www.austriamicrosystems.com/LED-Driver-ICs/AS1112

Revision 1.13

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AS1112

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

7 Electrical Characteristics

VCC = +3.0 to +5.5V, Typical values are at TAMB = 25°C, VCC = 5V (unless otherwise specified). All limits are guaranteed. The parameters with

min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods.

Table 6. Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

TJ

Operating Junction Temperature

-40

+125

°C

VOH

High-Level Output Voltage

IOH = -1mA, SDO

VCC -0.5

V

VOL

Low-Level Output Voltage

IOL = 1mA, SDO, XERR

0.5

V

I

Input Current

VIN = VCC or GND; Pins OEN, TEST,

GSCLK, CLK, SDI, LD

-1

1

A

VIN = VCC; pin MODE, PD

100

VIN = GND; pin MODE, PD

-1

1

ICC

Supply Current

All outputs off, RIREF = 10k

Ω

1.2

3

mA

All outputs off, RIREF = 1.3k

Ω

4

10

All outputs on, RIREF = 1.3k

Ω

15

20

All outputs on, RIREF = 640

Ω

30

40

IPD

Power Down Current

only AS1112

40

nA

ICOC

Constant Output Current

All outputs on, VOUT = 2V,

RIREF = 640

Ω

54

61

69

mA

ILEAK

Leakage Output Current

All outputs off, VOUT = 15V,

RIREF = 640

Ω, OUT0:OUT15

20

nA

∆ICOC

Constant Current Error

VOUT = 2V, RIREF = 640

Ω, OUT0:OUT15

±3

±4.5

%

VOUT = 2V, RIREF = 480

Ω, OUT0:OUT15

±3

±4.5

Device to device, average current from

OUT0:OUT15, RIREF = 1920

Ω (20 mA),

VCC = 5.5V, VOUT = 2V

±3

±4.5

Device to device, average current from

OUT0:OUT15, RIREF = 480

Ω (80 mA),

VCC = 5.5V, VOUT = 2V

±3

±4.5

∆ILNR

Line Regulation

VOUT = 2V, RIREF = 640

Ω OUT0:OUT15

±1

±2.5

%/V

VOUT = 2V, RIREF = 480

Ω OUT0:OUT15

±1

±2.5

∆ILDR

Load Regulation

VOUT = 2 to 4V, RIREF = 640

Ω,

OUT0:OUT15

±0.1

±0.5

%/V

VOUT = 2 to 4V, RIREF = 480

Ω,

OUT0:OUT15

±0.1

±0.5

TTEF

Thermal Error Flag Threshold

Junction temperature

1

1. Specified by design. Not tested.

150

ºC

TTWF

Thermal Warn Flag Threshold

Junction temperature

1

125

ºC

VLSD

LED Short Detection Threshold

VCC = 5V

2.8

V

VCC = 3V

1.7

V

VLOD

LED Open Detection Threshold

0.3

0.4

V

VIREF

Reference Voltage Output

RIREF = 640

Ω

1.20

1.24

1.28

V