peculiarity
Wide input voltage range: 4.5V to 42V
Internally compensated voltage mode control
Stable and low ESR ceramic capacitors
200mΩ N-channel MOSFETs
Output Voltage Options:
- ADJ (e.g. 1.285V low output)
-5.0 (fixed 5V output)
Feedback reference accuracy± 1.5%
The switching frequency is 500 kHz
Operating junction temperature range from -40°C to 125°C
Precision enable pins
Integrated start diode
Integrated soft start
Full WEBENCH ® enabled
Step-down and inverted step-down - boosting applications
LM22675Q is an automotive-grade product, certified by AEC - Q100 class (operating junction temperature from -40°C to +125°C).
illustrate
The voltage regulators of the LM22675 series are monolithic integrated circuits, which are the positive functions of step-down (buck-buck) switching regulators that can drive 1A loads, and have excellent line and load regulation characteristics. The high efficiency (> 90%) is achieved by using a low-resistance N-channel MOSFET. The series consists of a fixed 5V output and an adjustable version.
The SIMPLE SWITCHER ® concept offers an easy-to-use complete design, using minimal external components and the national semiconductor WEBENCH ® design tool. National Semiconductor's WEBENCH ® tool includes functions such as external component calculations, electrical simulation, thermal simulation, and simple design, construction, and board design. The switching clock frequency is controlled by an internal fixed-frequency oscillator at 500 kHz. The LM22675 series also features built-in thermal shutdown, current limiting, and enable control inputs, allowing up/down adjustment of static current to standby mode with a low power of 25μA.
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Industrial control
Telecommunications and data communication systems
Embedded systems
Automotive telematics and body electronics
Conversion of standard 24V, 12V, and 5V input voltage rails