A S 1 3 3 0

4 M H z , L o w Vo l ta g e , D C - D C St e p - U p C o n v e r t e r

www.austriamicrosystems.com/DC-DC_Step-Up/AS1330

Revision 1.06

1 - 17

D a ta s h e e t

1 General Description

The AS1330 is a synchronous, low voltage, high efficiency DC-DC

boost converter running at a constant frequency of 4MHz. This very

high oscillator frequency allows the usage of a very a small and low

profile inductor with only 470nH. This results in a board space

requirement of only 43mm² for the complete solutions including all

external components.

AS1330 generates an output voltage between 1.8 and 3.3V from

input voltages down to 0.6V. Therefore it is ideal for application

powered by a single cell battery. AS1330 provides an output current

of 150mA @ 3.3V from a single cell.

To support high efficiency across the entire load range

the AS1330 is equipped with a synchronous rectifier and

features a power save mode for light loads.

To avoid harmful deep discharge of the battery during shutdown the

AS1330 is equipped with an output disconnect function.

AS1330 can either monitor the battery voltage (Sense pin) or report

the status of the output voltage (POK).

The AS1330 is available in a TDFN (2x2mm) 8-pin package.

2 Key Features

Input Voltage Range: 0.6V to 3.0V

Adjustable Output Voltage Range: 1.8V to 3.3V

Fixed Output Voltage: 1.8V, 3.0V

0.85V Low Start-Up Voltage

4MHz Fixed-Frequency

91% Efficiency

Delivers 150mA @ 3.3V (from Single AA Cell)

Automatic Powersave Operation for light Loads

Output Disconnect during Shutdown

Anti-Ringing Control minimizes EMI

Power Okay and Sense pin

TDFN (2x2mm) 8-pin Package

3 Applications

The AS1330 is ideal for space critical applications where ultra-small

size is critical as in medical diagnostic equipment, hand-held

instruments, digital cameras, MP3 players, GPS receivers, and PC

or Memory cards.

AA Battery

AS1330-1.8

C2

On

Off

L1

C1

GND

SW

1.8V

EN

FB

VIN

VOUT

Figure 1. AS1330 - Typical Application Diagram

SENSE

POK