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| MAX16818_15 Datasheet, PDF (2/25 Pages) Maxim Integrated Products – 1.5MHz, 30A High-Efficiency, LED Driver with Rapid LED Current Pulsing | |||
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MAX16818
1.5MHz, 30A High-Efficiency, LED Driver
with Rapid LEDâCurrent Pulsing
Absolute Maximum Ratings
IN to SGND............................................................-0.3V to +30V
BST to SGND.........................................................-0.3V to +35V
BST to LX.................................................................-0.3V to +6V
DH to LX..................................... -0.3V to [(VBST - VLX_) + 0.3V]
DL to PGND.............................................. -0.3V to (VDD + 0.3V)
VCC to SGND...........................................................-0.3V to +6V
VCC, VDD to PGND..................................................-0.3V to +6V
SGND to PGND.....................................................-0.3V to +0.3V
All Other Pins to SGND............................. -0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
28-Pin TQFN (derate 34.5mW/°C above +70°C).......2758mW
Operating Temperature Range
MAX16818ATI+............................................ .-40°C to +125°C
MAX16818ETI+............................................... -40°C to +85°C
Maximum Junction Temperature......................................+150°C
Storage Temperature Range............................. -60°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Stresses beyond those listed under âAbsolute Maximum Ratingsâ 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.
Electrical Characteristics
(VCC = 5V, VDD = VCC, TA = TJ = TMIN to TMAX, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 1)
PARAMETER
SYSTEM SPECIFICATIONS
SYMBOL
Input Voltage Range
VIN
Quiescent Supply Current
IQ
LED CURRENT REGULATOR
SENSE+ to SENSE- Accuracy
(Note 2)
Soft-Start Time
tSS
STARTUP/INTERNAL REGULATOR
VCC Undervoltage Lockout
VCC Undervoltage Hysteresis
VCC Output Voltage
UVLO
MOSFET DRIVERS
Output Driver Impedance
Output Driver Source/Sink Current
Nonoverlap Time
RON
IDH,IDL
tNO
OSCILLATOR
Switching Frequency Range
Switching Frequency
Switching Frequency
fSW
Switching Frequency
Switching Frequency Accuracy
CONDITIONS
MIN
7
Short IN and VCC together for 5V input
operation
4.75
EN = VCC or SGND, not switching
No load, VIN = 4.75V to 5.5V, fSW = 500kHz 0.594
No load, VIN = 7V to 28V, fSW = 500kHz
0.594
VCC rising
4.1
VIN = 7V to 28V, ISOURCE = 0 to 60mA
4.85
Low or high output, ISOURCE/SINK = 20mA
CDH/DL = 5nF
RT = 500kW
RT = 120kW
RT = 39.9kW
120kW ⤠RT ⤠500kW
40kW ⤠RT ⤠120kW
125
121
495
1515
-5
-8
TYP
2.7
0.6
0.6
1024
4.3
200
5.1
1.1
4
35
125
521
1620
MAX
28
5.50
5.5
0.606
0.606
4.5
5.30
3.0
1500
129
547
1725
+5
+8
UNITS
V
mA
V
Clock
Cycles
V
mV
V
W
A
ns
kHz
kHz
%
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