LM3478QMM/NOPB
Active40-V WIDE VIN LOW-SIDE N-CHANNEL CONTROLLER FOR SWITCHING REGULATORS WITH 10-ΜA SHUTDOWN CURRENT
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LM3478QMM/NOPB
Active40-V WIDE VIN LOW-SIDE N-CHANNEL CONTROLLER FOR SWITCHING REGULATORS WITH 10-ΜA SHUTDOWN CURRENT
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM3478QMM/NOPB |
|---|---|
| Clock Sync | False |
| Control Features | Frequency Control, Enable |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Up, Step-Up/Step-Down |
| Grade | Automotive |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 8-MSOP, 8-TSSOP |
| Package / Case | 3 mm |
| Package / Case [custom] | 0.118 in |
| Qualification | AEC-Q100 |
| Synchronous Rectifier | False |
| Topology | Flyback, SEPIC, Boost |
| Voltage - Supply (Vcc/Vdd) [Max] | 40 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.97 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Arrow | N/A | 1000 | $ 1.69 | |
| 2000 | $ 1.61 | |||
| 3000 | $ 1.60 | |||
| 5000 | $ 1.55 | |||
| Digikey | Cut Tape (CT) | 1 | $ 3.24 | |
| 10 | $ 2.91 | |||
| 25 | $ 2.75 | |||
| 100 | $ 2.38 | |||
| 250 | $ 2.26 | |||
| 500 | $ 2.03 | |||
| Digi-Reel® | 1 | $ 3.24 | ||
| 10 | $ 2.91 | |||
| 25 | $ 2.75 | |||
| 100 | $ 2.38 | |||
| 250 | $ 2.26 | |||
| 500 | $ 2.03 | |||
| Tape & Reel (TR) | 1000 | $ 1.71 | ||
| 2000 | $ 1.62 | |||
| 5000 | $ 1.56 | |||
| Texas Instruments | SMALL T&R | 1 | $ 2.44 | |
| 100 | $ 2.14 | |||
| 250 | $ 1.50 | |||
| 1000 | $ 1.21 | |||
Description
General part information
LM3478Q-Q1 Series
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.
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.
Documents
Technical documentation and resources
