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KA3S0680RFB Datasheet(PDF) 4 Page - Fairchild Semiconductor

No. de pieza KA3S0680RFB
Descripción Electrónicos  Fairchild Power Switch(FPS)
Download  12 Pages
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Fabricante Electrónico  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA3S0680RFB Datasheet(HTML) 4 Page - Fairchild Semiconductor

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KA3S0680RB/KA3S0680RFB
4
Electrical Charcteristics (SFET part) (Continued)
(Ta = 25
°C unless otherwise specified)
Note:
1. These parameters, although guaranteed, are not 100% tested in production
2. These parameters, although guaranteed, are tested in EDS(water test) process
3.The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function.
Characteristic
Symbol
Test condition
Min.
Typ.
Max.
Unit
UVLO SECTION
Start threshold voltage
VSTART
-14
15
16
V
Stop operating voltage
VSTOP
After turn on
9
10
11
V
OSCILLATOR SECTION
Initial accuracy
FOSC
Ta = 25
°C18
20
22
kHz
Frequency change with temperature (2)
∆F/∆T
−25°C ≤ Ta ≤ +85°C-
±5
±10
%
Maximum duty cycle
DMAX
-92
95
98
%
FEEDBACK SECTION
Feedback source current
IFB
Ta = 25
°C, Vfb = GND
0.7
0.9
1.1
mA
Shutdown Feedback voltage
VSD
-
6.9
7.5
8.1
V
Shutdown delay current
Idelay
Ta = 25
°C, 5V ≤ Vfb ≤VSD
1.4
1.8
2.2
µA
SYNC. & SOFT START SECTION
Soft start voltage
VSS
VFB = 2V
4.7
5.0
5.3
V
Soft start current
ISS
Sync & S/S = GND
0.8
1.0
1.2
mA
Sync threshold voltage(3)
VSYTH
Vfb = 5V
6.0
6.4
6.8
V
REFERENCE SECTION
Output voltage (1)
Vref
Ta = 25
°C
4.80
5.00
5.20
V
Temperature Stability (1)(2)
Vref/
∆T
−25°C ≤ Ta ≤ +85°C-
0.3
0.6
mV/
°C
CURRENT LIMIT (SELF-PROTECTION) SECTION
Peak Current Limit
IOVER
Max. inductor current
3.52
4.00
4.48
A
PROTECTION SECTION
Thermal shutdown temperature (Tj) (1)
TSD
-
140
160
-
°C
Over voltage protection voltage
VOVP
-23
25
28
V
TOTAL DEVICE SECTION
Start Up current
ISTART
VCC = 14V
0.1
0.3
0.55
mA
Operating supply current
(control part only)
IOP
Ta = 25
°C
6
12
18
mA
VCC zener voltage
VZ
ICC = 20mA
30
32.5
35
V


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