Коммутационные контроллеры NCP5230MNTWG

DC/DC контроллер , синхронный понижающий, 4.5В до 13.2В, 1 выход, 1МГц, QFN-16

The NCP5230MNTWG is a precise low voltage synchronous buck controller with power saving mode in 16 pin QFN package. It is a simple single phase solution with differential phase current sensing, power saving operation and gate drivers to provide accurately regulated power. The adaptive non overlap gate drive and power saving operation circuit provide a low switching loss and high efficiency solution for server, notebook and desktop systems. A high performance operational error amplifier is provided to simplify compensation of system. The NCP5230 also features soft start sequence, accurate overvoltage and overcurrent protection, UVLO for VCC and VCCP, thermal shutdown, chip enable through OSC pin, latched overvoltage protection (OVP), internally fixed OCP threshold and start-up into pre-charged loads. Automatic power saving mode to maximize efficiency during light load operation. It has VCC voltage range from 4.5V to 13.2V and operating current of 5mA (VCC = 5V, EN = high).

• High performance operational error amplifier
• Internal soft start/stop and remote ground sensing sync function
• ±0.5% internal voltage accuracy and 0.8V voltage reference
• OCP accuracy, four re-entry times before latch
• Internal high precision current sensing amplifier and thermally compensated current monitoring
• Lossless differential inductor current sensing
• Oscillator frequency range of 100KHz to 1000KHz and Vout from 0.8V to 3.3V (5V with 12V VCC)
• 20ns adaptive FET non-overlap time of internal gate driver
• Operating ambient temperature range from 0°C to 85°C
• Maximum duty cycle of 95%

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