Overview
The L4976D013TR is a step-down monolithic power switching regulator produced by STMicroelectronics. This device delivers up to 1A of current at output voltages ranging from 3.3V to 50V, which can be selected using a simple external divider. Realized in BCD mixed technology, the L4976D013TR utilizes an internal power D-MOS transistor with a typical Rds(ON) of 0.25Ω to achieve high efficiency and high switching speed. The regulator operates within an input voltage range of 8V to 55V and supports a switching frequency up to 300kHz, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Min | 8.0 | V |
| Input Voltage Max | 55.0 | V |
| Operating Temperature Min | -40.0 | °C |
| Operating Temperature Max | 150.0 | °C |
| Output Voltage Range | 3.3 to 50 | V |
| Maximum Output Current | 1 A | A |
| Switching Frequency Max | 300 kHz | kHz |
| Package Name | SO-16W | |
| RoHS Compliance | Ecopack3 | |
| Grade | Industrial |
Key Features
- Up to 1A step-down converter
- Operating input voltage from 8V to 55V
- Precise 5.1V reference voltage
- Output voltage adjustable from 0.5V to 50V
- Switching frequency adjustable up to 300kHz
- Voltage feedforward regulation
- Zero load current operation
- Internal current limiting (pulse-by-pulse and hiccup mode)
- Protection against feedback disconnection
- Thermal shutdown
Applications
The L4976D013TR is suitable for a variety of applications, including:
- Automotive systems requiring high reliability and performance
- Industrial power supplies where efficiency and high switching speed are crucial
- General DC-DC conversion in electronic devices where adjustable output voltage is necessary
Q & A
- What is the maximum output current of the L4976D013TR?
The maximum output current is 1A.
- What is the input voltage range for the L4976D013TR?
The input voltage range is from 8V to 55V.
- How is the output voltage adjusted on the L4976D013TR?
The output voltage can be adjusted using a simple external divider.
- What is the maximum switching frequency of the L4976D013TR?
The maximum switching frequency is up to 300kHz.
- Does the L4976D013TR have built-in protection features?
- What package types are available for the L4976D013TR?
The device is available in SO-16W for SMD assembly and DIP8 for standard assembly.
- Is the L4976D013TR RoHS compliant?
- What is the operating temperature range for the L4976D013TR?
The operating temperature range is from -40°C to 150°C.
- Does the L4976D013TR support zero load current operation?
- What is the typical Rds(ON) of the internal power D-MOS transistor in the L4976D013TR?
The typical Rds(ON) is 0.25Ω.
