Allicdata Part #: | LD1117S28TR-ND |
Manufacturer Part#: |
LD1117S28TR |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | STMicroelectronics |
Short Description: | IC REG LINEAR 2.85V 800MA SOT223 |
More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
DataSheet: | LD1117S28TR Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Current - Output: | 800mA |
Base Part Number: | LD1117 |
Supplier Device Package: | SOT-223 |
Package / Case: | TO-261-4, TO-261AA |
Mounting Type: | Surface Mount |
Operating Temperature: | 0°C ~ 125°C |
Protection Features: | Over Current, Over Temperature |
Control Features: | -- |
PSRR: | 75dB (120Hz) |
Current - Quiescent (Iq): | 10mA |
Series: | -- |
Voltage Dropout (Max): | 1.2V @ 800mA |
Voltage - Output (Max): | -- |
Voltage - Output (Min/Fixed): | 2.85V |
Voltage - Input (Max): | 15V |
Number of Regulators: | 1 |
Output Type: | Fixed |
Output Configuration: | Positive |
Part Status: | Obsolete |
Packaging: | Tape & Reel (TR) |
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LD1117S28TR is one of the many voltage regulators supplied by STMicroelectronics, a semiconductor manufacturer and leader in component and communication systems. As part of the LD1117S Series of LDOs (Low Drop Out), the LD1117S28TR is a linear voltage regulator with a wide input voltage range and ultra-low dropout voltage. This series has been designed to meet the new power management requirements in industrial, automotive, and consumer applications, including powering microprocessors and low-dropout (LDO) voltage regulators.
The LD1117S28TR is a three-terminal, fixed output voltage regulator with a 500 mA output current capability. The regulator has an adjustable output voltage range from 1.25V up to 30V. The LD1117S28TR is a high-accuracy voltage source and provides excellent load and line regulation performance. It also offers an ultra-low dropout voltage of 40 mV at 1A load current and a low quiescent current of 20 μA.
The typical application field for the LD1117S28TR includes regulated power supply for a variety of digital and analog circuits, such as battery chargers, portable audio, PC motherboards, digital cameras, and telecommunication systems. This linear voltage regulator is also suitable for driving loads with transient high-load currents such as large LCD screens, laser diode drivers and electromechanical actuators.
The working principle of the LD1117S28TR is fairly simple. It compares the output voltage of the device with a precise internal reference voltage and adjusts the driving current to the control element to bring the output voltage to the reference level. The control element is usually a PNP pass transistor or a P-Channel MOSFET. When the output voltage rises above or falls below the set value, an error voltage is generated and an error amplifier is used to control the pass element, driving the output voltage back to the set value.
The LD1117S28TR utilizes a high-gain error amplifier that delivers superior line and load regulation and removes the need for output capacitors, providing a low cost and simple solution. The device provides excellent current limit accuracy and fast turn-on by operating the pass element in low impedance saturation mode. The device also features thermal shutdown protection to ensure that the device stays within safe operating conditions.
In summary, the LD1117S28TR is a high-accuracy linear voltage regulator, providing efficient and low-cost power management in a wide range of applications. It offers a 500 mA output current capability, adjustable output voltage range from 1.25V up to 30V and excellent noise performance. With its ultra-low dropout voltage and high load and line regulation performance, the LD1117S28TR is perfect for powering microprocessors, consumer electronics, and battery charger systems.
The specific data is subject to PDF, and the above content is for reference
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