LM22676MR-5.0

• Wide input voltage range: 4.5V to 42V
• Internally compensated voltage mode control
• Stable and low ESR ceramic capacitors
• 100mΩ 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, adjustable between 200 kHz and 1 MHz
• -40°C to 125°C operating junction temperature range
• Precision enable pins
• Integrated starter diode
• Integrated soft start
• Full WEBENCH ® enable
• Buck and reversed-phase buck-boost applications
• LM22677Q is automotive-grade and AEC-Q100 qualified (-40°C to +125°C operating junction temperature)

illustrate

The LM22677 Series regulators are monolithic integrated circuits that provide step-down switching regulators capable of driving excellent line and load regulation characteristics with 5A load (buck) all the positive features. 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.

SIMPLE SWITCHER ® The concept offers an easy-to-use complete design using a minimum number of external components and WEBENCH for national semiconductors ® Design tools. WEBENCH of National Semiconductor ® Tools include features such as external component calculations, electrical simulation, thermal simulation, and simple design, construction, and other boards. The switching clock frequency is made by an internal fixed-frequency oscillator, which is 500 kHz. The switching frequency can also be adjusted by an external resistor or by external clock synchronization up to 1MHz. It can also automatically synchronize multiple regulators to share the same switching frequency. The LM22677 series also features built-in thermal shutdown, current limiting, and enable control inputs that can adjust the quiescent current standby state up and down with a power as low as 25μA.

apply

• Industrial control
• Telecommunications and data communication systems
• Embedded systems
• Automotive telematics and body electronics
• Conversion of standard 24V, 12V, and 5V input voltage rails