MAX16814_15 Datasheet, PDF (3/25 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
Electrical Characteristics (continued)
(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
fSW = 200kHz to 600kHz, MAX16814A_ _
and MAX16814U_ _
85
89
93
Maximum Duty Cycle
fSW = 600kHz to 2000kHz, MAX16814A_ _
and MAX16814U_ _
82
86
90
%
Oscillator Frequency Accuracy
Sync Rising Threshold
fSW = 200kHz to 600kHz, MAX16814B_ _
90
94
98
fSW = 600kHz to 2000kHz, MAX16814B _ _ _ 86
90
94
fSW = 200kHz to 2MHz, MAX16814A_ _
and MAX16814U_ _
-7.5
+7.5
%
fSW = 200kHz to 2MHz, MAX16814B_ _ _
-7
+7
4
V
Minimum Sync Frequency
1.1fSW
Hz
PWM COMPARATOR
PWM Comparator Leading-Edge
Blanking Time
60
ns
PWM to NDRV Propagation Delay
Including leading-edge blanking time
90
ns
SLOPE COMPENSATION
Peak Slope Compensation
Current Ramp Magnitude
CS LIMIT COMPARATOR
Current ramp added to the CS input,
MAX16814A_ _ only
Current ramp added to the CS input,
MAX16814U_ _ and MAX16814B_ _ _
44
49
54
μA x fSW
45
50
55
Current-Limit Threshold
CS Limit Comparator to NDRV
Propagation Delay
ERROR AMPLIFIER
(Note 3)
396 416 437
mV
10mV overdrive, excluding leading-edge
blanking time
10
ns
OUT_ Regulation Voltage
Transconductance
No-Load Gain
g_M
(Note 4)
1
V
340 600 880
μS
75
dB
COMP Sink Current
COMP Source Current
MOSFET DRIVER
VOUT_ = 5V, VCOMP = 2.5V
VOUT_ = 0V, VCOMP = 2.5V
160 375 800
μA
160 375 800
μA
NDRV On-Resistance
Peak Sink Current
Peak Source Current
Rise Time
Fall Time
LED CURRENT SOURCES
ISINK = 100mA (nMOS)
ISOURCE = 100mA (pMOS)
VNDRV = 5V
VNDRV = 0V
CLOAD = 1nF
CLOAD = 1nF
0.9
ω
1.1
2.0
A
2.0
A
6
ns
6
ns
OUT_ Current-Sink Range
Channel-to-Channel Matching
VOUT_ = VREF
IOUT_ = 100mA
IOUT_ = 100mA, all channels on
20
150
mA
±2
%
±1.5
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