General Description

The AS1334 is a step-down DC-DC converter designed to power portable applications from a single Li-Ion battery. The device also achieves high-performance in mobile phones and other applications requiring low dropout voltage.

Key Features

■ Output Voltage Ripple: 2mV

■ PWM Switching Frequency: 2MHz

■ Single Lithium-Ion Cell Operation

■ Output Voltage Range: 1.2V to 3.4V

(available in 100mV steps, see Ordering Information on page 17)

■ Fixed Output Voltages:

- 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V

■ Maximum Load Capability of 650mA

■ 97 High Efficiency, 94 Average Efficiency

■ Current Overload Protection

■ Thermal Overload Protection

■ Power-OK

■ Soft Start

■ Low Dropout Voltage (140 mΩ Typ PFET)

■ TDFN(3x3) 8-pin

Applications

The AS1334 is an ideal solution to supply noise sensitive

applications as cellular phones, hand-held radios, RF PC cards,

battery powered RF devices, RFID chipsets, A/D Converter, Sensors

and OpAmps.