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PDF EUP3418 Data sheet ( Hoja de datos )
| Número de pieza | EUP3418 | |
| Descripción | 1A Synchronous Step-Down Converter | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUP3418
1.5MHz, 1A Synchronous Step-Down
Converter with Soft Start
DESCRIPTION
The EUP3418 is a constant frequency, current mode,
PWM step-down converter. The device integrates a
main switch and a synchronous rectifier for high
efficiency. The 2.7V to 5.5V input voltage range makes
the EUP3418 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 EUP3418 supports up to
1A 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.
Typical Application Circuit
FEATURES
25µA Quiescent Current at Light Load
High Efficiency up to 96%
1.5MHz Constant Switching Frequency
1A Available Load Current
2.7V 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
Available in SOT23-5, TSOT23-5 Package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
Cellular and Smart Phones
Portable Media Players/ MP3 Players
Digital Still and Video Cameras
Portable Instruments
WLAN PC Cards
DS3418 Ver1.3 Apr. 2011
Figure 1. Adjustable Output
1
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet EUP3418.PDF ] | |
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