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I am your friendly
onsemi website assistant and I was built to help you
navigate our website and show
you our useful features. I will
try my best to find what you need!
I am your friendly onsemi website assistant and I was built to help you
navigate our website and show you our useful features. I will try my best to find
what you need!
I am your friendly
onsemi website assistant and I was built to help you
navigate our website and show
you our useful features. I will
try my best to find what you need!
I am your friendly onsemi website assistant and I was built to help you
navigate our website and show you our useful features. I will try my best to find
what you need!
Enjoy your visit.
Are you looking for something to do? Join us at the VISION tradeshow!
October 4-6, 2022
onsemi will showcase its intelligent sensing solutions for industrial markets. Our experts will be available at the booth to discuss and help you support your application and design challenges.
The NCV891930 is a 2 MHz fixed−frequency low quiescent current buck controller with spread spectrum that operates up to 38 V (typical). It may be synchronized to a clock or to separate NCV891930. Peak current mode control is employed for fast transient response and tight regulation over wide input voltage and output load ranges. Feedback compensation is internal to the device, permitting design simplification. The NCV891930 is capable of converting from an automotive input voltage range of 3.5 V (4.5 V during startup) to 18 V at a constant base switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures. The switching frequency folds back to 1 MHz for input voltages between 20 V up to 38 V (typical). Under load dump conditions up to 45 V the regulator shuts down. A high voltage bias regulator with automatic switchover to an external 5 V bias supply is used for improved efficiency. Several protection features such as UVLO, current limit, short circuit protection, and thermal shutdown are provided. High switching frequency produces low output voltage ripple even when using small inductor values and an all−ceramic output filter capacitor, forming a space−efficient switching solution.
(410 kHz version offered with NCV881930)
特性
30 µA Operating Current at No Load
75 mV Current Limit Sensing
Capable of 45 V Load Dump
Board Selectable Fixed Output Voltages With Lockout
2 MHz Operating Frequency with synchronization capability
Adaptive Non−Overlap Circuitry
Integrated Spread Spectrum
Logic level Enable Input Can be Tied Directly to Battery
Short Circuit Protection Pulse Skip
Battery monitoring for UVLO and Overvoltage Protection
Thermal Shutdown (TSD)
Adjustable Soft−Start
Individual Enable and Reset pins
QFN Package with Wettable Flanks (pin edge plating)
NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
October 4-6, 2022
