LV8804V_12 [SANYO]
PC and Server Fan Motor Driver; PC和服务器风扇电机驱动器
| 型号： | LV8804V_12 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | PC and Server Fan Motor Driver |
| 文件： | 总10页 (文件大小：224K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA1407A
Bi-CMOS LSI
PC and Server
LV8804V
Overview
Fan Motor Driver
The LV8804V is a motor driver for PC and server fans.
Feature
• Direct PWM three-phsae sensorless motor driver
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
max
CC
Conditions
Ratings
Unit
V
V
maximum supply voltage
V
16
CC
VG maximum supply voltage
OUT pin maximum output current
SOFTST pin withstand voltage
FR pin withstand voltage
VG max
max
21
V
I
UO, VO, and WO pins
1.2
A
OUT
V
V
V
V
V
I
max
6
V
SOFTST
max
FR
6
V
CTL pin withstand voltage
max
CTL
6
V
MINSP pin withstand voltage
FG output pin withstand voltage
FG pin maximum output current
1/2FG output pin withstand voltage
1/2FG pin maximum output current
RD output pin withstand voltage
RD pin maximum output current
Allowable Power dissipation 1
Allowable Power dissipation 2
Operating temperature
max
6
V
MINSP
max
FG
16
V
max
5
mA
V
FG
V
I
max
16
1/2FG
max
5
mA
V
1/2FG
VRD max
16
5
IRD max
Pd max1
Pd max2
Topr
mA
W
W
°C
°C
Independent IC
0.6
Mounted on designated board *
1.3
-30 to +95
-55 to +150
Storage temperature
Tstg
* : When mounted on the designated 76.1mm × 114.3mm × 1.6mm, glass epoxy board (single-layer)
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high
voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
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. 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 new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) 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.
N0211 SY 20111019-S00004/31109 MS PC 20090114-S00008 No.A1407-1/10
LV8804V
Allowable Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
V
supply voltage
V
V
V
V
V
6 to 15
0 to VREG
0 to VREG
0 to VREG
0 to VREG
CC
CC
SOFTST input voltage range
FR input voltage range
V
SOFTST
FR
V
CTL input voltage range
MINSP input voltage range
V
CTL
V
MINSP
Electrical Characteristics at Ta = 25°C, V
= 12V, unless otherwise specified
CC
Ratings
Parameter
Symbol
Conditions
Unit
mA
min
typ
3
max
4
Circuit current 1
I
1
CC
Charge pump block
Charge pump output voltage
Regulator block
V
V
17
5
V
V
VG
5V regulator voltage
4.75
5.25
VREG
Output on resistance
High-side output transistor on resistance
Low-side output transistor on resistance
Ron (H)
Ron (L)
I
I
I
= 0.7A, VG = 17V
0.6
0.6
1.2
1.0
1.0
2
Ω
Ω
Ω
O
O
O
= 0.7A, V
= 0.7A, V
= 12V
CC
CC
Sum of high-/low-side output transistor on
resistance
Ron (H+L)
= 12V, VG = 17V
Startup oscillator (OSC) pin
OSC pin charge current
I
I
C
D
-2.5
2.5
μA
μA
OSC
OSC pin discharge current
OSC
Control voltage input (CTL) pin
Motor drive on voltage input range
Motor drive off voltage input range
Minimum speed setting pin
V
V
ON
0
3
V
V
CTL
OFF
3.5
VREG
CTL
Minimum speed setting voltage input range
Minimum speed releasing voltage input range
Forward/reverse switching pin
High-level input voltage range
V
V
1
1
4
3
V
V
MINSP
2
VREG
MINSP
V
V
H
Order of current application :
UOUT→VOUT→WOUT
Order of current application :
UOUT→WOUT→VOUT
4
0
VREG
1
V
V
FR
Low-level input voltage range
L
FR
FG, 1/2FG, and RD output pins
FG output pin low-level voltage
1/2FG output pin low-level voltage
RD output pin low-level voltage
Current limiter circuit
V
V
V
When I is 2mA
O
0.25
0.25
0.25
0.35
0.35
0.35
V
V
V
FG
When I is 2mA
O
1/2FG
RD
When I is 2mA
O
Limiter voltage
V
Limit current set to 1A when RF is 0.25Ω.
0.225
0.25
0.275
V
RF
Constraint protection circuit
CT pin high-level voltage
CT pin low-level voltage
CT pin charge current
V
V
H
2.25
0.43
-2.9
0.23
7
2.8
0.5
2.95
0.65
-2.2
0.32
13
V
V
CT
L
CT
I
I
C
-2.5
0.25
10
μA
μA
CT
CT
CT pin discharge current
ICT charge/discharge ratio
Soft start circuit
D
R
CT
Soft start releasing voltage
SOFTST pin charge current
Thermal protection circuit
V
2.5
0.6
V
SOFTST
SOFTST
I
μA
Thermal protection circuit operating
temperature
TSD
Design target *
150
180
210
°C
* : Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since
it operates outside the IC's guaranteed operating range, the customer's thermal design should be performed so that the thermal protection circuit will not be
activated when the fan is running under normal operating conditions.
No.A1407-2/10
LV8804V
Package Dimensions
unit : mm (typ)
3361
SIDE VIEW
TOP VIEW
15.0
BOTTOM VIEW
36
(4.0)
1
2
0.3
0.2
0.8
(0.7)
SIDE VIEW
SANYO : SSOP36J(275mil)
Pd max – Ta
Pin Assignment
1.5
1.0
0.5
Thermal resistance
evaluation board
Thermal resistance
evaluation board :
1.30
76.1 × 114.3 × 1.6mm3
glass epoxy
COMIN
FIL
1
2
3
4
5
6
7
8
9
36 COM
35 V
34 V
33 V
32 V
CC
CC
CC
CC
Independent IC
0.60
VREG
VREG
NC
0.57
0.26
100
NC
31 NC
0
–
–
30 20
0
20
40
60
80
120
Ambient temperature, Ta – °C
F/R
30 UO
29 VO
CTL
MINSP
28 WO
27 RF
LV8804V
SOFTST 10
FG 11
26 RF
1/2FG 12
NC 13
25 NC
24 RF
RD 14
23 SUB_GND
22 CPC
21 CP
NC 15
CT 16
OSC 17
GND 18
20 VG
19 GND
Top view
No.A1407-3/10
LV8804V
Block Diagram
1/2FG
FG
RD
RD
CT
VG CPO
CP
CHARGE
PUMP
FG
CTOSC
VREF
CTL
VREG
F/R
CTLAMP
REFOSC
CTL
VREG
VREG
MINSP
SENSORLESS
LOGIC
OSC
START
OSC
PRI DRIVE
FIL
V
CC
COMIN
COM
UO
VO
WO
SELECTOR
CURR LIM
COM
RF
GND SOFTST
SUB_GND
No.A1407-4/10
LV8804V
Pin Function
Pin No.
Pin name
Function
Equivalent circuit
36
1
COM
Motor middle point connection.
VG
COMIN
FIL
Motor position detection comparator filter
pin. A capacitor must be connected between
this pin and the FIL pin (pin 2).
36
2
Motor position detection comparator filter
pin. A capacitor must be connected between
this pin and the COMIN pin (pin 5).
1
2
3
4
VREG
Regulator voltage (5V) output.
A capacitor must be connected between
these pins and ground.
V
CC
3
4
VREF
5, 6,
13, 15,
25, 31
7
NC
No connection. These pins are not
connected with the internal parts.
F/R
Motor rotation direction switching. A
VREG
7
high-level input causes current to flow into
the motor in the order of U, V, and W and a
low-level input in the order of U, W, and V.
Changing the order of current application
turns the motor in the opposite direction.
Reverse signal
15kΩ
Forward/reverse
switching signal
100kΩ
Forward signal
8
CTL
Motor control voltage input.
VREG
When the control voltage is higher than 3 V
(3V < CTL voltage), the motor stops.
The motor speed is controlled by varying the
control voltage within the range of 3V to 1V
(3V > CTL voltage > 1 V). When the control
voltage becomes lower that 1V (1 V > CTL
voltage), the current limit set by the RF
resistor is reached.
9
MINSP
Minimum speed setting voltage input.
The minimum speed of the motor can be set
by resistor-dividing the regulator voltage and
feeding the resultant voltage that is within the
range of 1V to 3V (1 V < MINSP < 3V).
500Ω
500Ω
9
8
10
SOFTST
Soft start time setting.
VREG
The motor can be started smoothly by
connecting a capacitor between this pin and
ground.
500Ω
10
Continued on next page.
No.A1407-5/10
LV8804V
Continued from preceding page.
Pin No.
11
Pin name
FG
Function
Equivalent circuit
11 12 14
FG pulse output. This pin outputs a Hall
sensor system equivalent pulse signal.
12
14
1/2FG
RD
FG pulse output. This pin outputs 1/2 Hall
sensor system equivalent pulse signal.
Motor lockup detection output.
Output is fixed high when motor is locked up.
16
CT
Motor lockup detection time setting.
When the motor lockup condition is detected,
the protection time period before the
protection circuit is activated is set by
connecting a cacacitor between this pin and
ground.
VREG
500Ω
16
17
OSC
Motor startup frequency setting. A capacitor
must be connected between this pin and
ground. The startup frequency is adjusted by
controlling the charge/discharge current and
capacitance of the capacitor.
VREG
500Ω
500Ω
17
18, 19
20
GND
VG
GND pin.
Charge pump step-up voltage output.
21
22
A capacitor must be connected between this
V
CC
pin and the V
pin or ground.
CC
VREG
21
22
CP
Charge pump step-up pulse output pin.
A capacitor must be connected between this
pin and the CPC pin (pin 22).
20
CPC
Charge pump step-up pin.
A capacitor must be connected between this
pin and the CP pin (pin 21).
23
SUB_GND
GND pin.
32, 33,
34, 35
V
Power supply for the IC and motor.
Capacitors must be connected between
these pins and ground.
CC
32 33
34 35
30
29
UO
VO
WO
RF
Output pins. Connect these pins to the U, V,
and W of the motor coil.
28
29
30
28
24, 26,
27
Output current detection pins. The drive
current is detected by connecting a resistor
between these pins and ground.
24
26 27
No.A1407-6/10
LV8804V
LV8804V Functional Description
1 Control Characteristics
IRF
When RF = 0.25Ω
The gradient and limit current are determined by the resistance of the RF pin.
1A
Minimum speed
This minimum speed is determined by the MINSP pin voltage.
0.5A
VCTL
0V
1V
2V
3V
4V
The current flowing to the motor and the control characteristics are determined by adjusting the resistance of the RF
resistor.
By connecting a resistor with a resistance of 0.25Ω between the RF pin and GND, the limit current is set at a motor current
of 1A, and the control characteristics shown in the diagram above are achieved.
By increasing the RF resistance, the limit current is reduced; conversely, by reducing the RF resistance, the limit current is
increased.
Since I max. is 1.2A, the RF resistance must be set in such a way that the current flowing to the motor does not exceed
O
this maximum value.
By varying the CTL voltage between 1V and 3V, the current flowing to the output is limited.
PWM control is exercised within the voltage range above (1V to 3V) to control the motor speed.
When the CTL voltage is less than 1V, the current limiter value determined by the RF resistance is reached, and the motor
speed is limited.
When the CTL voltage is greater than 3V, PWM is reduced to 0%, and the motor stops. (However, the motor does not stop
if the minimum speed has been set.)
The minimum speed can be set by resistor-dividing the REG voltage (5V) to create a voltage of 1V to 3V, and inputting
this voltage to the MINSP pin.
If the minimum speed is not going to be set, the MINSP pin and CTL pin (pin 8) must be short-circuited.
2. Timing at Startup (soft start)
V
pin
CC
CTL pin
Stop
Full speed
The gradient changes in accordance with the capacitance of the SOFTST pin.
(The higher the capacitance, the steeper the gradient.)
Soft start
SOFTS pin
Stop
Full speed
No.A1407-7/10
LV8804V
Application Circuit Example
*3
V
CC
UO
VO
VG
CP
WO
COM
CPC
COMIN
FIL
VREG
*11
MINSP
CTL
*9
*13
*13
FG
1/2FG
RD
FG
*12
1/2FG
*13
FR
CT
RD
PWM
RF
SOFTST
OSC GND SUB
GND
*8
1000pF
*1
*1. Power supply and GND wiring
The GND is connected to the control circuit power supply system.
*2. Power-side power stabilization capacitor
For the power-side power stabilization capacitor, use a capacitor of 10μF or more.
Connect the capacitor between V and GND with a thick and along the shortest possible route.
CC
pins (pins 32, 33, 34, and 35) must be short-circuited on the print pattern.
The V
CC
The GND pins (pins 18 and 19) and the SUB_GND pin (pin 23) must be short-circuited on the print pattern.
LV8804V uses synchronous rectification for high efficiency drive. Synchronous rectification is effective for heat
reduction and higher efficiency. However, it may increase supply voltage.
If the supply voltage shall increase, make sure that it does not exceed the maximum ratings by inserting a zener diode
between power supply and GND.
*3. Reverse connection protection diode
This diode protects reverse connection.
Insert a diode between power supply and V
Connection of this diode is not necessary required.
pin to protect the IC from destruction due to reverse connection.
CC
*4. COMIN and FIL pins
These pins are used to connect the filter capacitor. The LV8804 uses the back EMF signal generated when the motor is
running to detect the information on the rotor position. The IC dertermines the timing at which the output block
applies current to the motor based on the position information obtained here. Insert a filter capacitor with a capacitance
ranging from 1,000pF to 10,000pF (reference value) between the COMIN pin and FIL pin to prevent any motor startup
missoperation that is caused by noise. However, care must be taken since an excessively high capacitance will give
rise to deterioration in efficiency and delays in the output power-on timing while the motor is running at high speed.
Furthermore, connect the capacitor between the COMIN pin and FIL pin as close as possible in order to avoid the
effects of noise from other sources.
No.A1407-8/10
LV8804V
*5. CT pin
This pin is used to connect the lock detection capacitor.
The constant-current charging and constant-current discharging circuits inporporated causes locking when the pin
voltage reaches 2.5V, and releasing the lock protection when it drops to 0.5V. This pin must be connected to the GND
when it is not going to be used.
*6. RF pins
These pins are used to set the current limit.
When the pin voltage exceeds 0.25V, the current is limited, and regeneration mode is established. In the application
circuit, this voltage is set in such a way that the current limit will be established at 1A.
The calculation formula is given below.
RF resistance = 0.25V/target current limit value
All the RF pins (pins 24, 26 and 27) must be short-circuited on the print pattern.
*7. SOFTST pin
This pin is used to set the soft start.
By connecting a capacitor between this pin and GND, the motor speed can be increased gradually.
When the pin voltage exceeds 2.5V, the soft start is released, and the LV8804V is switched to normal control.
If the soft start function is not going to be used, connect the pin to the VREG pin.
*8. OSC pin
This pin is used to connect the capacitor for setting the startup frequency.
A capacitor with a capacitance ranging from about 500pF to 2,200pF (reference value) must be connected between
this pin and GND.
The OSC pin determines the motor startup frequency, so be sure to connect a capacitor to it.
<How to select the capacitance>
Select a capacitance value that will result in the shortest possible startup time for achieving the target speed and
produce minimal variations in the startup time. If the capacitance is too high, variations in the startup time will
increase; conversely, if it is too low, the motor may idle. The optimum OSC constant depends on the motor
characteristics and startup current, so be sure to recheck them when the type of motor used or circuit specifications are
changed.
*9. MINSP pin
This pin is used to input the voltage to set the minimum speed.
The minimum speed can be set by resistor-dividing the VREG voltage (5V) to create a voltage of 1 to 3V, and
inputting this voltage to the MINSP pin.
If the minimum speed is not going to be set, the MINSP pin and CTL pin (pin 8) must be short-circuited.
*10. VG, CP, and CPC pins
These pins are used to connect the capacitors to generate the pre-drive voltage and stabilize the pre-drive power
supply.
Be sure to connect these capacitors in order to generate the drive voltage for the high-side (upper) output DMOS
transistor.
*11. VREG pins
These are the control system power supply pin and regulator output pin, which create the power supply of the control
unit. Be sure to connect a capacitor between this pin and GND in order to stabilize control system operation.
Since these pins are used to supply current for control and generate the charge pump voltage, connect a capacitor with
a capacitance that is higher than that of the capacitor connected to the charge pump.
Both the VREG pins (pins 3 and 4) must be short-circuited on the print pattern.
*12. CTL
Change by the Slew Rate of 0.5V/ms or more and use the voltage of the CTL pin.
The current might return to the power supply when using it below the above-mentioned Slew Rate and IC be
destroyed.
*13. Pin protection resistor
It is recommended that resistors higher than 1kΩ are connected serially to protect pins against misconnection such as
GND open and reverse connection.
No.A1407-9/10
LV8804V
SANYO Semiconductor Co.,Ltd. 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 Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality 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 accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents 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 Co.,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 information storage or retrieval system, or otherwise,
without the prior written consent 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 Co.,Ltd. product that you intend to use.
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 for 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.
This catalog provides information as of November, 2011. Specifications and information herein are subject
to change without notice.
PS No.A1407-10/10
相关型号：
LV8805V-MPB-H
Direct PWM Structure Three-Phase Sensorless Fan Motor Driver, SSOP36J (275mil) Exposed Pad, 30-FNFLD
ONSEMI
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