ETA1017 datasheet(1/1 Pages) ETA

Il numero della parte	ETA1017

Spiegazioni elettronici	10關A IQ, 0.85V Startup, 1MHz, 300mA IOUT Synchronous Step-Up DC-DC

PDF	1 Pages

Scroll/Zoom	100%

Produttore elettronici	ETA [ETA SOLUTIONS CO. LIMITED]

Homepage	http://www.etasolution.com

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ETA1017

www.ETAsolution.com

Outperform with Efficiency

Proprietary Information DO NOT Distribute

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10μA IQ, 0.85V Startup, 1MHz, 300mA IOUT Synchronous Step-Up DC-DC

FEATURES



10μA No Load Supply Current



Low Vin Start-up Voltage down to 850mV



Capable of delivering 300mA IOUT at Vin=3.0V, V

out=3.3V



1MHz Switching Frequency



Input boost-strapping allows using small cap



Low Noise PWM control



Internally Compensated Current Mode Control



Internal Synchronous Rectifier



Logic Control Shutdown (IQ<1uA)



Available in SOT23-5

APPLICATIONS

DESCRIPTION

The ETA1017 is a step-up converter that provides a boosted

output voltage from a low voltage source. Because of its

proprietary design, it starts up at a very low input voltage

down to 850mV. Along with its 10uA ultra-low no load input

current, it is an ideal choice for single cell alkaline/NiMH

battery operations.

A switching frequency of 1MHz minimizes solution footprint

by allowing the use of tiny, low profile inductors and

ceramic capacitors. The current mode PWM design is

internally compensated, reducing external parts count.

ETA1017 is housed in a tiny SOT23-5 package.



Medical Instruments



Bluetooth Headsets



Flash-Based MP3 Players



Wireless Mice



One to Three Cell Battery Operated Devices

TYPICAL APPLICATION

OFF

ON

EN

G

FB

SW

OUT

ETA1017

VIN

0.85V to 4.5V

0.47μF

4.7μH

2

3

4

1

5

VOUT

4.7μF

5

7

9

11

13

15

17

19

21

23

25

1.8

2

2.2

2.4

2.6

2.8

3

VIN (V)

No Load IQ Vs VIN

VOUT=3.3V

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