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LB11850VA 데이터시트 PDF




Sanyo Semicon Device에서 제조한 전자 부품 LB11850VA은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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기능 Monolithic Digital IC
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LB11850VA 데이터시트, 핀배열, 회로
Ordering number : ENA0609A
LB11850VA
Monolithic Digital IC
For Fan Motor
Single-Phase Full-Wave Pre-Driver
with Speed Control Function
www.DataSheetO4Uv.ceomrview
The LB11850VA is a single-phase bipolar fan motor driver with speed control function that works with a speed feedback
signal. A highly efficient, quiet and low power consumption motor driver circuit, with a high speed accuracy and large
variable speed can be implemented by adding a small number of external components.
This pre-driver is optimal for driving large scale fan motors (with large air volume and large current) such as those used
in servers and consumer products.
Functions and features
Pre-driver for single-phase full-wave drive
PMOS-NMOS is used as an external power TR, enabling high-efficiency and low-power-consumption drive by
means of the low-saturation output and single-phase full-wave drive.
On-chip speed control circuit
The speed control (closed loop control) using a speed feedback signal makes it possible to achieve higher speed
accuracy and lower speed fluctuations when supply voltage fluctuates or load fluctuates, compared with an open-
loop control system. Separately excited upper direct PWM control method is used as the variable-speed control
system.
External PWM input or analog voltage input enabling variable speed control
The speed control input signal is compatible with PWM duty ratio or analog voltages.
On-chip soft start circuit
Lowest speed setting pin
The lowest speed can be set with the external resistor.
Current limiter circuit incorporated
Chopper type current limit at start or lock.
Reactive current cut circuit incorporated
Reactive current before phase change is cut to enable silent and low-consumption drive.
Constraint protection and automatic reset functions incorporated
FG (speed detection), RD (lock detection) output
Constant-voltage output pin for hall bias
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.
32207 MS IM 20070301-S00003 / D0606 MH IM 20060619-S00002 No.A0609-1/15




LB11850VA pdf, 반도체, 판매, 대치품
Pin Assignment
LB11850VA
www.DataSheet4U.com
OUT2P 1
OUT2N 2
VCC 3
SENCE 4
CVI 5
CVO 6
CTL 7
RC 8
SOFT 9
CPWM 10
FG 11
RD 12
24 OUT1P
23 OUT1N
22 SGND
21 5VREG
20 C
LB11850VA
19 EO
18 EI
17 LIM
16 CT
15 IN+
14 HB
13 IN-
Top view
Truth Table
Lock protection CPWM = H
IN- IN+ CT
HL
L
LH
HL
H
LH
Speed control CT = L
EO CPWM
LH
HL
IN-
H
L
H
L
OUT1P
L
OFF
OFF
OFF
OUT1N
L
H
L
H
OUT2P
OFF
L
OFF
OFF
OUT2N
H
L
H
L
FG
L
OFF
L
OFF
Mode
OUT12 drive
OUT21 drive
Lock protection
IN+
OUT1P
OUT1N
OUT2P
OUT2N
Mode
L L L OFF H OUT12 drive
H OFF H
L
L
OUT21 drive
L OFF L OFF H
Regeneration mode
H OFF H OFF L
No.A0609-4/14

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LB11850VA 전자부품, 판매, 대치품
LB11850VA
Description of Pre-driver Block
*1: <Power supply-GND wiring>
SGND is connected to the control circuit power supply system.
*2: <Power stabilization capacitor>
For the signal-side power stabilization capacitor, the capacitance of more than 0.1µF is used.
Connect the capacitor between VCC and GND with the thick pattern and along the shortest route.
*3: <Power-side power stabilization capacitor>
For the power-side power stabilization capacitor, the capacitance of more than 0.1µF is used.
Connect the capacitor between power-side power supply and GND with the thick pattern and along the shortest
route.
www.DataSheet*44U:.co<mIN+, IN- pins>
Hall signal input pins
Wiring needs to be short to prevent carrying noise. If noise is carried, insert a capacitor between IN+ and IN-. The
Hall input circuit is a comparator having a hysteresis of 15mV.
It has a ±30mV (input signal difference voltage) soft switch zone.
It is recommended that the Hall input level is 100mV (p-p) at the minimum.
*5: <CPWM pin>
This is the pin to connect capacitor for generating the PWM basic frequency
Use of CP = 220pF produces oscillation at the frequency of 30kHz which serves as the PWM basic frequency.
Since this pin is also used for the current limiter reset signal, the capacitor must be connected without fail even
when no speed control is implemented.
*6: <CT pin>
This is the pin to connect capacitor for lock detection
Constant-current charging and constant-current discharging circuits are incorporated. When the pin voltage
becomes 3.0V, the safety lock is applied, and when it lowers to 1.0V, the lock protection is reset.
Connect this pin to GND when it is not in use (when lock protection is not required).
*7: <SENSE pin>
This is the pin for current limiter detection
When the pin voltage exceeds 0.21V, current limiting is applied, and the low-side regeneration mode is established.
Connect this pin to GND when it is not in use.
*8: <RD pin>
Lock detection pin
This is the open collector output, which outputs “L” during rotation and “H” at stop. This pin is left open when it is
not in use.
*10: <FG pin>
Speed detection pin.
This is the open collector output, which can detect the rotation speed using the FG output according to the phase
change. This pin is left open when it is not in use.
No.A0609-7/14

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부품번호상세설명 및 기능제조사
LB11850V

Monolithic Digital IC

Sanyo Semicon Device
Sanyo Semicon Device
LB11850VA

Monolithic Digital IC

Sanyo Semicon Device
Sanyo Semicon Device

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