LM3481QMM/NOPB Part Information

Details for LM3481QMM/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs

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Part Description

The LM3481 device is a versatile Low-Side N-FET high-performance controller for switching regulators. The device is designed for use in Boost, SEPIC and Flyback converters and topologies requiring a lowside FET as the primary switch. The LM3481 device can be operated at very high switching frequencies to reduce the overall solution size. The switching frequency of the LM3481 device can be adjusted to any value between 100kHz and 1MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response in addition to cycle-by-cycle current limiting. Current limit can be programmed with a single external resistor. The LM3481 device has built-in protection features such as thermal shutdown, short-circuit protection and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5 µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up. Integrated current slope compensation simplifies the design and, if needed for specific applications, can be increased using a single resistor.

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Part Features

  • 10-Lead VSSOP Package
  • Adjustable Undervoltage Lockout With Hysteresis
  • Create a Custom Design Using the LM3481 with
  • Current Limit and Thermal Shutdown
  • Current Mode Operation
  • Frequency Compensation Optimized With a Capacitor and a Resistor
  • Internal Push-Pull Driver With 1-A Peak Current Capability
  • Internal Softstart
  • Key Specifications u2013 Wide Supply Voltage Range of 2.97 V to 48 V u2013 100-kHz to 1-MHz Adjustable and Synchronizable Clock Frequency u2013 u00b11.5% (Over Temperature) Internal Reference u2013 10-u00b5A Shutdown Current (Over Temperature)
  • LM3481QMM are Automotive-Grade Products That are AEC-Q100 Grade 1 Qualified (u201340u00b0C to +125u00b0C Operating Junction Temperature)
  • Pulse Skipping at Light Loads

Part Specifications

Driver Configuration Low Side
Peak Output Current 1A
Supply Voltage Min 2.97V
Supply Voltage Max 48V
Driver Case Style VSSOP
No. of Pins 10Pins
Input Delay 25ns
Output Delay 25ns
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • MOSFET DRIVER, LOW SIDE, 1A, VSSOP-10; Driver Configuration:Low Side; Peak Output Current:1A; Supply Voltage Min:2.97V; Supply Voltage Max:48V; Driver Case Style:VSSOP; No. of Pins:10Pins; Input Delay:25ns; Output Delay:25ns; RoHS Compliant: Yes | Newark Electronics
  • 2.97-V to 48-V high-efficiency controller for boost, SEPIC and flyback, AEC-Q100 qualified | Texas Instruments

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