NCP1207BDR2G ON Semiconductor, NCP1207BDR2G Datasheet - Page 2

• Manufacturer Part Number: NCP1207BDR2G
• Description: IC CTRLR PWM CM OVP OCP HV 8SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1207BDR2G

• Output Isolation: Isolated
• Voltage - Input: 10.6 ~ 20 V
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width) 7 leads
• Number Of Outputs: 1
• Duty Cycle (max): 28.6 %
• Output Current: 500 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 75 KHz
• Operating Supply Voltage: 20 V
• Maximum Operating Temperature: + 150 C
• Fall Time: 20 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 40 ns
• Synchronous Pin: No
• Topology: Flyback
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN FUNCTION DESCRIPTION
Pin
1
2
3
4
5
6
7
8
Universal Network
Pin Name
Demag
GND
V
Drv
CS
NC
HV
FB
CC
Core reset detection and OVP
Sets the peak current setpoint
Current sense input and skip
cycle level selection
The IC ground
Driving pulses
Supplies the IC
High--voltage pin
*Please refer to the application information section
Function
--
+
OVP and
Demag
Figure 1. Typical Application
1
2
3
4
The auxiliary FLYBACK signal ensures discontinuous operation and offers a fixed
overvoltage detection level of 7.2 V.
By connecting an Optocoupler to this pin, the peak current setpoint is adjusted
accordingly to the output power demand. By bringing this pin below the internal
skip level, device shuts off.
This pin senses the primary current and routes it to the internal comparator via an
L.E.B. By inserting a resistor in series with the pin, you control the level at which
the skip operation takes place.
The driver’s output to an external MOSFET.
This pin is connected to an external bulk capacitor of typically 10 mF.
This unconnected pin ensures adequate creepage distance. (No pin on
NCP1207B)
Connected to the high--voltage rail, this pin injects a constant current into the V
bulk capacitor.
NCP1207A/B
http://onsemi.com
2
8
7
6
5
*
+
Description
--
+
V
GND
out
CC