All trademarks are the property of their respective owners.
DescriptionThe LM3478Q-Q1 is a versatile Low-Side N-Channel MOSFET controller for switchingregulators. It is suitable for use in topologies requiring a low side MOSFET, such as boost,flyback, SEPIC, etc. Moreover, the LM3478Q-Q1 can be operated at extremely high switching frequencyin order to reduce the overall solution size. The switching frequency of the LM3478Q-Q1 can beadjusted to any value between 100 kHz and 1 MHz by using a single external resistor. Current modecontrol provides superior bandwidth and transient response, besides cycle-by-cycle currentlimiting. Output current can be programmed with a single external resistor.
The LM3478Q-Q1 has built in features such as thermal shutdown, short-circuit protection,over voltage protection, etc. Power saving shutdown mode reduces the total supply current to 5 μAand allows power supply sequencing. Internal soft-start limits the inrush current atstart-up.
Feature
- LM3478Q-Q1 is AEC-Q100 Qualified and Manufactured on an Automotive GradeFlow
- 8-leadVSSOP-8
- Internal Push-Pull Driver With 1-A Peak CurrentCapability
- Current Limit and ThermalShutdown
- Frequency Compensation Optimized With a Capacitor and aResistor
- Internal Soft Start
- Current Mode Operation
- Undervoltage Lockout WithHysteresis
- Create a Custom Design Using the LM3478 with theWEBENCHPower Designer
All trademarks are the property of their respective owners.
DescriptionThe LM3478Q-Q1 is a versatile Low-Side N-Channel MOSFET controller for switchingregulators. It is suitable for use in topologies requiring a low side MOSFET, such as boost,flyback, SEPIC, etc. Moreover, the LM3478Q-Q1 can be operated at extremely high switching frequencyin order to reduce the overall solution size. The switching frequency of the LM3478Q-Q1 can beadjusted to any value between 100 kHz and 1 MHz by using a single external resistor. Current modecontrol provides superior bandwidth and transient response, besides cycle-by-cycle currentlimiting. Output current can be programmed with a single external resistor.
The LM3478Q-Q1 has built in features such as thermal shutdown, short-circuit protection,over voltage protection, etc. Power saving shutdown mode reduces the total supply current to 5 μAand allows power supply sequencing. Internal soft-start limits the inrush current atstart-up.
