ncp1338 ON Semiconductor, ncp1338 Datasheet - Page 6

• Manufacturer Part Number: ncp1338
• Description: Pwm Current-mode Controller For Free Running Quasi-resonant Operation
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
Max T
FEEDBACK SECTION
BROWN-OUT AND LATCH SECTION
DEMAGNETIZATION DETECTION BLOCK
FB Current under which FAULT is Detected
FB Current for which Internal Setpoint is 100%
FB Current above which DRV Pulses are Stopped
FB Current under which DRV Pulses are Reauthorized after having
FB Current above which FB Pin Voltage is not Regulated anymore
FB Pin Voltage when I
Duration before Entering Protection Mode after FAULT Detection
Internal Soft-Skip Duration (Up to V
Internal Soft-Skip Duration (Up to V
Brown-Out Detection Level
Current Flowing out of Pin 1 when Brown-Out Comparator has Toggled
Vpin1 Threshold that Disables the Output
Vpin1 Threshold that Activates the Permanent Latch
Current Threshold for Demagnetization Detection
Max Voltage on DRV Pin During OFF Time after T
Min Voltage on DRV Pin During OFF Time after T
Propagation Delay from Demag Detection to Gate ON State
Blanking Window after Gate OFF State before Detecting
Timeout on Demag Signal
Maximum OFF Time
Minimum Switching Period
reached I
(when Sinking 15 mA)
(when Sourcing 15 mA)
(I
Demagnetization
GATE
J
= 150°C, V
Slope of 500 A/s)
FBrippleIN
CC
= 11 V, unless otherwise noted.)
FBopen
Characteristic
< I
FB
< I
CSLimit
CSLimit
FBregMax
(continued) (For typical values T
)
)
BLANK
BLANK
http://onsemi.com
NCP1338
6
J
= 25°C, for min/max values T
Pin
2
2
2
2
2
2
-
-
-
1
1
1
1
5
5
5
5
5
5
5
5
V
V
I
FBrippleOUT
MinPeriod
I
I
V
MaxT
DRVlowMAX
DRVlowMIN
Symbol
FBrippleIN
FBregMax
I
I
V
I
T
T
FB100%
T
DISABLE
SOXYth
FBopen
T
T
BLANK
FAULT
V
LATCH
V
T
SSkip
I
DMG
OUT
BO
SS
BO
FB
OFF
4.75
-0.6
Min
460
2.8
2.8
6.8
J
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
= 0°C to +125°C,
Typ
220
205
500
300
500
210
180
3.0
4.0
3.0
5.0
5.5
8.0
7.7
40
50
80
10
35
-
-
Max
5.25
540
220
3.2
3.3
1.5
8.5
42
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit
mV
ms
ms
mA
mA
mA
mA
mA
mA
mA
ms
ns
ms
ms
ms
ms
V
V
V
V
V