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Ordering number : ENA0706
Monolithic Linear IC
LA6581CL
Overview
Fan Motor Driver
BTL Driver Single-Phase Full-Wave
The LA6581CL 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, RD) 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 with BTL output (gain resistance 500-284k, 55dB) : Suitable for the equipment requiring silent operation, such as game equipment, CPU cooler, etc. because of its freedom from switching noise. * Low-voltage operation possible, with wide operable voltage range (3 to 16V) * Low saturation output (Upper + lower saturation voltage : VOsat (total) = 0.3V typ, IO = 100mA) : High coil efficiency with low current drain. IC itself does not generate much heat. * High impedance of Hall input pin * FG output (rotation speed detection output : open collector output) * Heat protection circuit : When the large current flows because of output short-circuit, raising the IC chip temperature above 180C, the heat protection circuit suppresses the drive current, preventing IC burn and breakdown. * Ultraminiature package (ECSP2828-10 : 2.8x2.8x0.8mm3 typ) : Small substrate while allowing larger blades.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
30707 MS PC 20070129-S00001 No.A0706-1/4
LA6581CL
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Output voltage Allowable dissipation Output current Symbol VCC max Pd max IOUT max IOUT max Output withstand voltage FG output withstand FG output current Operating temperature Storage temperature VOUT max VFG max IFG max Topr Tstg Mounted on a specified board*1 *2 T < 200ms Conditions Ratings 18 450 0.36 0.50 18 18 5 -30 to +100 -55 to +150 Unit V mW A A V V mA C C
*1 ; Mounted on a board (20.0x10.1x0.8mm3 : Paper Phenol) *2 ; This specifies the starting current. Tj = 150C max must not be exceeded.
Recommended Operating Ratings at Ta = 25C
Parameter Supply voltage Common-phase input voltage range of Hall input Symbol VCC VICM Conditions Ratings 2.2 to 16 0.3 to VCC-1.5 Unit V V
Electrical Characteristics at Ta = 25C, VCC = 12.0V, unless especially specified.
Parameter Circuit current OUT output low voltage OUT output high voltage Hall bias voltage Hall amplifier gain Hall amplifier input current Input offset voltage FG output low voltage FG output leakage current Thermal protection circuit Symbol ICC VOL VOH VHB Vg VINR VOFST VFG IFGL Th IFG = 3mA VFG = 7V * Design guarantee 150 180 Conditions min IN- = 5.8V, IN+ = 6.0V, RL = IO = 100mA IO = 100mA IHB = 5mA 1.85 52 -10 Ratings typ 14 0.1 0.1 1.95 55 -2 3 0.2 max 19 0.2 0.2 2.05 58 10 6 0.3 30 200 mA V V V dB A mV V A C Unit
* Design guarantee : Design target. Measurement with a single unit not made.
Truth Table
INH L IN+ L H OUT1 H L off OUT2 L H off FG L off During rotation During overheat protection Mode
No.A0706-2/5
LA6581CL
Package Dimensions
unit : mm (typ) 3301
500
Pd max -- Ta
Specified board : 20x10x0.8mm3 Paper phenol
Top View 2.8 1 2 10
Bottom View 0.325 1
Allowable power dissipation, Pd max -- mW
450 400
0.3
(0.2)
2.8
0.05
0.6
300
200 180
6 0.075
5
100
(0.8)
0.8
0.015
SANYO : ECSP2828-10X02
0 -30
0
30
60
90 100
120
Ambient temperature, Ta -- C
Pin Assignment
IN+ HB INOUT1 NC 1 2 3 4 5 Top view 10 FG 9 NC 8 VCC 7 OUT2 6 GND
Block Diagram
VCC FG 2.0VRG HB H ININ+
OUT1
OUT2
GND
PCA01064
No.A0706-3/5
LA6581CL
Timing Chart
Hall Signal
OUTPUT
Coil Current
FG Pulse
No.A0706-4/5
LA6581CL
Sample Application Circuit
Di *1
Cr VCC
*4
R2 HB *2 H ININ+ *5 R2 GND
FG *3 OUT1 H
HB IN-
OUT2 R1
IN+
Elements in substrate
*1 : When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to secure the regenerative current route. Similarly, Cr is necessary to enhance the reliability when there is no capacitor near the fan power line. *2 : To obtain Hall bias from VCC, carry out 1/2 x VCC 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 : When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0V. Therefore, the Hall element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output amplitude is made with R1. (When VCC = 12V, the step *2 above proves advantageous for IC heat generation.) *4 : Keep this open when not used. *5 : When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring.
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This catalog provides information as of March, 2007. Specifications and information herein are subject to change without notice. PS No.A0706-5/5

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