BU69090NUX-TR ROHM

Datasheet DC Brushless Fan Motor Drivers 5V Single-phase Full-wave Fan Motor Driver BU69090NUX General Description Key Specifications The BU69090NUX is a 5V single-phase full-wave FAN Input Voltage Range: 1.8V to 5.5V motor driver with built in HALL element. It is part of the Operating Temperature Range: -40C to +85C DC brushless FAN motor driver series. BU69090NUX is Output Voltage (High and Low Total): built in a compact package and provides Auto Gain 0.16V(Typ) at 0.2A Control (AGC) function, silent drive by soft switching, and low battery consumption via its standby function. BU69090NUX is best used for notebook PC cooling FANs. Features Package W(Typ) x D(Typ) x H(Max) Built in HALL Element VSON008X2030 2.00mm x 3.00mm x 0.60mm AGC Function PWM Speed Control Soft Switching Drive (PWM Type) Low PWM Duty Start Assist Function Quick Start Function Stand-by Mode Lock Protection and Automatic Restart Compact Package Rotating Speed Pulse Signal (FG) Output Applications VSON008X2030 For compact 5V FAN such as notebook PC cooling FAN Typical Application Circuit VCC GND 1 8 VM FG FG 2 7 PWM 3 PWM OUT1 6 4 OUT2 PGND 5 M Figure 1. Application circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0H1H0B101950-1-2 2016 ROHM Co., Ltd. All rights reserved. 1/21 TSZ22111 14 001 06.Dec.2016 Rev.001BU69090NUX Pin Configuration Pin Description (TOP VIEW) P/No. P/Name Function 1 VCC Power supply 1 VCC GND 1 8 2 VM Power supply 2 3 PWM PWM signal input VM FG 2 7 4 OUT2 Motor output 2 PWM 3 6 OUT1 5 PGND Ground 2 6 OUT1 Motor output 1 OUT2 4 5 PGND 7 FG FG signal output 8 GND Ground 1 Figure 2. Pin Configuration Block Diagram OFFSET CANCEL VCC GND HALL ELEMENT 1 8 TSD ADC VM FG OSC UVLO 2 7 VCC CONTROL LOGIC SIGNAL FILTER OUTPUT PWM OUT1 3 6 PRE DRIVER VM OUT2 PGND 4 5 Figure 3. Block Diagram I/O Truth Table Supply magnetic direction (positive) Output operation S VOUT1 VOUT2 Marking BHYS BHYS B B B B REV FWD REV FWD N Magnetic flux density: B Magnetic flux density: B Figure 4. Output operation Supply magnetic (Note 1) PWM OUT1 OUT2 FG direction S H(OPEN) L H Hi-Z N H(OPEN) H L L S L Hi-Z Hi-Z Hi-Z N L Hi-Z Hi-Z Hi-Z H High, L Low, Hi-Z High Impedance FG output is open-drain type. (Note1) When PWM terminal is L, IC state changes to stand-by mode. FG terminal is always H in stand-by mode www.rohm.com TSZ02201-0H1H0B101950-1-2 2016 ROHM Co., Ltd. All rights reserved. 2/21 TSZ22111 15 001 06.Dec.2016 Rev.001