LNK520GN Power Integrations, LNK520GN Datasheet - Page 2

• Manufacturer Part Number: LNK520GN
• Description: IC SWIT OCP CV/CC HV 8SMD
• Manufacturer: Power Integrations
• Series: LinkSwitch®r

Specifications of LNK520GN

• Output Isolation: Isolated
• Frequency Range: 24 ~ 49.5kHz
• Voltage - Output: 700V
• Power (watts): 5.50W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-SMD Gull Wing, 7 Leads
• Output Voltage: 5.6 V
• Input / Supply Voltage (max): 265 VAC
• Input / Supply Voltage (min): 85 VAC
• Duty Cycle (max): 80 %
• Switching Frequency: 42 KHz
• Supply Current: 0.75 mA
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• For Use With: 596-1006 - KIT DESIGN ACCELERATOR ADAPTER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. Block Diagram.
Pin Functional Description
DRAIN (D) Pin:
Power MOSFET drain connection. Provides internal operating
current for start-up. Internal current limit sense point for drain
current.
CONTROL (C) Pin:
Error amplifier and feedback current input pin for duty cycle
and current limit control. Internal shunt regulator connection
to provide internal bias current during normal operation. It is
also used as the connection point for the supply bypass and
auto-restart/compensation capacitor.
SOURCE (S) Pin:
Output MOSFET source connection for high voltage power
return. Primary side control circuit common and reference
point.
2
CONTROL
LNK520
E
2/05
I DCS
R E
Z C
I
SHUNT REGULATOR/
FB
ERROR AMPLIFIER
OSCILLATOR
CLOCK
V C
D MAX
SAW
+
-
5.6 V
COMPARATOR
5.6 V
4.7 V
PW M
+
-
AUTO-RESTART
SHUTDOWN/
+
-
FREQUENCY
OPERATION
LOW
HYSTERETIC
SHUTDOWN
THERMAL
0
1
Figure 3. Pin Configuration.
INTERNAL
SUPPLY
÷ 8
S
R
Q
G Package (SMD-8B)
S
S
S
S
P Package (DIP-8B)
2
3
4
1
LNK520
CURRENT
CURRENT LIMIT
ADJUST
COMPARATOR
BLANKING
LIMIT
LEADING
EDGE
EDGE
8
5
7
-
+
C
D
S
SOURCE
PI-2777-032503
PI-3790-121503
DRAIN