Overview
The LM2575D2T-ADJG, produced by onsemi, is a monolithic integrated circuit designed for easy and convenient implementation of a step-down (buck) switching regulator. This device is part of the LM2575 series, which offers high efficiency and a wide range of output voltage options. The LM2575D2T-ADJG is particularly versatile, allowing for adjustable output voltage settings through the use of external resistors. It is suitable for various applications requiring a reliable and efficient power supply solution.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Vin) | 4.75 | - | 40 | V |
| Operating Junction Temperature Range (TJ) | -40 | - | 125 | °C |
| Output Voltage (Vout) - Adjustable Version | 1.23 | - | 37 | V |
| Output Current (Iout) | - | - | 1.0 | A |
| Oscillator Frequency (fosc) | 47 | 52 | 58 | kHz |
| Saturation Voltage (Vsat) at Iout = 1.0 A | 1.0 | - | 1.2 | V |
| Thermal Resistance, Junction-to-Ambient (RθJA) | - | - | 70 | °C/W |
| Thermal Resistance, Junction-to-Case (RθJC) | - | - | 5.0 | °C/W |
Key Features
- Adjustable output voltage range from 1.23 V to 37 V with ±4% maximum tolerance 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 (inductor, diode, input capacitor, and output capacitor).
- Fixed 52 kHz internal oscillator frequency.
- TTL shutdown capability with low power standby mode (typical standby current of 80 μA).
- High efficiency, especially at higher input voltages.
- Uses readily available standard inductors.
- Thermal shutdown and cycle-by-cycle current limiting for protection.
- AEC-Q100 qualified and PPAP capable for automotive and other critical applications.
Applications
The LM2575D2T-ADJG is suitable for a variety of applications requiring efficient and reliable step-down voltage regulation. These include:
- Automotive systems: Due to its AEC-Q100 qualification, it is ideal for use in automotive electronics.
- Industrial power supplies: Its high efficiency and wide input voltage range make it a good choice for industrial power supply designs.
- Consumer electronics: It can be used in various consumer electronic devices that require a compact and efficient power supply solution.
- Telecommunications: The device's reliability and efficiency make it suitable for use in telecommunications equipment.
Q & A
- What is the input voltage range of the LM2575D2T-ADJG?
The input voltage range is from 4.75 V to 40 V. - What is the maximum output current of the LM2575D2T-ADJG?
The maximum output current is 1.0 A. - How is the output voltage adjusted in the LM2575D2T-ADJG?
The output voltage is adjusted using two external resistors. - What is the oscillator frequency of the LM2575D2T-ADJG?
The oscillator frequency is fixed at 52 kHz. - Does the LM2575D2T-ADJG have built-in protection features?
Yes, it includes thermal shutdown and cycle-by-cycle current limiting for protection. - Is the LM2575D2T-ADJG suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other critical applications. - What is the typical standby current of the LM2575D2T-ADJG?
The typical standby current is 80 μA. - How many external components are required to implement the LM2575D2T-ADJG?
Only 4 external components are required: an inductor, a diode, an input capacitor, and an output capacitor. - What is the thermal resistance, junction-to-ambient (RθJA), of the LM2575D2T-ADJG?
The thermal resistance, junction-to-ambient (RθJA), is up to 70 °C/W. - Is the LM2575D2T-ADJG Pb-free?
Yes, the LM2575D2T-ADJG is a Pb-free device.
