Rainbow-electronics MAX16803 Manual de usuario descargar pdf (Pagina 2)

MAX16803

High-Voltage, 350mA, High-Brightness LED

Driver with PWM Dimming and 5V Regulator

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= V

= +12V, C

= 0.1µF to GND, I

= 0, V

CS-

= 0V, V

DIM

= +4V, connect R

SENSE

= 0.58Ω between CS+ and CS- (Note 1).

= -40°C to +125°C, unless otherwise noted. Typical values are at T

= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

IN, OUT, DIM, and EN to GND ...............................-0.3V to +45V

CS+, CS-, V5 to GND ...............................................-0.3V to +6V

OUT Short Circuited to GND Duration

(at V

= +16V) ........................................................60 minutes

Maximum Current Into Any Pin (except IN and OUT).........±20mA

Continuous Power Dissipation (T

= +70°C)

16-Pin TQFN (derate 33.3mW/

C above +70

C) ......2666.7mW

Operating Junction Temperature Range...........-40°C to +125°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range V

(Note 2) 6.5

40.0

Ground Current I

LOAD

= 350mA 1.4 3 mA

Shutdown Supply Current I

SHDN

EN ≤ 0.6V 12 40 µA

Guaranteed Output Current I

OUT

SENSE

= 0.55Ω

350

Output Current Accuracy 35mA < I

OUT

< 350mA

±3.5

OUT

= 350mA (current pulsed),

12V < V

< 40V

0.5 1.2

Dropout Voltage (Note 3) ∆VDO

OUT

= 350mA (current pulsed),

6.5V < V

< 12V

0.5 1.5

Current rising, DIM rising to 4V 17

Output Current Slew Rate

Current falling, DIM falling to 0.6V 17

mA/µs

Short-Circuit Current V

OUT

= 0V, V

= 12V

400 600 800

LOGIC INPUT

EN Input Current I

100

EN Input Voltage High V

2.8 V

EN Input Voltage Low V

0.6 V

Turn–On Time t

EN rising edge to 90% of OUT 80 µs

CURRENT SENSE (Note 4)

Regulated R

SENSE

Voltage V

RSNS

SENSE

= V

CS+

- V

CS-

196 203 210

CS- Voltage Range

-0.3 +4.1

Input Current (CS+) V

CS+

= 220mV

+14

µA

Input Current (CS-) V

CS+

= 220mV -84 µA

DIM Input Current 1µA

DIM Input Voltage High V

DIM Input Voltage Low V

0.6 V

Turn-On Time t

After DIM rising to 4V (Note 5) 52 µs

Turn-Off Time t

OFF

After DIM falling to 0.6V (Note 5) 38 µs

1 2 3 4 5 6 7 ... 11 12

MAX16803 1
PACKAGE OUTLINE 12

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Rainbow-electronics MAX16803 Manual de usuario Pagina 2

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