USB Powered 5VDC to 12VDC 500mA Step-Up DC/DC Converter

This high-performance, fixed frequency, current-mode PWM step-up DC/DC converter efficiently produces 12V from input voltages between 3.6V to 5.5V. The project is built using the PAM2423 chip, which includes an integrated power MOSFET that supports a peak current of up to 5.5A. The IC utilizes simple external loop compensation allowing optimization between component size, cost, and AC performance across a wide range of applications. Additional functions include an externally programmable soft-start function for easy inrush current control, internal over-voltage protection (OVP), cycle-by-cycle current limit protection, under-voltage lock-out, and thermal shutdown.

FEATURES

Input Supply 5V DC (Range 3.6V to 5.5V)

Output 12V DC

Load Current Up to 500mA

Output Power LED

Efficiency Up to 90%

Operating Frequency 520Khz

Soft-Start Function

Built-in Over-Voltage Protection (OVP)

Under-Voltage-Lockout

Under Voltage Lockout Threshold 2.5V, Hysteresis 200mV

Over-Current Protection – Threshold 5.5A

Thermal Shutdowns – Threshold 150 Degree Cent.

4 X 2.5MM Mounting Holes

2.54mm Pitch Header Alternate Power Source

Board Detail : 2 layers board of 45.4mm x 37.4mm