MAX16833_11 Datasheet, PDF (3/22 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
ELECTRICAL CHARACTERISTICS (continued)
(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
SLOPE COMPENSATION
SYMBOL
CONDITIONS
Slope Compensation
Current-Ramp Height
ISLOPE
Ramp peak current added to CS input
per switching cycle
DITHERING RAMP GENERATOR (LFRAMP) (MAX16833/MAX16833C/MAX16833E only)
Charging Current
Discharging Current
Comparator High Trip Threshold
VLFRAMP = 0V
VLFRAMP = 2.2V
Comparator Low Trip Threshold
REFERENCE OUTPUT (REF) (MAX16833B/MAX16833D only)
Reference Output Voltage
ANALOG DIMMING (ICTRL)
VREF
IREF = 0 to 80FA
Input-Bias Current
IBICTRL
LED CURRENT-SENSE AMPLIFIER
VICTRL = 0.62V
ISENSE+ Input-Bias Current
IBISENSE+ VISENSE+ = 65V, VISENSE- = 64.8V
MIN
46
80
80
1.604
0
200
TYP
50
100
100
2
VRT
1.636
35
400
MAX UNITS
54
FA
120
FA
120
FA
V
V
1.669
V
200
nA
700
FA
ISENSE+ Input-Bias Current with
DIM Low
IBISENSE+OFF
VISENSE+ = 48V,
PWMDIM = 0
VISENSE-
=
48V,
200
FA
ISENSE- Input-Bias Current
Voltage Gain
Current-Sense Voltage
Bandwidth
COMP
Transconductance
Open-Loop DC Gain
COMP Input Leakage
COMP Sink Current
COMP Source Current
PWM COMPARATOR
Input Offset Voltage
Leading-Edge Blanking
Propagation Delay to NDRV
CS LIMIT COMPARATOR
Current-Limit Threshold
CS Limit-Comparator
Propagation Delay to NDRV
Leading-Edge Blanking
IBISENSE- VISENSE+ = 65V, VISENSE- = 64.8V
VSENSE
BW
VICTRL = 1.4V
VICTRL = 0.616V
VICTRL = 0.2465V
AVDC - 3dB
2
5
8
FA
6.15
V/V
195
199
203
100
mV
38.4
40
41.4
5
MHz
GMCOMP
AVOTA
ILCOMP
ISINK
ISOURCE
2100 3500 4900
FS
75
dB
-300
+300 nA
100
400
700
FA
100
400
700
FA
VOS-PWM
2
V
50
ns
tON(MIN)
Includes leading-edge blanking time with
10mV overdrive
55
80
110
ns
VCS_LIMIT
406
418
430
mV
tCS_PROP
10mV overdrive (excluding leading-edge
blanking time)
30
ns
50
ns
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