MAX16841_13 Datasheet, PDF (3/18 Pages) Maxim Integrated Products – Controller IC for Dimmable Offline LED Lamps

MAX16841
Controller IC for Dimmable Offline LED Lamps
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = 12V, T_A = T_J = -40NC to +125NC, unless otherwise noted. Typical values are at T_A = +25NC.) (Note 2)
PARAMETER
RT Resistance Range
Oscillator Decode Resolution
Dither Frequency Range
Frequency Dither Ramping DAC
Dither Frequency
CURRENT SENSE
SYMBOL
CONDITIONS
45kHz to 330kHz
MIN TYP
47.5
6
1.875
7
1.5
CS Input Bias Current
VCS = 2V, VCOMP = 4V
VCS = 2V, VCOMP = 0.7V
-1
0
60
90
CS Voltage at Current Limit
VCS_LIMIT
2.1
2.2
CS Voltage at Current Limit
Soft-Start
10
CS Voltage at Hiccup Current
Limit
2.6
2.7
CS Hiccup Shutdown
CS > hiccup
1.2
Hiccup Detection Cycles
3
CS Regulation Voltage
VCOMP = 2V, VREFI = 2.35V,
VCS = 0.45V
448 450
TRANSCONDUCTANCE AMPLIFIER
Transconductance
Gm
VCOMP = 2.2V, VREFI = 2.35V,
VCS = 0.45V Q0.05V
95
135
COMP Sink Current
ISINK
VCOMP = 2V, VREFI = 2.35V, VCS = 0V
45
65
COMP Source Current
ISOURCE
VCOMP = 2V, VREFI = 2.35V,
VCS = 0.9V
45
65
NDRV
NDRV Operating Range
0
NDRV On-Resistance
NDRV Dead Time
INDRV = 50mA to 100mA
2
INDRV = -50mA to -100mA
1.25
Rising or falling
5
NDRV Rise Time
NDRV = 1nF, 10% to 90%
15
NDRV Fall Time
NDRV = 1nF, 90% to 10%
15
NDRV Reference Current
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal Hysteresis
Startup only
TJ rising
7.5
8
164
20
Note 2: All parameters are tested at T_A = +25NC only. Limits over temperature are guaranteed by design.
MAX
297.5
+1
130
2.3
2.8
462
175
85
85
VIN
5.0
2.5
8.5
UNITS
kW
Bits
%
Bits
kHz
FA
V
ms
V
s
Times
mV
FS
FA
FA
V
I
Ns
ns
ns
FA
NC
NC
Maxim Integrated
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