ETA1035D2G-T [ETA]

3W, 0.85V Startup Voltage, Synchronous Step-Up Converter with Real-Shutdown and Short-Circuit Protection;
ETA1035D2G-T
型号: ETA1035D2G-T
厂家: ETA Semiconductor    ETA Semiconductor
描述:

3W, 0.85V Startup Voltage, Synchronous Step-Up Converter with Real-Shutdown and Short-Circuit Protection

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ETA1035  
3W, 0.85V Startup Voltage, Synchronous Step-Up Converter with  
Real-Shutdown and Short-Circuit Protection  
DESCRIPTION  
FEATURES  
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Output Disconnect  
Short-circuit Protection  
3W Output Power  
Output to Input Reversed Current Protection  
0.85V Low Start-up Voltage  
VIN range from 0.6V to 4.5V  
Up to 96% Efficiency  
40μA No load IQ and light load PFM Mode  
Internal Synchronous Rectifier  
Current Mode control  
The ETA1035 is a high efficiency synchronous step-up  
converter that can provide up to 3W of power to a boosted  
output from a low voltage source. Unlike most step-up  
converter, not only it starts up at a very low input voltage  
as low as 0.85V, it also incorporates circuits that  
disconnect the input from output, during shutdown,  
short-circuit, output current overloading, or other events  
when output is higher than the input. This eliminates the  
need for an external MOSFET and its control circuitry to  
disconnect the input from output, and provides robust  
output overload protection.  
The ETA1035 starts up from a voltage as low as 0.85V  
making it ideal for applications with single-cell or two-cell  
alkaline, NiCd, and NiMh batteries. A switching frequency of  
2MHz minimizes solution footprint by allowing the use of  
tiny and low profile inductors and ceramic capacitors. An  
internal synchronous MOSFET provides highest efficiency  
and with a current mode control that is internally  
Logic Control Shutdown and Thermal shutdown  
DFN2x2-6 Package  
APPLICATIONS  
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USB OTG for MIDs, Smartphones  
Mobile back-up Battery Chargers  
Alkaline, NiCd, and NiMh batteries applications  
USB powered devices  
compensated, external parts count is reduced to minimal.  
ORDERING INFORMATION  
PART #  
PACKAGE PIN TOP MARK  
ETA1035D2G-T  
DFN2x2-6  
DPYW  
Date Code  
Product Number  
Efficiency Vs IOUT  
100%  
80%  
60%  
40%  
20%  
TYPICAL APPLICATION  
VIN 1.8V  
2.2μH  
2.2nF *needed if Vout>4,5V  
6
5
IN  
SW  
VOUT  
3.3V/0.8A  
3
OUT  
VIN=3V  
4.7μF  
1
EN  
ETA1035  
6.3V  
VIN=2.4V  
VIN=1.8V  
VIN=1.2V  
22μF  
FB  
2
VOUT=3.3V  
GND  
4
0%  
0.01  
0.1  
1
IOUT (A)  
www.ETAsolution.com  
Outperform with Efficiency  
Proprietary Information DO NOT Distribute  
1

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