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PDF EUP3451DIR1 Data sheet ( Hoja de datos )
| Número de pieza | EUP3451DIR1 | |
| Descripción | 500KHz Step-Down Converter | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUP3451
3A,30V,500KHz Step-Down Converter
DESCRIPTION
The EUP3451 is current mode, step-down switching
regulator capable of driving 3A continuous load with
excellent line and load regulation. The EUP3451 can
operate with an input voltage range from 4.5V to 30V
and the output can be externally set from 0.8V to 12V
with a resistor divider.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown. In shutdown
mode the regulator draws 1µA of supply current.
Programmable soft-start minimizes the inrush supply
current and the output overshoot at initial startup.
The EUP3451 require a minimum number of external
components.
FEATURES
z 35V Input Surge Protection
z 3A Output Current
z 0.135 Internal DMOS Output Switch
z 4.5V to 30V Input Operating Range
z Output Adjustable from 0.8V to 12V
z Up to 95% Efficiency
z 1µA Shutdown Current
z Fixed 500KHz Frequency
z Thermal Shutdown and Overcurrent Protection
z Input Supply Overvoltage and Undervoltage
Lockout
z Available SOP-8 Package
z RoHS Compliant and 100% Lead(Pb)-Free
APPLICATIONS
z PC Monitors
z Distributed Power Systems
z Networking Systems
z Portable Electronics
Typical Application Circuit
DS3451 Ver1.0 June 2009
Figure 1. 12V to 3.3V/5V Application Circuit
1
1 page  
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
Typical Operating Characteristics
See Figure1, C1 =10uF*2, C2=22uF*2, L=6.8uH, TA=+25°C.
EUP3451
DS3451 Ver1.0 June 2009
5
5 Page 
Packaging Information
EUP3451Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
SOP-8
SYMBOLS
A
A1
D
E1
D1
E2
E
L
b
e
MILLIMETERS
MIN.
MAX.
1.35 1.75
0.10 0.25
4.90
3.90
2.00
2.00
5.80 6.20
0.40 1.27
0.31 0.51
1.27
INCHES
MIN.
0.053
0.004
0.193
0.153
0.081
0.081
0.228
0.016
0.012
0.050
MAX.
0.069
0.010
0.244
0.050
0.020
DS3451 Ver1.0 June 2009
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EUP3451DIR1.PDF ] | |
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