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PDF LV8829LF Data sheet ( Hoja de datos )
| Número de pieza | LV8829LF | |
| Descripción | PWM Driver IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1801
LV8829LF
Bi-CMOS IC
For Brushless Motor Drive
PWM Driver IC
Overview
The LV8829LF is a PWM-type driver IC designed for 3-phase brushless motors. It enables the rotational speed to be
controlled by inputting an external PWM pulse signal and varying the duty factor. The IC incorporates a latch-type
constraint protection circuit.
Features
• IO max = 1.5A (built-in output Tr)
• Speed control and synchronous rectification using direct PWM input (supports 3.3V inputs)
• 1-Hall FG output
• Latch type constraint protection circuit (the latch is released by S/S and F/R.)
• Forward/reverse switching circuit, Hall bias pin
• Power save circuit (Power save in stop mode)
• Current limiter circuit, Low-voltage protection circuit, Overheat protection circuit
• Charge pump circuit, 5V regulator output.
• Start/stop circuit (short brake when motor is to be stopped)
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.
72110 SY PC 20100622-S00006 No.A1801-1/13
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LV8829LF
Three-phase logic truth table (IN = “High” indicates the state where IN+ > IN-.)
F/R = ⎡H⎦
F/R = ⎡L⎦
Output
IN1
IN2
IN3
IN1
IN2
IN3
OUT1
OUT2
OUT3
H L H L H L L HM
H L L L HH LMH
HH L L L HML H
L H L H L HH LM
L HHH L L HML
L L HHH LMH L
F/R Output
IN1 IN2 IN3 FG
HLHL
HL L L
HHL L
LHLH
L HHH
L LHH
S/S pin, PWMIN pin
Input state
High or Open
Low
S/S pin
Stop (short brake)
Start
PWMIN pin
Output OFF
Output ON
CSD function
When the S/S pin is in a STOP state
→
When the F/R pin is switched
→
When 0% duty is detected at the PWMIN pin input →
When low-voltage condition is detected
→
When TSD condition is detected
→
Protection released and count reset
Protection released and count reset
Protection released and count reset
Protection released and count reset (Initial reset)
Stop counting
No.A1801-5/13
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LV8829LF
5. Hall Input Signal
A pulse input with the amplitude in excess of the hysteresis (35mV maximum) is required for the Hall inputs.
It is desirable that the amplitude of the Hall input signal be 100mVp-p or more in consideration of the effect of noise
and phase displacement.
If disturbances to the output waveform (during phase switching) occur due to noise, connect a capacitor between the
Hall input pins to prevent such disturbances. In the constraint protection circuit, the Hall input is utilized as a judgment
signal. Although the circuit ignores a certain amount of noise, caution is necessary.
If all three phases of the Hall input signal go to the same input state (HHH or LLL), the outputs are all set to the OFF
state.
If the Hall IC is used, fixing one side of the inputs (either the + or – side) at a voltage within the common-mode input
voltage range (between 0.3V and VREG-1.7V) allows the other input side to be used as an input over the 0V to VREG
range.
○ Method of connecting Hall elements
Type (1) connection (three Hall elements connected in series)
Advantages
• Because the current flowing in Hall elements can be shared by connecting the Hall elements in series, the current
consumption is less than that of a parallel-connected arrangement.
• The use of a current limiting resistor can be eliminated.
• Fluctuations of amplitude with temperature are reduced.
Disadvantages
• Because only 1V can be applied to one Hall device, there is a possibility that adequate amplitude cannot be
obtained.
• The current flowing in the Hall elements varies with temperature.
Type (2) connection (three Hall elements connected in parallel)
Advantages
• The current flowing in the Hall elements can be determined by the current limiting resistor.
• The voltage applied to the Hall elements can be varied, enabling adequate amplitude to be obtained.
Disadvantages
• Because it is necessary to supply current separately to each Hall element, the current consumption becomes large.
• A current limiting resistor is necessary.
• The amplitude varies with temperature.
(1)
VCC
(2)
VCC
HB HB
3V Constant-voltage Output
3V Constant-voltage Output
○ HB pin
The HB pin is used for cutting off the current flowing in the Hall elements during standby (for saving electricity).
The output from the HB pin is set to OFF in the following cases.
• When the S/S pin is in a STOP state
• When 0% duty is detected at the PWMIN pin input
No.A1801-11/13
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| PDF Descargar | [ Datasheet LV8829LF.PDF ] | |
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