Details

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BUY SC1161D2 https://www.utsource.net/itm/p/12605908.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating condition	2.7	-	5.5	V
Output Voltage	VOUT	Fixed output	1.8	3.3	5.0	V
Quiescent Current	IQ	VIN = 5V, no load	-	1.0	-	μA
Dropout Voltage	VDROPOUT	IOUT=500mA	-	0.3	-	V
Load Regulation	ΔVOLoad	1mA to 500mA	-	0.5	-	%
Line Regulation	ΔVOLine	VIN=2.7V to 5.5V	-	0.1	-	%
Ripple Rejection	RR	1kHz	-	60	-	dB

Instructions for SC1161D2

1. Power Supply Connection:

   • Connect the input voltage (VIN) between 2.7V and 5.5V to the VIN pin.
   • Ensure proper decoupling capacitors are placed close to the VIN and GND pins to minimize noise.

2. Output Configuration:

   • The SC1161D2 provides a fixed output voltage of 1.8V, 3.3V, or 5.0V depending on the model selected.
   • Verify the output voltage using a multimeter after power-up.

3. Quiescent Current Consideration:

   • The quiescent current is typically 1.0 μA at VIN = 5V with no load.
   • This low quiescent current makes it suitable for battery-operated devices.

4. Dropout Voltage:

   • Operates efficiently even when the dropout voltage is as low as 0.3V at 500mA load.
   • Ideal for applications where input voltage is close to the output voltage.

5. Load and Line Regulation:

   • Maintain good regulation under varying loads from 1mA to 500mA.
   • Line regulation ensures minimal changes in output voltage over the input voltage range.

6. Ripple Rejection:

   • Provides 60dB ripple rejection at 1kHz, ensuring a clean output signal.
   • Use additional filtering if necessary for sensitive circuits.

7. Thermal Considerations:

   • Ensure adequate heat dissipation, especially at higher load currents.
   • Consider thermal vias or heatsinks if operating near maximum load conditions.

8. PCB Layout Recommendations:

   • Place the device away from high-frequency noise sources.
   • Keep the ground plane solid and unbroken around the device for optimal performance.

(For reference only)