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LB1845 Arkusz danych(PDF) 4 Page - Sanyo Semicon Device

Numer części LB1845
Szczegółowy opis  PWM Current Control Stepping Motor Driver
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1845 Arkusz danych(HTML) 4 Page - Sanyo Semicon Device

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Pin Functions
Timing chart for pin switching operations during PWM drive
Figure 1 Switching Waveforms
toff: Output off time. Determined by external capacitor and resistor Ct and Rt. (toff = Ct
× Rt)
td: Delay time between the point the set current is sensed at the SENSE pin and the point the output turns off.
No. 5505-4/7
LB1845
Pin no.
Pin
Function
1, 14
VBB
Output stage power-supply voltage
2
SENSE1
Set current detection pins.
13
SENSE2
Connect these pins, fed back through noise filters, to E1 and E2.
3
E1
The set current is controlled by the resistors Re inserted between these pins and ground.
12
E2
4, 11
D-GND
Internal diode anode connection
6
OUT 1B
Outputs
7
OUT 1A
8
OUT 2B
9
OUT 2A
15
GND
Ground
27
RC1
Used to set the output off time for the switched output signal.
16
RC2
The fixed off times are set by the capacitors and resistors connected to these pins. toff = CR.
26
VREF1
Output current settings
17
VREF2
The output current is determined by the voltage (in the range 1.5 to 7.5 V) input to these pins.
25
PHASE1
Output phase switching inputs.
18
PHASE2
High-level input: OUT A = high, OUT B = low
Low-level input: OUT A = low, OUT B = high
24
ENABLE1
Output on/off settings
19
ENABLE2
High-level input: output off
Low-level input: output on
22, 23
I01, I11
Digital inputs that set the output current
21, 20
I02, I12
The output currents can be set to 1/3, 2/3, or full by setting these pins to appropriate combinations of high and low levels.
28
VCC
Logic block power supply


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