AS1310-BTDT-XX2 Ver la hoja de datos (PDF) - austriamicrosystems AG

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AS1310-BTDT-XX2

Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter

austriamicrosystems AG 

AS1310

Datasheet - Application Information

9 Application Information

The AS1310 is available with fixed output voltages from 1.8V to 3.3V in 50mV steps.

Figure 14. AS1310 Block Diagram

lid 0.7 to 3.6V

Input

CIN

AG t still va 22µF

6.8µH

LX

VIN

LBI

EN

Driver

and

Control

Logic

Zero

Crossing

Detector

Startup

Circuitry

–

+

Imax

Detection

AS1310

VREF

GND

VOUT

1.8V to 3.3V

Output

COUT

22µF

R3

LBO

REF

CREF

100nF

ms ten 9.1 AS1310 Features

a n Shutdown. The part is in shutdown mode while the voltage at pin EN is below 0.1V and is active when the voltage is higher than 0.7V.

o Note: EN can be driven above VIN or VOUT, as long as it is limited to less than 3.6V.

c Output Disconnect and Inrush Limiting. During shutdown VOUT is going to 0V and no current from the input source is running through

the device. This is true as long as the input voltage is higher than the output voltage.

l Feedthrough Mode. If the input voltage is higher than the output voltage the supply voltage is connected to the load through the device. To

a guarantee a proper function of the AS1310 it is not allowed that the supply exceeds the maximum allowed input voltage (3.6V).

ic In this feedthrough mode the quiescent current is 35µA (typ.). The device goes back into step-up mode when the oputput voltage is 4% (typ.)

Techn below VOUTNOM.

www.austriamicrosystems.com/DC-DC_Step-Up/AS1310

Revision 1.8

12 - 19

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