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QC80872 Datasheet

When used in the voltage mode, the voltage command signal is applied to the command amplifier, to control the voltage applied to the motor. The command amplifier output is coupled into the error amplifier. The error amplifier directly varies the PWM duty cycle to control the voltage applied to the motor phase. The nominal PWM frequency in the voltage mode is 50% with zero volts applied to the command input. The PWM duty cycle is var- ied by the voltage applied to the command input according to the transfer function, 12% per volt applied to the command input.The
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QC80872 on stock

Parametar	Symbol	Conditions	Rahngs	Unit
	V2max		11	V
Maximum supply voltage	V12max		11	V
Maximum supply current	132max		16	mA
Allowable power dlssipation	Pd max	Ta60 0C	1.53	W
Operating temperature	Topr		-10 to +65	bC
Storage temparature	Tstg		-55 to +150	oc
	156		-6	mA
Circuit current	16		-3	mA
	133max	Peak current	5	mA
FBP input current	127max	Peak current	10	mA

The clock frequency determines all time periods of the logic part as shown in the table "Electrical Characteristics" under the subheading "Timing" on page 8. With an appropri- ate component selection, the clock frequency, f, is nearly independent of the supply voltage as shown in Figure 3 0n page 4.

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