參數(shù)資料
型號: LNK626DG
廠商: POWER INTEGRATIONS INC
元件分類: 模擬信號調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO7
封裝: GREEN, PLASTIC, MS-012, SOP-8/7
文件頁數(shù): 11/18頁
文件大小: 535K
代理商: LNK626DG
Rev. E 09/09
2
LNK623-626
www.powerint.com
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 (BP) Pin:
This pin is the connection point for an external bypass capacitor
for the internally generated 6 V supply.
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 the output voltage
based on the yback voltage of the bias winding.
SOURCE (S) Pin:
This pin is internally connected to the output MOSFET source
for high voltage power and control circuit common returns.
Figure 2
Functional Block Diagram.
Figure 3.
Pin Conguration.
PI-5197-110408
SOURCE
(S)
LEADING
EDGE
BLANKING
+
-
+
-
+
-
DRAIN
(D)
BYPASS
(BP)
FEEDBACK
(FB)
SOURCE
(S)
FB
OUT
Reset
6 V
5 V
t
SAMPLE-OUT
V
ILIMIT
I
LIM
V
TH
V
ILIMIT
6.5 V
Drive
I
LIM
DC
MAX
t
SAMPLE-OUT
DC
MAX
FB
Current Limit
Comparator
STATE
MACHINE
SAMPLE
DELAY
THERMAL
SHUTDOWN
OSCILLATOR
FAULT
Auto-Restart
Open-Loop
DQ
REGULATOR
6 V
PI-5198-071608
3a
3b
D
S
BP
S
FB
P Package (DIP-8C)
D Package (SO-8C)
8
5
7
1
4
2
S
6
D
S
BP
S
FB
8
5
7
1
4
2
S
6
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