Allicdata Part #: | MAX1802EHJ+T-ND |
Manufacturer Part#: |
MAX1802EHJ+T |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Maxim Integrated |
Short Description: | IC PWR SPLY STEP DOWN 32-TQFP |
More Detail: | - Controller/Converter, Digital Cameras Voltage Re... |
DataSheet: | MAX1802EHJ+T Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Obsolete |
Applications: | Controller/Converter, Digital Cameras |
Voltage - Input: | 2.5 V ~ 11 V |
Number of Outputs: | 5 |
Voltage - Output: | 1.25 V ~ 5.5 V |
Operating Temperature: | 0°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 32-TQFP |
Supplier Device Package: | 32-TQFP (5x5) |
Base Part Number: | MAX1802 |
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The MAX1802EHJ+T belongs to the special purpose voltage regulator category of power management integrated circuits (PMICs). It is intended for use in applications such as cellular phones and personal digital assistants (PDAs). The MAX1802EHJ+T is a high-efficiency switch-mode step-down DC-to-DC converter, with regulated output voltage levels of 2.5V, 3.3V, 4.2V, 4.9V and 5.5V.
The chip contains the integrated power switch (MOSFET) and the internal control logic necessary to operate the converter in the switch-mode; this allows it to achieve high efficiency while maintaining a compact package size. Also included are an internal compensation network and an over-voltage protection circuit. In addition, it also contains circuitry to modulate the on-time of the power switch, allowing current-mode control of the output voltage. As such, this device offers a complete, highly efficient and space-saving solution for providing regulated voltage to portable and battery-powered systems.
The MAX1802EHJ+T uses a buck- converter topology to step down and regulate the output voltage. In the converter, a high-side MOSFET switch is connected between the input voltage source and a smooth inductor. By cycling the switch on and off, the inductor stores energy in its magnetic field. In addition, an output capacitor is used to filter and store energy, ensuring a stable output voltage. As the load current rises and falls, the cycle width (or on-time) of the power switch is regulated to maintain the output voltage of the regulator.
The MAX1802EHJ+T offers a wide variety of features to enhance the efficiency and performance of the converter. These include a programmable switching frequency of up to 1MHz and an automatic low-power sleep mode for saving power during light loads. Furthermore, it offers thermal shutdown and cycle-by-cycle current limit protection for increased safety during operation. Finally, the chip is packaged in a small 24-pin TSSOP and comes with a range of features for design flexibility.
Overall, the MAX1802EHJ+T is an ideal solution for applications such as PDAs and cellular phones, where high efficiency and small size are key considerations. Its programmable switching frequency and automatically low-power sleep mode offer high efficiency, while its integrated control logic, internal compensation network and robust over-voltage protection circuits make it a reliable choice for a range of applications.
The specific data is subject to PDF, and the above content is for reference
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