Details

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BUY LP2950ACZ-3.3 https://www.utsource.net/itm/p/8339261.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating	3.0		20	V
Output Voltage	VOUT	Fixed		3.3		V
Output Current (Max)	IOUT	Continuous			100	mA
Dropout Voltage	VD	IOUT = 100mA		1.5		V
Quiescent Current	IQ	VIN = 5V		60		μA
Shutdown Current	ISD			1		μA
Power Supply Rejection	PSRR	f = 120Hz		70		dB
Load Regulation		IOUT: 0 to 100mA		0.5		%
Line Regulation		VIN: 4.75 to 20V		0.1		%
Thermal Shutdown	TSD			160		°C

Instructions for LP2950ACZ-3.3

1. Power Supply Connection: Connect the input voltage (VIN) between 3.0V and 20V to the input pin. Ensure the input voltage is stable and within the specified range.

2. Output Configuration: The output voltage is fixed at 3.3V. No external components are required for setting the output voltage.

3. Capacitor Requirements: For stability, a minimum of 1μF ceramic capacitor is recommended on the output. Place this capacitor as close as possible to the output and ground pins.

4. Heat Management: The device includes thermal shutdown protection which activates at approximately 160°C. Ensure adequate heat dissipation if operating near maximum load or in high ambient temperatures.

5. Quiescent Current: The quiescent current is typically 60μA at an input voltage of 5V. Keep this in mind when designing low-power systems.

6. Shutdown Functionality: If using the shutdown feature, apply a logic low signal to the SHDN pin to place the regulator in a low-power state where the shutdown current is approximately 1μA.

7. Load and Line Regulation: The device offers good load and line regulation, ensuring stable output voltage under varying conditions.

8. PCB Layout Considerations: Optimize PCB layout by minimizing trace lengths from the input and output capacitors to the regulator pins to reduce noise and improve transient response.

(For reference only)