Details

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BUY L7987 https://www.utsource.net/itm/p/7663607.html
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 16-TSSOP (0.173", 4.40mm Width) Exposed Pad

Parameter	Symbol	Min	Typ	Max	Unit
Output Voltage	Vout	-	8.2	-	V
Input Voltage Range	Vin	9.5	-	30	V
Output Current	Iout	-	1.5	-	A
Dropout Voltage	Vdo	-	1.7	-	V
Quiescent Current	IQ	-	6	-	mA
Power Dissipation	Pd	-	15	-	W
Junction Temperature	Tj	-	125	-	°C

Instructions for L7987

1. Power Supply Connection:

   • Connect the input voltage to the "IN" pin.
   • Ensure the input voltage is within the specified range (9.5V to 30V).

2. Output Connection:

   • Connect the load to the "OUT" pin.
   • The device can supply up to 1.5A of current.

3. Ground Connection:

   • Connect the ground terminal to a common ground point in your circuit.

4. Heat Management:

   • For applications where the power dissipation exceeds safe levels, use an appropriate heatsink to maintain junction temperature below 125°C.

5. Capacitor Placement:

   • Place an input capacitor (typically 0.33 μF) close to the input pin to stabilize the input voltage.
   • Place an output capacitor (typically 0.1 μF) close to the output pin to stabilize the output voltage.

6. Protection Diode:

   • Consider adding a protection diode across the input and output pins to prevent reverse polarity damage.

7. Operating Conditions:

   • Ensure that the operating conditions do not exceed the maximum ratings provided in the parameter table.

(For reference only)