Details

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BUY LP5300B6F https://www.utsource.net/itm/p/12607244.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating	2.7	-	5.5	V
Output Voltage	VOUT	Fixed output	-	3.3	-	V
Quiescent Current	IQ	VIN = 5V	-	60	-	μA
Shutdown Current	ISD	VIN = 5V, SHDN Low	-	1	-	μA
Dropout Voltage	VDROPOUT	IOUT = 100mA	-	280	-	mV
Load Regulation	ΔVOUT	IOUT: 0mA to 300mA	-	1	-	%
Line Regulation	ΔVOUT	VIN: 2.7V to 5.5V	-	0.2	-	%
Transient Response	ΔVOUT	Load Step	-	±30	-	mV
PSRR (Power Supply Rejection Ratio)	PSRR	@ 1kHz	-	65	-	dB

Instructions for LP5300B6F

1. Input Voltage Connection:

   • Connect the input voltage (VIN) within the range of 2.7V to 5.5V. Ensure stable power supply to avoid transient spikes.

2. Output Voltage:

   • The LP5300B6F provides a fixed output voltage of 3.3V. No external resistors are required for setting the output voltage.

3. Quiescent and Shutdown Current:

   • Keep in mind the quiescent current is approximately 60μA under normal operation.
   • To minimize power consumption, use the shutdown feature by pulling the SHDN pin low, which reduces the current to about 1μA.

4. Dropout Voltage Consideration:

   • The dropout voltage is around 280mV at an output current of 100mA. Ensure that the input voltage is sufficiently higher than the output voltage by this margin.

5. Regulation Parameters:

   • The load regulation is typically 1%, ensuring minimal changes in output voltage over varying loads.
   • Line regulation is about 0.2%, indicating stability with changes in input voltage.

6. Transient Response and PSRR:

   • For applications sensitive to voltage transients, note that the transient response is ±30mV for typical load steps.
   • The device offers a power supply rejection ratio (PSRR) of 65dB at 1kHz, providing good noise immunity.

7. Capacitor Selection:

   • Use appropriate input and output capacitors as recommended in the datasheet to ensure stability and optimal performance.

8. Thermal Considerations:

   • Monitor the thermal environment to prevent overheating. Ensure adequate heat dissipation if operating near maximum load conditions.

(For reference only)