Overview
The L5972D013TR from STMicroelectronics is a step-down monolithic power switching regulator designed to deliver high efficiency and reliability in various power management applications. This device features a minimum switch current limit of 2A, enabling it to supply more than 1.5A DC current to the load, depending on the application conditions. The output voltage is adjustable from 1.235V to 35V, making it versatile for a wide range of applications. The regulator uses an internal P-Channel D-MOS transistor with a typical Rdson of 250mΩ, minimizing the need for external components. An internal oscillator sets the switching frequency at 250kHz, and the device operates with an input voltage range of 4.4V to 36V, making it suitable for 5V bus applications in computer-related systems.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Number | L5972D013TR |
| Package | SOIC-8 |
| Output Current Limit | 2A |
| Output Voltage Range | 1.235V to 35V |
| Input Voltage Range | 4.4V to 36V |
| Switching Frequency | 250kHz |
| Typical Rdson | 250mΩ |
| Operating Junction Temperature Range | -40°C to 150°C |
| Thermal Resistance Junction-Ambient | 65°C/W |
Key Features
- 2A internal switch
- Output voltage adjustable from 1.235V to 35V
- Operating input voltage from 4.4V to 36V
- 250kHz internally fixed frequency
- Internal current limiting
- Low dropout operation: 100% duty cycle
- Voltage feedforward
- Zero load current operation
- Protection against feedback disconnection
- Thermal shutdown
Applications
The L5972D013TR is suitable for a variety of applications, including:
- Consumer electronics: Set-top boxes, DVD players, TVs, VCRs, car radios, LCD monitors
- Networking: XDSL, modems, DC-DC modules
- Computer systems: Printers, audio/graphic cards, optical storage, hard disk drives
- Industrial applications: Battery chargers, car battery systems, DC-DC converters
Q & A
- What is the output current limit of the L5972D013TR?
The output current limit of the L5972D013TR is 2A. - What is the adjustable output voltage range of the L5972D013TR?
The output voltage can be adjusted from 1.235V to 35V. - What is the input voltage range for the L5972D013TR?
The input voltage range is from 4.4V to 36V. - What is the switching frequency of the L5972D013TR?
The switching frequency is internally fixed at 250kHz. - What type of transistor is used as the switching element in the L5972D013TR?
The device uses an internal P-Channel D-MOS transistor. - What is the typical Rdson of the switching transistor?
The typical Rdson is 250mΩ. - Does the L5972D013TR have thermal shutdown protection?
Yes, it has thermal shutdown protection. - What is the operating junction temperature range of the L5972D013TR?
The operating junction temperature range is -40°C to 150°C. - What are some common applications for the L5972D013TR?
Common applications include consumer electronics, networking, computer systems, and industrial applications. - What package type is the L5972D013TR available in?
The L5972D013TR is available in an SOIC-8 package.
