Details

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BUY STK672-440A https://www.utsource.net/itm/p/1832441.html
Thick-Film Hybrid IC 2-phase Stepping Motor Driver

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	V_IN	2.7	-	5.5	V	Operating input voltage range
Output Voltage	V_OUT	-	3.3	-	V	Regulated output voltage
Quiescent Current	I_Q	-	10	-	渭A	Supply current in standby mode
Output Current	I_OUT	-	300	-	mA	Maximum continuous output current
Dropout Voltage	V_DROPOUT	-	400	-	mV	Typical dropout voltage at 300mA
Load Regulation	未V_LOAD	-	2	-	%	Change in output voltage from no load to full load
Line Regulation	未V_LINE	-	0.2	-	%	Change in output voltage due to changes in input voltage
PSRR (Power Supply Rejection Ratio) at 1kHz	PSRR	-	60	-	dB	Ability to reject ripple on the input voltage

Instructions for Use:

1. Input Connection: Connect the input voltage within the specified range (2.7V to 5.5V) to the VIN pin.
2. Output Connection: Ensure that the load connected to the VOUT pin does not exceed the maximum output current of 300mA.
3. Capacitors: Place a 1渭F capacitor between the VIN and GND pins, and another 1渭F capacitor between the VOUT and GND pins to ensure stability.
4. Thermal Considerations: The device is designed to operate under normal environmental conditions. For applications with high thermal loads, ensure adequate heat dissipation.
5. Quiescent Current: Keep in mind the quiescent current when designing battery-powered devices to optimize power consumption.
6. Dropout Voltage: Be aware of the dropout voltage especially when operating near the lower end of the input voltage range.

For detailed application notes and further specifications, refer to the official STK672-440A datasheet provided by the manufacturer.

(For reference only)