MAX16826ATJ(2009) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX16826ATJ
(Rev.:2009)
(Rev.:2009)
Maxim Integrated
MAX16826ATJ Datasheet PDF : 26 Pages
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Programmable, Four-String HB LED Driver with
Output-Voltage Optimization and Fault Detection
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 12V, R19 = 2kΩ, C33 = 2200pF, R17 = 1.27kΩ, CDL_ = 0.01µF, TJ = -40°C to +125°C, unless otherwise noted. Typical values
are at TA = +25°C.) (Note 1)
PARAMETER
ERROR AMPLIFIER (FB, COMP)
Open-Loop Gain
Unity-Gain Bandwidth
Phase Margin
Error-Amplifier Output Current
COMP Clamp Voltage
COMP Short-Circuit Current
PWM CURRENT LIMIT (CS)
SYMBOL
AOL
BW
PM
ICOMP
VCOMP
ICOMP_SC
CONDITIONS
Sourcing, VCOMP = 3V
Sinking, VCOMP = 2V
VFB = 0
MIN TYP MAX UNITS
80
2
65
1.9
0.9
3.25
12
dB
MHz
Degrees
mA
4.5
V
mA
Cycle-by-Cycle Current-Limit
Threshold
VCL
VDL = 0
187 200 217
mV
Cycle-by-Cycle Current-Limit
Propagation Time To DL
Gross Current-Limit Threshold
Gross Current-Limit Propagation
Time To DL
tPROP, CL
VGCL
tPROP,GCL
10mV overdrive
VCSS = 0
10mV overdrive
80
ns
250 270 280
mV
80
ns
Input Bias Current
PWM OSCILLATOR (RTCT)
0 < VCS < 5.5V
-100
0
+100
nA
RTCT Voltage Ramp (Peak to
Peak)
VRAMP
5.5V < VIN < 24V
1.60 1.65 1.80
V
RTCT Voltage Ramp Valley
VRAMP_VALLEY
Discharge Current
Frequency Range
IDIS
fOSC
SYNCHRONIZATION (SYNC/ENABLE)
Input Rise/Fall Time
Input Frequency Range
Input High Voltage
Input Low Voltage
Input Minimum Pulse Width
Input Bias Current
Delay to Shutdown
LED DIMMING (DIM1–DIM4)
Input High Voltage
VDIM,MAX
Input Low Voltage
VDIM,MIN
Minimum Dimming Frequency
fDIM
Input Bias Current
IDIM
5.5V < VIN < 24V
VRTCT = 2V
5.5V < VIN < 24V
0 < VSYNC < 5.5V
VSYNC = 0V
tON = 2µs (Note 3)
0 < VDIM_ < 5.5V
1.11 1.20 1.27
V
7.8
8.4
9.1
mA
100
1000 kHz
200
ns
100
1000 kHz
1.5
V
0.5
V
200
ns
-100
0
+100
nA
13
32
65
µs
1.5
45
-100
V
0.5
V
Hz
0
+100
nA
4 _______________________________________________________________________________________
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