Overview
The LM2575D2T-ADJ is a monolithic integrated circuit designed by onsemi, ideally suited for the easy and convenient design of a step-down switching regulator (buck converter). This device is part of the LM2575 series, which includes fixed output voltages of 3.3 V, 5.0 V, 12 V, and 15 V, as well as an adjustable output version. The LM2575D2T-ADJ is characterized by its high efficiency, wide input voltage range, and minimal requirement for external components, making it a versatile choice for various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Topology | Buck | |
| Input Voltage | 4.75 V to 40 V | V |
| Output Current (Max) | 1 A | A |
| Output Type | Adjustable | |
| Switching Frequency (Max) | 52 kHz | kHz |
| Operating Temperature Range | -40°C to +125°C | °C |
| Duty Cycle (Max) | 98% | % |
| Efficiency | 77% | % |
| No. of Outputs | 1 | |
| Quiescent Current | 9 mA | mA |
| Storage Temperature Range | -65°C to +150°C | °C |
| Moisture Sensitivity Level | 1 | |
| Package Style | TO-263-5 (D2PAK5) | |
| Mounting Method | Surface Mount |
Key Features
- 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
- Adjustable Version Output Voltage Range of 1.23 V to 37 V ±4% Maximum Over Line and Load Conditions
- Guaranteed 1.0 A Output Current
- Wide Input Voltage Range: 4.75 V to 40 V
- Requires Only 4 External Components
- 52 kHz Fixed Frequency Internal Oscillator
- TTL Shutdown Capability, Low Power Standby Mode
- High Efficiency
- Uses Readily Available Standard Inductors
- Thermal Shutdown and Current Limit Protection
- Moisture Sensitivity Level (MSL) Equals 1
- Pb-Free Packages are Available
Applications
The LM2575D2T-ADJ is suitable for a wide range of applications requiring efficient step-down voltage regulation. These include:
- Power supplies for electronic devices
- Industrial control systems
- Automotive systems (with NCV prefix for automotive and other applications requiring unique site and control change requirements)
- Telecommunication equipment
- Consumer electronics
The device's high efficiency, wide input voltage range, and minimal external component requirements make it an ideal choice for designing compact and reliable power supply solutions.
Q & A
- What is the input voltage range of the LM2575D2T-ADJ?
The input voltage range is from 4.75 V to 40 V.
- What is the maximum output current of the LM2575D2T-ADJ?
The maximum output current is 1 A.
- What is the switching frequency of the LM2575D2T-ADJ?
The switching frequency is fixed at 52 kHz.
- Does the LM2575D2T-ADJ require external frequency compensation?
No, external frequency compensation is not needed.
- What is the operating temperature range of the LM2575D2T-ADJ?
The operating temperature range is from -40°C to +125°C.
- What protection features does the LM2575D2T-ADJ have?
The device includes cycle-by-cycle current limiting, thermal shutdown, and external shutdown capability.
- How many external components are required for the LM2575D2T-ADJ?
Only 4 external components are required.
- Is the LM2575D2T-ADJ available in Pb-free packages?
- What is the moisture sensitivity level (MSL) of the LM2575D2T-ADJ?
The MSL is 1.
- Can the LM2575D2T-ADJ be used in automotive applications?
