AMS1069
DESCRIPTION
The
AMS1069
is a monolithic synchronous buck
regulator.
The device integrates two
MOSFETs, and provides 2A of continuous load
current over a wide input voltage of 4.75V to
18V. Current mode control provides fast
transient response and cycle-by-cycle current
limit.
FEATURES
2A Output Current
Wide 4.75V to 18V Operating Input Range
Integrated Power MOSFET Switches
Output Adjustable from 0.905V to 15V
Up to 93% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 380KHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
An adjustable soft-start prevents inrush current
at turn-on, and in shutdown mode the supply
current drops to 1µA.
This device, available in an
SOP8/ESOP8
package, provides a very compact solution with
minimal external components.
APPLICATIONS
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
TYPICAL APPLICATION
C5
10nF
INPUT
2
7
IN
EN
1
BS
3
SW
AMS1069
8
SS
GND
4
FB
COMP
6
5
3.3V
2A
C3
3.3nF
V
OUT
=
0.905
×
R1
+
R2
R2
R2 can be as high as 100kΩ, but a typical value
is 10kΩ.
1
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS [ Advanced Monolithic Systems Ltd ]
