LB1991 데이터 시트보기 (PDF) - SANYO -> Panasonic
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LB1991 Datasheet PDF : 7 Pages
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LB1991V
Pin Functions
Pin No.
1
2
3
Pin
VCC1
VCC2
VS
Equivalent circuit
Supply voltage for all circuits other than the IC internal output block and
the amplitude control block.
Supply voltage for the IC internal output control block and the
amplitude control block.
Motor drive power supply. The voltage applied to this pin must not
exceed VCC2.
5
UOUT U phase output
7
VOUT V phase output (These outputs include built-in spark killer diodes.)
9
WOUT W phase output
6, 8
Rf Ground for the output power transistors
10
VH+
Hall element bias voltage supply
A voltage that is typically 0.95 V is generated between the VH+ and
VH– pins. (When IH is 5 mA.)
11
VH–
Ground for circuits other than the output transistor
13
GND
The Rf pin potential is the lowest output transistor potential.
Forward/reverse selection. Applications can select motor forward or
14
FRC reverse direction rotation using this pin. (This pin has hysteresis
characteristics.)
15
STBY
Selects the bias supply for all circuits other than the FG comparators.
The bias supply is cut when this pin is set to the low level.
16
UIN1 U phase Hall element input
The logic high level is the state where the IN+ voltage is greater than
17
UIN2 the IN- voltage.
18
VIN1 V phase Hall element input
The logic high level is the state where the IN+ voltage is greater than
19
VIN2 the IN- voltage.
20
WIN1 W phase Hall element input
The logic high level is the state where the IN+ voltage is greater than
21
WIN2 the IN- voltage.
12
ANGLE
Hall input/output gain control. The gain is controlled by the resistor
connected between this pin and ground.
22 FGIN+ FG comparator noninverting inputs. There is no internally applied bias.
23
FGIN– FG comparator inverting inputs. There is no internally applied bias.
24 FGOUT FG comparator outputs. There is an internal 20-kΩ resistor load.
Pin function
No. 5792-4/7
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