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ST L4978D
Buck Switching Regulator IC Positive Adjustable 3.3V 1 Output 2A 16-SOIC (0.295", 7.50mm Width)
Brands: Stmicroelectronics
Mfr.Part #: L4978D
Datasheet: L4978D Datasheet (PDF)
Package/Case: SO-16W
Product Type: Switching Voltage Regulators
RoHS Status:
Stock Condition: 7974 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomL4978D General Description
The L4978 is a step down monolithic power switching regulator delivering 2A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdsonof 0.25Ω) to obtain very high efficency and high switching speed.A switching frequency up to 300KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 50V cover the majority of today’s applications. Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, soft-start, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.The device is available in plastic dual in line, DIP-8 for standard assembly, and SO16W for SMD assembly.
Features
- PROTECTION AGAINST FEEDBACK DISCONNECTION
- INHIBIT FOR ZERO CURRENT CONSUMPTION
- SOFT START FUNCTION
- THERMAL SHUTDOWN
- ZERO LOAD CURRENT OPERATION
- VOLTAGE FEEDFORWARD
- UP TO 2A STEP DOWN CONVERTER
- PRECISE 3.3V (±1%) INTERNAL REFERENCE VOLTAGE
- OPERATING INPUT VOLTAGE FROM 8V TO 55V
- SWITCHING FREQUENCY ADJUSTABLE UP TO 300KHz
- INTERNAL CURRENT LIMITING (PULSE-BYPULSE AND HICCUP MODE)
- OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Input Voltage Min Volt | 8.0 | Input Voltage Max Volt | 55.0 |
| Operating Temp Min Celsius | -40.0 | Operating Temp Max Celsius | 150.0 |
| ECCN US | EAR99 | ECCN EU | NEC |
| Packing Type | Tube | RoHs compliant | Ecopack1 |
| Grade | Industrial |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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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 | |
|---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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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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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.
Part points
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The L4978D chip is a voltage regulator control IC used in electronic devices. It is designed for high current and high-efficiency power supply applications. The chip offers features such as overcurrent protection, thermal shutdown, and soft start to ensure stable and reliable operation of the power supply. It is widely used in various industries, including automotive, industrial, and consumer electronics.
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Features
The L4978D is a step-down switching voltage regulator with an integrated power MOSFET. It has a wide input voltage range, adjustable output voltage, high current capability, and built-in protection features such as overcurrent and thermal shutdown. It is suitable for various applications, including industrial and automotive systems. -
Pinout
The L4978D is a 24-pin voltage regulator IC. The pinout and functions of this IC include inputs for the input voltage, feedback control, and compensation. It also has outputs for the regulated voltage, power good signal, and reference voltage. Additional pins include enable and shutdown signals, as well as protection and thermal control functions. -
Manufacturer
The manufacturer of the L4978D is STMicroelectronics. It is a multinational semiconductor company. -
Application Field
The L4978D is a switching regulator IC used in power supply applications. It can be used in numerous areas such as industrial control systems, telecommunications, consumer electronics, and automotive applications where efficient voltage regulation is required. -
Package
The L4978D chip package type is DIP (Dual In-Line Package). It has a 20-pin form and a size of 9.4mm x 6.6mm.
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