AS1324 AMSCO [austriamicrosystems AG], AS1324 Datasheet
AS1324
Manufacturer Part Number
AS1324
Description
1.5MHz, 600mA, DC/DC Step-Down Regulator
Manufacturer
AMSCO [austriamicrosystems AG]
Datasheet
1.AS1324.pdf
(20 pages)
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Manufacturer:
AUSTRIAM
Quantity:
20 000
Part Number:
AS1324-BTTT-12
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AUSTRIAMICROSY
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Part Number:
AS1324-BTTT-15
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Part Number:
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Part Number:
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A S 1 3 2 4
1 . 5 M H z , 6 0 0 m A , D C / D C St e p - D o w n R e g u l a t o r
1 General Description
The AS1324 is a high-efficiency, constant-frequency
synchronous buck converter available in adjustable- and
fixed-voltage versions. The wide input voltage range
(2.7V to 5.5V), automatic powersave mode and minimal
external component requirements make the AS1324
perfect for any single Li-Ion battery-powered application.
Typical supply current with no load is 30µA and
decreases to ≤1µA in shutdown mode.
The AS1324 is available as the standard versions listed
in
Table 1. Standard Versions
An internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. The
internally fixed switching frequency (1.5MHz) allows for
the use of small surface mount external components.
Very low output voltages can be delivered with the inter-
nal 0.6V feedback reference voltage.
The AS1324 is available in a 5-pin TSOT-23 package.
www.austriamicrosystems.com
Figure 1. Typical Application Diagram – High Efficiency Step Down Converter
Table
AS1324-AD
AS1324-12
AS1324-15
AS1324-18
V
IN
Model
= 2.7V to 5.5V
1.
10µF
C
IN
Adjustable via External Resistors
VIN
Output Voltage
EN
4
1
Fixed: 1.2V
Fixed: 1.5V
Fixed: 1.8V
AS1324-
2
18
GND
3
SW
5
VOUT
Revision 1.03
4.7µH
2 Key Features
3 Applications
The device is ideal for mobile communication devices,
laptops and PDAs, ultra-low-power systems, threshold
detectors/discriminators, telemetry and remote systems,
medical instruments, or any other space-limited applica-
tion with low power-consumption requirements.
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High Efficiency: Up to 96%
Output Current: 600mA
Input Voltage Range: 2.7V to 5.5V
Constant Frequency Operation: 1.5MHz
Variable- and Fixed-Output Voltages
No Schottky Diode Required
Automatic Powersave Operation
Low Quiescent Current: 30µA
Internal Reference: 0.6V
Shutdown Mode Supply Current: ≤1µA
Thermal Protection
5-pin TSOT-23 Package
C
10µF
V
OUT
OUT
= 1.8V, 600mA
GND
SW
EN
1
2
3
AS1324-
18
5 VOUT
4 VIN
D a t a S h e e t
1 - 20
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