AS3630 datasheet(10/72 Pages) AMSCO

10 / 72 page

AS3630 – 10

8A Supercap Flash Driver

LED Current Sources

ILED_OUT

LED_OUT Current

set by led_current

Limited lifetime max. 20000s,

mode_setting = flash operation;

current specified for each of the two

flash LEDs

(2x)

3000

mode_setting = torch operation

460

mode_setting = PWM operation

duty cycle defined by led_out_pwm

303.9

duty

cycle

Accuracy,

ΔI-10

+10

ILED_OUT_

RIPPLE

LED_OUT ripple

current

ILED=2500mA, BW=20MHz

200

mApp

VFLASH_

COMP

Flash current

source voltage

compliance

Minimum Voltage

between

VSUPERCAP and

LED_OUT to

generate the

programmed

current

(led_current)

led_current_ra

nge =00b or

01b

0.4

10b

0.5

IIND_OUT

Indicator Current

Set by ind_current

in 1mA steps

Range

1.0

8.0

Accuracy,

ΔI-20

+20

VLED_OUT

LED_OUT-

forward voltage

measured on pin

LED_OUT

led_current_range = 00b…10b

2.6

4.4

led_current_range = 11b (4A)

2.6

4.325

ADC

Resolution

bits

Range

ADC input range;

channel selected

by ADC_channel

ADC Code

‘000h

’

‘3FFh’

BAL, VIN, IND_OUT, PGND,

TXMASK/TORCH, STROBE, INT and ON

0.0

5.866

VSUPERCAP

0.0

6.666

NTC

0.0

2.2

VDCDC

0.0

LED_OUT

12.1

Tjunc (AS3630 junction temperature, in ºC) =

round (((4 * ADC_D9-D2 + ADC_D1-D0) - 324) * -1.05042)

ºC

Symbol

Parameter

Conditions

Min

Typ

Max

Units

AS3630 Datasheet(PDF) 10 Page - ams AG

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