AL1783Q

Document number: DS46208 Rev. 1 - 2

7 of 14

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January 2024

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AL1783Q

Typical Performance Characteristics (@TA = +25°C, VIN = 12V, RREF = 48kΩ, ILED = 125mA, unless otherwise specified.)

(continued)

-50 -40 -30 -20 -10 0

10 20 30 40 50 60 70 80 90 100 110 120 130

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Temperature('C)

-50 -40 -30 -20 -10 0

10 20 30 40 50 60 70 80 90 100 110 120 130

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

6.0

6.1

6.2

Temperature('C)

-50 -40 -30 -20 -10 0

10 20 30 40 50 60 70 80 90 100 110 120 130

100

105

110

115

120

125

130

135

140

145

150

Temperature('C)

VIN UVLO Voltage vs. Temperature

LED Current vs. Temperature

Minimum LED Voltage vs. LED Regulation Current

LED Current vs. RREF

Temperature (°C)

Temperature (°C)

LED Current vs. VLED Voltage

Temperature (°C)

Minimum LED Voltage vs. Temperature

(RREF = 48kΩ, ILED = 125mA)

0

20

40

60

80

100

120

140

160

180

200

220

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

RREF (Kohm)

20

40

60

80

100 120 140 160 180 200 220 240 260 280 300

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

ILED (mA)

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0

0

25

50

75

100

125

150

175

200

225

250

275

300

VLED (V)

ILEDX=250mA

ILEDX=125mA

ILEDX=50mA