UC2825AMDWREP Integrated Circuits (ICs)

Frequency - Switching:	400kHz ~ 1MHz
Base Part Number:	UC2825
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Operating Temperature:	-55°C ~ 125°C (TA)
Control Features:	Current Limit, Frequency Control, Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	85%
Series:	--
Voltage - Supply (Vcc/Vdd):	8.4 V ~ 22 V
Output Phases:	1
Number of Outputs:	2
Topology:	Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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UC2825AMDWREP Application Field and Working Principle

UC2825AMDWREP is a PMIC voltage regulator belonging to the DC DC switching controller family. It is a current-mode (CM) pulse-width modulation (PWM) controller which complexifies circuit designs by helping to reduce heat, power consumption and component count.The UC2825AMDWREP can be used in applications requiring a wide range of output voltages, ranging from 5V to 36V. It is frequently used in mobile computing devices such as laptops and tablets.The UC2825AMDWREP is implemented in various types of switching regulators, including buck, boost, flyback, and SEPIC. It uses a CM control system that adjusts the switching frequency in response to changes in the external components and loads. This helps to maintain the desired output voltage. In addition, it has temperature protection, short-circuit protection, and built-in diagnostic functions.The advantages of the UC2825AMDWREP include high efficiency, small package size, and low power consumption. Moreover, precise current-mode regulation reduces the number of external components, providing low cost and high performance.The working principle of the UC2825AMDWREP is as follows:Step 1: A precise reference voltage is generated by the internal voltage reference. Step 2: The output voltage is sensed by the voltage error amplifier.Step 3: The difference in voltages is fed to the current control comparator, which converts the difference into a duty-cycle.Step 4: The duty-cycle is then fed to the MOSFET switching devices, controlling the output voltage.Step 5: The output voltage is monitored by the voltage feedback loop to improve stability.The UC2825AMDWREP is a powerful, low-cost and easy-to-use PMIC voltage regulator. It is ideal for reducing component count, saving power, and achieving high efficiency in mobile computing devices such as laptops and tablets. The precise current-mode regulation ensures consistent output, and the built-in diagnostic functions makes it a reliable system for long-term use. By investing in UC2825AMDWREP, manufacturers can develop cost-effective, efficient, and safe mobile products.

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