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Ordering number : ENA0603
Monolithic Linear IC
LA6587T
Overview
Fan Motor Driver
BTL Driver Single-Phase Full-Wave
The LA6587T is single-phase bipolar fan motor is driven, through BTL output linear drive, at high efficiency, low power, and low sound by suppressing the reactive power. Lock protection, rotary signal (FG, 1/2FG) circuits are incorporated, which is optimum for the notebook PC, consumer equipment power supply, car audio system, CPU cooler, etc. that require high reliability and low noise.
Functions
* Single-phase full-wave linear drive by BTL output (gain resistance 1k-360k, 51dB) : No switching noise, which is optimum for equipment requiring silence, such as consumer equipment power supply, car audio system, etc. * Low-voltage operation possible, with wide operating voltage range (2.2 to 14.0V) * Low saturation output (Upper + lower saturation voltage : VOsat (total) = 1.1Vtyp, IO = 100mA) : High coil efficiency with low current drain. Additionally, IC itself generates only small heat. * Built-in lock protection and automatic reset circuits * Built-in FG & 1/2FG outputs * Built-in Hall bias (VHB = 1.5V) * Thermal protection circuit : When the large current flows due to output short-circuit and the IC chip temperature exceeds 180C, this protective circuit suppresses the drive current to prevent burn and damage to IC. * Extra-small package (MSOP10)
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Output voltage Allowable power dissipation Output current Output withstand voltage RD/FG output pin output withstand voltage RD/FG output current IRD/FG max 10 mA Symbol VCC max Pd max IOUT max VOUT max VRD/FG max Mounted on a specified board* Conditions Ratings 15 400 0.6 15 15 Unit V mW A V V
Continued on next page.
Any and all SANYO Semiconductor 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 Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 Semiconductor products described or contained herein.
D0606 MS PC B8-7868 No.A0603-1/5
LA6587T
Continued from preceding page. Parameter HB output current Operating temperature Storage temperature Symbol IB max Topr Tstg Conditions Ratings 10 -40 to +85 -40 to +150 Unit mA C C
* Mounted on a specified board : 114.3x76.2x1.5mm3, glass epoxy board.
Operating Conditions at Ta = 25C
Parameter Supply voltage Common-phase input voltage range of Hall input Symbol VCC VICM Conditions Ratings 2.2 to 14.0 0 to VCC-1.5 Unit V V
Electrical Characteristics at Ta = 25C, VCC = 12V, unless especially specified.
Parameter Circuit Current Symbol ICC1 ICC2 Lock detection capacitor charge current Capacitor discharge current Capacitor charge and discharge current ratio CT charge voltage CT discharge voltage OUT output L saturation voltage OUT output H saturation voltage Hall input sensitivity FG/1/2FG output pin L voltage FG/1/2FG output pin leak current VCT1 VCT2 VOL VOH VHN VFG IFGL IO = 200mA IO = 200mA Zero peak value (including offset and hysteresis) IFG = 5mA VFG = 15V 0.15 1 0.3 30 V A 1.3 0.3 1.5 0.5 0.25 1.0 7 1.6 0.6 0.45 1.2 15 V V V V mV ICT2 RCT RCD = ICT1/ICT2 0.11 5 0.18 6.5 0.25 8 A ICT1 Conditions min During drive (CT = L) During lock protection (CT = H) 4 3 0.9 Ratings typ 6 4.5 1.2 max 8 6 1.5 mA mA A Unit
Truth Table
INH L IN+ L H H CT L OUT1 H L off OUT2 L H off FG L H During overheat protection RD * Mode During rotation
* 1/2FG provides the output equivalent to the divided FG output.
No.A0603-2/5
LA6587T
Package Dimensions
unit : mm (typ) 3236A
3.0 10 6
3.0 4.9
1 (0.5) 0.5
5 0.2
(0.85)
0.125
SANYO : MSOP10(150mil)
Pin Assignment
0.08
1.1 max
0.5
IN+
1/2FG
HB
FG
IN-
LA6587T
VCC
CT
OUT2
OUT1 Top view
GND
No.A0603-3/5
LA6587T
Block Diagram
VCC
AMP power supply 1.5VRG HB IN+ H OUT1 OUT2
IN-
GND FG
1/2FG Control circuit
Charge discharge
Discharge pulse CT = 0.47 to 1F
No.A0603-4/5
LA6587T
Sample Application Circuit
Di *1
Cr VCC 1/2FG R1 HB *2 H INFG
*4
OUT1 HB OUT2 *6 CT GND H IN*3
IN+ *5
On board element
IN+
*1 : When the breakdown protective DI at reverse connection is to be used, it is necessary to insert the capacitor Cr to secure the regenerative current route. Similarly, Cr must be provided to enhance the reliability when there is no capacitor near the fan power line. *2 : To obtain Hall bias from VCC, carry out 1VCC bias as shown in the figure. Linear driving is made through voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further. *3 : To obtain Hall bias from the HB pin, carry out constant-voltage bias at about 1.5V, which enables the Hall element to generate the stable Hall output satisfactory in temperature characteristics. *4 : Keep this open when not using. *5 : When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring. In this case, insert the capacitor as shown in the figure.
Specifications of any and all SANYO Semiconductor 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 Semiconductor 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 Semiconductor 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 Semiconductor 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 Semiconductor 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 Semiconductor 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 December, 2006. Specifications and information herein are subject to change without notice.
PS No.A0603-5/5

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