NCL30083BDMR2G ON Semiconductor, NCL30083BDMR2G Datasheet - Page 30

• Manufacturer Part Number: NCL30083BDMR2G
• Description: LED Lighting Drivers Step-Dimm Quasi-Res I-Mode Cntlr
• Manufacturer: ON Semiconductor

Specifications of NCL30083BDMR2G

• 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

CS Pin Short Circuit Protection
ground, the Driver will not be able to turn off, leading to
potential damage of the power supply. To avoid this, the
NCL30083 features a circuit to protect the power supply
Fault Management
OFF Mode
it from operating:
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Normally, if the CS pin or the sense resistor is shorted to
The circuit turns off whenever a major condition prevents
Incorrect feeding of the circuit: “UVLO high”. The
UVLO signal becomes high when V
V
OTP
V
OVP2 (additional OVP provided by SD pin)
Output diode short circuit protection: “WOD_SCP
high”
Output / Auxiliary winding Short circuit protection:
“Aux_SCP high”
Die over temperature (TSD)
Brown−Out: “BO_NOK” high
Pin CS short circuited to GND: “CS_short high”
CC(off)
CC
OVP
and remains high until V
CS
V
VIN
V
CS(low)
Figure 70. CS Pin Short Circuit Protection Schematic
CC
−
+
CC
Blanking Time
exceeds V
Adaptative
drops below
CC(on)
http://onsemi.com
BO_NOK
.
UVLO
30
Q_drv
against a short circuit of the CS pin. When the MOSFET is
on, if the CS voltage stays below V
blanking timer has elapsed, the controller shuts down and
will attempt to restart on the next V
voltage decrease through the controller own consumption
(I
short circuit protection, the output / aux. winding short
circuit protection and the OVP2, the controller waits 4
seconds (auto−recovery timer) and then initiates a startup
sequence (V
Latch Mode
protection (WOD_SCP), the OTP and the Aux−SCP in
version A only.
controller is latched. There are hiccups on V
CC1
In this mode, the DRV pulses are stopped. The VCC
For the output diode short circuit protection, the CS pin
This mode is activated by the output diode short−circuit
In this mode, the DRV pulses are stopped and the
The circuit un−latches when V
).
CC
≥ V
R
S
CC(on)
Q
Q
) before re−starting switching.
CC
CS(low)
CC
CS_short
< V
hiccup.
CC(reset)
after the adaptive
CC
.
.