Details

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BUY MAX6703SKA-T https://www.utsource.net/itm/p/4878489.html
Low-Voltage, SOT23 P Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating range	4.5		18	V
Output Voltage	VOUT	Adjustable output		0.9	5.5	V
Output Current	IOUT	Continuous load current			300	mA
Quiescent Current	IQ	Typical		2.5		μA
Shutdown Current	ISD	VSHDN = 0V		0.1		μA
Dropout Voltage	VDROPOUT	IOUT = 10mA, VIN = VOUT + 2V		0.2		V
Reference Voltage	VREF			1.2		V
Power Supply Rejection	PSRR	@ 1kHz		70		dB
Line Regulation	ΔVOUT/ΔVIN	IOUT = 10mA		0.002		%/V
Load Regulation	ΔVOUT/ΔIOUT	VIN = 5V		0.001		%/mA

Instructions for MAX6703SKA-T

1. Power Supply Connection:

   • Connect the input voltage (VIN) to a supply within the operating range of 4.5V to 18V.
   • Ensure that the input capacitor is placed close to the VIN pin for stability.

2. Output Configuration:

   • The output voltage can be adjusted using external resistors connected to the FB pin.
   • Follow the formula provided in the datasheet to calculate resistor values for desired output voltage.

3. Shutdown Operation:

   • Apply a low signal to the SHDN pin to place the device in shutdown mode, reducing power consumption.
   • A high signal on the SHDN pin enables normal operation.

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at higher currents or in high ambient temperatures.
   • Use a heatsink if necessary based on the thermal resistance and power dissipation calculations.

5. Bypass Capacitors:

   • Place bypass capacitors near the IC to reduce noise and improve transient response.
   • Typically, use a 0.1μF ceramic capacitor for high-frequency decoupling and a larger electrolytic capacitor for bulk capacitance.

6. Stability:

   • The regulator is stable with ceramic output capacitors; however, ensure the ESR (Equivalent Series Resistance) falls within the recommended range to maintain stability.

For detailed design considerations and application circuits, refer to the full datasheet available from the manufacturer.

(For reference only)