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PDF AT2003 Data sheet ( Hoja de datos )
| Número de pieza | AT2003 | |
| Descripción | Wide Input sensorless CC/CV 2A Buck Converter | |
| Fabricantes | Aplustek Integrated Circuits | |
| Logotipo |  |
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AT2003
Wide Input sensorless CC/CV 2A Buck Converter
General Description
AT2003 is a wide input voltage, high efficiency step-
down DC/DC converter that operates in either CV (Con-
stant Output Voltage) mode or CC (Constant Output
Current) mode. AT2003 provides up to 3A output current
at 120kHz switching frequency ,and the CC level can be
adjusted by changing external sensing resister.
The AT2003 provides full protection functions, thermal
shutdown is to prevent over temperature operating from
damage; cycle by cycle current limit is against over
current operating of the switch; and over voltage protec-
tion (OVP) that can avoid high Vout voltage to damage
circuit and capacitor.
The devices is available in PSOP8-8L package and
require very few external devices for operation.
Features
Wide Input Voltage with 9V ~ 40V Operation
Up to 3A Output Current
Fixed Frequency 120 kHz with Easy EMI Control
Constant voltage and constant voltage control
Precision Feedback Voltage 1.2V+-1%
Precision CC Limit with +-5% Accuracy
Integrated 140mohm High Side NMOS
Internal MOS 4.5A Current Peak Protected in Cycle
by Cycle Current Limit
PSOP8-8 Package
Applications
Car Charger/Adaptor
General-Purposed DC/DC Converters with
Ordering and Marking Information
Constant Current Limit
Order Number Package
Top Marking
Rechargeable Portable Devices
AT2003SSP8 PSOP-8L
AT2003S
Pin Configuration
Note: Aplustek products are compatible with the current
IPC/JEDEC J-STD-020 requirement. They are halogen-free,
RoHS compliant and 100% matte tin (Sn) plating that are
suitable for use in SnPb or Pb-free soldering processes.
VCC
GND
FB
COMP
GND
LX
BST
SENN
SENP
Aplustek Integrated Circuits Corp.,
Rev. C00, File Name: AT2001-DSC001
www.sntoweb.com 13667868567 杨秋先生
您放心用产品，我用芯做产品
1
1 page  
AT2003
Parameter
Fault protection Section
CC Control accuracy
Internal Soft Start time
Fault recycle waitting time
High side MOS Section
High side MOS ON resistance
High Side MOS peak current Limit
Symbol
TSS
Trecycle
RDSON
Test Conditions
Min Typ Max Units
-5 -- +5 %
-- 4.5 -- mS
-- 0.5 --
S
-- 0.14 -- ohm
-- 4.5 --
A
Note 1. Exceeding these limits may impaire the life of the device. Exposure to absolute maximum rating conditions
for long periods may affect device reliability.
Note 2. θJA is measured with the component mounted on a high effective thermal conductivity test board in free
air.The exposed pad of the package is soldered directly on the PCB.
Aplustek Integrated Circuits Corp.,
Rev. C00, File Name: AT2001-DSC001
www.sntoweb.com 13667868567 杨秋先生
您放心用产品，我用芯做产品
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AT2003.PDF ] | |
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