LNK623 Datasheet, PDF (12/18 Pages) Power Integrations, Inc. – Energy-Effi cient, Off-line Switcher with Accurate Primary-side Constant-Voltage (CV) Control

LNK623-626
Parameter
Symbol
Control Functions (cont.)
Minimum Switch
“On”-Time
Feedback Pin
Sampling Delay
DRAIN Supply
Current
t
ON(min)
t
FB
I
S1
I_S2
BYPASS Pin
Charge Current
BYPASS Pin
Voltage
BYPASS Pin
Voltage Hysteresis
BYPASS Pin
Shunt Voltage
Circuit Protection
I
CH1
I
CH2
V
BP
V
BPH
V
SHUNT
Current Limit
I
LIMIT
Leading Edge
Blanking Time
t
LEB
Thermal Shutdown
Temperature
T
SD
Thermal Shutdown
Hysteresis
T
SDH
Conditions
SOURCE = 0 V; T = -40 to 125 °C
J
(Unless Otherwise Specified)
(See Note 3)
(See Figure 19)
FB Voltage > V
FBth
FB Voltage = V -0.1,
FBth
Switch ON-Time = t_ON
(MOSFET Switching at f_OSC)
LNK623/4
LNK625
LNK626
V =0V
BP
LNK623/4
LNK625/6
V =4V
BP
LNK623/4
LNK625/6
LNK623
di/dt
=
50
mA/μs
,
T
J
=
25
°C
LNK624
di/dt
=
60
mA/μs
,
T
J
=
25
°C
LNK625
di/dt
=
80
mA/μs
,
T
J
=
25
°C
LNK626
di/dt
=
110
mA/μs
,
T
J
=
25
°C
T
J
=
25
°C
(See Note 3)
Min
2.35
-5.0
-7.0
-4.0
-5.6
5.65
0.70
6.2
196
233
307
419
170
135
Typ
700
2.55
280
440
480
520
-3.4
-4.5
-2.3
-3.2
6.00
1.00
6.5
210
250
330
450
215
142
60
Max Units
ns
2.75
μs
330
520
μA
560
600
-1.8
-2.0
mA
-1.0
-1.4
6.25
V
1.20
V
6.8
V
225
268
mA
353
482
ns
150
°C
°C
12
Rev. E 09/09
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