参数资料
型号: LV11685VH
元件分类: 运动控制电子
英文描述: UNIVERSAL MOTOR CONTROLLER, 1.2 A, PDSO28
封装: HSOP-28
文件页数: 3/4页
文件大小: 177K
代理商: LV11685VH
LB1964M
No.6506-3/4
Block Diagram
GND
M
FG
HB
HALL
IN-
IN+
VCC
OUT1
OUT2
Thermal protection
circuit
Constant voltage
circuit
Control
circuit
Delay circuit
Application Circuit Example
GND
VCC
FG
OUT1
OUT2
IN+
IN-
H
HB
*1
Di
Cr
*2
*3
*1 When a diode is used to protect the IC from destruction in case of reverse connection, the capacitor Cr must be inserted
to provide a regenerative current route. Similarly, a capacitor is needed in the power supply line, even if no diode is
used.
*2 The Hall element is supplied with a constant-voltage bias of approx. 1.27V from the HB pin. This ensures stable output
with good temperature characteristics from the Hall element. Because the LB1964M incorporates a Hall amplifier with
low offset, it provides coil output with a stable duty.
*3 The Hall amplifier does not have a hysteresis characteristic. The OUT1 and IN- pins are at the same phase, and by
arranging the two pins next to each other, chatter during phase switching is prevented. However, if the wiring leading
to the IN- pin is long, some noise interference may occur. In such a case, the following steps should be considered:
(1) Arrange parts layout with priority to proximity of Hall element and IC, to allow short Hall element output wiring.
(2) Insert a resistor of about 10 to 100 kW between OUT1 and IN- to create a hysteresis characteristic.
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