Details

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BUY LT3489EMS8E https://www.utsource.net/itm/p/12604177.html

Parameter	Description	Min	Typ	Max	Unit
Input Voltage (VIN)	Operating input voltage range	3.6		42	V
Output Voltage (VOUT)	Adjustable output voltage				V
Switching Frequency (fSW)	Fixed switching frequency		1.2		MHz
Output Current (IOUT)	Maximum continuous output current			2	A
Efficiency	Typical efficiency at specified conditions		90		%
Quiescent Current (IQ)	Supply current with no load		2.5		mA
Shutdown Current	Supply current in shutdown mode		1		渭A
Thermal Shutdown	Temperature threshold for thermal shutdown protection		160		掳C
Package Type	Surface mount package		MS8

Instructions for LT3489EMS8E

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply ensuring it is within the operating range of 3.6V to 42V.

2. Output Configuration:

   • Set the desired output voltage using external resistors connected to the FB pin according to the datasheet formula.

3. Inductor Selection:

   • Choose an appropriate inductor based on the switching frequency and output current requirements to ensure stable operation.

4. Capacitor Selection:

   • Select input and output capacitors that can handle the ripple current and provide a stable voltage level.

5. Frequency Setting:

   • The device operates at a fixed switching frequency of 1.2MHz, which helps in minimizing the size of external components.

6. Thermal Considerations:

   • Ensure adequate heat dissipation as the device has thermal shutdown protection that activates at approximately 160掳C.

7. Shutdown Operation:

   • To put the device into shutdown mode, pull the SHDN pin low. This reduces the supply current to about 1渭A.

8. PCB Layout:

   • Follow recommended PCB layout guidelines to minimize noise and parasitic effects, enhancing overall performance.

Note: For detailed design considerations and specific application circuits, refer to the official Linear Technology/LT3489EMS8E datasheet.

(For reference only)