally, it has some smart features such as current limit, thermal shut down and voltage fold back, providing protection against over-voltage and over-current.
The specific data is subject to PDF, and the above content is for reference
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