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Ordering number : ENN*6202
LB1868
Monolithic Digital IC
LB1868
Two-Phase Brushless Fan Motor Driver
Preliminary Overview
The LB1868 is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and automatic recovery can be implemented. The IC can be configured for 12V or 24V operation and a wide range of variations, from LOW speed to H-High speed and from 60 cm to 120 cm square using the same PCB. This makes it easy to design highly reliable fan motor installations.
Package Dimensions
unit: mm 3098B-DIP10S
[LB1868]
10 6
7.62 6.4
1 9.4
5
* 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 * Built-in thermal shutdown
0.51min
0.48 0.95 1.14 1.78
3.2
3.0 3.9max
Functions and Features
SANYO : DIP10S
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
83100RM(KI) No. 6202-1/4
0.25
LB1868 Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum input current Maximum applied output voltage Maximum output current Current flowing into RD pin RD applied voltage Allowable power dissipation Operating temperature Storage temperature Symbol ICC max t 20 ms VOUT max IOUT max IRD max VRD max Pd max Topr Tstg Conditions Ratings 200 Internal 1.0 10 30 1.1 -30 to +80 -55 to +150 Unit mA V A mA V W C C
Allowable Operating Ranges at Ta = 25C
Parameter Input voltage range Common mode input voltage range Symbol ICC VICM Conditions Ratings 6.0 to 50 0.2 to VIN-1.5 Unit mA V
Electrical Characteristics at Ta = 25C, Icc = 10 mA
Parameter Output limiter withstand voltage Output saturation voltage VIN voltage Hall input sensitivity (at zero peak) RD output saturation voltage CT drain current CT discharge current Comp input threshold voltage Thermal protection operating temperature Thermal protection circuit hysteresis Symbol VOLM1 VOLM2 Vosat 1 2 VIN VHN VRDsat IC1 IC2 VTH1 VTH2 TSD TSD Conditions Z1, Z2 open Z1, Z2 short Io = 0.5A Io = 1.0A ICC = 7.0 mA Including offset and hysteresis IRD = 5 mA C = GND C = VIN Ratings min 54 31 typ 57 33 0.95 0.15 6.7 max 60 35 1.2 1.5 7.0 20 0.3 4.9 0.41 0.83 0.48 Unit V V V V V mV V A A V V C C
6.4
Design target value* Design target value*
0.1 2.7 3.8 0.19 0.30 0.77 0.8VIN 0.42 0.45VIN 180 40
* Design target values are not measured.
Pd max - Ta
1. 1
Allowable power dissipation, Pd max - W
1. 0 0. 9 0. 8 0. 7 0. 6 0. 5 0. 4 0. 3 0. 2 0. 1 0 -30 -20 0 20 40 60 80 100
Ambient temperature, Ta - C
No. 6202-2/4
LB1868
Block Diagram and Sample Application Circuit
VIN VCC Thermal shutdown R 1 R2
L1
L2
OUT
IN+ Control block H IN- Z1 Constant current source OUT2
Z2
CT C1 0.47 to 10 F GND RD
Truth Table
IN+ H L H L IN- L H L H C L L H H OUT1 H L H H OUT2 L H H H RD L L H H *RD is a latch type output.
No. 6202-3/4
LB1868
Pin Description
Pin name IN- IN+ CT Z1 Z2 OUT1 OUT2 VIN GND RD Function Hall input + pin Hysteresis amplifier Hall input - pin Hysteresis amplifier Lockup protection time setting capacitor pin (0.47 to 4.7 F) External Zener diode pin (external Zener diode to be connected between power supply and Z1) Kickback absorption voltage alteration pin (shorted to Z1: 12V operation) Output 1 pin Output 2 pin Regulated power supply input pin (limiting resistor to be inserted between power supply and VIN) GND pin Lockup detection pin (latch type)
Pin Assignment
IN- IN+ CT OUT1 GND
1 2 3 4 5
10 VIN 9
RD Z2 Z1 OUT2
LB1868
8 7 6
Top view
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of August, 2000. Specifications and information herein are subject to change without notice. PS No. 6202-4/4

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