LV8741V-TLM-E ON Semiconductor, LV8741V-TLM-E Datasheet - Page 18

• Manufacturer Part Number: LV8741V-TLM-E
• Description: Motor / Motion / Ignition Controllers & Drivers STEPPING MOTOR
• Manufacturer: ON Semiconductor

Specifications of LV8741V-TLM-E

• Motor Type: DC
• No. Of Outputs: 2
• Driver Case Style: SSOP
• No. Of Pins: 44
• Operating Temperature Range: -20°C To +85°C
• Svhc: No SVHC (20-Jun-2011)
• Base Number: 8741
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Details

DCM Mode (DM-High)
(1) DCM mode output control logic
(2) Reset function
(3) Output enable function
(4) Current limit control time chart
(5) Current limit reference voltage setting function
Set current calculation method
The reset function does not operate in DCM mode. In addition, the MONI output is High, regardless of the RST pin
state.
When the OE pin is set Low, the output is forced OFF and goes to high impedance. When the OE pin is set High,
output conforms to the control logic.
The voltage input to the VREF pin can be switched to four-step settings as the reference voltage for setting the current limit.
The reference voltage is set by the voltage applied to the VREF pin and the two inputs ATT1 and ATT2. The current
limit can be set from this reference voltage and the RF resistance value.
(Example) When VREF = 1.5V, setting current ratio = 100% [(ATT1, ATT2) = (Low, Low)] and RNF1 (2) = 0.5Ω,
the current limit value is as follows :
DC11 (21)
High
High
Low
Low
ATT1
High
High
Low
Low
Ilimit = (VREF/3 × Current setting ratio) /RF resistance
Ilimit = 1.5V/3 × 100%/0.5Ω = 1A
High or Low
Parallel input
RST
High
Low
OE
Coil current
fchop
Current mode
Set current
DC12 (22)
High
High
Low
Low
ATT2
High
High
Low
Low
CHARGE
Reset operation not performed
Forced CHARGE
section
Current mode
OUT1 (2) A
Operating mode
OFF
High
Low
Low
SLOW
Operating mode
Output OFF
Output ON
Output
Current setting reference voltage
OUT1 (2) B
VREF/3×100%
VREF/3×67%
VREF/3×50%
VREF/3×33%
LV8741V
OFF
High
Low
Low
High output
CCW (Reverse)
CW (Forward)
MONI
Standby
Mode
Brake
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