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PDF EUP3401 Data sheet ( Hoja de datos )
| Número de pieza | EUP3401 | |
| Descripción | Synchronous Step-Down Converter | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUP3401
2A, 3MHz Synchronous Step-Down DC-DC
with I2C Compatible Interface
DESCRIPTION
The EUP3401 is a high-frequency synchronous
step-down dc-dc converter optimized for battery-
powered portable applications. Intended for low-power
applications, the EUP3401 supports up to 2A load
current and allows the use of small, low cost inductors
and capacitors.
The device is ideal for mobile phones and similar
portable applications powered by a single-cell Li-Ion
battery. With an output voltage range adjustable via
I2C interface from 0.75V to 1.5375V, the device
supports low-voltage DSPs and processors core power
supplies in smart-phones, PDAs, and handheld
computers.
The EUP3401 operates at 3-MHz fixed switching
frequency. During light load conditions, the regulator
includes a PFM mode to enhance light-load efficiency.
The regulator transitions smoothly between PWM and
PFM modes. In shutdown mode, the current is reduced
to less than 200nA.
The serial interface is compatible with Fast/Standard
and High-Speed mode I2C specification allowing
transfers at up to 3.4 Mbps. This communication
interface is used for dynamic voltage scaling with
voltage steps down to 12.5 mV, for reprogramming the
mode of operation (PFM or Forced PWM) or disable/
enabling the output voltage.
Typical Application Circuit
FEATURES
High Efficiency
3MHz Constant Switching Frequency
2A Available Load Current
I2C Compatible Interface up to 3.4Mbps
43µA Typical Quiescent Current
2.7V to 5.5V Input Voltage Range
Excellent Load and Line Transient Response
Short Circuit and Thermal Protection
Small size, 1µH Inductor Solution
High-Efficiency, Low Ripple, Light-Load PFM
Smooth Transition between PWM and PFM
Pin-Selectable or I2C programmable Output
Voltage
Available in 3mm×3mm TDFN-10 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
PDA, Pocket PCs
Cell Phones, Smart Phones
SmartReflex Compliant Power Supply
Split Supply DSPs and µP Solutions OMAP,
XSCALE
Digital Cameras
Micro DC-DC Converter Modules
DS3401 Ver1.0 Sep. 2012
Figure 1.
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1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet EUP3401.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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