AS3649 datasheet(25/39 Pages) AMSCO

25 / 39 page

AS3649

Datasheet - Detailed Descr i p ti on

www.ams.com/AS3649

1.0-2

25 - 39

ntc_on

0R/W

Enable overtemperature protection on pin NTC (internal comparator

comparing NTC to VNTC_TH)

disabled

enabled

7:4

ntc_current

R/W

Current through the NTC (INTC); it is enabled once the LED current

source (LED_OUT1/2) is operating and ntc_on=1 or the ADC measures

the LED temperature (see NTC - Flash LED Overtemperature Protection

on page 14)

off;

can be used to use an external

current to bias the NTC

40µA

80µA

120µA

160µA

200µA

240µA

280µA

320µA - default

360µA

400µA

440µA

480µA

520µA

560µA

600µA

Table 11. Low Voltage / NTC Register (Continued)

Addr: 4

Low Voltage / NTC Register

This register defines the operating mode with low battery voltages

Bit

Bit Name

Default

Access

Description

AS3649 Datasheet(PDF) 25 Page - ams AG

AS3649 Datasheet(HTML) 25 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Datasheet Download

Link URL