G760A

Global Mixed-mode Technology Inc. Fan Speed PWM Controller G760A Features „Constant Fan Speed Control „PWM control for stable operation „Build-in MOSFET switch „SMBus interface „Internal short-circuit protection „On/Off control provided Applications „Notebook PC „Industrial PC „LAN Switch „Servers „Telecom equipment „Industrial Control General Description G760 is a single chip solution for fan speed control, packaged in a space saving SO-8 package. It connects directly to the fan and performs closed-loop control of the fan speed. The only external component required is a 10µF capacitor. It determined the current fan speed based on the fan rotation pulses and an externally supplied clock. It uses pulse width modulation (PWM) method and an on-chip MOSFET to control the fan speed to ±2% of the programmed speed. The desired fan speed is programmed via the SMBus. The actual fan speed and fan status can be read via the SMBus. Short-circuit protection is implement...