AMS1073
DESCRIPTION
The
AMS1073
is a monolithic step-down switch
mode converter with a built-in power MOSFET.
It achieves 1.2A peak output current over a
wide input supply range with excellent load and
line regulation. Current mode operation
provides fast transient response and eases loop
stabilization. Fault condition protection includes
cycle-by-cycle current limiting and thermal
shutdown.
FEATURES
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1.2A Peak Output Current
0.35Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 92% Efficiency
0.1μA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.5V to 24V Operating Input Range
Output Adjustable from 0.81V to 15V
Available in SOT23-6
Packages
The
AMS1073
requires a minimum number of
readily available standard external components.
The
AMS1073
is available in SOT23-6
packages.
APPLICATIONS
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Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
WLED Drivers
TYPICAL APPLICATION
12V
V
IN
5
IN
BST
1
C1
10uF
C2
10nF
AMS1073
OFF ON
4
EN
SW
6
L1
4.7uH
R1
49.9K
R2
16.2K
D1
B230A
FB
3
V
OUT
3.3V @ 1.2A
C3
22uF
GND
2
1
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS [ Advanced Monolithic Systems Ltd ]
