FS6X1220R Datasheet, PDF (5/16 Pages) Fairchild Semiconductor – Fairchild Power Switch (FPS)

FS6X1220R
Electrical Characteristics (Continued)
(Ta=25°C unless otherwise specified)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
UVLO SECTION
Start Threshold Voltage
VSTART VFB = GND
14 15 16
V
Stop Threshold Voltage
VSTOP VFB = GND
8
9
10
V
OSCILLATOR SECTION
Initial Frequency
FOSC
-
270 300 330 kHz
Voltage Stability
FSTABLE 12V ≤ VCC ≤ 23V
0
1
3
%
Temperature Stability (1)
∆FOSC -25°C ≤ Ta ≤ 85°C
0
±5 ±10
%
Maximum Duty Cycle
DMAX
-
72 80 88
%
Minimum Duty Cycle
DMIN
-
-
-
0
%
FEEDBACK SECTION
Feedback Source Current
IFB VFB = GND
0.7 0.9 1.1 mA
Shutdown Feedback Voltage
VSD VFB ≥ 6.9V
6.9 7.5 8.1
V
Shutdown Delay Current
IDELAY VFB = 5V
4.0 5.0 6.0 µA
LINE SENSE SECTION
Line UVLO Threshold Voltage
VLU
-
2.4 2.55 2.7
V
Sleep On/Off Threshold Voltage
VSL
-
1.5 1.8 2.1
V
CURRENT LIMIT(SELF-PROTECTION)SECTION
Peak Current Limit (2)
IOVER
-
2.82 3.2 3.58 A
PROTECTION SECTION
Thermal Shutdown Temp (1)
TSD
-
140 160 -
°C
Over Voltage Protection
VOVP
Vcc≥6.9V
23 25 27
V
TOTAL DEVICE SECTION
Start Up Current
ISTART VFB = GND, VCC = 14V
-
60 120 uA
Sleep Mode Current
ISLEEP VUVLO = 1V, VCC = 16V - 300 500 uA
IOP VFB = GND, VCC = 16V
Operating Supply Current
IOP(MIN) VFB = GND, VCC = 12V
-
10 15
mA
IOP(MAX) VFB = GND, VCC = 20V
Note:
1. These parameters, although guaranteed at the design, are not tested in mass production.
2. These parameter indicates inductor current.
5