AMS1070 Datasheet, PDF (1/7 Pages) Advanced Monolithic Systems Ltd – 3A Continuous Output Current

DESCRIPTION
The AMS1070 is a monolithic synchronous buck
regulator. The device integrates 100mΩ
MOSFETS that provide 3A of continuous load
current over a wide operating input voltage of
4.75V to 23V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
An adjustable soft-start prevents inrush current
at turn-on and in shutdown mode, the supply
current drops below 1µA.
This device, available in an 8-pin ESOP8
package, provides a very compact system
solution with minimal reliance on external
components.
AMS1070
FEATURES
• 3A Continuous Output Current
4A Peak Output Current
• Wide 4.75V to 23V Operating Input Range
• Integrated 100mΩ Power MOSFET Switches
• Output Adjustable from 0.925V to 20V
• Up to 95% Efficiency
• Programmable Soft-Start
• Stable with Low ESR Ceramic Output Capacitors
• Fixed 380KHz Frequency
• Cycle-by-Cycle Over Current Protection
• Input Under Voltage Lockout
• Thermally Enhanced 8-Pin ESOP8 Package
APPLICATIONS
• Distributed Power Systems
• Networking Systems
• Notebook Computers
TYPICAL APPLICATION
INPUT
4.75V to 23V
C5
10nF
C1
10uF/25V
CERAMIC X 2
R4
100K
2
1
7
IN
EN
BS ₃
SW
AMS1070
8
SS
5
FB
GND
COMP
4
6
C4
0.1uF
C3
3.9nF
R3
6.8K
L1
10uH (4A)
R1
26.1K
OUTPUT
3.3V
3A
C2
R2
22uF/6.3V
10K
CERAMIC X 2
1
Advanced Monolithic Systems http://www.ams-semitech.com