NCP1338 查看數據表（PDF） - ON Semiconductor
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NCP1338 Datasheet PDF : 15 Pages
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NCP1338
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
FEEDBACK SECTION
FB Current under which FAULT is Detected
2
IFBopen
−
40
−
FB Current for which Internal Setpoint is 100%
2
IFB100%
−
50
−
FB Current above which DRV Pulses are Stopped
2
IFBrippleIN
−
220
−
FB Current under which DRV Pulses are Reauthorized after having
reached IFBrippleIN
FB Current above which FB Pin Voltage is not Regulated anymore
2
IFBrippleOUT
−
205
−
2
IFBregMax
−
500
−
FB Pin Voltage when IFBopen < IFB < IFBregMax
2
VFB
2.8
3.0
3.2
Duration before Entering Protection Mode after FAULT Detection
−
TFAULT
−
80
−
Internal soft−start Duration (Up to VCSLimit)
−
TSS
−
4.0
−
Internal Soft−Skip Duration (Up to VCSLimit)
−
TSSkip
−
300
−
Unit
mA
mA
mA
mA
mA
V
ms
ms
ms
BROWN−OUT AND LATCH SECTION
Brown−Out Detection Level
1
Current Flowing out of Pin 1 when Brown−Out Comparator has Toggled
1
Vpin1 Threshold that Disables the Output
1
Vpin1 Threshold that Activates the Permanent Latch
1
VBO
IBO
VDISABLE
VLATCH
460
500
540
mV
−
10
−
mA
2.8
3.0
3.3
V
4.75
5.0 5.25
V
DEMAGNETIZATION DETECTION BLOCK
Current Threshold for Demagnetization Detection
Max Voltage on DRV Pin During OFF Time after TBLANK
(when Sinking 15 mA)
Min Voltage on DRV Pin During OFF Time after TBLANK
(when Sourcing 15 mA)
Propagation Delay from Demag Detection to Gate ON State
(IGATE Slope of 500 A/s)
Blanking Window after Gate OFF State before Detecting
Demagnetization
Timeout on Demag Signal
Maximum OFF Time
Minimum Switching Period
5
ISOXYth
−
210
−
mA
5
VDRVlowMAX
−
−
1.5
V
5
VDRVlowMIN
−0.6
−
−
V
5
TDMG
−
180 220
ns
5
TBLANK
−
5.5
−
ms
5
TOUT
−
8.0
−
ms
5
MaxTOFF
−
35
42
ms
5
MinPeriod
6.8
7.7
8.5
ms
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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