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Part Details for L4977A by STMicroelectronics
Results Overview of L4977A by STMicroelectronics
- Distributor Offerings: (5 listings)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Available)
- Number of Functional Equivalents: (0 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
L4977A Information
L4977A by STMicroelectronics is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for L4977A
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
56P8358
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Newark | Power Management |Stmicroelectronics L4977A RoHS: Not Compliant Min Qty: 500 Package Multiple: 1 Date Code: 0 Container: Bulk | 0 |
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Buy Now | |
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ComSIT USA | 7A SWITCHING REGULATOR Switching Regulator, Voltage-mode, 11A, 500kHz Switching Freq-Max, BCDMOS, PZ... more ECCN: EAR99 RoHS: Compliant |
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RFQ | |
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DISTI #
SMC-L4977A
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Sensible Micro Corporation | AS6081 Certified Vendor, 1 Yr Warranty RoHS: Not Compliant Min Qty: 25 Lead time: 2 Weeks, 0 Days | 1205 |
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RFQ | |
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DISTI #
L4977A
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Avnet Silica | Conv DCDC Single Step Down 15V to 50V 15Pin15Tab MULTIWATT V (Alt: L4977A) RoHS: Compliant Min Qty: 500 Package Multiple: 25 Lead time: 143 Weeks, 0 Days | Silica - 0 |
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Buy Now | |
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DISTI #
L4977A
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EBV Elektronik | Conv DCDC Single Step Down 15V to 50V 15Pin15Tab MULTIWATT V (Alt: L4977A) RoHS: Compliant Min Qty: 25 Package Multiple: 25 Lead time: 143 Weeks, 0 Days | EBV - 0 |
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Buy Now |
Part Details for L4977A
L4977A CAD Models
L4977A Part Data Attributes
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L4977A
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
L4977A
STMicroelectronics
7 A switching regulator
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | STMICROELECTRONICS | |
| Part Package Code | ZFM | |
| Package Description | PLASTIC, POWER PACK-15 | |
| Pin Count | 15 | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | STMicroelectronics | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Control Mode | VOLTAGE-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 50 V | |
| Input Voltage-Min | 15 V | |
| Input Voltage-Nom | 35 V | |
| JESD-30 Code | R-PZFM-T15 | |
| JESD-609 Code | e3 | |
| Number of Functions | 1 | |
| Number of Terminals | 15 | |
| Output Current-Max | 11 A | |
| Output Voltage-Nom | 5.1 V | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | ZIP | |
| Package Equivalence Code | ZIP15,.2,.17TB | |
| Package Shape | RECTANGULAR | |
| Package Style | FLANGE MOUNT | |
| Qualification Status | Not Qualified | |
| Surface Mount | NO | |
| Switcher Configuration | BUCK | |
| Switching Frequency-Max | 500 kHz | |
| Technology | BCDMOS | |
| Terminal Finish | MATTE TIN | |
| Terminal Form | THROUGH-HOLE | |
| Terminal Pitch | 1.27 mm | |
| Terminal Position | ZIG-ZAG |
L4977A Frequently Asked Questions (FAQ)
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The L4977A can handle input voltages up to 40V, but it's recommended to keep it below 30V for optimal performance and reliability.
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To ensure stability, make sure to use a minimum output capacitance of 10uF, and a minimum ESR (Equivalent Series Resistance) of 0.1 ohms. Also, keep the input and output capacitors close to the IC and use a good quality PCB layout.
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The L4977A can deliver up to 1.5A of output current, but it's recommended to keep it below 1.2A for optimal performance and reliability.
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The output voltage of the L4977A can be adjusted by using a resistive divider network between the output pin and the adjust pin. The ratio of the resistors determines the output voltage, which can be calculated using the formula: Vout = 2.5V * (1 + R1/R2).
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The 'EN' pin is an enable input that allows the user to turn the regulator on or off. When the 'EN' pin is high, the regulator is enabled, and when it's low, the regulator is disabled.