6A, 30V, Synchronous Step-Down  Converter with Programmable Frequency

DESCRIPTION

The EUP3286F is a synchronous, step-down constant

on-time buck regulator capable of driving 6A

continuous load current. The EUP3286F can operate

with an input range from 4.5V to 30V and the output

can be externally set down to 0.8V. The EUP3286F

provides excellent transient response with constant on

time control method while maintaining a nearly

constant frequency. The switching frequency can be

externally programmed from 100KHz to 1MHz.

Fault condition protection includes VIN under-voltage

lockout, cycle-by-cycle current limiting, output over

voltage protection, output under-voltage protection, as

well as thermal shutdown. Internal soft-start minimizes

the inrush supply current and the output overshoot at

initial startup.

The EUP3286F is available in a 4mm x 4mm TQFN-23

package.

Typical Application Circuit

FEATURES

?

Wide Input Voltage Range: 4.5V to 30V

?

6A Output Current

?

Excellent Line and Load Transient

Responses

?

Integrated 30m? N-Channel MOSFET for

High Side

?

Integrated 15m? N-Channel MOSFET for

Low Side

?

Programmable PWM Frequency from

100KHz to 1MHz

?

Internal Soft-Start

?

Selectable Forced PWM or Automatic

PFM/PWM Mode

?

Power Good Monitoring

?

Under-Voltage Protection

?

Over-Voltage Protection

?

Cycle-by-Cycle Current Limit

?

Over-Temperature Protection

?

Available in TQFN-23 4mmx4mm Package

?

RoHS Compliant and Halogen-Free

APPLICATIONS

?

Notebook

?

Mother Board

?

Table PC

?

Hand-Held Portable

?

AIO PC

?

Set-top boxes

?

LCD TV

?

Telecom/Networking/Datacom equipment