LB1868M_09 SANYO | Alldatasheet

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Technical content

Features

  • Output protection Zener diode with variable withstand voltage Z1, Z2 pins open: VOLM = 57V (24V specification) Z1, Z2 pins shorted: VOLM = 32V (12V specification) External Zener diode connected across Z1 − VCC pins: support for fans with large drive current
  • External resistor allows configuration for 12V or 24V
  • Direct Hall element connection possible (built-in Hall amplifier with hysteresis supports core without auxiliary electrode)
  • Built-in output transistor with 1.0A output current (strengthened negative-current support for core without auxiliary electrode)
  • Built-in rotation detection function: Low during rotation and High during stop
  • Built-in lockup protection with automatic recovery
  • ST pin for motor stop/drive (for standby mode of copiers etc.) • FG output pin for rotation detection
  • BC pin for kickback noise reduction (with 2 external capacitors) • Built-in thermal shutdown Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum input current I CC max t ≤ 20ms 200 mA Maximum applied output voltage V OUT max Internal V Maximum output current I OUT max 1.0 A Current flowing into RD, FG I RD max 10 mA RD, FG applied voltage V RD max 30 V ST applied voltage V ST max 7.5 V Allowable power dissipation Pd max Mounted on a specified board * 800 mW Operating temperature Topr -30 to +80 °C Storage temperature Tstg -55 to +150 °C * Specified board: 20mm × 15mm × 1.5mm, glass epoxy board. Monolithic Digital IC 2-phase Brushless Fan Motor Driver

No.6203-2/5 Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit Input current range I CC 6.0 to 50 mA Common mode input voltage range V ICM 0.2 to V IN-1.5 V ST High voltage V STH 4.5 to 7.0 V ST Low voltage V STL 0 to 0.5 V Electrical Characteristics at Ta = 25°C, ICC = 10mA Ratings Parameter Symbol Conditions min typ max Unit VOLM1 Z1, Z2 open 54 57 60 V Output limiter withstand voltage VOLM2 Z1, Z2 short 31 33 35 V VOsat1 I O = 0.5A 0.95 1.2 V Output saturation voltage VOsat2 I O = 1.0A 1.15 1.5 V VIN voltage V IN I CC = 7.0mA 6.4 6.7 7.0 V Hall input sensitivity (at zero peak) V HN Including offset and hysteresis 20 mV RD, FG output saturation voltage V RDsat I RD = 5mA 0.1 0.3 V CT drain current IC1 C = GND 2.7 3.8 4.9 µA CT discharge current IC2 C = V IN 0.19 0.30 0.41 µA VTH1 0.77 0.8V IN 0.83 V Comp input threshold voltage VTH2 0.42 0.45V IN 0.48 V ST input current I ST V ST = 5V 80 120 µA Thermal protection operating temperature TSD Design target value * 180 °C Thermal protection circuit hysteresis ∆TSD Design target value * 40 °C * Design target value, Do not measurement. Package Dimensions unit : mm (typ) 3111A SANYO : MFP14S(225mil) 8.0 0.15 (1.0) 1.0 0.35 1.7MAX (1.5)0.1 4.4 0.63 6.4 -30 0 20 40 60 80 1000 1.0 0.8 0.6 0.4 0.2 Pd max -- Ta -20 Ambient temperature, Ta -- °C Allowable power dissipation, Pd max -- W Specified board: 20×15×1.5mm3 glass epoxy board.

No.6203-3/5 Pin Assignment 1IN− 2IN+ 3CT 4ST OUT1 6 7GND VIN RD OUT2 8 NC Top view LB1868M BC FG Pin Function Pin No. Pin name Function 1 IN − Hall input + pin. Hysteresis amplifier 2 IN + Hall input − pin. Hysteresis amplifier 3 CT Lockup protection time sett ing capacitor pin (0.47 to 4.7µF). 4 ST Start/stop pin. 5 BC Output transistor common base pin. 6 OUT1 Output 1 pin. 9 OUT2 Output 2 pin. 7 GND GND pin. 10 Z1 External Zener diode pin (external Zener diode to be connected between power supply and Z1). 11 Z2 Kickback absorption voltage alteration pin (shorted to Z1: 12V operation). 12 FG Rotation frequency detector pin. 13 RD Lockup detection pin (latch type). 14 V IN Regulated power supply input pin (limiting re sistor to be inserted between power supply and VIN). Truth Table ST IN + IN − CT OUT1 OUT2 RD FG H L L H H L L H L H L H H L H H L L H L L L L H L L H L H H L H H H H L L or OPEN L H H H H H H * RD is a latch type output

No.6203-4/5 Block Diagram IN− IN+ CT OUT1 GND VIN FG OUT2 L1 L2 H VCC R1 0.47 to 10µF BC ST RD Control block Thermal shutdown Constant current source Application Circuit Example (1) 12V supply voltage IN− IN+ CT ST OUT1 BC GND 14 13 12 11 10 9 VIN RD Z2 Z1 OUT2 NC LB1868M H 330Ω 2kΩ VCC 12V 0.47µF FG

PS No.6203-5/5 SANYO Semiconductor Co.,Ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. When designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. Such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. Information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equi pment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. In the event that any or all SANYO Semiconductor C o.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. (2) 24V supply voltage IN− IN+ CT ST OUT1 BC GND 14 13 12 11 10 9 VIN RD Z2 Z1 OUT2 NC LB1868M H 1.2kΩ 2kΩ VCC 24V 0.47µF FG (3) High-Power Fan (120mm-HH-Speed) IN− IN+ CT ST OUT1 BC GND 14 13 12 11 10 9 VIN RD Z2 Z1 OUT2 NC LB1868M H 2kΩ VCC 12V (24V) 0.47µF FG 330Ω (1.2kΩ) VZ=12V (24V) This catalog provides information as of March, 2009. Specifications and information herein are subject to change without notice.