LNK626DG-TL Power Integrations, LNK626DG-TL Datasheet - Page 2

• Manufacturer Part Number: LNK626DG-TL
• Description: IC OFFLINE SWIT CV/CC HV 8SOIC
• Manufacturer: Power Integrations
• Series: LinkSwitch®-CVr

Specifications of LNK626DG-TL

• Output Isolation: Isolated
• Frequency Range: 93 ~ 106kHz
• Voltage - Output: 700V
• Power (watts): 17W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width) 7 leads
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2
Pin Functional Description
DRAIN (D) Pin:
This pin is the power MOSFET drain connection. It provides
internal operating current for both start-up and steady-state
operation.
BYPASS/MULTI-FUNCTIONAL Programmable (BP/M) Pin:
This pin has multiple functions:
1. It is the connection point for an external bypass capacitor for
2. It is a mode selection for the cable drop compensation.
FEEDBACK (FB) Pin:
During normal operation, switching of the power MOSFET is
controlled by this pin. This pin senses the AC voltage on the bias
winding. This control input regulates both the output voltage in
CV mode and output current in CC mode based on the Flyback
voltage of the bias winding. The internal inductance correction
circuit uses the forward voltage on the bias winding to sense the
bulk capacitor voltage.
SOURCE (S) Pin:
This pin is internally connected to the output MOSFET source for
high voltage power and control circuit common returns.
Rev. C 09/09
2
the internally generated 6 V supply.
FEEDBACK
SOURCE
BYPASS
(BP/M)
(FB)
(S)
6.5 V
Functional Block Diagram.
LNK632DG
COMPENSATION
V
CONTROLLER
TH
CABLE DROP
CONSTANT
CURRENT
t
SAMPLE-OUT
+
-
D
V
ILIMIT
FB
Q
DC
OUT
MAX
I
FB
LIM
I
LIM
OSCILLATOR
DC
Auto-Restart
MACHINE
Open-Loop
MAX
STATE
FAULT
Figure 3.
Drive
Reset
V
SHUTDOWN
ILIMIT
THERMAL
Pin Configuration.
Current Limit
Comparator
t
SAMPLE-OUT
6 V
5 V
+
-
BP/M
V
D Package (SO-8C)
FB
+
-
ILIMIT
D
1
2
4
SAMPLE
BLANKING
DELAY
LEADING
EDGE
REGULATOR
8
7
6
5
6 V
S
S
S
S
www.powerint.com
SOURCE
(S)
PI-4907-032808
PI-5293-022309
DRAIN
(D)