UNISONIC TECHNOLOGIES CO., LTD

P3586

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2010 Unisonic Technologies Co., Ltd

QW-R103-050.A

PWM CONTROL 3A STEP-DOWN

CONVERTER

DESCRIPTION

The UTC P3586 is a fixed 1.2MHz frequency, voltage mode, PWM

controller with an internal power MOSFET. It supplies 3A continuous

output current over a wide input supply range with excellent load and line

regulation.

An internal reference voltage source provides low output voltage down

to 0.8V for further applications. A PWM control circuit can provide 0~100%

duty ratio.

The reliability of UTC P3586 achieved by such protection circuits. An UVLO (Under voltage lock output) circuit

monitors the VCC supply voltage to prevent wrong logic controls. The controller’s OCP (Over current protection)

current sensing resistor. Over current protection circuit also monitors the voltage on FB pin under short-circuit

conditions.

The UTC P3586 is generally applied in portable devices. For maximum flexibility in determining loop dynamic,

this device is equipped with compensation pin. In addition, it is requiring less external components for operation due

to its configuration.

FEATURES

* 3A Output Current

* 1.2MHz Frequency

* Input Voltage Range: 3.6V to 23V

* 10μA Shutdown Supply Current

* Output Voltage Varies from 0.8V to VCC

* Frequency fold back at Short Circuit

* Protection Circuits:

UVLO, Thermal Shutdown, OCP

*Low ESR Output Capacitor (Multi-Layer Chip Capacitor (MLCC)) Application.

* Halogen Free

ORDERING INFORMATION

Ordering Number

Package

Packing

P3586G-S08-R

SOP-8

Tape Reel