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MAX16841
Controller IC for Dimmable Offline LED Lamps
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V, T A = T J = -40 N C to +12 5 N C, unless otherwise noted. Typical values are at T A = +25 N C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RT Resistance Range
Oscillator Decode Resolution
Dither Frequency Range
Frequency Dither Ramping DAC
Dither Frequency
45kHz to 330kHz
47.5
6
1.875
7
1.5
297.5
k W
Bits
%
Bits
kHz
CURRENT SENSE
CS Input Bias Current
CS Voltage at Current Limit
V CS_LIMIT
V CS = 2V, V COMP = 4V
V CS = 2V, V COMP = 0.7V
-1
60
2.1
0
90
2.2
+1
130
2.3
F A
V
CS Voltage at Current Limit
Soft-Start
10
ms
CS Voltage at Hiccup Current
Limit
CS Hiccup Shutdown
Hiccup Detection Cycles
CS > hiccup
2.6
2.7
1.2
3
2.8
V
s
Times
CS Regulation Voltage
V COMP = 2V, V REFI = 2.35V,
V CS = 0.45V
448
450
462
mV
TRANSCONDUCTANCE AMPLIFIER
Transconductance
COMP Sink Current
COMP Source Current
G m
I SINK
I SOURCE
V COMP = 2.2V, V REFI = 2.35V,
V CS = 0.45V Q 0.05V
V COMP = 2V, V REFI = 2.35V, V CS = 0V
V COMP = 2V, V REFI = 2.35V,
V CS = 0.9V
95
45
45
135
65
65
175
85
85
F S
F A
F A
NDRV
NDRV Operating Range
0
V IN
V
NDRV On-Resistance
NDRV Dead Time
NDRV Rise Time
NDRV Fall Time
I NDRV = 50mA to 100mA
I NDRV = -50mA to -100mA
Rising or falling
NDRV = 1nF, 10% to 90%
NDRV = 1nF, 90% to 10%
2
1.25
5
15
15
5.0
2.5
I
Ns
ns
ns
NDRV Reference Current
Startup only
7.5
8
8.5
F A
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal Hysteresis
T J rising
164
20
N C
N C
Note 2: All parameters are tested at T A = +25 N C only. Limits over temperature are guaranteed by design.
Maxim Integrated
3
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