LNK520
Conditions
SOURCE = 0 V; TJ = -40 to 125 °C
See Figure 14
Parameter
Symbol
Min
Typ
Max
Units
(Unless Otherwise Specified)
SHUTDOWN/AUTO-RESTART
VC = 0 V
-4.5
-2.5
0.68
0.5
-3.25
-1.8
0.75
0.6
-2
CONTROL Pin
Charging Current
IC(CH)
TJ = 25 °C
mA
mA
VC = 5.15 V
-1.0
0.82
0.7
ICD1
ICD2
TJ = 25 °C Output MOSFET Enabled
TJ = 25 °C Output MOSFET Disabled
Control/Supply/
Discharge Current
Auto-Restart
Threshold Voltage
VC(AR)
VC(AR)hyst
DC(AR)
f(AR)
5.6
0.9
8
V
V
Auto-Restart
Hysteresis Voltage
Auto-Restart Duty
Cycle
Short Circuit Applied at
Power Supply Output
%
Hz
Auto-Restart
Frequency
S2 Open
C1 = 0.22 µF (See Figure 14)
300
CIRCUIT PROTECTION
TJ = 25 °C
di/dt = 90 mA/µs
See Note B
Self-Protection
Current Limit
ILIM
228
254
280
mA
TJ = 25 °C
di/dt = 90 mA/µs
See Notes B, C
I2 f
2412
2710
3008
A2Hz
I2 f Coefficient
Current Limit at
Auto-Restart
ILIM(AR)
VC(RESET)
tLEB
IC = ICD1,TJ = 25 °C
165
2.75
300
100
135
70
mA
V
Power Up Reset
Threshold Voltage
1.5
4.0
Leading Edge
Blanking Time
IC = IDCT,TJ = 25 °C
TJ = 25 °C
200
ns
ns
°C
°C
tIL(D)
Current Limit Delay
Thermal Shutdown
Temperature
IC =IDCT
125
Thermal Shutdown
Hysteresis
E
2/05
14
POWERINT [ Power Integrations ]
