NCL30082ADMR2G ON Semiconductor, NCL30082ADMR2G Datasheet - Page 22

• Manufacturer Part Number: NCL30082ADMR2G
• Description: LED Lighting Drivers Dimmable Quasi-Res I-Mode Cntlr
• Manufacturer: ON Semiconductor

Specifications of NCL30082ADMR2G

• Rohs: yes
• Input Voltage: 18 V
• Operating Frequency: 65 kHz
• Maximum Supply Current: 1.2 mA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: Micro-8
• Minimum Operating Temperature: - 40 C

PWM or Linear Dimming Detection
or PWM dimming of the LED light.
varying from V
output current will increase or decrease proportionally to the
voltage applied. For V
delivers the maximum output current.
Note:
•
V
The pin DIM allows implementing either linear dimming
If the power supply designer apply an analog signal
V
V
V
If a PWM voltage with a high state value < V
applied to the DIM pin, the product will still be in
PWM dimming mode, but the reference voltage will be
decreased according to V
dynamic range on the dimming control pin.
CC(reset)
V
V
TF(start)
TF(stop)
OTP(off)
CC(on)
CC(off)
V
V
V
DRV
I
CC
SD
out
DIM(EN)
V
DIM
DIM
to V
V
V
V
controller stops
switching
DIM(EN)
DIM100
SD
DIM
= V
DIM100
< V
. This allows increased
DIM100
OTP(off)
Analog dimming
Figure 53. Thermal Fold−back / OTP Chronograms
to the DIM pin, the
, the power supply
:
Figure 54. Pin DIM Chronograms
4−s Timer
DIM100
100%
http://onsemi.com
0%
is
I
I
out
out
22
the DRV pulses are disabled. Thus, for PWM dimming, a
PWM signal with a low state value < V
state value > V
source. Thus, if the pin is left open, the controller is able to
start.
•
If a voltage lower than V
The DIM pin is pulled up internally by a small current
Thermal Foldback and dimming: if the IC is in a
dimming state and the thermal foldback (TF) is
activated, the output current is further reduced to a
value equal to Dimming*TF.
4−s timer has elapsed
but V
≥ no restart
PWM dimming
SD
DIM100
< V
V
V
DRV pulses restart
TF(stop)
SD
CC
should be applied.
> V
> V
DIM(EN)
TF(stop)
CC(on)
:
and
is applied to the DIM pin,
DIM(EN)
and a high