LM3478MM
This device is a TSSOP package power supply controller with current mode operation."
Brands: Texas Instruments
Mfr.Part #: LM3478MM
Datasheet: LM3478MM Datasheet (PDF)
Package/Case: VSSOP (DGK)-8
RoHS Status:
Stock Condition: 5936 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomLM3478MM General Description
The LM3478 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 LM3478 can be operated at extremely high switching frequency in order to reduce the overall solution size. The switching frequency of the LM3478 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 LM3478 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
- 8-lead VSSOP-8 and SOIC-8 packages
- 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
Application
Specifications
Parameter | Value | Parameter | Value |
---|---|---|---|
Topology | Boost, Flyback, Forward, SEPIC | Vin (min) (V) | 2.97 |
Vin (max) (V) | 40 | Vout (min) (V) | 1.26 |
Vout (max) (V) | 500 | Regulated outputs (#) | 1 |
Switching frequency (min) (kHz) | 100 | Switching frequency (max) (kHz) | 1000 |
Iq (typ) (mA) | 2.7 | Features | Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Nonsynchronous rectification, Pre-Bias Start-Up |
Duty cycle (max) (%) | 100 | Rating | Catalog |
Operating temperature range (°C) | -40 to 125 |
Shipping
Shipping Type | Ship Fee | Lead Time | |
---|---|---|---|
DHL | $20.00-$40.00 (0.50 KG) | 2-5 days | |
Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 days | |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time:Shipping fee depend on different zone and country.
Payment
Terms of payment | Hand Fee | |
---|---|---|
Wire Transfer | charge US$30.00 banking fee. | |
Paypal | charge 4.0% service fee. | |
Credit Card | charge 3.5% service fee. | |
Western Union | charge US.00 banking fee. | |
Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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Step1 :Product
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Step2 :Vacuum packaging
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Step3 :Anti-static bag
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Step4 :Individual packaging
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Step5 :Packaging boxes
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Step6 :bar-code shipping tag
All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
We provide high quality products, thoughtful service and after sale guarantee
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We have rich products, can meet your various needs.
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Minimum order quantity starts from 1pcs.
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365 days quality guarantee for all products