Details

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BUY NCP1399AMDR2G https://www.utsource.net/itm/p/12612181.html

Parameter	Symbol	Min	Typical	Max	Unit	Conditions
Input Voltage	VIN	4.5	-	26	V
Output Voltage	VOUT	-	0.8 to 20	-	V	Programmable by external resistor divider
Switching Frequency	fSW	-	100	1000	kHz	Adjustable by external resistor
Quiescent Current	IQ	-	2.5	-	mA	No load, VOUT = 5V, VIN = 12V
Load Regulation	-	-	卤1	-	%	10% to 100% load, VOUT = 5V, VIN = 12V
Line Regulation	-	-	卤1	-	%	VIN = 4.5V to 26V, VOUT = 5V, IOUT = 1A
Efficiency	畏	-	92	-	%	VOUT = 5V, VIN = 12V, IOUT = 1A
Start-Up Time	tSTART	-	200	-	ms	VIN = 12V, VOUT = 5V, IOUT = 1A
Short-Circuit Protection	-	-	-	-	-	Automatically restarts after fault condition
Thermal Shutdown	TSD	-	160	-	掳C	Internal thermal shutdown temperature
Operating Temperature	TOPR	-40	-	125	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Using NCP1399AMDR2G

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 4.5V to 26V.
   • Use appropriate input capacitors to stabilize the input voltage.

2. Output Voltage (VOUT):

   • Set the output voltage using an external resistor divider. The formula to calculate the output voltage is: [ V_ = V_ left(1 + fracright) ] where ( V_ ) is typically 0.8V.

3. Switching Frequency (fSW):

   • Adjust the switching frequency by connecting an external resistor to the FREQ pin. The formula to calculate the frequency is: [ f_ = frac{1.44 times 10^6}{R_} ] where ( R_ ) is the resistance in ohms.

4. Quiescent Current (IQ):

   • The quiescent current is minimized to ensure high efficiency even at low loads. It is typically 2.5mA with no load.

5. Load and Line Regulation:

   • Ensure that the load and line regulation are within 卤1% to maintain stable output voltage under varying conditions.

6. Efficiency:

   • The converter is designed for high efficiency, typically around 92%, under optimal conditions.

7. Start-Up Time:

   • The start-up time is approximately 200ms. Ensure that the system can handle this delay during power-up.

8. Short-Circuit Protection:

   • The device has built-in short-circuit protection and will automatically restart after the fault condition is removed.

9. Thermal Shutdown:

   • The device will shut down if the internal temperature exceeds 160掳C to prevent damage.

10. Operating and Storage Temperature:

    • Ensure that the operating temperature is within -40掳C to 125掳C and the storage temperature is within -65掳C to 150掳C.

11. Layout Considerations:

    • Follow good PCB layout practices to minimize noise and ensure reliable operation. Keep the input and output capacitors close to the IC and use wide traces for power connections.

12. Component Selection:

    • Choose appropriate inductors and capacitors based on the desired output current and ripple requirements. Refer to the datasheet for recommended values.

By following these instructions, you can ensure optimal performance and reliability of the NCP1399AMDR2G in your application.

(For reference only)