Datasheet DC Brushless Motor Drivers for Fans Multifunction Single-phase Full-wave Fan Motor Driver BD69740FV Description BD69740FV is a pre-driver that controls the motor drive part composed of the power transistors. It incorporates current limiting circuit, lock protection and automatic restart circuit, PWM soft switching circuit, soft start circuit, and quick start circuit. The pin is compatible with BD69730FV (rotation speed pulse signal output). Features Package W(Typ) x D(Typ) x H(Max) Pre-driver for external power transistors SSOP-B16 5.00mm x 6.40mm x 1.35mm Speed controllable by DC / direct PWM input PWM soft switching Soft start Quick start Current limit Lock protection and automatic restart Lock alarm signal (AL) output Applications Fan motors for general consumer equipment of desktop PC, and Server, etc. SSOP-B16 Absolute Maximum Ratings Parameter Symbol Rating Unit Supply Voltage V 20 V CC (Note 1) Power Dissipation Pd 0.87 W Operating Temperature Topr -40 to +105 C Storage Temperature Tstg -55 to +150 C Junction Temperature Tjmax 150 C High side output voltage V 36 V OH Low side output voltage V 15 V OL Low side output current I 10 mA OL Lock alarm signal (AL) output voltage V 20 V AL Lock alarm signal (AL) output current I 10 mA AL Reference voltage (REF) output current I 12 mA REF Hall bias (HB) output current I 12 mA HB Input voltage (H+, H-, TH, MIN, CS) V 7 V IN (Note 1) Reduce by 7.0mW/ over 25. (On 70.0mm70.0mm1.6mm glass epoxy board) Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0H1H0B101570-1-2 2015 ROHM Co., Ltd. All rights reserved. 1/28 TSZ2211114001 11.Aug.2015 Rev.001DatasheetDatasheet BD69740FV Recommended Operating Conditions Parameter SymbolMin Typ Max Unit Supply Voltage V 12 17 V CC 4.3 Hall Input Voltage1 V - 7 V H1 0 (more than Vcc=9V) Hall Input Voltage2 V - Vcc-2 V H2 0 (less than Vcc=9V) V 100 - 500 mV HALL Signal Level HAMP VIN 0 - V V Operating Input Voltage (TH, MIN) REF Electrical Characteristics (Unless otherwise specified Ta=25C, V =12V) CC Parameter Symbol Min Typ MaxUnit Conditions Characteristics I 3 5 8 mA Figure 1 Circuit Current CC V 5 10 15 mV Figure 2 Hall Input Hysteresis Voltage HYS I V=12V Figure 3 High Side Output Current OH 9.0 12.0 16.5 mA OH I - - 10 A V=36V Figure 4 High Side Output Leak Current OHL OH Figure 5,6 Low Side Output High Voltage V 9.3 9.5 - V I =5mA OLH OL Figure 7,8 Low Side Output Low Voltage V - 0.5 0.7 V I =5mA OLL OL Lock Detection ON Time t 0.20 0.30 0.45 s Figure 9 ON Figure 10 Lock Detection OFF Time t 4.0 6.0 9.0 s OFF Figure 11,12 AL Output Low Voltage V - - 0.3 V I =5mA ALL AL Figure 13 AL Output Leak Current I - - 10 A V =17V ALL AL Figure 14 OSC High Voltage V 2.3 2.5 2.7 V OSCH Figure 14 OSC Low Voltage V 0.8 1.0 1.2 V OSCL Figure 15 OSC Charge Current I -55 -40 -25 A COSC Figure 15 OSC Discharge Current I 25 40 55 A DOSC V =V x 0.26 TH REF - Output ON Duty 1 P 75 80 85 % OH1 H side pull up R=1k,OSC=470pF V =V x 0.35 TH REF Output ON Duty 2 P 45 50 55 % - OH2 H side pull up R=1k,OSC=470pF V =V x 0.44 TH REF - Output ON Duty 3 P 15 20 25 % OH3 H side pull up R=1k,OSC=470pF Figure 16,17 Reference Voltage V 4.8 5.0 5.2 V I =-2mA REF REF Figure 18,19 Hall Bias Voltage V 1.10 1.26 1.50 V I =-2mA HB HB Figure 20 Current Limit Setting Voltage V 120 150 180 mV CL Figure 21 SS Charge Current I -300 -120 -50 nA V =0V SS SS Figure 22 TH Input Bias Current I - - -0.2 A V =0V TH TH Figure 23 MIN Input Bias Current I - - -0.2 A V =0V MIN MIN Figure 24 CS Input Bias Current I - - -0.2 A V =0V CS CS About a current item, define the inflow current to IC as a positive notation, and the outflow current from IC as a negative notation. Truth Table Hall Input IC Output Motor Drive Output H+ H- A1H A1L A2H A2L OUT1 OUT2 Motor state AL H L Hi-Z H L L L H Rotating L L H L L Hi-Z H H L Locking Hi-Z H High, L Low, Hi-Z High impedance AL output is open-drain type. www.rohm.com TSZ02201-0H1H0B101570-1-2 2015 ROHM Co., Ltd. All rights reserved. 2/28 TSZ2211115001 11.Aug.2015 Rev.001