BA6901F – Two-phase Full-wave DC Brushless Fan Motor Drivers

Part Number: BA6901F

Function: Two-phase Full-wave DC Brushless Fan Motor Drivers

Manufacturer: Rohm


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Datasheet DC Brushless Motor Drivers for Cooling Fans Two-phase Full-wave DC Brushless Fan Motor Drivers BA6901F General description BA6901F is two-phase half-wave fan motor driver. They incorporate lock protection, automatic restart circuit and FG/AL output. Some of them have variable speed control function. Package SOP-16 W (Typ.) x D (Typ.) x H (Max.) 10.00mm x 6.20mm x 1.71mm Features „ Current Limit circuit „ PWM control (PWM pulse signal input) „ Incorporates lock protection and automatic restart circuit „ Lock alarm signal(AL) output „ Rotation speed pulse signal (FG) output SOP16 Application „ For desktop PC, server, general consumer equipment, communication equipment and industrial equipment. Absolute maximum ratings Parameter Symbol Limit Supply voltage Vcc 36 Power dissipation Pd 625- Operating temperature Topr -40 +100 Storage temperature Tstg -55 +150 Output current Iomax 70 FG signal output current Ifg 15 FG signal output voltage Vfg 36 AL signal output current Ial 15 AL signal output voltage Val 36 Junction temperature Tjmax 150 – Reduce by 5.0mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board) Unit V mW mA mA V mA V Recommended operating conditions Parameter Operating supply voltage range Hall input voltage range Symbol Vcc VH Limit 3.5 28.0 0 Vcc-2.2 Unit V V Product structure Silicon monolithic integrated circuit w. © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111 14 001 This product is not designed protection against radioactive rays 1/17 TSZ02201-0H1H0B100500-1-2 18.DEC.2012 Rev.002 BA6901F Datasheet Pin configuration CR FG AL ALB PWM LD CNF GND 1 2 3 4 5 6 7 8 (TOP VIEW) 16 TOUT 15 Vcc 14 A2 13 A1 12 CL 11 CS 10 H– 9 H+ Fig. 1 Pin configuration Block diagram Pin description P/No. T/Name 1 CR 2 FG 3 AL 4 ALB 5 PWM 6 LD 7 CNF 8 GND 9 H+ 10 H11 CS 12 CL 13 A1 14 A2 15 Vcc 16 TOUT Function Charging and discharging pulse circuit capacitor and resistor connecting terminal Rotating speed pulse signal output terminal Lock alarm signal output terminal Lock alarm signal terminal (inversion signal of AL) PWM input terminal (H or OPEN:Output ON, L:Output OFF) Lock detection and automatic restart capacitor connecting terminal Phase compensating capacitor connecting terminal GND terminal Hall input terminal + Hall input terminal – Current detecting input terminal Current limiting input terminal Output terminal 1 Output terminal 2 Power terminal Charging and discharging pulse output terminal CR 1 FG 2 AL 3 ALB 4 PWM 5 LD 6 CNF 7 GND 8 LOCK DETECTION & AUTOMATIC RESTART PWM + – + – LOGIC + – REG A2 A1 – + – + TOUT 16 Vcc 15 A2 14 A1 13 CL 12 CS 11 H- 10 H+ 9 Fig.2 Block diagram © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001 2/17 TSZ02201-0H1H0B100500-1-2 18.DEC.2012 Rev.002 BA6901F I/O truth table Hall input H+ H- PWM H L H, OPEN L H H, OPEN HL L LH L H L H, OPEN H; High, L; Low, Hi-Z; High impedance FG ou […]

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BA6901F Datasheet

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