MAX16838_14 Datasheet, PDF (3/21 Pages) Maxim Integrated Products – Integrated, 2-Channel, High-Brightness LED Driver

MAX16838
Integrated, 2-Channel, High-Brightness LED Driver
with High-Voltage Boost and SEPIC Controller
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VEN = 12V, RRT = 12.2kI, RISET = 15kI, CVCC = 1FF, VCC = VDRV = VCFB, DRAIN, COMP, OUT_, FLT = unconnected, VOV
= V_CS = V_LEDGND = V_DIM = V_PGND = V_SGND = 0V, V_GATE = V_NDRV, T_A = T_J = -40NC to +125NC, unless otherwise noted. Typical
values are at T_A = 25NC.) (Note 2)
PARAMETER
RT OSCILLATOR
Switching Frequency Range
Duty Cycle
Oscillator Frequency Accuracy
Synchronization Logic-High
Synchronization Logic-Low
Logic-Level Before SYNC
Capacitor
Synchronization Pulse Width
SYMBOL
CONDITIONS
fSW
D_MAX
fSW = 200kHz
fSW = 2000kHz
f_SW = 200kHz to 2MHz
V_RT rising
VRT falling
SYNC Frequency Range
f_SYNC
PWM COMPARATOR
Leading-Edge Blanking
Propagation Delay to NDRV
SLOPE COMPENSATION
Slope Compensation Peak
Voltage per Cycle
CS LIMIT COMPARATOR
CS Threshold Voltage
CS Limit Comparator Propagation
Delay to NDRV
CS Input Current
ERROR AMPLIFIER
OUT_ Regulation Voltage
Transconductance
No-Load Gain
COMP Sink Current
COMP Source Current
MOSFET DRIVER
NDRV On-Resistance
Peak Sink Current
Peak Source Current
POWER MOSFET
Power Switch On-Resistance
Switch Leakage Current
Switch Gate Charge
VCS_MAX
I_CS
Gm
A
ISINK
ISOURCE
Including leading-edge blanking time
Voltage ramp added to CS
VCOMP = 3V
10mV overdrive (including leading-edge
blanking time)
0 P VCS P 0.35V
V_DIM = 5V
(Note 4)
VDIM = VOUT_ = 5V, VCOMP = 3V
VDIM = 5V, VOUT_ = VCOMP = 0V
I_SINK = 100mA, V_IN > 5.5V
ISOURCE = 100mA, VIN > 5.5V
VNDRV = 5V
VNDRV = 0V
I_SWITCH = 0.5A, V_GS = 5V
VDRAIN = 40V, VGATE = 0V
VDRAIN = 40V, VGS = 4.5V
MIN TYP MAX UNITS
200
2000 kHz
87
90
95
%
83
85
91
%
-7.5
+7.5
%
1.8
3.6
V
2.5
V
3.1
3.8
V
50
1.1 x
f_SW
ns
1.5 x
f_SW
Hz
66
ns
100
ns
0.12
V
285 300 315
mV
100
ns
-1.3
+0.5
FA
0.9
1
1.1
V
340 600 880
FS
50
dB
400 800
FA
400 800
FA
1.5
4
I
1.5
4
I
0.8
A
0.8
A
0.15 0.35
I
0.003 1.2
FA
3.1
nC
Maxim Integrated
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