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MAX16814
Integrated, 4-Channel, High-Brightness LED
Driver with High-Voltage DC-DC Controller
ABSOLUTE MAXIMUM RATINGS
IN to SGND............................................................-0.3V to +45V
EN to SGND ...............................................-0.3V to (V IN + 0.3V)
PGND to SGND ....................................................-0.3V to +0.3V
LEDGND to SGND ...............................................-0.3V to +0.3V
OUT_ to LEDGND .................................................-0.3V to +45V
V CC to SGND .......... -0.3V to the lower of (V IN + 0.3V) and +6V
DRV, FLT , DIM, RSDT, OVP to SGND.....................-0.3V to +6V
CS, RT, COMP, SETI to SGND ................. -0.3V to (V CC + 0.3V)
NDRV to PGND .......................................-0.3V to (V DRV + 0.3V)
NDRV Peak Current (< 100ns) ............................................. Q 3A
NDRV Continuous Current ............................................ Q 100mA
OUT_ Continuous Current ............................................. Q 175mA
V CC Short-Circuit Duration ........................................Continuous
Continuous Power Dissipation (T A = +70 N C) (Note 1)
20-Pin TQFN (derate 25.6mW/ N C above +70 N C) .......2051mW
20-Pin Side-Wettable QFND
(derate 26.5mW/ N C above +70 N C) ............................2050mW
26-Pin TSSOP (derate 26.5mW/ N C above +70 N C) .....2122mW
Operating Temperature Range
MAX16814A_ _.............................................. -40 N C to +125 N C
MAX16814BE_ _ ............................................. -40 N C to +85 N C
MAX16814U_ _and MAX16814BU_ _ ................0 N C to +85 N C
Junction Temperature .....................................................+150 N C
Storage Temperature Range............................ -65 N C to +150 N C
Lead Temperature (soldering, 10s) ................................+300 N C
Soldering Temperature (reflow) ......................................+260 N 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.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
20 TQFN/QFND
Junction-to-Ambient Thermal Resistance ( B JA ) ........ +39 N C/W
Junction-to-Case Thermal Resistance ( B JC )............... +6 N C/W
20 TSSOP
Junction-to-Ambient Thermal Resistance ( B JA ) ..... +37.7 N C/W
Junction-to-Case Thermal Resistance ( B JC )............ +2.0 N C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to http://www.maximintegrated.com/thermal-tutorial .
ELECTRICAL CHARACTERISTICS
(V IN = V EN = 12V, R RT = 12.25k I , R SETI = 15k I , C VCC = 1 F F, V CC = V DRV , NDRV = COMP = OUT_ = unconnected, V RSDT = V DIM
= V CC , V OVP = V CS = V LEDGND = V PGND = V SGND = 0V, T A = T J = -40 N C to +125 N C for MAX16814A_ _, T A = -40 N C to +85 N C for
MAX16814BE_ _, and T A = T J = 0 N C to +85 N C for MAX16814U_ _ and MAX16814BU_ _, unless otherwise noted. Typical values are at
T A = +25 N C.) (Note 2)
PARAMETER
Operating Voltage Range
Active Supply Current
Standby Supply Current
IN Undervoltage Lockout
SYMBOL
V IN
I IN
CONDITIONS
MAX16814A_ _ and MAX16814U_ _
MAX16814B_ _ _ only
V EN = 0V
V IN rising
MIN
4.75
3.975
TYP
2.5
2.75
15
4.3
MAX
40
5
5.5
40
4.625
UNITS
V
mA
μA
V
IN UVLO Hysteresis
V CC REGULATOR
170
mV
Regulator Output Voltage
Dropout Voltage
V CC
6.5V < V IN < 10V, 1mA < I LOAD < 50mA
10V < V IN < 40V, 1mA < I LOAD < 10mA
V IN - V CC , V IN = 4.75V, I LOAD = 50mA
4.75
5.0
200
5.25
500
V
mV
Short-Circuit Current Limit
V CC Undervoltage Lockout
Threshold
V CC UVLO Hysteresis
V CC shorted to SGND
V CC rising
100
4
100
mA
V
mV
RT OSCILLATOR
Switching Frequency Range
f SW
200
2000
kHz
2
Maxim Integrated
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