NCP1379DR2G ON Semiconductor, NCP1379DR2G Datasheet - Page 21

• Manufacturer Part Number: NCP1379DR2G
• Description: IC CTLR QUASI CURRENT MODE 8SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1379DR2G

• Output Isolation: Isolated
• Voltage - Input: 9 ~ 28 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Duty Cycle (max): 6.7 %
• Mounting Style: SMD/SMT
• Switching Frequency: 65 KHz
• Operating Supply Voltage: 8.3 V to 12.3 V
• Supply Current: 1.7 mA
• Maximum Operating Temperature: + 125 C
• Fall Time: 25 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 40 ns
• Synchronous Pin: No
• Topology: Quasi-Resonant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

brown−out resistors.
controller must start switching (V
voltage for shutdown (V
equation to calculate R
V
I
We select:
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
BO
ORDERING INFORMATION
Specifications Brochure, BRD8011/D.
Figure 37. Operating Chronograms in Case of Overvoltage with NCP1379 Supplied by an Auxiliary Power Supply
BO
NCP1379DR2G
The following equations show how to calculate the
First of all, select the bulk voltage value at which the
+
R
= 10 mA
bol
= 0.8 V
10x10
+
0.8 ( 120 * 60 )
V
V
−6
BO
bulk(on)
I
BO
( 120 * 0.8 )
V
V
bulk(on)
bulk(on)
= 120 V,
Device
bou
* V
bulk(off)
* V
+ 40.3 kW
and R
bulk(off)
BO
V
bulk(off)
). Then use the following
bol
.
bulk(on)
= 60 V
) and the bulk
DESIGN EXAMPLE
(eq. 11)
http://onsemi.com
21
Package Type
(Pb free)
SOIC−8
R
+
bou
40.3x10
+
R
bol
R
3
R
0.8
bol
( 120 * 0.8 )
V
bou
bulk(on)
+
V
+
V
BO
BO
R
I
BO
bol
* V
V
V
+ 6 MW
bulk(on)
V
bulk(on)
BO
bulk(on)
V
2500 / Tape & Reel
BO
* V
* V
Shipping
* V
bulk(off)
BO
BO
†
(eq. 10)
(eq. 12)
(eq. 9)