AS1310

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

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

Revision 1.04

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Data sheet

1 General Description

optimized for light loads (60mA), where it achieves efficiencies of up

to 92%.

AS1310 operates from a 0.7V to 3.6V supply and supports output

voltages between 1.8V and 3.3V. Besides the available AS1310

standard variants any variant with output voltages in 50mV steps are

available. See Ordering Information on page 14 for more information.

If the input voltage exceeds the output voltage the device is in a

feed-through mode and the input is directly connected to the output

voltage.

In order to save power the AS1310 features a shutdown mode,

where it draws less than 100nA. During shutdown mode the battery

is disconnected from the output.

The AS1310 also offers adjustable low battery detection. If the bat-

tery voltage decreases below the threshold defined by two external

resistors on pin LBI, the LBO output is pulled to logic low.

The AS1310 is available in a TDFN (2x2) 8-pin package.

2 Key Features

Input Voltage Range: 0.7V to 3.6V

Fixed Output Voltage Range: 1.8V to 3.3V

Quiescent Current: 1µA (typ.)

Shutdown Current: < 100nA

Up to 92% efficiency

Output Disconnect in Shutdown

Adjustable Low Battery detection

No external diode or transistor required

Over Temperature Protection

TDFN (2x2) 8-pin package

3 Applications

The AS1310 is an ideal solution for single and dual cell powered

devices as blood glucose meters, remote controls, hearing aids,

wireless mouse or any light-load application.

Figure 1. AS1310 - Typical Application Diagram

0.7V to 3.6V

AS1310

22µF

On

Off

22µF

GND

2

1.8V to 3.3V

7

EN

8

VIN

4

VOUT

6

LBO

1

LBI

Low Battery Detect

L1

6.8µH

LX

3

100nF

5

REF