Details

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BUY LD7120PS https://www.utsource.net/itm/p/6939325.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN		2.7		5.5	V
Output Voltage	VOUT	Fixed	3.3			V
Output Current	IOUT	Continuous		200	300	mA
Quiescent Current	IQ	VOUT = 3.3V, IOUT=0mA		1.8		μA
Dropout Voltage	VDROPOUT	IOUT = 300mA		250		mV
PSRR at 1kHz				60		dB
Operating Temperature	TOPR		-40		85	°C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.

2. Output Voltage (VOUT):

   • The LD7120PS provides a fixed output voltage of 3.3V.

3. Output Current (IOUT):

   • The device can supply a continuous output current up to 300mA. For optimal performance, stay within the typical range of 200mA.

4. Quiescent Current (IQ):

   • When no load is applied (IOUT = 0mA), the quiescent current should be around 1.8μA.

5. Dropout Voltage:

   • At maximum load (300mA), the dropout voltage is typically 250mV. Ensure that the input voltage exceeds the output voltage by at least this amount.

6. Power Supply Rejection Ratio (PSRR):

   • At 1kHz, the PSRR is 60dB, indicating good noise suppression from the input to the output.

7. Operating Temperature (TOPR):

   • The device operates reliably within a temperature range of -40°C to +85°C.

8. Mounting and Layout:

   • Follow standard PCB layout practices to minimize noise and ensure stable operation. Place the device close to the load and use adequate bypass capacitors on both input and output.

9. Capacitor Selection:

   • Use recommended input and output capacitors to stabilize the regulator and improve transient response. Typical values are 1μF ceramic capacitors on both sides.

10. Handling Static Electricity:

    • Handle with care to avoid damage from static electricity; follow ESD precautions during assembly and handling.

(For reference only)