MAX16838AUPV+ datasheet(5/21 Pages) MAXIM

Part #	MAX16838AUPV+

Description	Integrated, 2-Channel, High-Brightness LED Driver with High-Voltage Boost and SEPIC Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

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Integrated, 2-Channel, High-Brightness LED Driver

with High-Voltage Boost and SEPIC Controller

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VEN = 12V, RRT = 12.2kI, RISET = 15kI, CVCC = 1FF, VCC = VDRV = VCFB, DRAIN, COMP, OUT_, FLT = unconnected, VOV

= VCS = VLEDGND = VDIM = VPGND = VSGND = 0V, VGATE = VNDRV, TA = TJ = -40NC to +125NC, unless otherwise noted. Typical

values are at TA = 25NC.) (Note 2)

Note 2: All devices are 100% tested at TA = +125NC. Limits over temperature are guaranteed by design, not production tested.

Note 3: The shutdown current does not include currents in the OV and CFB resistive dividers.

Note 4: Gain = DVCOMP/DVCS, 0.05V < VCS < 0.15V.

Typical Operating Characteristics

(VIN = VEN = 12V, RRT = 12.2kI, RISET = 15kI, CVCC = 1FF, VCC = VDRV = VCFB, VDRAIN = VCOMP = VOUT_, FLT = unconnected,

VOV = VCS = VLEDGND = VDIM = VPGND = VSGND = 0V, VGATE = VNDRV, TA = +25NC, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

FLT LOGIC

Output-Voltage Low

VOL

VIN = 4.75V and ISINK = 5mA

0.4

V

Output Leakage Current

VFILT = 5.5V

-300

+300

nA

OVERVOLTAGE PROTECTION

OV Trip Threshold

VOV rising

1.19

1.23

1.265

V

OV Hysteresis

70

mV

OV Input Bias Current

0 P VOV P 1.3V

-100

+100

nA

THERMAL SHUTDOWN

Thermal Shutdown

165

oC

Thermal Shutdown Hysteresis

15

oC

IIN vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

36

32

28

24

20

16

12

8

2.5

3.0

3.5

4.0

4.5

5.0

2.0

4

40

TA = +125°C

TA = +25°C

TA = -40°C

VIN = 12V

SWITCHING WAVEFORM AT 200Hz

(50% DUTY CYCLE)

MAX16838 toc01

10V/div

VLX

ILED

VOUT

100mA/div

20V/div

0V

0A

1ms/div

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