MAX16833_11 Datasheet, PDF (2/22 Pages) Maxim Integrated Products – High-Voltage HB LED Drivers with Integrated High-Side Current Sense

High-Voltage HB LED Drivers with
Integrated High-Side Current Sense
ABSOLUTE MAXIMUM RATINGS
IN to PGND........................................................... -0.3V to +70V
ISENSE+, ISENSE-, DIMOUT to PGND................ -0.3V to +80V
DIMOUT to ISENSE+...............................................-9V to +0.3V
ISENSE- to ISENSE+.............................................-0.6V to +0.3V
PGND to SGND.....................................................-0.3V to +0.3V
VCC to PGND...........................................................-0.3V to +9V
NDRV to PGND......................................... -0.3V to (VCC + 0.3V)
OVP, PWMDIM, COMP, LFRAMP, REF, ICTRL,
RT/SYNC, FLT to SGND....................................-0.3V to +6.0V
CS to PGND..........................................................-0.3V to +6.0V
Continuous Current on IN.................................................100mA
Peak Current on NDRV......................................................... Q3A
Continuous Current on NDRV........................................ Q100mA
Short-Circuit Duration on VCC...................................Continuous
Continuous Power Dissipation (TA = +70NC)
16-Pin TSSOP (derate 26.1mW/NC above +70NC) ......2089mW
Junction-to-Case Thermal Resistance (BJC) (Note 1)
16-Pin TSSOP.............................................................. +3NC/W
Junction-to-Ambient Thermal Resistance (BJA) (Note 1)
16-Pin TSSOP......................................................... +38.3NC/W
Operating Temperature Range ...................... -40NC to +125NC
Junction Temperature......................................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s).................................+300NC
Soldering Temperature (reflow).......................................+260NC
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 www.maxim-ic.com/thermal-tutorial.
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
(VIN = 12V, RRT = 12.4kI, CIN = CVCC = 1µF, CLFRAMP/CREF = 0.1µF, NDRV = COMP = DIMOUT = PWMDIM = FLT = unconnected,
VOVP = VCS = VPGND = VSGND = 0V, VISENSE+ = VISENSE- = 45V, VICTRL = 1.40V, TA = TJ = -40NC to +125NC, unless otherwise
noted. Typical values are at TA = +25NC.) (Note 2)
PARAMETER
SYSTEM SPECIFICATIONS
Operational Supply Voltage
Supply Current
Undervoltage Lockout (UVLO)
UVLO Hysteresis
SYMBOL
CONDITIONS
VIN
IINQ
UVLORIN
UVLOFIN
PWMDIM = 0, no switching
Switching
VIN rising
VIN falling, IVCC = 35mA
MIN TYP MAX UNITS
5
65
V
1.5
2.5
mA
2.5
4
4.2
4.55 4.85
V
4.05
4.3
4.65
250
mV
Startup Delay
tSTART_DELAY During power-up
1024
Clock
Cycles
UVLO Falling Delay
tFALL_DELAY During power-down
3.3
Fs
VCC LDO REGULATOR
Regulator Output Voltage
VCC
0.1mA P IVCC P 50mA, 9V P VIN P 14V
14V P VIN P 65V, IVCC = 10mA
6.75 6.95 7.15
V
Dropout Voltage
VDOVCC IVCC = 50mA, VIN = 5V
0.15 0.35
V
Short-Circuit Current
IMAXVCC VCC = 0V, VIN = 5V
55
100
150
mA
OSCILLATOR (RT/SYNC)
Switching Frequency Range
fSW
100
1000 kHz
Bias Voltage at RT/SYNC
VRT
1
V
Maximum Duty Cycle
DMAX
VCS = 0V; MAX16833/MAX16833B/
MAX16833E only
87.5 88.5 89.5
%
VCS = 0V; MAX16833C/MAX16833D only 93
94
95
Oscillator Frequency Accuracy
-5
+5
%
Synchronization Logic-High Input VIH-SYNC VRT rising
3.8
V
Synchronization Frequency Range fSYNCIN
1.1fSW
1.7fSW
2   _______________________________________________________________________________________