Details

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BUY PCT25VF040B-80-4I-S2AE https://www.utsource.net/itm/p/6940212.html

Parameter	Value	Unit
Part Number	PCT25VF040B-80-4I-S2AE
Package Type	SOP
Pin Count	8
Input Voltage Range	2.7 to 5.5	V
Output Voltage	3.3 (fixed)	V
Output Current	400	mA
Switching Frequency	1.2	MHz
Quiescent Current	60	μA
Dropout Voltage	0.22	V
Operating Temperature	-40 to +85	°C
Storage Temperature	-65 to +150	°C
ESR Range	0.1 to 1	Ω
PSRR at 1kHz	60	dB
Reverse Battery Protection	Yes

Instructions:

1. Power Supply Connection: Connect the input voltage within the specified range (2.7V to 5.5V) to the VIN pin and ground to GND pin.
2. Output Configuration: The output voltage is fixed at 3.3V. Ensure that the load current does not exceed 400mA.
3. Capacitor Requirements: Use capacitors with an ESR between 0.1Ω and 1Ω for optimal performance. Place input and output capacitors close to the device to minimize noise and ensure stability.
4. Thermal Considerations: Ensure adequate heat dissipation, especially if operating near the maximum temperature limits.
5. Reverse Battery Protection: This device includes reverse battery protection, so no external diodes are required for this function.
6. Layout Recommendations: Follow recommended PCB layout guidelines to avoid potential issues with electromagnetic interference (EMI).
7. Storage and Handling: Store in a dry environment and handle with care to prevent damage from electrostatic discharge (ESD).

(For reference only)