AS3696

austriamicrosystems

www.austriamicrosystems.com

Rev 1.10 / 1011-04-04

4 - 16

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Power on reset level

Circuit stays in power down until VDD_POR is

reached. G1 – G4 is pulled to GND during

power down

2.4

3.0

V

IDD_q

Quiescent current

VDD= 5V, Default setting, PWM = 0

1

mA

IDD_r

Supply current

VDD = 5V, PWM = 240Hz, Duty = 50%

2.5

10

mA

V2_5

V2_5 regulator output

2.4

2.5

2.6

V

I2_5

V2_5 output current

1

mA

Vref

Reference voltage

1.24

1.25

1.26

V

Rvref

Output resistance Vref

300

3.2.3 Current outputs

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Vdx

Output voltage pins Dx

50

V

Rdx

Input resistance in Dx

PWM = 0 U_DX=16V

PWM = 1

1

0.1

M

M

Vgx

Max output voltage pin Gx

Igx = 1mA

VDD-

0.5

VDD

V

Igx

Max output current pin Gx

1

mA

Rsx

Input resistance pin Sx

1

M

Current accuracy

Trimmed during production

ILED =100mA, Temp = 25°C,

external NMOS-Transistor used,

Vset1 = 250mV

(excluding error of external Rset)

-1.0

+1.0

%

Channel to channel

Current accuracy

Trimmed during production

ILED =100mA, Temp = 25°C,

external NMOS-Transistor used,

Vset1 = 250mV

(excluding error of external Rset)

-1.0

+1.0

%

Current accuracy

Tjunction = -20°C to +100°C

Vset1 = 200mV to 500mV

(1)

external NMOS-Transistor used,

(excluding error of external Rset)

-2.0

+2.0

%

Note:

(1) It is not recommended to use Vset < 200mV in order to minimize influences from PCB-layout and

noise.

3.2.4 Feedback circuit, fault detectors

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IFBmax

Feedback current

maximum

300

uA

RFBmin

Minim output resistance

VDx = 0.3V

300

1000

IFB_g

FB transconductance

-3

mA/V

Vfb

Feedback voltage trip

point

Trip voltage at Pins Dx

0

3

V

Vshort

Short LED detector

Voltage

Short LED detection level voltage

Short will be detected if:

((V_Dx -VsetX) /5 + VsetX) > Vshort

0

2

V

Tovtemp

Over temperature limit

130

140

150

°C