PT3953 PROLIFIC | Alldatasheet
Document overview
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Technical content
Single Coil Fan Driver with ()Proli Ic \\ TECHNOLOGY FOR TOMORROW Key Features TO a H 1.8V~8.5V supply voltage | _ aneananey Single phase full wave ‘| I Soft switching output Ly i Ll @ Built-in Hall sensor o ® Motor locked protection =F) ar & automatic restart @® Speed controllable by PWM input signal @ ESD protection: 8KV 1.FG Te eT TTT @ FG output 3.01/First output pin oe ee oe Pportp 4.02/Second output pin application eVDOIoe powsreupohe eS @ Built-in hysteresis comparator The PT3953 is designed for magnetic actuating using a bipolar [| (etuilietin aon liens magnetic field. The built-in dynamic offset cancellation of pre-amplifier Ml High sensitivity & low stage achieves optimal symmetrical magnetic sensing. The output thermal drift magnetic driver provides a linear drive to eliminate switching noise. sensing This Hall-effect IC is optimal for notebook cooling fan application with Mi Low power consumption speed controllable by PWM input signal. The supply voltage range is & high driving efficiency from 1.8V to 8.5V and the output current is 400mA..
Applications
Absolute Maximum Ratings (Ta=25°C) ll Single coil 5V brushless DC fan with PWM function [escneneerraneemen [ome | fom | oe | device. a Paecewensne fe | feof on Cd a ee *1; Reduced by 4.5mW for each increase in Ta of 1°C over 25°C When mounted on 50mm x 50mm x 1.6mm glass epoxy board *2: Should not exceed Pd Prolific Technology Inc. http://www. prolific.com.tw