AMS1076 Datasheet, PDF (1/5 Pages) Advanced Monolithic Systems Ltd – 1A Output Current 0.45Ω Internal Power MOSFET Switch

DESCRIPTION
The AMS1076 is a monolithic integrated step-
down switch mode converter with an internal
power MOSFET. It achieves 1A continuous
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.
The AMS1076 requires a minimum number of
readily available standard external components.
The AMS1076 is available in SOT23-6 packages.
AMS1076
FEATURES
• 1A Output Current
• 0.45Ω 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 18V Operating Input Range
• Output Adjustable from 0.81V to 15V
• Available in SOT23-6 Packages
APPLICATIONS
• Hand Disk Drive
• xDSL Modems Cable
• Set-Top Box
TYPICAL APPLICATION
V_IN
12V
OFF ON
5
IN
1
BST
CB
10nF
6
SW
AMS1076
D1
B230A
4
EN
GND
2
3
FB
Vout=0.81x(1+R1/R2) (V)
V_OUT
3.3V @ 1A
1
Advanced Monolithic Systems http://www.ams-semitech.com