MAX16814_15 Datasheet, PDF (2/25 Pages) Maxim Integrated Products – Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller

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 (VIN + 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
VCC to SGND........... -0.3V to the lower of (VIN + 0.3V) and +6V
DRV, FLT, DIM, RSDT, OVP to SGND......................-0.3V to +6V
CS, RT, COMP, SETI to SGND.................. -0.3V to (VCC + 0.3V)
NDRV to PGND........................................-0.3V to (VDRV + 0.3V)
NDRV Peak Current (< 100ns).............................................. Q3A
NDRV Continuous Current............................................. Q100mA
OUT_ Continuous Current.............................................. Q175mA
VCC Short-Circuit Duration.........................................Continuous
Continuous Power Dissipation (TA = +70NC) (Note 1)
20-Pin TQFN (derate 25.6mW/NC above +70NC)........2051mW
20-Pin Side-Wettable QFND
(derate 26.5mW/NC above +70NC).............................2050mW
26-Pin TSSOP (derate 26.5mW/NC above +70NC)......2122mW
Operating Temperature Range
MAX16814A_ _............................................... -40NC to +125NC
MAX16814BE_ _.............................................. -40NC to +85NC
MAX16814U_ _and MAX16814BU_ _.................0NC to +85NC
Junction Temperature......................................................+150NC
Storage Temperature Range............................. -65NC to +150NC
Lead Temperature (soldering, 10s).................................+300NC
Soldering Temperature (reflow).......................................+260NC
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 (BJA)......... +39NC/W
Junction-to-Case Thermal Resistance (BJC)................ +6NC/W
20 TSSOP
Junction-to-Ambient Thermal Resistance (BJA)...... +37.7NC/W
Junction-to-Case Thermal Resistance (BJC)............. +2.0NC/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
(VIN = VEN = 12V, RRT = 12.25kI, RSETI = 15kI, CVCC = 1FF, VCC = VDRV, NDRV = COMP = OUT_ = unconnected, VRSDT = VDIM
= VCC, VOVP = VCS = VLEDGND = VPGND = VSGND = 0V, TA = TJ = -40NC to +125NC for MAX16814A_ _, TA = -40NC to +85NC for
MAX16814BE_ _, and TA = TJ = 0NC to +85NC for MAX16814U_ _ and MAX16814BU_ _, unless otherwise noted. Typical values are at
TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Operating Voltage Range
Active Supply Current
VIN
MAX16814A_ _ and MAX16814U_ _
IIN
MAX16814B_ _ _ only
4.75
40
V
2.5
5
mA
2.75 5.5
Standby Supply Current
IN Undervoltage Lockout
IN UVLO Hysteresis
VEN = 0V
VIN rising
15
40
μA
3.975 4.3 4.625
V
170
mV
VCC REGULATOR
Regulator Output Voltage
Dropout Voltage
Short-Circuit Current Limit
VCC
6.5V < VIN < 10V, 1mA < ILOAD < 50mA
10V < VIN < 40V, 1mA < ILOAD < 10mA
4.75 5.0 5.25
V
VIN - VCC, VIN = 4.75V, ILOAD = 50mA
200 500
mV
VCC shorted to SGND
100
mA
VCC Undervoltage Lockout
Threshold
VCC rising
4
V
VCC UVLO Hysteresis
RT OSCILLATOR
100
mV
Switching Frequency Range
fSW
200
2000 kHz
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