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MAX16804 Datasheet(PDF) 2 Page - Maxim Integrated Products

Part No. MAX16804
Description  High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX16804 Datasheet(HTML) 2 Page - Maxim Integrated Products

 
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High-Voltage, 350mA LED Driver with
Analog and PWM Dimming Control
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = VEN = 12V, CV5 = 0.1µF, IV5 = 0, CS- = GND, RSENSE = 0.56
Ω (see the Typical Operating Circuit), VDIM = 4V, TA = TJ = -40°C
to +125°C, unless otherwise noted. Typical values are at TA = TJ = +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 to GND ...............................................................-0.3V to +45V
DIM, OUT, EN to GND .................................-0.3V to (VIN + 0.3V)
IN Slew Rate (20V < VIN < 45V) ...................................250mV/µs
CS+, V5 to GND .......................................................-0.3V to +6V
CS- to GND............................................................-0.3V to +0.3V
OUT Short Circuited to GND Duration
(at VIN < +16V).................................................................1hour
Maximum Current Into Any Pin (except IN and OUT).........±20mA
Continuous Power Dissipation (TA = +70°C)
20-Pin TQFN (derate 34.5mW/°C above +70°C) ......2758.6mW
Operating 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
VIN
(Note 2)
5.5
40.0
V
Ground Current
IG
ILOAD = 350mA
2.5
4.5
mA
Shutdown Supply Current
ISHDN
VEN
≤ 0.3V
12
40
µA
Guaranteed Output Current
IOUT
RSENSE = 0.55Ω
350
mA
Output Current Accuracy
35mA < IOUT < 350mA, not including
RSENSE tolerance
3%
IOUT = 350mA, 12V < VIN < 40V
0.4
1.2
Dropout Voltage (Note 3)
ΔVDO
IOUT = 350mA, 6.5V < VIN < 12V
0.5
1.5
V
Current rising, DIM rising to 4V
17
Output Current Slew Rate
(External PWM Signal at DIM)
Current falling, DIM falling to 0.6V
17
mA/µs
Short-Circuit Current
VOUT = 0V
600
mA
ENABLE INPUT
EN Input Current
IEN
100
nA
EN Input-Voltage High
VIH
2.8
V
EN Input-Voltage Low
VIL
0.6
V
Enable Turn–On Time
tON
EN rising edge to 90% of OUT
250
µs
CURRENT SENSE (Note 4)
Regulated RSENSE Voltage
VRSENSE
VSENSE = VCS+ - VCS-
192
198
204
mV
Input Current (CS+)
VCS+ = 220mV
+14
µA
Input Current (CS-)
VCS+ = 220mV
-75
µA
INTERNAL RAMP GENERATOR
Internal Ramp Frequency
fRAMP
180
200
220
Hz
External Sync Frequency Range
fDIM
80
2000
Hz
External Sync Voltage Low
0.4
V
External Sync Voltage High
2.8
V
EXTERNAL PWM DIMMING INPUT
DIM Input Current
1µA
Turn-On Time
tON
After DIM rising to 4V (Note 5)
28
52
µs
Turn-Off Time
tOFF
After DIM falling to 0.6V (Note 5)
19
38
µs


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