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LNK408LG Datasheet(PDF) 2 Page - Power Integrations, Inc.

Part No. LNK408LG
Description  LinkSwitch-PH LED Driver IC Family
Download  20 Pages
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Maker  POWERINT [Power Integrations, Inc.]
Homepage  http://www.powerint.com
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LNK408LG Datasheet(HTML) 2 Page - Power Integrations, Inc.

 
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Rev. D 08/11
2
LNK403-409/413-419
www.powerint.com
Figure 4.
Pin Configuration.
Pin Functional Description
DRAIN (D) Pin:
This pin is the power FET drain connection. It also provides
internal operating current for both start-up and steady-state
operation.
SOURCE (S) Pin:
This pin is the power FET source connection. It is also the
ground reference for the BYPASS, FEEDBACK, REFERENCE and
VOLTAGE MONITOR pins.
BYPASS (BP) Pin:
This is the connection point for an external bypass capacitor for
the internally generated 5.9 V supply. This pin also provides
output power selection through choice of the BYPASS pin
capacitor value.
FEEDBACK (FB) Pin:
The FEEDBACK pin is used for output voltage feedback. The
current into the FEEDBACK pin is directly proportional to the
output voltage. The FEEDBACK pin also includes circuitry to
protect against open load and overload output conditions.
REFERENCE (R) Pin:
This pin is connected to an external precision resistor and is
used to configure for dimming (LNK403-409) and non-TRIAC
dimming (LNK413-419) modes of operation.
VOLTAGE MONITOR (V) Pin:
This pin interfaces with an external input line peak detector,
consisting of a rectifier, filter capacitor and resistors. The
applied current is used to control stop logic for line under-
voltage (UV), overvoltage (OV), provide feed-forward to control
the output current and the remote ON/OFF function.
PI-5431-102610
ILIM
DRAIN (D)
SOURCE (S)
BYPASS (BP)
VOLTAGE
MONITOR (V)
FEEDBACK (FB)
REFERENCE (R)
ILIM
VSENSE
MI
IS
5.9 V
5.0 V
BYPASS PIN
UNDERVOLTAGE
FAULT
PRESENT
Gate
Driver
SenseFet
OCP
CURRENT LIMIT
COMPARATOR
1 V
6.4 V
FBOFF
FBOFF
IFB
IV
DCMAX
DCMAX
Comparator
5.9 V
REGULATOR
SOFT-START
TIMER
JITTER
CLOCK
OSCILLATOR
AUTO-RESTART
COUNTER
BYPASS
CAPACITOR
SELECT
FEEDBACK
SENSE
PFC/CC
CONTROL
LINE
SENSE
HYSTERETIC
THERMAL
SHUTDOWN
+
-
+
-
3-VT
VBG
UV/OV
REFERENCE
BLOCK
LEB
MI
VBG
STOP
LOGIC
PI-5432-082411
Exposed Pad
(backside) Internally
Connected to
SOURCE Pin (see
eSIP-7C Package
Drawing)
1 R
2 V
3 FB
4 BP
5 S
7 D
E Package (eSIP-7C)
(Top View)
Lead Bend Outward
from Drawing
(Refer to eSIP-7F Package
Outline Drawing)
Exposed Pad
(Backside) Internally
Connected to
SOURCE Pin
7
D
5
S
4
BP
3
FB
2
V
1
R
L Package (eSIP-7F)
Figure 3.
Functional Block Diagram.


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