PL56002 Dual Constant Current Step-Down Switching Regulator

PL56002 Dual Constant Current Step-Down Switching Regulator

1 Features

4.2V to 32V wide operating input range

2.0V to 32V wide operating output range

Dynamical programming of output current and

Output voltage using PWM signal or analog signal

Adjustable Switching Frequency using resistor

Frequency dithering for good EMl performance

Integrated 2-A MOSFET Gate Drivers

Comprehensive protection features including Output

Short Protection(OSP)，Cycle-by-Cycle Peak

Current Limit,thermal requlation, thermal shutdow

input UvLO, output OvP etc.

Dual OutputAverage Current Limiting with stableCC

l00D

QFN3x3-20 Package

2 Applications

Automotive Start-Stop Systems

Industrial PC Power Supplies

USB Power Delivery

3 Description

    PL56002 is a PWM controller, designed for high performance synchronous Buck DC/DC applications

with input voltages 4.2 V to 32 V

    PL56002 employs Constant ON time control. The switching frequency could be set to 150kHz,300kHz

based on different resistor value between FREQ pinand GND pin. The device also features a programmable soft-start function and offers all kinds of protection features including cycle-by-cycle current limiting, input under voltage lockout (UvLO), output over voltage protection (OvP), thermal shutdown and output short prote ction etc.

   PL56002 provides voltage control loop, constantcurrent loop, and thermal regulation loop.

4、Website：www.baitaishengshi.com

5、 Typical Application Schematic