LV11961HA Datasheet, PDF (14/14 Pages) ON Semiconductor – Single-phase FAN Motor Driver

LV11961HA
*7 < Adjustment of the minimum duty of PWM output >
As for the way of RMI input, the divided voltage of REG by resistors, as R6 and R7 shown in Fig.1, is
recommended. In addition, it would be better to use a resistor which the value is from 4.7k[ohm] to
47k[ohm], in view of impedence at RMI pin.
If not use this pin, it should be shorted to VTH pin.
*8 < Adjustment of soft starting >
The time T_SFS from IC booting to coming up to clamped duty is calculated apprpximately as below;
  _TSFS

C₄ 
V_CPH  V_SFSCL
I _SFS
The value of C4 should be selected in consideration with the start-up characteristic of motor and the time of
lock detection.
*9 < RD ouput >
RD output is Nch MOSFET with the opened drain. It is “Low level” in motor rotation and “High impedance” in
lock detection.
If not use, this pin would be better to open.
*10 < FG ouput >
FG output is Nch MOSFET with the opened drain. It is the rotational signal made by the hall signal input.
If not use, this pin would be better to open.
ORDERING INFORMATION
Device
LV11961HA-AH
Package
HSSOP14 (225mil)
(Pb-Free / Halogen Free)
Shipping (Qty / Packing)
2000 / Tape & Reel
† For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel
Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF
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