Details

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BUY LP3853ES-2.5/NOPB https://www.utsource.net/itm/p/12603384.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Continuous operation	2.7	-	5.5	V
Output Voltage	VOUT	Fixed	-	2.5	-	V
Output Current	IOUT	Continuous	-	100	150	mA
Quiescent Current	IQ	VIN = 5V, VOUT = 2.5V	-	1.8	-	mA
Dropout Voltage	VDROPOUT	IOUT = 150mA	-	0.3	-	V
Power Supply Rejection Ratio (PSRR)	PSRR	f = 100kHz	-	60	-	dB
Operating Junction Temperature	TJ	Continuous operation	-40	-	125	°C
Storage Temperature	TSTG	Non-operating	-65	-	150	°C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Avoid exceeding the maximum input voltage to prevent damage to the device.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 2.5V. No external resistors are required for setting the output voltage.

3. Output Current (IOUT):

   • The device can provide up to 150mA of continuous output current.
   • For optimal performance, keep the output current below 100mA.

4. Quiescent Current (IQ):

   • The quiescent current is typically 1.8mA when the input voltage is 5V and the output voltage is 2.5V.

5. Dropout Voltage (VDROPOUT):

   • The dropout voltage is typically 0.3V at a load current of 150mA.
   • Ensure the input voltage is at least 0.3V higher than the output voltage to maintain regulation.

6. Power Supply Rejection Ratio (PSRR):

   • The PSRR is 60dB at a frequency of 100kHz, indicating good rejection of input voltage variations.

7. Operating Junction Temperature (TJ):

   • The device can operate continuously at junction temperatures from -40°C to 125°C.
   • Ensure proper heat dissipation to avoid overheating.

8. Storage Temperature (TSTG):

   • Store the device in a temperature range of -65°C to 150°C when not in use.

9. Layout Considerations:

   • Place the input and output capacitors as close as possible to the device to minimize noise and improve stability.
   • Use low ESR capacitors for better performance.

10. Capacitor Selection:

    • Input Capacitor (CIN): Use a 1μF ceramic capacitor.
    • Output Capacitor (COUT): Use a 1μF to 10μF ceramic capacitor.

11. Thermal Management:

    • If operating at high output currents or in high ambient temperatures, consider using a heatsink or thermal pad to improve thermal performance.

12. Handling Precautions:

    • Handle the device with care to avoid static discharge, which can damage the internal components.
    • Follow standard ESD (Electrostatic Discharge) handling procedures.

(For reference only)