Details

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BUY L2903 https://www.utsource.net/itm/p/12616766.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	Vcc	Operating	4.5		36	V
Quiescent Current	IQ	Vcc = 5V		10		mA
Output Current per Channel	IO	Per channel		1	2	A
Peak Output Current	IOP	Short duration		3		A
Thermal Shutdown	TSD	Typical		160		掳C
Operating Temperature	TOPR		-40		85	掳C

Instructions for L2903:

1. Power Supply Connection:

   • Connect the supply voltage (Vcc) to the power pins. Ensure the voltage is within the operating range of 4.5V to 36V.

2. Ground Connection:

   • Connect the ground (GND) pin to a common ground point in your circuit.

3. Input Signals:

   • Apply control signals to the input pins. These signals determine whether the corresponding output channels are active or not.

4. Output Connections:

   • Connect loads to the output pins. Each channel can handle up to 2A continuously and up to 3A for short durations.

5. Heat Dissipation:

   • The device includes thermal shutdown protection, but ensure adequate heat dissipation, especially when operating at higher currents or temperatures.

6. Temperature Considerations:

   • Operate the device within the temperature range of -40掳C to 85掳C to ensure reliable performance.

7. Protection Circuits:

   • The L2903 has built-in protections including thermal shutdown and current limiting to protect against overload conditions.

8. Layout Recommendations:

   • Keep traces from high current paths as short as possible to minimize voltage drops and potential interference.
   • Place decoupling capacitors close to the Vcc and GND pins to stabilize the supply voltage and reduce noise.

(For reference only)