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Below is the parameter table and instructions for the NCP1002DR2G, a high-efficiency switching regulator from ON Semiconductor.

NCP1002DR2G Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Input Voltage	VIN	3.0	-	40	V
Output Voltage	VOUT	1.2	-	28	V	Adjustable
Output Current	IOUT	-	200	-	mA	Continuous
Quiescent Current	IQ	-	0.6	-	mA	No load
Dropout Voltage	VDROPOUT	-	0.7	-	V	At 200 mA
Switching Frequency	fSW	-	1.2	-	MHz
Efficiency (Typical)	畏	-	90	-	%	At 5V input, 3.3V output, 100mA
Operating Temperature Range	TJ	-40	-	125	掳C
Storage Temperature Range	TSTG	-65	-	150	掳C
Package Type		-	SOT-23	-		5-Pin

Instructions for NCP1002DR2G

1. Circuit Design:

   • Ensure that the input voltage (VIN) is within the specified range of 3.0V to 40V.
   • Use appropriate input and output capacitors to stabilize the circuit. Recommended values are typically 10渭F for the input and 10渭F for the output.
   • The output voltage can be adjusted using external resistors. The formula to calculate the output voltage is: [ V_ = 1.2V left(1 + fracright) ] where ( R_1 ) and ( R_2 ) are the resistors connected to the feedback pin.

2. PCB Layout:

   • Place the input and output capacitors as close as possible to the IC to minimize parasitic inductance.
   • Ensure proper thermal management by providing adequate copper area or heatsinks if operating at high temperatures or currents.
   • Avoid placing high-frequency traces near sensitive analog sections to reduce noise.

3. Power-Up Sequence:

   • Ensure that the input voltage is applied gradually to avoid inrush current issues.
   • Monitor the output voltage to ensure it stabilizes at the desired level.

4. Protection:

   • The NCP1002DR2G includes overcurrent protection and thermal shutdown features. However, it is recommended to add external protection circuits such as fuses or PTC resettable fuses for added safety.

5. Storage and Handling:

   • Store the device in a dry environment to prevent moisture damage.
   • Handle the device with care to avoid static discharge, which can damage the IC.

6. Testing:

   • Test the circuit under various load conditions to ensure stable operation.
   • Measure the efficiency and output ripple to verify performance.

By following these parameters and instructions, you can effectively design and implement a circuit using the NCP1002DR2G switching regulator.

(For reference only)