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LM2724AM/NOPB
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Product Detailed Parameters
- Description：HALF BRIDGE BASED MOSFET DRIVER
- Series：-
- Mfr：National Semiconductor
- Package：Tube
- Driven Configuration：Half-Bridge
- Channel Type：Synchronous
- Number of Drivers：2
- Gate Type：MOSFET (N-Channel)
- Voltage - Supply：4.3V ~ 6.8V
- Logic Voltage - VIL, VIH：-
- Current - Peak Output (Source, Sink)：3A, 3.2A
- Input Type：Non-Inverting
- Rise / Fall Time (Typ)：17ns, 12ns
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
- High Side Voltage - Max (Bootstrap)：28 V
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Overview
The LM2724AM/NOPB is a synchronous step-down DC-DC converter from National Semiconductor, designed for high-efficiency power management in portable applications. It integrates two N-channel MOSFETs and operates with an input voltage range of 2.7V to 5.5V. The device delivers up to 1.5A output current with a fixed switching frequency of 1.2MHz. Key electrical parameters include a quiescent current of 30µA and a shutdown current of 1µA. It features adjustable output voltage via external resistors, offering regulation accuracy within 1%. The component supports continuous conduction mode (CCM) and discontinuous conmission mode (DCM) operation.
Feature Summary
- Integrated synchronous rectification with dual N-channel MOSFETs for enhanced efficiency
- Fixed 1.2MHz switching frequency enabling compact passive component selection
- Low quiescent current design optimizing battery life in portable devices
- Adjustable output voltage capability through external resistor network
Applications
- Portable consumer electronics requiring efficient power conversion
- Battery-powered systems needing low standby current consumption
- Embedded applications with space-constrained PCB layouts
- General-purpose DC-DC conversion for microprocessor supplies
Procurement Notes
Verify the NOPB suffix indicates lead-free compliance per RoHS standards. Confirm package type matches your PCB footprint requirements. Ensure thermal dissipation capabilities align with your application's power density needs. Check for any specific handling instructions related to electrostatic discharge sensitivity during assembly processes.
Selection Notes
Consider the input voltage range compatibility with your power source. Evaluate the required output current against the 1.5A maximum rating. Assess thermal performance under expected load conditions. Verify that the 1.2MHz frequency suits your electromagnetic interference constraints and passive component availability.
Part Context
The LM2724 series represents National Semiconductor's approach to efficient power management solutions. This model specifically targets applications requiring compact size and high efficiency. The AM variant denotes commercial temperature range operation. The NOPB designation confirms environmental compliance without halogenated materials.
Replacement Considerations
Direct replacements may include other synchronous buck converters from the same manufacturer family. Cross-reference pinout compatibility before substitution. Verify equivalent electrical specifications including input voltage range and output current capacity. Consider thermal characteristics and package dimensions for mechanical fit.
