Allicdata Part #: | LM21212AMHX-1/NOPB-ND |
Manufacturer Part#: |
LM21212AMHX-1/NOPB |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG BUCK FREQ SYNC 20-TSSOP |
More Detail: | Switching Regulator IC 20-PowerTSSOP (0.173", ... |
DataSheet: | LM21212AMHX-1/NOPB Datasheet/PDF |
Quantity: | 1000 |
Specifications
Voltage - Output (Min/Fixed): | -- |
Base Part Number: | LM21212 |
Supplier Device Package: | 20-HTSSOP |
Package / Case: | 20-PowerTSSOP (0.173", 4.40mm Width) |
Mounting Type: | Surface Mount |
Operating Temperature: | -- |
Synchronous Rectifier: | -- |
Frequency - Switching: | -- |
Current - Output: | -- |
Voltage - Output (Max): | -- |
Series: | -- |
Voltage - Input (Max): | -- |
Voltage - Input (Min): | -- |
Number of Outputs: | -- |
Output Type: | -- |
Topology: | -- |
Output Configuration: | -- |
Function: | -- |
Part Status: | Obsolete |
Packaging: | Tape & Reel (TR) |
Description
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LM21212AMHX-1/NOPB Application Field and Working Principle
Introduction
The LM21212AMHX-1/NOPB is a high frequency, integrated step-down converter used for providing a low power, regulated interface between a higher input voltage source and a low voltage processor. This converter has a wide range of applications, primarily in data and power processing, commercial and automotive applications, as well as battery-backed designs. The converter achieves high efficiency, low ripple and low noise operation with optimal thermal design.Features and Benefits
The LM21212AMHX-1/NOPB converter offers a variety of features and benefits:- Wide voltage range: With an input voltage range of 6V-28V, the converter is able to support a wide variety of power and voltage sources. This allows for greater flexibility of design for the engineer.
- High efficiency: The LM21212AMHX-1/NOPB yields up to 96% efficiency in most applications. This high efficiency results in low power dissipations which enable the converter to operate over a wide temperature range.
- Low output ripple: The converter is able to maintain extremely low output ripple levels, typically below 30mV, which results in improved system performance.
- Low component cost: The LM21212AMHX-1/NOPB\'s integrated features, such as converter enable control, over-voltage protection and skip-cycle mode, also enable the designer to reduce component costs.
Applications
The LM21212AMHX-1/NOPB integrated step-down converter is suitable for a number of data processing, commercial, and automotive applications that require a low power and reliable voltage regulation. Some of these applications include:- Data processing applications: The LM21212AMHX-1/NOPB can be used to provide a power supply to processors used in cellular phones, laptops, set-top boxes, DVD players and PDAs.
- Commercial applications: The converter is used to provide regulated voltages for processor and switching power supplies in such applications as servers, industrial controllers, medical equipment and LED lighting.
- Automotive applications: The LM21212AMHX-1/NOPB is used in vehicle battery and powertrain systems, such as electronic power steering and antilock braking systems.
- Battery-backed designs: The LM21212AMHX-1/NOPB is often used in designs that require battery backup for time-sensitive tasks such as alarms and surveillance systems.
Working Principle
The LM21212AMHX-1/NOPB integrated step-down converter works on the principle of Pulse Width Modulation (PWM). The converter\'s switching frequency is determined by an external resistor and is adjustable from 200kHz to 1.5MHz to accommodate different power requirements.The input voltage supplied to the converter is compared to a reference voltage, generating an error signal that is used to set the duty cycle of the switched duty cycle. The output voltage is then regulated by maintaining this duty cycle. Furthermore, the converter can be enabled or disabled with an external control signal, and can operate in skip-cycle mode to reduce output ripple and power consumption at low loads.The specific data is subject to PDF, and the above content is for reference
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