PT3921 PROLIFIC | Alldatasheet
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Single Coil Fan Driver ()Proli Ic \\ TECHNOLOGY FOR TOMORROW Key Features X 2pm Soto 2-0 Ml 2.7V~17V supply voltage yorasnm | [To hoot § Single phase full wave | ex, “ : @ Soft switching output > Part Number: 3921 @ Built-in Hall sensor Date Codex Years @ Motor locked protection eo ee ow & automatic restart st @ ESD protection: 8KV Built-in hysteresis comparator oo Built-in Zener diode 41. VDD/DC I} j itiv]: 2:Ot/First outputpin | |<] || a U figheensiay Qs 3.02/Second output pin thermal drift magnetic 4.GND/DC ground sensing ; ; ; . ; ; @ Low power consumption The PT3921 is designed for magnetic actuating using a bipolar & high driving efficiency magnetic field. The built-in dynamic offset cancellation of pre-amplifier . stage achieves optimal symmetrical magnetic sensing. The output application driver provides a linear drive to eliminate switching noise. This Hall-effect IC is optimal for DC brushless fan application. The supply voltage range is from 2.7V to 17V and the output current is 400mA. Ap pl i cat i ons ll Single coil12V brushless Specifications DC fan Absolute Maximum Ratings (Ta=25°C) Cooling fan for household electronics consoles. ee | Max.outputcurrent | tomax [| ossec | soo? ma | ee CT a *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