AS1330
4MHz, Low Voltage, DC-DC Step-Up Converter
www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 Revision 1.04 1 - 16
Datasheet
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 compone nts.
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 pack-
age.
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 Disconne ct during Shutdow n
! 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 equip-
ment, hand-held instruments, digital cameras, MP3 play-
ers, GPS receivers, and PC or Memory cards.
AA Battery
AS1330-1.8
C2
On
Off
L1
C1
GND
SW
V
OUT
1.8V
EN
FB
VIN
VOUT
Figure 1. AS1330 - Typical Application Diagram
SENSE
POK
