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AME5297 fiches techniques PDF

AME - Step Down DC/DC Converter

Numéro de référence AME5297
Description Step Down DC/DC Converter
Fabricant AME 
Logo AME 





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AME5297 fiche technique
AME
AME5297
3A, 18V, 500KHz Synchronous
Step-Down DC/DC Converter
n General Description
The AME5297 is a high frequency synchronous
stepdown DC-DC converter with built internal power
MOSFETs. That provides wide 4.5V to 18V input voltage
range and 3A continuous load current capability. The
AME5297 has synchronous mode operation for higher
efficiency over output current load range.
The AME5297 is current mode control scheme which
provides fast transient reponse. Internal compensation
function.
n Features
l Wide 4.5V to 18V Operating Input Range
l 80m/30mLow RDS(ON) internal Power
MOSFETs
l Proprietary Switching Loss Reduction Techn
-ique
l High Efficiency Synchronous Mode Operation
l Fixed 500KHz Switching Frequency
l External Programmable Soft Start
l OCP and Hiccup
l Thermal Shutdown
l Output Adjustable from 0.8V
l RoHS Compliant and Halogen Free
n Application
l Notebook Systems and I/O Power
l Digital Set Top Boxes
l LCD Display, TV
l Networking, XDSL Modem
n Typical Application
VIN 4.5-18V
C1
22uF
25V
C3
1uF
C4
22nF
EN
IN BST
VCC
SW
AME5297
SS
EN/SYNC FB
GND
R4
10
C4
0.1uF
L1
4.7uH
R1
40.2K
R3
33K
3.3V 3A
VOUT
C2
47uF
R2
13K
Rev. A.05
1

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