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NCP1337 Datasheet(PDF) 6 Page - ON Semiconductor

Part No. NCP1337
Description  PWM Current−Mode Controller for Free Running Quasi−Resonant Operation
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1337 Datasheet(HTML) 6 Page - ON Semiconductor

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NCP1337
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6
ELECTRICAL CHARACTERISTICS (continued) (For typical values TJ = 25°C, for min/max values TJ = 0°C to +125°C,
Max TJ = 150°C, VCC = 11 V, unless otherwise noted.)
Characteristic
Pin
Symbol
Min
Typ
Max
Unit
FEEDBACK SECTION
FB Current under which FAULT is Detected
2
IFBopen
40
mA
FB Current for which Internal Setpoint is 100%
2
IFB100%
50
mA
FB Current above which DRV Pulses are Stopped
2
IFBrippleIN
220
mA
FB Current under which DRV Pulses are Reauthorized after having
reached IFBrippleIN
2
IFBrippleOUT
205
mA
FB Current above which FB Pin Voltage is not Regulated anymore
2
IFBregMax
500
mA
FB Pin Voltage when IFBopen < IFB < IFBregMax
2
VFB
2.8
3.0
3.2
V
Duration before Entering Protection Mode after FAULT Detection
TFAULT
80
ms
Internal Soft−Start Duration (Up to VCSLimit)
TSS
4.0
ms
Internal Soft−Skip Duration (Up to VCSLimit)
TSSkip
300
ms
BROWN−OUT AND LATCH SECTION
Brown−Out Detection Level
1
VBO
460
500
540
mV
Current Flowing out of Pin 1 when Brown−Out Comparator has Toggled
1
IBO
10
mA
Vpin1 Threshold that Disables the Output
1
VDISABLE
2.8
3.0
3.3
V
Vpin1 Threshold that Activates the Permanent Latch
1
VLATCH
4.75
5.0
5.25
V
DEMAGNETIZATION DETECTION BLOCK
Current Threshold for Demagnetization Detection
5
ISOXYth
210
mA
Max Voltage on DRV Pin During OFF Time after TBLANK
(when Sinking 15 mA)
5
VDRVlowMAX
1.5
V
Min Voltage on DRV Pin During OFF Time after TBLANK
(when Sourcing 15 mA)
5
VDRVlowMIN
−0.6
V
Propagation Delay from Demag Detection to Gate ON State
(IGATE Slope of 500 A/s)
5
TDMG
180
220
ns
Blanking Window after Gate OFF State before Detecting
Demagnetization
5
TBLANK
5.5
ms
Timeout on Demag Signal
5
TOUT
8.0
ms
Maximum OFF Time
5
MaxTOFF
35
42
ms
Minimum Switching Period
5
MinPeriod
6.8
7.7
8.5
ms


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