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LM3478QMMX/NOPB
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LM3478QMMX/NOPB Overview
The LM3478Q-Q1 is a versatile Low-Side N-Channel MOSFET controller for switching regulators. 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 frequency in order to reduce the overall solution size. The switching frequency of the LM3478Q-Q1 can be adjusted to any value between 100 kHz and 1 MHz by using a single external resistor. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. 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 μA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.
Features
- LM3478Q-Q1 is AEC-Q100 Qualified and Manufactured on an Automotive Grade Flow
- 8-lead VSSOP-8
- Internal Push-Pull Driver With 1-A Peak Current Capability
- Current Limit and Thermal Shutdown
- Frequency Compensation Optimized With a Capacitor and a Resistor
- Internal Soft Start
- Current Mode Operation
- Undervoltage Lockout With Hysteresis
- Create a Custom Design Using the LM3478 with the WEBENCH Power Designer
Product Parameters
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genericPartNumber
LM3478Q-Q1
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partDescription
40-V wide VIN low-side N-channel controller for switching regulators with 10-μA shutdown current
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statusDescription
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
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packageQtyCarrier
3500|LARGE T&R
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orderablePartNumber
LM3478QMMX/NOPB
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statusDisplay
ACTIVE
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packageQuantity
3500
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packagePins
VSSOP (DGK)|8
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