Details

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BUY LTC1775CS#PBF https://www.utsource.net/itm/p/12612267.html

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Input Voltage Range	VIN	4.5	-	20	V
Output Voltage Range	VOUT	0.8	-	19	V
Output Current	IOUT	-	3	3	A
Switching Frequency	fSW	-	500	1500	kHz
Efficiency (Typical)	η	-	93	-	%	@ 5V to 3.3V, 1A load
Quiescent Current	IQ	-	60	-	μA
Shutdown Current	ISD	-	1	-	μA
Soft-Start Time	tSS	-	2.5	-	ms
Thermal Shutdown	TSD	-	160	-	°C
Operating Temperature	TOPR	-40	-	125	°C
Storage Temperature	TSTG	-65	-	150	°C
Package Type	-	-	-	-	8-lead SOIC

Instructions:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 4.5V to 20V.
   • Do not exceed the maximum input voltage to avoid damaging the device.

2. Output Voltage (VOUT):

   • Set the output voltage using external resistors according to the formula provided in the datasheet.
   • The output voltage can be adjusted from 0.8V to 19V.

3. Output Current (IOUT):

   • The device can provide up to 3A of continuous output current.
   • Ensure the load does not exceed this limit to prevent overheating or damage.

4. Switching Frequency (fSW):

   • The switching frequency can be set between 500kHz and 1500kHz using an external resistor.
   • Higher frequencies reduce the size of external components but may increase power loss.

5. Efficiency:

   • The typical efficiency is around 93% for a 5V to 3.3V conversion with a 1A load.
   • Optimize the design for higher efficiency by selecting appropriate inductors and capacitors.

6. Quiescent Current (IQ):

   • The quiescent current is typically 60μA, which is low to minimize power consumption in standby mode.

7. Shutdown Current (ISD):

   • When the shutdown pin is activated, the current draw drops to approximately 1μA.

8. Soft-Start Time (tSS):

   • The soft-start time is typically 2.5ms to prevent inrush currents during startup.

9. Thermal Shutdown (TSD):

   • The device will shut down if the temperature exceeds 160°C to protect against overheating.

10. Operating Temperature (TOPR):

    • The operating temperature range is from -40°C to 125°C.
    • Ensure the device operates within this range to maintain reliability.

11. Storage Temperature (TSTG):

    • Store the device in an environment with temperatures ranging from -65°C to 150°C.

12. Package Type:

    • The LTC1775CS#PBF comes in an 8-lead SOIC package.
    • Follow the recommended PCB layout guidelines to ensure proper thermal management and electrical performance.

(For reference only)