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Numéro de référence | SC4519H | ||
Description | 3A Step-Down Switching Regulator | ||
Fabricant | Semtech Corporation | ||
Logo | |||
1 Page
POWER MANAGEMENT
Description
The SC4519H is a current mode switching regulator with
an integrated switch, operating at 600kHz with separate
sync and enable functions. The integrated switch allows
for cost effective low power solutions (peak switch current
3 amps). The sync function allows customers to
synchronize to a faster clock in order to avoid frequency
beating in noise sensitive applications. High frequency
of operation allows for very small passive components.
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for fast dynamic
adjustment as
response
the input
varies (ideal for CPE applications where the input is a
wall plug power).
The low shutdown current makes it ideal for portable
applications where battery life is important.
SC4519H
600kHz, 3A Step-Down
Switching Regulator
Features
Integrated 3 Amp switch
600kHz frequency of operation
Current mode controller
Synchronizable to higher frequency up to 1.2MHz
Precision enable threshold
SO-8 EDP package. Lead free product, fully WEEE
and RoHS compliant
Applications
XDSL modems
CPE equipment
DC-DC point of load applications
Portable equipment
The SC4519H is a 600kHz switching regulator
synchronizable to a faster frequency from 750kHz to
1.2MHz.
Typical Application Circuit
D1
VIN
Enable
C3
2 IN
5 EN
1
BST
SW 3
SC4519H
FB 6
8 SYNC
GND
4
COMP 7
C4
C1
L1
D2
R3
VOUT
R1
C2
R2
Revision: September 11, 2007
1
www.semtech.com
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Pages | Pages 14 | ||
Télécharger | [ SC4519H ] |
No | Description détaillée | Fabricant |
SC4519 | 3A Step-Down Switching Regulator | Semtech Corporation |
SC4519H | 3A Step-Down Switching Regulator | Semtech Corporation |
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