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EUP3489 Datasheet

500KHz Step-Down Converter

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EUP3489
5A,30V,500KHz Step-Down Converter
DESCRIPTION
The EUP3489 is current mode, step-down switching
regulator capable of driving 5A continuous load with
excellent line and load regulation. The EUP3489
operates with an input voltage range from 4.75V to
30V and the output voltage is externally set from
1.222V to 26V with a resistor divider.
Fault condition protection includes cycle-by-cycle
current limit and thermal shutdown. In shutdown mode
the regulator draws 3µA of supply current. Internal
soft-start minimizes the inrush supply current and the
output overshoot at initial startup.
The EUP3489 require a minimum number of external
components.
Typical Application Circuit
FEATURES
4.75V to 30V Wide Input Operating Range
Output Adjustable from 1.222V to 26V
Up to 5A Output Current
3µA Low Shutdown Current
0.1Internal DMOS Output Switch
Up to 90% Efficiency
Fixed 500kHz Switching Frequency
Internal Compensation
Internal Soft Start
Cycle-by-Cycle Current Limit Protection
Thermal Shutdown Protection
Input Supply Undervoltage Lockout
Available SOP-8 (EP) Package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
LCD TV
Battery Charger
DSL Modems
Distributive Power Systems
Pre-regulator for Linear Regulators
DS3489 Ver0.1 Oct. 2013
Figure 1. 5V Application Circuit
1


Part Number EUP3489
Description 500KHz Step-Down Converter
Maker Eutech Microelectronics
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EUP3489 Datasheet PDF






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