Datasheet
AS1330
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
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 pack-
age.
2 Key Features
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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 equip-
ment, hand-held instruments, digital cameras, MP3 play-
ers, GPS receivers, and PC or Memory cards.
Figure 1. AS1330 - Typical Application Diagram
L1
SW
AA Battery
VIN
C1
VOUT
V
OUT
1.8V
C2
AS1330-1.8
POK
On
Off
EN
GND
SENSE
FB
Revision 1.04
1 - 16
AMSCO [ AUSTRIAMICROSYSTEMS AG ]
