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LNK501P датащи(PDF) 2 Page - Power Integrations, Inc.

номер детали LNK501P
подробное описание детали  Energy Efficient, CV/CC Switcher for Very Low Cost Chargers and Adapters
PDF  20 Pages
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производитель  POWERINT [Power Integrations, Inc.]
домашняя страница  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

LNK501P датащи(HTML) 2 Page - Power Integrations, Inc.

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F
9/02
LNK501
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.
Figure 3. Pin Configuration.
PI-2711-073107
S
D
S
S
S
C
5
7
8
S
4
2
3
1
P Package (DIP-8B)
G Package (SMD-8B)
LNK501
Figure 2. Block Diagram.
PI-2777-071802
SHUTDOWN/
AUTO-RESTART
PWM
COMPARATOR
CLOCK
SAW
OSCILLATOR
INTERNAL
SUPPLY
5.7V
4.7V
SOURCE
S
R
Q
DMAX
-
+
CONTROL
-
+
5.7V
IFB
Z C
VC
+
-
EDGE
0
1
HYSTERETIC
THERMAL
SHUTDOWN
LEADING
EDGE
BLANKING
CURRENT
LIMIT
ADJUST
LOW
FREQUENCY
OPERATION
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN
IDCS
CURRENT LIMIT
COMPARATOR
RE
÷ 8



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