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Ordering number : ENN6189
LB1965M
Monolithic Digital IC
LB1965M
Two-Phase Unipolar Driver for Variable-Speed Fan Motor
Features
* With only a few peripheral parts including a thermistor, ambient temperature dependent continuous speed control can be implemented. This allows low-speed startup (100% duty drive at startup). * Settable minimum rotation speed for low temperature * Built-in thermistor voltage amplification circuit assures high precision of ambient temperature to rotation speed ratio * Built-in motor lockup protection and automatic recovery circuit Output current Io = 1.5A, built-in output stage protection Zener diode -> Low-noise protection with chip capacitors also possible * Built-in thermal protection * FG output * Direct Hall element connection possible
Package Dimensions
unit: mm 3111-MFP14S
0.625 1.8max
0.15
[LB1965M]
14 8
1 8.0
7
0.35
1.0 1.0
SANYO : MFP14S
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum input current Maximum applied output voltage Maximum output current Current flowing into FG FG applied voltage Allowable power dissipation Operating temperature Storage temperature Symbol Conditions ICC max t 20 ms VOUT max I out max IRD max VRD max Pd max Mounted on a specified PCB (114.3 x 76.1 x 1.5 mm3 glass epoxy) Topr Tstg Ratings 200 Internal 1.5 10 50 0.8 -30 to +85 -55 to +150 Unit mA V A mA V W C C
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. 6189-1/6
0.1 1.5
5.15 6.4
4.4
LB1965M
Allowable Operating Ranges at Ta = 25C
Parameter Input current range Hall amplifier common mode input voltage range RMI input voltage range Rth input voltage range Symbol ICC VICM VRMI VICM Conditions Ratings 6.0 to 50 0 to VIN-1.5 0.3 to VIN 0 to VIN-1 Unit mA V V V
Electrical Characteristics at Ta = 25C, ICC = 10 mA
Parameter Output limiter voltage Output saturation voltage Input voltage Amplifier input offset voltage Amplifier input bias current FG output saturation voltage C charge voltage C discharge voltage Comp input threshold voltage Ct discharge voltage Rt input current VRt amplification RMI offset voltage Thermal protection operating voltage Symbol VoLM1 Vosat1 Vosat2 Vosat3 VIN VOFF IBA VFG(sat) IC1 IC2 VTH1 VTH2 VCT Irt VRt VRMIoff TSD Io = 0.1A Io = 0.5A Io = 1.0A Io = 1.5A Icc = 7.0 mA Conditions Ratings min 30 typ 32 0.95 1.15 1.4 6.7 0 max 34 1.2 1.5 2.0 7.0 7.0 0.3 5.0 0.65 0.83 0.48 0.24 3 1.60 +7 210 Unit V V V V V mV nA V A A V V V A times mA C
6.4 -7.0 -250
IFG = 5 mA C = GND C = VIN
VRT = GND RT = OPEN Design target value*
0.15 2.7 3.9 0.35 0.50 0.77 0.8VIN 0.42 0.45VIN 0.20 0.22VIN 1 1.52 1.56 -7 0 150 180
* Design target values are not measured.
Pin Assignment
Pd max - Ta
1000
Allowable power dissipation, Pd max - mW
800
Specified substrate (114.3 x 76.1 x 1.5 mm3) glass epoxy
14
13
12
11
10
9
8
OUT2 B1
6
FG
VIN
400
416
LB1965M
OUT1 IN+ IN- NC CR GND
7
200
1
0 -30 0 30 60 85 90 120
2
3
4
RMI
Rth
Ct
5
B2
(Top View)
No. 6189-2/6
600
Ambient temperature, Ta - C
LB1965M
Truth Table
IN+ H L H L - - IN- L H L H - - Ct H H H H L - Rt L L H H H - RMI H H L L H - CR L L L L L H OUT1 H L H L H H OUT2 L H L H H H FG L H L H - - Mode Full speed Full speed Minimum speed Minimum speed Low speed Lockup protection
Sample Application Circuit
12V D1 R1 390
C3 R6 2k H VIN FG B1 OUT1 IN- IN+ Ct Rth RMI CR OUT2 B2 GND C4 C1 0.47 Noise absorption capacitor 0.01 to 0.047F
R2 470k R4 18k R3 30k
R5 39k
TH 10k
C2 0.022
Unit ( resistance: , capacitance: F)
The above circuit is an example for ambient temperature based speed control using a thermistor. The thermistor voltage (Rth pin voltage) is multiplied internally by 1.6 and compared to the voltage at the Ct pin. With the above settings and at Ta = 25C, the Rth pin voltage is interrupted for the interval t off as defined by the equation below. At Ta = 45C, because the Rth pin voltage x 1.6 becomes less than Vct (=1.5V), there is no cut-off interval and the motor is driven with a duty ratio of 100%. At low temperatures, the thermistor voltage (Rth x 1.6) will rise, but minimum rotation speed is maintained to a value defined by the RMI pin voltage. Therefore minimum rotation speed at temperatures below Ta = 25C is constant. VIN-VRth x 1.6 t = -C2R2In ( VIN-VCt )
No. 6189-3/6
LB1965M
Output Timing Chart
Hall input
Discharge pulse Low temperature To Ct voltage Toff GND Output off signal Ton High temperature VRMI VRth x 1.6 VCt (=1.5V)
OUT1 current
Full-phase ON waveform Controlled waveform
OUT2 current FG output
x1.6 times circuit VIN
Timing comparator
To output 0.6r
r
GND Discharge pulse
Rth
RMI
Ct
No. 6189-4/6
LB1965M
Block Diagram
D1
L1 R1 VIN 14 B1
Thermal Protect
6 5
OUT1 R6 IN+
3
L2 AMP
2 H IN-
Control Block
8
B2
Constant Charge/ Discharge
9
OUT2
CR C1 0.47 to10 F
4
13 FG
VIN
R2 C2
Ct 12
7
GND
OUTPUT-Timing-Control x1.6
11 Rth
10
RMI R4 R5
R3 TH1
Unit ( resistance: , capacitance: F)
No. 6189-5/6
LB1965M
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. 6189-6/6

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