
Allicdata Part #: | LM2825N-12/NOPB-ND |
Manufacturer Part#: |
LM2825N-12/NOPB |
Price: | $ 25.79 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG BUCK 12V 1A 24-DIP |
More Detail: | Buck Switching Regulator IC Positive Fixed 12V 1 O... |
DataSheet: | ![]() |
Quantity: | 7 |
1 +: | $ 23.44230 |
Voltage - Output (Min/Fixed): | 12V |
Base Part Number: | LM2825 |
Supplier Device Package: | 24-PDIP |
Package / Case: | 24-DIP (0.600", 15.24mm) |
Mounting Type: | Through Hole |
Operating Temperature: | -40°C ~ 85°C (TA) |
Synchronous Rectifier: | No |
Frequency - Switching: | 150kHz |
Current - Output: | 1A |
Voltage - Output (Max): | -- |
Series: | -- |
Voltage - Input (Max): | 40V |
Voltage - Input (Min): | 15V |
Number of Outputs: | 1 |
Output Type: | Fixed |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Part Status: | Obsolete |
Packaging: | Tube |
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An LM2825N-12/NOPB device is an integrated, high-performance, low-power, high-frequency step-down switching converter, widely used in the field of DC-DC power management and the development of compact thin-film batteries. It is suitable for a variety of voltage regulation applications, where it does not need high power output or limiting power consumption. It can also be used as an ultra-low power management solution, in order to reduce battery consumption and extend platform life. The LM2825N-12/NOPB is an excellent choice for battery-powered applications that require an adjustable supply voltage with ultra low-power consumption.
Key Features
- The integrated N-channel MOSFET allows smaller, thinner package
- The minimum on-time of 0.6µs allows wide regulating range, low quiescent current and low output noise
- The CS (Current Sense) pin senses current of the output MOSFET
- The PWM controller provides lossless control current of the MOSFET and the average output current is proportional to the output voltage at the CS pin
- The SS pin can minimize ripple current sensing on the output MOSFET
- The EN pin allows the device to be put into shutdown mode
- Support 300kHz~1.5MHz adjustable frequency
- Low quiescent current and shutdown current of ≤ 1µA
Application Fields
The LM2825N-12/NOPB is a high-performance, space-saving DC-DC switching regulator that can be used in a variety of applications, including mobile phones, ultra-low power mobile devices such as wearables, and digital cameras. Additionally, the LM2825N-12/NOPB is ideal for battery-powered applications to reduce power consumption and extend platform life. In order to maximize efficiency and minimize size, the switching converter can accept input voltages as low as 1.2V and achieve no-load power consumption of less than 1µA at output voltages down to 1.2V.
Working Principle
The LM2825N-12/NOPB DC-DC switching regulator uses a synchronous rectification scheme to reduce losses and allow for higher efficiency. It features an integrated N-channel MOSFET, low-side current sense (CS) pin and output voltage (VAUX) pin that allows for accurate current control and better thermal performance. The CS pin senses the current of the output MOSFET and the PWM (pulse width modulation) controller provides lossless control current of the MOSFET; this is done by adjusting the duty cycle of the switching frequency so that the average output current is proportional to the output voltage at the CS pin. The SS pin can minimize ripple current sensing on the output MOSFET and the EN pin allows the device to be put into shutdown mode.
The LM2825N-12/NOPB switching regulator works by converting the input voltage (VIN) to the output voltage (VAUX) through the high-performance N-channel MOSFET. The device is able to switch at high frequency, allowing very small, efficient components to fit within the device. The minimum on-time of 0.6µs enables a wide regulating range, low quiescent current and low output noise. The integrated synchronous rectifier provides high efficiency operation by allowing the LM2825N-12/NOPB device to conduct current both ways, which eliminates the need for a freewheeling diode.
Conclusion
The LM2825N-12/NOPB DC-DC switching regulator is a high-performance, low-power, high-frequency step-down switching converter which can be used in a variety of voltage regulation applications. It features an integrated N-channel MOSFET, low-side current sense pin, output voltage pin and adjustable switch frequency, as well as a PWM controller to provide lossless control current of the MOSFET. Additionally, the minimum on-time of 0.6µs allows for wide regulating range, low quiescent current and low output noise, making it an ideal choice for battery-powered applications.
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