The L4978D is a step-down switching regulator capable of delivering up to 2A with an adjustable output voltage ranging from 3.3V to 50V. It operates within a wide input voltage range of 8V to 55V and features a maximum switching frequency of 300KHz. The device incorporates several protective features including pulse-by-pulse current limiting, hiccup mode for short circuit protection, thermal shutdown, and a soft-start function. It is available in a SO16W package suitable for surface mount assembly. The L4978D is designed for applications requiring efficient voltage regulation with low power dissipation and high reliability.
STMicroelectronics L4978D Buck Converter
STMicroelectronics L4978D Buck Converter
STMicroelectronics L4978D Buck Converter
IC REG BUCK ADJUSTABLE 2A 16SOIC
"Buck Switching Regulator IC Positive Adjustable 3.3V 1 Output 2A 16-SOIC (0.295"", 7.50mm Width)"
Manufacturer: STMicroelectronics
Win Source Part Number: 088844-L4978D
Packaging: Reel - TR
Mounting: SMD (SMT)
Output Type: Adjustable
Topology: Buck
Frequency - Switching: 100kHz to 300kHz
Number of Outputs: 1
Synchronous Rectifier: No
Output Current: 2A
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 150°C (TJ)
Case / Package: 16-SO
Purpose: Step-Down
Maximum Input Voltage: 55V
Nominal Output Voltage (Min/Fixed): 3.3V
Maximum Output Voltage: 50V
Minimum Input Voltage: 8V
Is this a common-used part?: Yes
Popularity: High
Fake Threat In the Open Market: 51 pct.
Supply and Demand Status: Balance
IC REG BUCK ADJUSTABLE 2A 16SOIC
Switching Voltage Regulators 3.3 to 50V Step-Down
Buck Switching Regulator IC Positive Adjustable 3.3V 1 Output 2A 16-SOIC (0.295", 7.50mm Width)
IC REG BUCK ADJUSTABLE 2A 16SOIC
| RS Components, Ltd. | RS Components, Ltd. | ODG (Origin Data Global) | DigiKey | Win Source Electronics | Lingto Electronic Limited | VAST STOCK CO., LIMITED | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|---|---|---|
| Product Category | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | 6868237 | 6868237P | L4978D | 497-5794-5-ND | 088844-L4978D | L4978D | L4978D | L4978D | L4978D |
| Product Name | Switching Regulators | Switching Regulators | Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - L4978D | PMIC - Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators |
| Configuration / Function | Buck; Boost | Buck | Buck | Buck | |||||
| Output Voltage Type | Adjustable / Variable | Adjustable / Variable | Adjustable / Variable | Adjustable / Variable; Adjustable | Adjustable / Variable | Adjustable / Variable; Adjustable | |||
| Package Type | SOIC; Other; Soic w | SOIC; Other; 16-SOIC (0.295", 7.50mm Width) | SOIC; Other; "16-SOIC (0.295"", 7.50mm Width)" | Other; 16-SO | SOIC; Other; 16-SOIC (0.295\", 7.50mm Width) | SOIC | |||
| IOUT | 2 amps | 2 amps | 2 amps | 2 amps | 2 amps | 2 amps | 2 amps | 2 amps | |
| Efficiency | 87 % | 87 % |
