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EUP3408

Eutech Microelectronics
Part Number EUP3408
Manufacturer Eutech Microelectronics
Description 800mA Synchronous Step-Down Converter
Published Jul 17, 2014
Detailed Description EUP3408 1.5MHz, 800mA Synchronous Step-Down Converter with Soft Start DESCRIPTION The EUP3408 is a constant frequency, c...
Datasheet PDF File EUP3408 PDF File

EUP3408
EUP3408

Overview
EUP3408 1.
5MHz, 800mA Synchronous Step-Down Converter with Soft Start DESCRIPTION The EUP3408 is a constant frequency, current mode, PWM step-down converter.
The device integrates a main switch and a synchronous rectifier for high efficiency.
The 2.
5V to 5.
5V input voltage range makes the EUP3408 ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery or 3-cell NiMH/ NiCd batteries.
The output voltage can be regulated as low as 0.
6V.
The EUP3408 supports up to 800mA load current and can also run at 100% duty cycle for low dropout applications, extending battery life in portable systems.
Switching frequency is internally set at 1.
5MHz, allowing the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency while eliminates the need for an external Schottky diode.
The EUP3408 is available in an adjustable version and fixed output voltage of 1.
2V ,1.
8V and 3.
3V.
FEATURES High Efficiency up to 96% 1.
5MHz Constant Switching Frequency 800mA Available Load Current 270µA Typical Quiescent Current 2.
5V to 5.
5V Input Voltage Range Adjustable Output Voltage as Low as 0.
6V 100% Duty Cycle Low Dropout Operation No Schottky Diode Required Short Circuit and Thermal Protection Excellent Line and Load Transient Response ＜1µA Shutdown Current Soft Start Function Over Voltage Protection Available in 1.
2V,1.
8V,3.
3V and adjustable voltages Available in SOT23-5, TSOT23-5 Package RoHS Compliant and 100% Lead(Pb)-Free APPLICATIONS Cellular and Smart Phones Portable Media Players/ MP3 Players Digital Still and Video Cameras Portable Instruments WLAN PC Cards Typical Application Circuit Figure 1.
Adjustable Output DS3408 Ver1.
4 Aug.
2011 1 EUP3408 Typical Application Circuit (continued) Figure 2.
Fixed 1.
2V/1.
8V/3.
3V Output Pin Configurations Package Type Pin Configurations Package Type Pin Configurations SOT23-5 TSOT23-5 ADJ Voltage SOT23-5 TSOT23-5 Fixed Voltage Pin Description PIN EN GND SW VIN ...


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