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LM3477AMM/NOPB is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is LM3477 HIGH EFFICIENCY HIGH-SIDE. Review the specifications below when checking this part for your BOM.
DC DC Switching Controllers specifications for LM3477AMM/NOPB
- Description：LM3477 HIGH EFFICIENCY HIGH-SIDE
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck, Buck-Boost
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：2.97V ~ 35V
- Frequency - Switching：500kHz
- Duty Cycle (Max)：93%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-VSSOP
- Grade：-
- Qualification：-
DC DC Switching Controllers datasheet and documents for LM3477AMM/NOPB
DC DC Switching Controllers Overview
The LM3477AMM/NOPB is a high-efficiency, high-side N-channel controller for switching regulators manufactured by Texas Instruments. It operates with a supply voltage range of 2.97V to 35V and supports a fixed switching frequency of 500kHz. The device features adjustable output configuration and low quiescent current of 5uA. It includes cycle-by-cycle overcurrent protection and is housed in an 8-VSSOP package.
DC DC Switching Controllers Feature Summary
- High-side N-channel control architecture
- Integrated cycle-by-cycle overcurrent protection
- Low quiescent current operation
DC DC Switching Controllers Applications
- DC-DC buck converter designs
- Buck-boost regulator topologies
- High-efficiency power management systems
DC DC Switching Controllers Procurement Notes
Verify the manufacturer designation as Texas Instruments, as National Semiconductor was acquired. Confirm the specific suffix NOPB indicates lead-free compliance. Ensure the package type matches the required 8-VSSOP footprint for your PCB layout. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.
DC DC Switching Controllers Selection Notes
Select this component for applications requiring high-side drive capabilities with integrated protection. The 500kHz frequency allows for compact passive component sizing. Verify input voltage stability within the 2.97V to 35V range. Consider thermal performance in the VSSOP package for your specific power dissipation requirements.
DC DC Switching Controllers Part Context
This part belongs to the LM3477 series of high-efficiency controllers. It is designed for driving external N-channel MOSFETs in synchronous or asynchronous configurations. The device integrates essential control loops for stable regulation in various DC-DC converter topologies.
DC DC Switching Controllers Replacement Considerations
The LM3477AMM is the non-rohs-compliant predecessor. Verify functional pinout compatibility if substituting. No other direct cross-references are confirmed in public documentation.
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