- Wide input voltage range: 4.5V to 42V
- Internally compensated voltage mode control
- Stable and low ESR ceramic capacitors
- 100mΩ N-channel MOSFET
- Output voltage options:
- - ADJ (e.g. low 1.285V 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 start-up diode
- Integrated soft start
-
COMPLETE WEBENCH ® enable
- Buck and Inverting Buck - Boost applications
- LM22677Q is automotive grade and AEC-Q100 qualified (-40°C to +125°C operating junction temperature)
illustrate
The LM22677 series of regulators are monolithic integrated circuits that provide a step-down switching regulator capable of driving excellent line and load regulation characteristics with 5A loads (buck) all the positive features. High efficiency (> 90%) is achieved by using a low resistance N-channel MOSFET. The series consists of a fixed 5V output and adjustable version.
SIMPLE SWITCHER ® The concept provides an easy-to-use complete design using a minimum number of external components and the WEBENCH of National Semiconductor ® Design tools. WEBENCH of National Semiconductor ® Tools include features such as external component calculations, electrical simulation, thermal simulation, and simple design, build, and board of it. The switching clock frequency is made up of an internal fixed frequency oscillator, which is at 500 kHz. The switching frequency can also be adjusted with an external resistor or synchronized with an external clock up to 1MHz. It can also automatically synchronize multiple regulators sharing the same switching frequency. The LM22677 series also features built-in thermal shutdown, current limit, and enable control inputs that can adjust quiescent current standby up and down at 25μA lower power.
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- Industrial control
- Telecommunications and data communication systems
- Embedded systems
- Automotive telematics and body electronics
- Standard 24V, 12V and 5V input voltage rail conversion
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