Details

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BUY U429B https://www.utsource.net/itm/p/250501.html
Driver For IR Transmitter Diodes (Current Sink)

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	Vcc	4.5	5	5.5	V	Operating supply voltage
Output Current	Iout	-	100	200	mA	Maximum output current
Quiescent Current	Iq	1	2	3	mA	Current consumption in standby
Operating Temp	Toper	-40	-	85	掳C	Operating temperature range
Storage Temp	Tstg	-65	-	150	掳C	Storage temperature range

Instructions for U429B:

1. Power Supply Connection: Connect the power supply pins to a stable voltage source within the specified range of 4.5V to 5.5V.
2. Output Load Management: Ensure that the load connected to the output does not exceed the maximum output current of 200mA to avoid damage or overheating.
3. Thermal Considerations: Operate the device within the temperature range of -40掳C to 85掳C. For extended storage, ensure temperatures remain between -65掳C and 150掳C.
4. Quiescent Current Awareness: The device consumes between 1mA to 3mA in standby mode. Design your system to account for this current draw to optimize power efficiency.
5. Proper Grounding: Ensure all ground connections are secure and have low impedance to maintain optimal performance and reliability.

(For reference only)