MAX16823_08 datasheet(3/12 Pages) MAXIM

Part #	MAX16823

Description	High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection

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Manufacturer	MAXIM [Maxim Integrated Products]

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High-Voltage, 3-Channel Linear High-Brightness

LED Driver with Open LED Detection

_______________________________________________________________________________________

3

Note 1: All devices 100% production tested at TJ = +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: Dropout is measured as follows: Connect a resistor from OUT_ to CS_. Connect RCS_ = 2.85Ω from CS_ to GND.

Set VIN = VOUT + 3V (record VOUT as VOUTA). Reduce VIN until VOUT = 0.97 x VOUTA (record as VINB and VOUTB).

VDO = VINB - VOUTB.

Note 3: Output current rise and fall times are measured with a 62Ω series resistor from OUT_ to CS_.

Note 4: Overtemperature protection does not function if the output of the 3.4V reference (REG) is shorted to ground.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CURRENT SENSE

Regulated CS_ Voltage

VCS_

5mA ≤ IOUT_ ≤ 70mA

193

203

213

mV

Input Current (CS1, CS2, CS3)

Current out of CS_

+1.2

µA

OVERTEMPERATURE PROTECTION (Note 4)

Thermal Shutdown Temperature

155

°C

Thermal Shutdown Hysteresis

23

°C

3.4V REGULATOR (REG)

3.275

3.41

3.547

Output Voltage

VREG

0 ≤ IREG ≤ 4mA

3.221

3.38

3.547

V

REG Short-Circuit Current

VREG = 0V

13

mA

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 12V, CREG = 0.1µF, IREG = 0, CLGC = 15nF, VDIM1 = VDIM2 = VDIM3 = 3.4V, RCS_ = 2.85

Ω from CS_ to GND, TJ = TA = -40°C

to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

Typical Operating Characteristics

(VIN = 12V, CREG = 0.1µF, IREG = 0, VLGC = unconnected, connect RCS_ = 2.85

Ω from CS_ to GND. Connect OUT_ to CS_ through

a resistor, TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.)

VCS_ vs. OUTPUT CURRENT

OUTPUT CURRENT (mA)

0

10203040506070

0.200

0.201

0.202

0.203

0.204

0.205

0.206

0.207

0.208

0.209

0.210

OUTPUT CURRENT vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

0

5

10

15

20

25

30

35

40

0

10

20

30

40

50

60

70

80

90

100

IOUT = 70mA

IOUT = 5mA

OUTPUT CURRENT vs. TEMPERATURE

TEMPERATURE (

°C )

-40 -25 -10 5

20 35 50 65 80 95 110 125

0

10

20

30

40

50

60

70

80

90

100

ILOAD = 5mA

ILOAD = 35mA

ILOAD = 70mA

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