AMS1069 Datasheet, PDF (1/5 Pages) Advanced Monolithic Systems Ltd – 2A Output Current

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.
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.
TYPICAL APPLICATION
AMS1069
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
APPLICATIONS
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
INPUT
C5
10nF
2
1
7
IN
EN
BS ₃
SW
AMS1069
8 _SS
FB ⁵
GND
COMP
4
6
C3
3.3nF
3.3V
2A
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