MAX16818_09 Datasheet, PDF (2/25 Pages) Maxim Integrated Products – 1.5MHz, 30A High-Efficiency, LED Driver with Rapid LED Current Pulsing

1.5MHz, 30A High-Efficiency, LED Driver
with Rapid LED Current 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 [(V_BST - V_{LX_}) + 0.3V]
DL to PGND................................................-0.3V to (V_DD + 0.3V)
V_CC to SGND............................................................-0.3V to +6V
V_CC, V_DD to PGND ...................................................-0.3V to +6V
SGND to PGND .....................................................-0.3V to +0.3V
All Other Pins to SGND...............................-0.3V to (V_CC + 0.3V)
Continuous Power Dissipation (T_A = +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 “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.
ELECTRICAL CHARACTERISTICS
(V_CC = 5V, V_DD = V_CC, T_A = T_J = T_MIN to T_MAX, unless otherwise noted. Typical specifications are at T_A = +25°C.) (Note 1)
PARAMETER
SYSTEM SPECIFICATIONS
SYMBOL
CONDITIONS
Input Voltage Range
V_IN
Quiescent Supply Current
I_Q
LED CURRENT REGULATOR
SENSE+ to SENSE- Accuracy
(Note 2)
Soft-Start Time
t_SS
STARTUP/INTERNAL REGULATOR
V_CC Undervoltage Lockout
V_CC Undervoltage Hysteresis
V_CC Output Voltage
MOSFET DRIVERS
Output Driver Impedance
Output Driver Source/Sink Current
Nonoverlap Time
OSCILLATOR
Switching Frequency Range
Switching Frequency
Switching Frequency
Switching Frequency
UVLO
R_ON
I_DH,I_DL
t_NO
f_SW
Switching Frequency Accuracy
Short IN and V_CC together for 5V input
operation
EN = V_CC or SGND, not switching
No load, V_IN = 4.75V to 5.5V, f_SW = 500kHz
No load, V_IN = 7V to 28V, f_SW = 500kHz
V_CC rising
V_IN = 7V to 28V, I_SOURCE = 0 to 60mA
Low or high output, I_SOURCE/SINK = 20mA
C_DH/DL = 5nF
R_T = 500kΩ
R_T = 120kΩ
R_T = 39.9kΩ
120kΩ ≤ R_T ≤ 500kΩ
40kΩ ≤ R_T ≤ 120kΩ
MIN
7
4.75
0.594
0.594
4.1
4.85
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 UNITS
28
V
5.50
5.5
mA
0.606
0.606
V
Clock
Cycles
4.5
V
mV
5.30
V
3.0
Ω
A
ns
1500 kHz
129
547 kHz
1725
+5
%
+8
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