L7809CD2T-TR Integrated Circuits (ICs) |
|
| Allicdata Part #: | 497-1176-2-ND |
| Manufacturer Part#: |
L7809CD2T-TR |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | STMicroelectronics |
| Short Description: | IC REG LINEAR 9V 1.5A D2PAK |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  L7809CD2T-TR Datasheet/PDF |
| Quantity: | 2000 |
Specifications
| Current - Output: | 1.5A |
| Base Part Number: | L7809 |
| Supplier Device Package: | D2PAK |
| Package / Case: | TO-263-3, D²Pak (2 Leads + Tab), TO-263AB |
| Mounting Type: | Surface Mount |
| Operating Temperature: | 0°C ~ 125°C |
| Protection Features: | Over Temperature, Short Circuit |
| Control Features: | -- |
| PSRR: | 55dB (120Hz) |
| Current - Quiescent (Iq): | 8mA |
| Series: | -- |
| Voltage Dropout (Max): | 2V @ 1A (Typ) |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 9V |
| Voltage - Input (Max): | 35V |
| Number of Regulators: | 1 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Active |
| Packaging: | Tape & Reel (TR) |
Description
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PMIC, or power management integrated circuits, are devices that convert energy from one form to another. Most PMICs are designed to provide one or more power supply voltages to circuits in order to improve their performance, reliability, and efficiency. Among these devices, voltage regulators, such as the L7809CD2T-TR, are used to maintain the output voltage at a constant level despite varying input voltage or load current. This article will discuss the L7809CD2T-TR’s application field and working principle.The L7809CD2T-TR is an adjustable linear voltage regulator from STMicroelectronics, designed for a wide range of applications. It consists of an on-chip automatic protection circuit, which can protect both the device and the circuit from excessive temperature or abnormal operating conditions. The device features a low dropout voltage (2.2V maximum for 9V output voltage) and a wide operating temperature range (-40°C to +125°C). These features make it suitable for use in high power, automotive or industrial applications, or in circuits that require a low noise or low ripple output voltage.The L7809CD2T-TR is a simple three-terminal linear voltage regulator circuit, meaning it has an input, output and ground terminal. The input voltage is applied across the input and ground terminals, while the regulated output voltage is available at the output terminal with respect to the ground. The device uses a control circuit to monitor the output voltage and adjust the current through the load to maintain it at the set constant level, regardless of changes in the input voltage and load current.The L7809CD2T-TR’s control circuit contains two main components: a reference voltage source and an error amplifier. The voltage reference is a device that produces a constant output voltage regardless of temperature and current. The error amplifier compares the reference voltage with the output voltage. When the voltage difference is zero, the control circuit is said to be in equilibrium and no voltage or current is modified. However, if there is a difference between the reference voltage and the output voltage, the current or voltage will be increased or decreased accordingly.Also, the L7809CD2T-TR features an overload protection circuit, which automatically shuts down the regulator if the overload current exceeds the specified limit. This overload protection feature helps protect the IC from damage due to excessive load current. Moreover, the IC has an input and output voltage range of 5V to 18V and an output voltage of 9V, with an operating temperature range of -40°C to +125°C.In conclusion, the L7809CD2T-TR is a linear voltage regulator with wide applicability, due to its low dropout voltage and wide operating temperature range. With its adjustable control circuit, it can maintain a constant output voltage regardless of changes in input voltage or load current. Along with its overload protection circuit, it provides reliable and efficient power management solutions for automotive and industrial applications.
The specific data is subject to PDF, and the above content is for reference
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