AME5297 Datasheet, PDF (3/14 Pages) Analog Microelectronics – Step-Down DC/DC Converter

AME
AME5297
3A, 18V, 500KHz Synchronous
Step-Down DC/DC Converter
n Pin Configuration
TSOT-23-8
Top View
8765
AME5297
12 34
AME5297-AEAxxx
1. SS
2. IN
3. SW
4. GND
5. BST
6. EN
7. VCC
8. FB
* Die Attach:
Conductive Epoxy
n Pin Description
Pin No.
1
2
3
4
5
6
7
8
Pin Name
SS
IN
SW
GND
BST
EN
VCC
FB
Pin Description
Soft-Start Control Input. SS controls the soft-start period. Connect a
capacitor from SS to GND to set the soft-start period.
Supply Voltage. The AME5297 operates from a +4.5V to +18V input rail. C1
is needed to decouple the input rail. Use wide PCB trace to make the
connection.
Switch Node. Connect this pin to an external L-C filter.
System Ground. This pin is the reference ground of the regulated output
voltage. For this reason care must be taken in PCB layout. Suggested to be
connected to GND with copper and vias.
Bootstrap for High Side Gate Driver. Connect a 0.1µF or greater ceramic
capacitor from BST to SW pins.
Enable. EN high to enable the AME5297.
Bias Supply. Decouple with a 0.1µF-to-1µF cap.
Feedback Input. It's used to regulate the output of the converter to a set
value via an extermal resistive voltage divider.
Rev. A.05
3