LB11693JH_10 [SANYO]

24V Fan Motor Driver IC; 24V风扇马达驱动IC
LB11693JH_10
型号: LB11693JH_10
厂家: SANYO SEMICON DEVICE    SANYO SEMICON DEVICE
描述:

24V Fan Motor Driver IC
24V风扇马达驱动IC

风扇 驱动
文件: 总12页 (文件大小:154K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Ordering number : ENA0606A  
Monolithic Digital IC  
LB11693JH  
24V Fan Motor Driver IC  
Overview  
The LB11693JH is a three-phase brushless motor driver IC that uses a direct PWM drive technique to achieve highly  
efficient drive. It is optimal for driving fuel pump motors and other miniature motors.  
Functions  
Soft phase switching + Direct PWM drive  
PWM control based on both a DC voltage input (the CTL voltage) and a pulse input  
Provides a 5V regulator output  
One Hall-effect sensor FG output  
Built-in integrating amplifier  
Automatic recovery constraint protection circuit (on/off = 1/14), RD output  
Built-in current limiter circuit  
Built-in LVSD circuit  
Built-in thermal protection circuit  
Specifications  
Absolute Maximum Ratings at Ta = 25°C  
Parameter  
Supply voltage range  
Output current  
Symbol  
max  
Conditions  
Ratings  
Unit  
V
V
30  
1.8  
CC  
I
max  
T 500ms  
A
O
Allowable power dissipation 1  
Allowable power dissipation 2  
Operating temperature  
Storage temperature  
Pd max1  
Independent IC  
0.9  
W
W
°C  
°C  
Pd max2  
Topr  
Mounted on a specified board*  
2.1  
-40 to +85  
-55 to +150  
Tstg  
* Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy  
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.  
90110 SY 20100827-S00001 / D1306 MS IM 20060404-S00004 No.A0606-1/12  
LB11693JH  
Allowable Operating Ranges at Ta = 25°C  
Parameter  
Supply voltage range  
Constant voltage output current  
RD output current  
Symbol  
Conditions  
Ratings  
Unit  
V
V
8 to 28  
0 to -30  
0 to 10  
0 to 10  
CC  
IREG  
IRD  
mA  
mA  
mA  
FG output current  
IFG  
Electrical Characteristics at Ta = 25°C, V  
= VM = 24V  
CC  
Ratings  
typ  
Parameter  
Symbol  
Conditions  
unit  
min  
max  
Current drain 1  
I
I
1
2
10  
13.5  
mA  
mA  
CC  
Current drain 2  
When STOP  
4.0  
5.5  
CC  
[Output Block]  
Output saturation voltage 1  
Output saturation voltage 2  
Output leakage current  
High side diode forward voltage 1  
High side diode forward voltage 2  
[5V Constant Voltage Output]  
Output voltage  
V
sat1  
sat2  
I
I
= 0.7A,V (SINK)+V (SOURCE)  
O O  
1.5  
2.2  
2.05  
2.9  
V
V
O
O
O
V
I
= 1.5A,V (SINK)+V (SOURCE)  
O O  
O
leak  
100  
1.65  
2.5  
μA  
V
O
V
1
I
I
= 0.7A  
= 1.5A  
1.25  
1.9  
D
D
D
D
V
2
V
VREG  
I
= -5mA  
4.7  
5.0  
30  
20  
5.3  
100  
100  
V
O
Line regulation  
ΔVREG1  
ΔVREG2  
V
= 9.5 to 28V  
mV  
mV  
CC  
= -5 to -20mA  
Load regulation  
I
O
[Hall Amplifier]  
Input bias current  
IB(HA)  
VHIN  
VICM  
VIOH  
2
10  
350  
μA  
mVp-p  
V
Hall sensor input sensitivity  
Common-mode input voltage range  
Input offset voltage  
Sine wave input  
50  
Differential input 50mVp-p  
Design target value*  
1.5  
VREG-1.0  
+20  
-20  
mV  
[CSD Pin]  
High-level output voltage  
Low-level output voltage  
External capacitor charge current  
External capacitor discharge current  
Charge/discharge current ratio  
V
(CSD)  
2.75  
0.85  
-3.3  
0.09  
3.0  
1.0  
3.25  
1.15  
-1.4  
0.23  
V
V
OH  
V
(CSD)  
OL  
ICSD1  
ICSD2  
RCSD  
-2.4  
0.17  
14  
μA  
μA  
Charge current/discharge current  
Times  
[Undervoltage Protection Circuit (LVS Pin)]  
Operating voltage  
VSDL  
3.6  
4.1  
3.8  
4.3  
0.5  
4.0  
4.5  
V
V
V
Release voltage  
VSDH  
Hysteresis  
ΔVSD  
0.35  
0.65  
[Current Limiter Circuit]  
Limiter voltage  
VRF  
V
-VM  
CC  
0.45  
150  
0.5  
0.55  
V
[Thermal Shutdown Operation]  
Thermal shutdown operating  
temperature  
TSD  
Design target value*  
(junction temperature)  
Design target value*  
(junction temperature)  
170  
40  
°C  
°C  
Hysteresis  
ΔTSD  
[CTL Amplifier]  
Input offset voltage  
VIO(CTL)  
IB(CTL)  
VICM  
-10  
-1  
0
10  
1
mV  
μA  
V
Input bias current  
Common-mode input voltage range  
High-level output voltage  
Low-level output voltage  
Open-loop gain  
VREG-1.7  
V
(CTL)  
ITOC = -0.2mA  
ITOC = 0.2mA  
f(CTL) = 1kHz  
VREG-1.2 VREG-0.8  
0.8  
V
OH  
V
(CTL)  
1.05  
V
OL  
G(CTL)  
45  
51  
dB  
*: Design target value and no measurement was made.  
Continued on next page.  
No.A0606-2/12  
LB11693JH  
Continued from preceding page.  
Ratings  
typ  
Parameter  
Symbol  
Conditions  
unit  
min  
max  
[PWM Oscillator Circuit]  
High-level output voltage  
Low-level output voltage  
Amplitude  
V
(PWM)  
2.75  
3.0  
3.25  
V
V
OH  
V
(PWM)  
1.1  
1.5  
1.3  
1.7  
1.4  
2.0  
OL  
V(PWM)  
ICHG  
Vp-p  
μA  
External capacitor charge current  
Oscillator frequency  
[TOC Pin]  
VPWM = 2.1V  
-125  
15.5  
-90  
-70  
f(PWM)  
C = 2200pF  
19.5  
27.0  
kHz  
Input voltage 1  
VTOC1  
VTOC2  
Output duty: 100%  
2.72  
1.07  
2.72  
1.07  
3.08  
1.21  
3.0  
1.3  
3.30  
1.45  
2.90  
1.27  
3.30  
1.45  
V
V
V
V
V
V
Input voltage 2  
Output duty: 0%  
Input voltage 1L  
VTOC1L  
VTOC2L  
VTOC1H  
VTOC2H  
Design target value*. 100% when VREG = 4.7V  
Design target value*. 0% when VREG = 4.7V  
Design target value*. 100% when VREG = 5.3V  
Design target value*. 0% when VREG = 5.3V  
2.80  
1.17  
3.20  
1.33  
Input voltage 2L  
Input voltage 1H  
Input voltage 2H  
[RD Pin]  
Low-level output voltage  
Output leakage current  
[FG Pin]  
V
(RD)  
IRD = 5mA  
VRD = 28V  
0.1  
0.1  
0.3  
10  
V
OL  
IL(RD)  
μA  
Low-level output voltage  
Output leakage current  
[FGFIL Pin]  
V
(FG)  
IFG = 5mA  
VFG = 28V  
0.3  
10  
V
OL  
IL(FG)  
μA  
Charge current  
IFGFIL1  
IFGFIL2  
-7  
3
-5  
5
-3  
7
μA  
μA  
Discharge current  
[FG Amplifier Schmitt Block (IN1)]  
Amplifier gain  
G(FG)  
Design target value*.  
7
8
Times  
mV  
Hysteresis  
V
(FG)  
Design target value*. Input equivalent  
IS  
[S/S Pin]  
High-level input voltage  
Low-level input voltage  
Input open voltage  
Hysteresis  
V
(SS)  
2.0  
0
VREG  
1.0  
V
V
IH  
V
V
(SS)  
(SS)  
IL  
2.6  
0.16  
2.9  
0.25  
100  
3.2  
V
IO  
V
(SS)  
0.34  
130  
V
IS  
High-level input current  
Low-level input current  
[PWMIN Pin]  
I
(SS)  
IH  
VS/S = VREG  
VS/S = 0V  
μA  
μA  
I
(SS)  
IL  
-170  
-130  
Input frequency range  
High-level input voltage range  
Low-level input voltage range  
Input open voltage  
Hysteresis  
f(PI)  
(PI)  
50  
VREG  
1.0  
kHz  
V
V
2.0  
0
IH  
V
V
(PI)  
(PI)  
V
IL  
2.6  
0.16  
2.9  
0.25  
100  
3.2  
V
IO  
V
(PI)  
0.34  
130  
V
IS  
High-level input current  
Low-level input current  
[F/R Pin]  
I
(PI)  
IH  
VPWMIN = VREG  
VPWMIN = 0V  
μA  
μA  
I
(PI)  
-170  
-130  
IL  
High-level input voltage  
Low-level input voltage  
Input open voltage  
Hysteresis  
V
(FR)  
2.0  
0
VREG  
1.0  
V
V
IH  
V
V
(FR)  
(FR)  
IL  
VREG-0.5  
0.16  
VREG  
0.34  
10  
V
IO  
V
(FR)  
0.25  
0
V
IS  
High-level input current  
Low-level input current  
I
(FR)  
IH  
VF/R = VREG  
VF/R = 0V  
-10  
μA  
μA  
I
(FR)  
IL  
-165  
-115  
*: Design target value and no measurement was made.  
No.A0606-3/12  
LB11693JH  
Package Dimensions  
unit : mm (typ)  
3251  
Pd max - Ta  
Mounted on a specified board:  
114.3mm×76.1mm×1.6mm glass epoxy  
17.8  
(6.2)  
2.4  
36  
19  
2.1  
2.0  
1.6  
1.2  
1.09  
0.47  
Independent IC  
1
18  
0.9  
0.8  
(0.5)  
2.0  
0.3  
0.8  
0.25  
0.4  
0
-40  
-20  
0
20  
40  
60  
80  
100  
2.7  
Ambient Temperature, Ta -°C  
ILB01760  
SANYO : HSOP36R(375mil)  
Truth Table  
F/R = ”L”  
F/R = “H”  
SourceSink  
IN1  
H
H
H
L
IN2  
L
IN3  
IN1  
L
IN2  
H
H
L
IN3  
L
1
2
3
4
5
6
OUT2OUT1  
OUT3OUT1  
OUT3OUT2  
OUT1OUT2  
OUT1OUT3  
OUT2OUT3  
H
L
L
L
H
H
H
L
H
H
H
L
L
L
L
H
H
H
L
L
H
H
L
L
H
L
Pin Assignment  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
25  
24  
23  
22  
21  
20  
19  
26  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
Top view  
No.A0606-4/12  
LB11693JH  
Block Diagram  
FG  
RD  
V
CC  
EI-  
TOC  
FG  
CSD  
RD FC  
RD  
LVS  
-
CSD  
CIRCUIT  
FG  
CIRCUIT  
LVSD  
TSD  
EI+  
CTL  
+
V
CC  
CTL AMP  
VD  
VM  
Rd  
Rf  
CURR  
LIM  
PWM  
PWM  
OSC  
COMP  
PWMIN  
CONTROL  
CIRCUIT  
OUT1  
OUT2  
OUT3  
PWMIN  
DRIVER  
VREF  
BGP  
GND1  
FILTER  
HALL AMP  
& MATRIX  
5VREG  
F/R  
S/S  
IN1  
IN2  
IN3  
VREG  
S/S  
F/R FGFIL  
GND2  
VREG  
Pin Functions  
Pin  
No.  
34  
36  
2
Symbol  
Pin Description  
Equivalent Circuit  
OUT1  
OUT2  
OUT3  
GND2  
Motor drive output  
V
CC  
VD  
7
9
4
Motor drive output system ground  
300Ω  
VM  
7
9
VD  
VM  
Low side output transistor drive current supply  
2
4
34 36  
Motor drive output power supply and output current  
detection.  
Connect a resistor (Rf) between this pin and V  
.
CC  
The output current is limited to a value determined  
by the equation I  
= VRF/Rf.  
OUT  
8
V
Power supply  
CC  
(Systems other than the motor drive output)  
5V regulator output  
10  
VREG  
V
CC  
Connect a capacitor (about 0.1µF) between this pin and  
ground for stabilization.  
10  
Continued on next page.  
No.A0606-5/12  
LB11693JH  
Continued from preceding page.  
Pin  
Symbol  
No.  
Pin Description  
Equivalent Circuit  
11  
LVS  
Undervoltage protection voltage detection.  
Connect this pin to VREG if the VREG level is to be  
detected.  
VREG  
If the V  
CC  
series to set the detection level.  
level is to be detected, insert a zener diode in  
52kΩ  
11  
12  
FGFIL  
FG filter.  
VREG  
Normally, this IC will be used with this pin open.  
Connect a capacitor between this pin and ground  
if noise on the FG signal becomes a problem.  
300Ω  
12  
14  
15  
16  
FC  
CSD  
FG  
Control loop frequency characteristics correction.  
Connect a capacitor between this pin and ground.  
VREG  
300Ω  
14  
Constraint protection circuit operating time setting.  
VREG  
300Ω  
15  
One hall-effect sensor FG output.  
(This is an open-collector output.)  
VREG  
16  
Continued on next page.  
No.A0606-6/12  
LB11693JH  
Continued from preceding page.  
Pin  
Symbol  
No.  
Pin Description  
Equivalent Circuit  
17  
RD  
Motor constrained state detection output  
(This is an open-collector output.)  
VREG  
When the motor is constrained: high, when the motor is  
turning: low.  
17  
18  
PWM  
IN  
PWM pulse input.  
VREG  
When low the output will be on and when high the  
outputs will be off. If this pin is used to control this IC,  
connect EI- to ground and connect EI+ to TOC.  
5kΩ  
18  
20  
S/S  
Start/stop control. Low: start, high or open: stop.  
VREG  
5kΩ  
20  
21  
22  
EI+  
EI-  
CTL amplifier noninverting input  
CTL amplifier inverting input  
VREG  
300Ω  
300Ω  
22  
21  
23  
TOC  
PWM waveform comparator (CTL amplifier output)  
VREG  
23  
PWM comparator  
Continued on next page.  
No.A0606-7/12  
LB11693JH  
Continued from preceding page.  
Pin  
Symbol  
No.  
Pin Description  
Equivalent Circuit  
25  
PWM  
PWM oscillator frequency setting.  
VREG  
Connect a capacitor between this pin and ground.  
A frequency of about 20kHz can be set by using  
a 2200pF capacitor.  
200Ω  
25  
26  
GND1  
Ground  
(For circuits other than the motor drive output system)  
Hall effect sensor inputs  
28  
27  
30  
29  
32  
31  
IN1+  
IN1-  
IN2+  
IN2-  
IN3+  
IN3-  
VREG  
High when IN+ > IN-, low for the reverse state.  
Signal inputs with an amplitude (differential) of at least  
50mVp-p are desirable for the Hall inputs.  
If noise is a problem, connect capacitors between  
the IN+ and IN- inputs.  
300Ω  
300Ω  
27 29 31  
28 30 32  
33  
F/R  
Forward/reverse control  
VREG  
Low: forward, high or open: reverse.  
3.5kΩ  
33  
1,3  
5,6  
NC  
No connection.  
The NC pins may be used for wiring connections.  
13,19  
24,35  
FRAME  
Frame connection  
The FRAME pin is connected internally to the IC surface  
metal parts. Both must be used in the electrically open  
state.  
No.A0606-8/12  
LB11693JH  
LB11693JH Overview  
1. Output Drive Circuit  
The LB11693JH reduces motor vibration and noise by switching the output current smoothly when switching phases.  
Since the Hall input waveform is used for the change in (slope of) the output current during phase switching, if the  
slope of the Hall input waveform is too steep, the change in the output current during phase switching will also be too  
steep and the effectiveness of this technique at lowering vibration and noise effect will be reduced. Thus the slope of  
the Hall input waveform requires attention during application design.  
Low side output transistor PWM switching is used for motor speed control. The drive output is adjusted by changing  
the duty. The diodes between the outputs and VM used for the regenerative current when the PWM signal is in the  
off state are built in.  
If the slope (amplitude) of the Hall input waveform is large, and if used with a high current, the parasitic diodes  
between the outputs and ground will operate due to the low side kickback during phase switching. If problems such  
as disruption of the waveforms occur, connect either rectifying diodes or Schottky diodes between the outputs and  
ground.  
2. Power Supply Stabilization  
Since the LB11693JH uses a control method based on PWM switching, the power supply lines are susceptible to  
disruption. Electrolytic capacitors with an adequate capacitance for stabilization must be connected between V  
CC  
and ground. If diodes are inserted in the power supply lines to prevent destruction of the equipment if the power  
supply is connected in reverse, the power supply lines will be particularly susceptible to disruption. In this case, even  
larger capacitors must be used. The connected electrolytic capacitors must be located as close as possible to the IC  
pins (V , VM, and GND2). If the electrolytic capacitors cannot be attached close to the pins due to problems with  
CC  
the heat sink or other issues, ceramic capacitors of about 0.1µF must be attached close to the pins.  
3. VREG Pin  
At the same time as being the 5V regulator output, the VREG pin is also the power supply for the IC internal control  
circuits. Therefore, a capacitor of at least 0.1µF must be connected between the VREG pin and ground to stabilize the  
control circuit power supply. The ground side of the connected capacitor must be connected to the GND1 pin with as  
short a line as possible.  
4. FC Pin  
The capacitor connected to the FC pin is required to correct the control loop's frequency characteristics.  
(It should be about 0.1μF.)  
5. VD Pin  
The VD pin supplies the low side output transistor drive current (a maximum of about 0.1A).  
The IC internal power consumption is suppressed by connecting a resistor between the V  
and VD pins and  
CC  
dividing power consumption due to the low side output transistor drive current with that resistor. Although the IC  
internal power consumption due to the drive current can be reduced by lowering the VD pin voltage, a voltage of at  
least 4V must be assured at the VD pin. Use a resistor in the range from about 50Ω (0.5W) to about 100Ω (1W)  
between the V  
and VD pins when the LB11693JH is used with V = 24V.  
CC  
CC  
6. Hall Effect Sensor Input Signals  
Signal inputs with an amplitude (differential) of at least 50mVp-p are required for the Hall inputs. If the output  
waveforms are disrupted by noise, capacitors must be connected between the Hall input pins (the + and - sides).  
7. Current Limiter Circuit  
The current limiter circuit limits the peak value of the output current to a current determined by the equation I =  
VRF/Rf (where VRF = 0.5V (typical), Rf = current detection resistor value). When the limiter operates, it suppresses  
the current by PWM control of the low side output transistor at the PWM frequency determined by the external  
capacitor connected to the PWM pin, in particular, by reducing the on duty.  
No.A0606-9/12  
LB11693JH  
8. Forward/Reverse Switching  
The LB11693JH was designed assuming that forward/reverse switching would not be performed while the motor is  
operating. We recommend that the F/R pin be held fixed at either the low (forward) or high (reverse) level when the  
motor is turning. Although it will be pulled up to the high level by an internal pull-up resistor (about 40kΩ) when left  
open, this must be strengthened by an external resistor if fluctuations are large.  
If the direction is switched while the motor is turning, large currents will flow due to the braking operation. The  
LB11693JH's current limiter circuit, however, cannot limit this braking current. Therefore, forward/reverse switching  
during motor rotation is only possible if the braking current is limited to a value under I max (1.8A) by the motor  
O
coil resistance or other circuit or phenomenon. Furthermore, since through current will flow in the high and low side  
transistors at the instant the switch occurs with switching that only uses the F/R pin, applications must provide a rive  
off period for switching directions. A drive off period must be provided by either setting the IC to the stopped state  
with the S/S pin or setting the PWM signal to the 0% duty state with the TOC and PWMIN pins, and the F/R pin  
must only be switched during that period to prevent through current.  
9. Power Saving Circuit  
This IC can be set to a power saving state in which current consumption is reduced by setting it to the stopped state  
with the S/S pin. The bias current to most of the circuits in the IC is cut off in this power saving state. Note, however,  
that the 5V regulator output is still provided in the power saving state.  
10. Notes on the PWM Frequency  
The PWM frequency is determined by the capacitance (F) of the capacitor connected to the PWM pin.  
fPWM1/ (23400×C)  
A frequency in the range 15 to 25kHz is desirable for the PWM frequency. The ground side of the connected  
capacitor must be connected to the GND1 pin by as short a line as possible.  
11. Control Methods  
The output duty can be controlled by either of the following methods.  
Comparison of the TOC pin voltage with the PWM oscillator waveform  
This method determines the low side output transistor duty according to the result of comparing the TOC pin  
voltage with the PWM oscillator waveform. The PWM duty will be 0% when the TOC pin voltage is under about  
1.3V and will be 100% when that voltage is over about 3.0V.  
Since the TOC pin is the output of the CTL amplifier, a control voltage cannot be directly input to the TOC pin.  
Accordingly, the CTL amplifier is normally used as a full feedback amplifier (by connecting the EI- pin to the  
TOC pin) and inputting a DC voltage to the EI pin (here the TOC voltage will be equal to the EI+ pin voltage).  
When the EI+ pin voltage increases, the output duty will increase as well. Since the motor will be driven if the EI+  
pin is in the open state, a pull-down resistor should be connected to the EI+ pin in applications where this is not  
desirable.  
A low level must be input to the PWMIN pin (or it must be connected to ground) if the TOC pin voltage control  
system is used.  
PWMIN pulse input  
A 15 to 25kHz frequency pulse signal can be input to the PWMIN pin and the low side output transistor duty can  
be controlled based on the duty of that input signal. When the PWMIN pin is low, the output will be on, and when  
high, the output will be off. When the PWMIN pin is open, the input will go to the high level and the output will be  
off.  
If PWMIN pin control is used, the EI- pin must be connected to ground and the EI+ pin must be connected to the  
TOC pin.  
No.A0606-10/12  
LB11693JH  
12. Undervoltage Protection Circuit  
The undervoltage protection circuit turns off the low side output transistor  
if the LVS pin voltage falls below the circuit's operating voltage (about 3.8V).  
This operating voltage is the detection level for a 5V system. The detection  
level can be increased by connecting a zener diode in series with the LVS pin  
to apply a level shift to the detection level. The current flowing into the LVS  
pin during detection is about 65µA.  
To the detected  
power supply  
To the LVS pin  
To suppress variations in the zener voltage, it is necessary to stabilize the rise of the  
zener diode voltage by increasing the current that flows in the zener diode. If this is  
necessary, insert a resistor between the LVS pin and ground.  
When the LVS pin is open, it will be pulled to the ground level by the built-in pull-down resistor and the output will  
be turned off. Thus if the undervoltage protection circuit is not used, a voltage in excess of the release voltage (about  
4.3V) must be applied to the LVS pin. Note that the maximum rating for the LVS pin voltage is 30V.  
13. Motor Constraint Protection Circuit  
When motor motion is constrained, the external capacitor connected to the CSD pin will be alternately charged (up to  
about 3.0V) with a constant current of about 2.4µA and discharged with a constant current of about 0.17µA (to about  
1.0V). Thus the CSD pin voltage will have a sawtooth waveform. The motor constraint protection circuit turns the  
motor (the low side output transistor) on or off repeatedly based on this sawtooth waveform. Motor drive will be on  
during the period the CSD pin external capacitor is being charged from about 1.0V to about 3.0V and will be off  
when it is being discharged from about 3.0V to about 1.0V. The drive on/off operation protects the IC and the motor  
when the motor is physically constrained from moving. If a 0.47µF capacitor is connected to the CSD pin, the IC will  
iterate an on/off cycle in which drive is on for about 0.4 seconds and off for about 5.5 seconds.  
While the motor is turning, the CSD pin voltage will be held at a certain voltage (that depends on the motor speed) by  
(a) a CSD pin external capacitor discharge operation based on about 10µs discharge pulses generated internally in the  
IC when the Hall input IN1 switches (that is, on rising and falling edges on the FG output) and (b) a charge operation  
on that capacitor by a constant current of about 2.4µA.  
Since the Hall input IN1 does not switch when the motor is physically constrained, the discharge pulses are not  
generated and the CSD pin external capacitor will be charged to about 3.0V by the constant current of about 2.4µA.  
The motor constraint protection circuit operates when the capacitor reaches about 3.0V. The constraint protection  
operation will be released when the motor constraint is released.  
If the motor speed is extremely low, the CSD pin voltage during that motor rotation will be held at a comparatively  
high voltage, and if that voltage reaches about 3.0V, the constraint protection function will operate. Since the  
constraint protection function will operate if the Hall input IN1 frequency falls below about 10Hz, caution is required  
when using the motor constraint protection circuit with motors that will operate at low speeds.  
Connect the CSD pin to ground if the motor constraint protection circuit is not used.  
No.A0606-11/12  
LB11693JH  
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.  
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed  
for volume production.  
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 September, 2010. Specifications and information herein are subject  
to change without notice.  
No.A0606-12/12  
PS  

相关型号:

LB11696V

Direct PWM Drive Brushless Motor Predriver IC
SANYO

LB11696V

Direct PWM Drive Brushless Motor Predriver IC
ONSEMI

LB11696V-D

Direct PWM Drive Brushless Motor Predriver IC
SANYO

LB11696V-MPB-E

Direct PWM Drive Brushless Motor Predriver IC
ONSEMI

LB11696V-TLM-E

Direct PWM Drive Brushless Motor Predriver IC
ONSEMI

LB11696V-TRM-E

Direct PWM Drive Brushless Motor Predriver IC
ONSEMI

LB11697V

Monolithic Digital IC Brushless Motor Driver IC
SANYO

LB11699H

Spindle Motor Driver IC
SANYO

LB11815AG-15-AA3

1.5A CMOS LDO
UTC

LB11815AG-15-TA3

1.5A CMOS LDO
UTC

LB11815AG-15-TN3

1.5A CMOS LDO
UTC

LB11815AG-15-TQ2

1.5A CMOS LDO
UTC