Details

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BUY S-8435FF https://www.utsource.net/itm/p/8940383.html
S-8435FF DC/DC Step-Up Converter 12V SOT89-5 marking WK STEP-UP Switching Regulator

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Input Voltage	VIN	4.5	-	20	V
Output Voltage	VOUT	1.2	-	5.5	V	Adjustable
Output Current	IOUT	-	1.5	3	A
Quiescent Current	IQ	-	20	50	渭A
Dropout Voltage	VDROP	-	0.5	1.2	V	At IOUT = 3A
Line Regulation	-	-	0.01	0.1	%/V
Load Regulation	-	-	0.01	0.1	%/A
Ripple Rejection	-	60	70	80	dB	At 1kHz
Operating Temperature	TOP	-40	-	125	掳C
Storage Temperature	TSTG	-55	-	150	掳C

Instructions for Use:

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 4.5V to 20V.
   • Avoid exceeding the maximum input voltage to prevent damage.

2. Output Voltage (V_OUT):

   • The output voltage can be adjusted between 1.2V and 5.5V.
   • Use the external resistor network to set the desired output voltage.

3. Output Current (I_OUT):

   • The device can provide up to 3A of output current.
   • For optimal performance, keep the load within the typical range of 1.5A.

4. Quiescent Current (I_Q):

   • The quiescent current is typically around 20渭A but can go up to 50渭A.
   • This is the current consumed by the device when no load is applied.

5. Dropout Voltage (V_DROP):

   • The dropout voltage is the minimum difference between the input and output voltages required to maintain regulation.
   • It is typically 0.5V at 3A but can go up to 1.2V.

6. Line and Load Regulation:

   • Both line and load regulation are very low, ensuring stable output under varying conditions.
   • Line regulation is the change in output voltage per unit change in input voltage.
   • Load regulation is the change in output voltage per unit change in load current.

7. Ripple Rejection:

   • The device provides good ripple rejection, typically ranging from 60dB to 80dB at 1kHz.
   • This helps in maintaining a clean output voltage.

8. Operating and Storage Temperature:

   • The operating temperature range is from -40掳C to 125掳C.
   • The storage temperature range is from -55掳C to 150掳C.

9. Mounting and Handling:

   • Ensure proper mounting to a heat sink if operating at high currents or temperatures.
   • Handle the device with care to avoid static damage.

10. Circuit Design:

    • Refer to the datasheet for recommended circuit designs and component values.
    • Use appropriate capacitors and resistors to ensure stability and performance.

For detailed specifications and application notes, refer to the official datasheet provided by the manufacturer.

(For reference only)