L6470H STMicroelectronics, L6470H Datasheet - Page 48

• Manufacturer Part Number: L6470H
• Description: Motor / Motion / Ignition Controllers & Drivers 8 - 45V 7.0A 1/128 Microstepping SPI
• Manufacturer: STMicroelectronics
• Type: Micro Stepping Motor Driverr
• Series: -r

Specifications of L6470H

• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 45 V
• Supply Current: 0.5 mA
• Mounting Style: SMD/SMT
• Package / Case: HTSSOP-28
• Operating Temperature: - 40 C to + 125 C
• Applications: Stepper Motor Driver, 2 Phase
• Evaluation Tools: *
• Number Of Outputs: 1
• Current - Output: 3A
• Voltage - Load: 8 V ~ 45 V
• Voltage - Supply: 3.3V, 5V
• Mounting Type: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Programming manual
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The F_PWM_DEC bits set the multiplication factor of PWM frequency generation.
Table 28.
In the following tables all available PWM frequencies are listed according to oscillator
frequency, F_PWM_INT and F_PWM_DEC values (CONFIG register OSC_SEL parameter
has to be correctly programmed).
Table 29.
F_PWM_
INT
000
001
010
011
100
101
110
0
0
0
0
1
1
1
1
PWM frequency: multiplication factor
Available PWM frequencies [kHz]: 8 MHz oscillator frequency
000
9.8
4.9
3.3
2.4
2.0
1.6
1.4
F_PWM_DEC [2..0]
11.7
001
5.9
3.9
2.9
2.3
2.0
1.7
0
0
1
1
0
0
1
1
Doc ID 16737 Rev 2
13.7
010
6.8
4.6
3.4
2.7
2.3
2.0
0
1
0
1
0
1
0
1
15.6
011
7.8
5.2
3.9
3.1
2.6
2.2
F_PWM_DEC
19.5
100
9.8
6.5
4.9
3.9
3.3
2.8
Multiplication factor
23.4
11.7
101
7.8
5.9
4.7
3.9
3.3
0.625
0.875
0.75
1.25
1.75
1.5
1
2
27.3
13.7
110
9.1
6.8
5.5
4.6
3.9
31.3
15.6
10.4
111
L6470
7.8
6.3
5.2
4.5