FAN3180 − Single 2 A Low-Side Driver with 3.3 V LDO


The FAN3180 combines a high-speed low-side gate driver with a 3.3 V output Low Drop Out (LDO). The gate driver is rated to 2.8 A peak current at VDD of 12 V and is designed to drive an N-channel enhancement-mode MOSFET in low-side switching applications. The FAN3180 also integrates a 3.3 V, 15 mA LDO with tight voltage tolerance of ±1% at 25°C and ±2.5% of total variation for powering external microcontrollers.

Internal circuitry provides an Under-Voltage Lockout (UVLO) function by holding the output low until the supply voltage is within the operating range and the first full input pulse is detected. The FAN3180 has UVLO thresholds of 4.75 V VON and 4.55 V VOFF and a maximum standby supply current of 200 µA.

The driver delivers fast MOSFET switching performance to maximize efficiency in high-frequency power converter designs. It incorporates the MillerDrive™ architecture for the final output driver stage. This bipolar-MOSFET combination provides high peak current during the Miller plateau stage of the MOSFET turn-on / turn-off process to minimize switching loss, while providing rail-to-rail voltage swing and reverse-current capability. Thermal shutdown function is included as an additional safety feature.

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Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 FAN3180TSX Full Production
Green as of Jun 2012
$0.6  Details
1.3 x 3.0 x 1.7mm

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ESD (HBM) :  3000  V
RƟJA :  161  °C/W
RƟJC :  58  °C/W
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Gate Driver
  • Peak 2.8 A / 2.5 A Sink / Source at VDD = 12 V
  • 2.5 A Sink / 1.8 A Source at VOUT = 6 V
  • Non-Inverting Logic Configuration
  • TTL-Compatible Input Thresholds
  • 23 ns Typical Delay Time
  • 19 ns / 13 ns Rise and Fall Times with 1 nF Load
  • LDO
  • 3.3 V, 15 mA Output
  • ±1% at 25°C, ±2.5% Total Variation
  • General
  • -40°C to +125°C Operation Temperature
  • 5 V to 18 V Operating Range
  • VON / VOFF UVLO of 4.75 V / 4.55 V
  • 200 µA Maximum Standby Supply Current
  • Lead (Pb)-Free Green 5-Pin SOT23 Package
  • Applications

    • AC-DC Merchant Power Supply
    • AC-DC Merchant Power Supply - Desktop PC
    • AC-DC Merchant Power Supply - Office
    • AC-DC Merchant Power Supply - Servers & Workstations
    • AC-DC Merchant Power Supply - Video game console, flat Panel TV, DVR, STB
    • AC-DC Merchant Power Supply - Wired Communications
    • Consumer Appliances
    • DC-DC Merchant Power Supply
    • Fully Configured Entry Level PC Server
    • Lighting
    • Medical Electronics/Devices
    • Motion Control - Home Appliance
    • Other Consumer Electronics
    • Other Consumer Products
    • PC Server
    • Server
    • Test and Measurement

    Application Notes

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