Electrical Characteristics
VCC = 14V, TA = -40°C~+125°C, unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ. Max.
Units
Zero-Current Detect Section
VZCD
Input Voltage Threshold(4)
1.35
0.05
5.5
0
1.50
0.10
6.2
1.65
0.15
7.5
1.00
1.0
-4
V
V
HYZCD Detect Hysteresis(4)
VCLAMPH Input High Clamp Voltage
VCLAMPL Input Low Clamp Voltage
IZCD,BS Input Bias Current
IZCD,SR Source Current Capability(4)
IZCD,SK Sink Current Capability(4)
IDET=3mA
V
IDET= -3mA
VZCD=1V~5V
TA=25°C
0.65
-0.1
V
-1.0
µA
mA
mA
TA=25°C
10
Maximum Delay From ZCD to Output
Turn-On(4)
dV/dt=-1V/100ns,
from 5V to 0V
tZCD,D
100
9.2
200
ns
Output Section
VOH
VOL
Output Voltage High
IO=-100mA, TA=25°C
IO=200mA, TA=25°C
CIN=1nF
11.0
1.0
50
12.8
2.5
V
V
Output Voltage Low
Rising Time(4)
Falling Time(4)
tRISE
tFALL
100
100
14.5
1
ns
ns
V
CIN=1nF
50
VO,MAX Maximum Output Voltage
VCC=20V, IO=100µA
VCC=5V, IO=100µA
11.5
13.0
VO,UVLO Output Voltage with UVLO Activated
V
Restart / Maximum Switching Frequency Limit Section
tRST
fMAX
Restart Timer Delay
Maximum Switching Frequency(4)
50
150
300
300
350
µs
250
kHz
RDY Pin
IRDY,SK Output Sink Current
VRDY,SAT Output Saturation Voltage
IRDY,LK Output Leakage Current
Soft-Start Timer Section
1
2
4
500
1
mA
mV
µA
IRDY,SK=2mA
320
Output High Impedance
tSS
UVLO Section
Internal Soft-Soft(4)
3
5
7
ms
VRDY
Output Ready Voltage
2.166 2.240 2.314
0.189
V
V
HYRDY Output Ready Hysteresis
Protections
VOVP
OVP Threshold Voltage
TA=25°C
TA=25°C
2.620 2.675 2.730
0.120 0.175 0.230
V
V
HYOVP OVP Hysteresis
VEN
HYEN
TSD
Enable Threshold Voltage
0.40
0.050
125
0.45
0.10
140
60
0.50
0.15
155
V
Enable Hysteresis
V
Thermal Shutdown Temperature(4)
Hysteresis Temperature of TSD(4)
°C
°C
THYS
Note:
4. These parameters, although guaranteed by design, are not production tested.
© 2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN7930C • Rev. 1.0.0
6
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
