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- L4977A - ST Microelectronics
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Manufacturer:ST Microelectronics
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ManyChip's Part#:MC5544404
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Category:DC to DC Converter
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Package:Multiwatt-15
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Datasheet:Datasheet 3D Model
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Description:Conv DC-DC 15V to 50V Step Down Single-Out 5.1V to 40V 7A 15Pin(15+Tab) MULTIWATT V
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Stock Locations:
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Availability:100 pcs In Stock
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MOQ:1 pcs
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Unit Price:$ 5.94
Updated at 01/11/2025 10:30:15(UTC+8)
Certifications
ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.
Description
- DESCRIPTION
- The L4977A is a stepdown monolithic power switching regulator delivering 7A at a voltage variable from 5.1 to 40V.
- Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4977A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter components.
- ■ 7A OUTPUT CURRENT
- ■ 5.1V TO 40V OUTPUT VOLTAGE RANGE
- ■ 0 TO 90% DUTY CYCLE RANGE
- ■ INTERNAL FEED-FORWARD LINE REGULATION
- ■ INTERNAL CURRENT LIMITING
- ■ PRECISE 5.1V ± 2% ON CHIP REFERENCE
- ■ RESET AND POWER FAIL FUNCTIONS
- ■ SOFT START
- ■ INPUT/OUTPUT SYNC PIN
- ■ UNDER VOLTAGE LOCK OUT WITH HYS TERETIC TURN-ON
- ■ PWM LATCH FOR SINGLE PULSE PER PERIOD
- ■ VERY HIGH EFFICIENCY
- ■ SWITCHING FREQUENCY UP TO 500KHz
- ■ THERMAL SHUTDOWN
- ■ CONTINUOUS MODE OPERATION
L4977A Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Through Hole |
| Number of Pins | 15 Pin |
| Case/Package | Multiwatt-15 |
| Supply Voltage (DC) | 50.0V (max) |
| Operating Voltage | 15V ~ 50V |
| Number of Outputs | 1 Output |
| Output Voltage | 5.1V ~ 40V |
| Output Current | 7 A |
| Number of Channels | 1 Channel |
| Output Power | 30 W |
| Switching Frequency | 200kHz ~ 500kHz |
| Topology | Buck |
| Input Voltage (Max) | 50 V |
| Input Voltage (Min) | 15 V |
| Output Voltage (Max) | 40 V |
| Output Voltage (Min) | 5.1 V |
| Output Current (Max) | 7 A |
| Operating Temperature (Max) | 150 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage | 15 V |
| Input Voltage | 15V ~ 50V |
| Show | |
| Size-Length | 19.6 mm |
| Size-Width | 5 mm |
| Size-Height | 10.7 mm |
| Operating Temperature | -40℃ ~ 150℃ (TJ) |
| Product Lifecycle Status | Active |
| Packaging | Tube |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
| ECCN Code | EAR99 |
Order guide
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charges, duties and taxes.
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- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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