NCP1236AD100R2G ON Semiconductor, NCP1236AD100R2G Datasheet - Page 24

• Manufacturer Part Number: NCP1236AD100R2G
• Description: IC CTLR CURR MODE 100KHZ 7-SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1236AD100R2G

• Input Voltage: 28V
• No. Of Outputs: 1
• Voltage Regulator Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (20-Jun-2011)
• Base Number: 1236
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Overcurrent protection with Fault timer
supply, the FB loop asks for more power than the controller
can deliver, and the CS setpoint reaches V
event occurs, an internal t
elapsed, DRV pulses are stopped and the controller is either
t
if not, the system starts a new burst cycle.
autorec
When an overcurrent occurs on the output of the power
In autorecovery mode, the controller tries to restart after
. If the fault has gone, the supply resumes operation;
FB
CS
blanking
t
fault
/ 5
LEB
timer is started: once the timer
+
Figure 44. Timer−Based Overcurrent Protection
V
ILIM
+
+
−
−
PWM
ILIMIT
. When this
R
S
Q
http://onsemi.com
DC
DRV
Brown−out
timer
Fault Flag
24
t
MAX
fault
latched off (latched protection, version A), or it enters an
autorecovery mode (version B). The timer is reset when the
CS setpoint goes back below V
The fault timer is also started if the driver signal is reset by
the max duty cycle.
Reset
Protection
Mode
release
timer
t autorec
Autorecovery
ILIM
mode only
protection
before the timer elapses.
Reset DRV