Details

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BUY LTC3707EGN https://www.utsource.net/itm/p/12606498.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage Range	VIN	Continuous	4.5	-	60	V
Output Voltage Range	VOUT	Adjustable	0.8	-	55	V
Switching Frequency	fSW	Internal Oscillator	100	500	-	kHz
Current Limit	ILIM	Overcurrent Protection	-	25	40	A
Efficiency	η	Typical at 12V IN, 5V OUT, 10A	-	93	-	%
Operating Temperature	Toper	Junction Temperature	-40	-	125	°C
Storage Temperature	Tstg	-	-65	-	150	°C
Quiescent Current	IQ	Shutdown Mode	-	15	-	μA
Soft-Start Time	tSS	Typical	-	1	4	ms
Enable Input Threshold	VEN	High to Low	1.18	-	1.32	V
Enable Input Threshold	VEN	Low to High	1.08	-	1.22	V
UVLO Threshold	VUVLO	High to Low	3.0	-	3.5	V
UVLO Threshold	VUVLO	Low to High	2.4	-	2.9	V
Output Voltage Accuracy	ΔVOUT	Full Load to No Load	-	±1	-	%
Package	-	-	-	-	-	28-lead SSOP

Instructions for Using the LTC3707EGN:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 4.5V to 60V.
   • Use appropriate input capacitors to filter noise and stabilize the input voltage.

2. Output Voltage (VOUT):

   • Set the output voltage using the feedback resistor network.
   • The output voltage can be adjusted from 0.8V to 55V.

3. Switching Frequency (fSW):

   • The internal oscillator sets the switching frequency between 100kHz and 500kHz.
   • For external frequency synchronization, use the SYNC pin.

4. Current Limit (ILIM):

   • The overcurrent protection limits the current to between 25A and 40A.
   • Adjust the current limit by setting the appropriate resistor value on the ILIM pin.

5. Efficiency (η):

   • The typical efficiency at 12V IN, 5V OUT, and 10A load is 93%.
   • Optimize efficiency by selecting suitable inductors and output capacitors.

6. Operating Temperature (Toper):

   • The device operates within a junction temperature range of -40°C to 125°C.
   • Ensure proper heat dissipation and cooling for high-power applications.

7. Storage Temperature (Tstg):

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

8. Quiescent Current (IQ):

   • In shutdown mode, the quiescent current is typically 15μA.
   • Use the EN pin to control the shutdown mode.

9. Soft-Start Time (tSS):

   • The soft-start time is adjustable from 1ms to 4ms.
   • Set the soft-start time using an external capacitor on the SS pin.

10. Enable Input (VEN):

    • The enable input has thresholds of 1.18V to 1.32V for high to low and 1.08V to 1.22V for low to high.
    • Use the EN pin to turn the device on or off.

11. Under-Voltage Lockout (UVLO):

    • The UVLO thresholds are 3.0V to 3.5V for high to low and 2.4V to 2.9V for low to high.
    • Ensure the input voltage is above the UVLO threshold to prevent device operation during low input conditions.

12. Output Voltage Accuracy (ΔVOUT):

    • The output voltage accuracy is ±1% from full load to no load.
    • Use high-quality feedback resistors to maintain accuracy.

13. Package:

    • The LTC3707EGN is available in a 28-lead SSOP package.
    • Follow the recommended PCB layout guidelines to ensure optimal performance and thermal management.

(For reference only)