Page 6

ams Datasheet

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[v1-06] 2015-Apr-07

AS1111 − Electrical Characteristics

All limits are guaranteed. The parameters with min and max

values are guaranteed with production tests or SQC (Statistical

Quality Control) methods.

Figure 6:

Electrical Characteristics

Electrical Characteristics: Shows the Electrical Characteristics of the LED Driver. TAMB = –40 to 85°C (unless

otherwise specified)

Note(s) and/or Footnote(s):

1. Efficiency = (VIN – VSAT)/VIN. Guaranteed by design.

Symbol

Parameter

Note

Min

Typ

Max

Unit

VSAT

Cathode Voltage

at pins I1, I2, I3, I4, I1/I2,

I3/I4

0.15

0.6

3.6

V

VEN_HIGH

Enable Voltage High

pin EN

2.2

3.6

V

VEN_LOW

Enable Voltage Low

pin EN

0

0.5

V

ISET

ISET range

VEN = 3V

25

150

μA

ISET_OFF

ISET in OFF mode

VCTRL = 3V, VSAT = 3V,

VEN = 0V

0.1

1

μA

IIN_OFF

IIN in OFF mode

VCTRL = 3V, VSAT = 3V,

VEN = 0V, TAMB = 25°C

0.1

1

μA

VCTRL = 3V, VSAT = 3V,

VEN = 0V,

TAMB = -40°C to 85°C

(for AS1111A)

4

μA

VCTRL = 3V, VSAT = 3V,

VEN = 0V,

TAMB = -40°C to 85°C

2

μA

Eff (1)

Peak Efficiency

VIN = 3V, VEN = 3V

95

%

Match

LED to LED Current

Matching

VEN = 3V

-3

3

%

Electrical Characteristics