RT8581

RT8581

10A, Fully Integrated Synchronous Boost Converter

1 General Description

3 Features

⚫Input Voltage Range: 2V to 12V

The RT8581 is a boost converter that integrates built-in

⚫Output Voltage Range: 4.5V to 12.6V

power transistors, synchronous rectification, and low

⚫Up to 94.5% Efficiency at VIN = 5V, VOUT = 12V, and

supply current to provide a compact solution for

IOUT = 1A

systems using advanced Li-Ion batteries. The RT8581

⚫Soft-Start-Up Time (< 2msec)

is capable of supplying significant energy when the

⚫Adjustable Switching Frequency: 1.2MHz and

battery voltage falls below the voltage required by

1.5MHz

system power ICs.

⚫Adjustable Peak Current Limit: Up to 10A (Typical)

The RT8581 is designed to provide a minimum output

⚫PFM Operation Mode at Light Load (RT8581A)

voltage from a single-cell Li-Ion battery, even when the

⚫Forced PWM Operation Mode at Light Load

battery voltage is below the system’s minimum voltage

(RT8581B)

requirement.

⚫PFM/FPWM Controlled by the Mode Pin

The RT8581 is available in the WQFN-11L 2.5x2 (FC)

(RT8581C)

package. The recommended junction temperature