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LNK362 Datasheet(PDF) 1 Page - Power Integrations, Inc.

Part No. LNK362
Description  Energy Effi cient, Low Power Off-Line Switcher IC
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Maker  POWERINT [Power Integrations, Inc.]
Homepage  http://www.powerint.com
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LNK362 Datasheet(HTML) 1 Page - Power Integrations, Inc.

 
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LNK362-364
LinkSwitch-XT Family
Energy Efficient, Low Power
Off-Line Switcher IC
Figure 1. Typical Application with LinkSwitch-XT.
Product Highlights
Optimized for Lowest System Cost
Proprietary IC trimming and transformer construction
techniques enable Clampless™ designs with LNK362
for lower system cost, component count and higher
efficiency
Fully integrated auto-restart for short circuit and
open loop protection
Self-biased supply – saves transformer auxiliary winding
and associated bias supply components
Frequency jittering greatly reduces EMI
Meets HV creepage requirements between DRAIN and
all other pins both on the PCB and at the package
Lowest component count switcher solution
Features Superior to Linear/RCC
Accurate hysteretic thermal shutdown protection –
automatic recovery improves field reliability
Universal input range allows worldwide operation
Simple ON/OFF control, no loop compensation needed
Eliminates bias winding – simpler, lower cost
transformer
Very low component count – higher reliability and single
side printed circuit board
Auto-restart reduces delivered power by 95% during
short circuit and open loop fault conditions
High bandwidth provides fast turn on with no overshoot
and excellent transient load response
EcoSmart®– Extremely Energy Efficient
Easily meets all global energy efficiency regulations with
no added components
No-load consumption
<300 mW without bias winding at
265 VAC input (
<50 mW with bias winding)
ON/OFF control provides constant efficiency to very
light loads – ideal for mandatory CEC regulations
Applications
Chargers/adapters for cell/cordless phones, PDAs, digital
cameras, MP3/portable audio players, and shavers
Supplies for appliances, industrial systems, and metering
Description
LinkSwitch-XT incorporates a 700Vpower MOSFET, oscillator,
simple ON/OFF control scheme, a high voltage switched current
source, frequency jittering, cycle-by-cycle current limit and
®
Table 1. Notes: 1. Minimum continuous power in a typical non-
ventilated enclosed adapter measured at 50 °C ambient. 2. Minimum
practical continuous power in an open frame design with adequate
heat sinking, measured at 50 °C ambient. 3. Packages: P: DIP-8B,
G: SMD-8B. Please see Part Ordering Information. 4. See Key
Application Considerations section for complete description of
assumptions.
thermal shutdown circuitry onto a monolithic IC. The start-up
and operating power are derived directly from the DRAIN
pin, eliminating the need for a bias winding and associated
circuitry.
December 2005
OUTPUT POWER TABLE(4)
PRODUCT(3)
230 VAC ±15%
85-265 VAC
Adapter(1)
Open
Frame(2)
Adapter(1)
Open
Frame(2)
LNK362P or G
2.8 W
2.8 W
2.6 W
2.6 W
LNK363P or G
5 W
7.5 W
3.7 W
4.7 W
LNK364P or G
5.5 W
9 W
4 W
6 W
DC
Output
Wide Range
HV DC Input
LNK362
PI-4086-081005
+
+
LinkSwitch-XT
D
S
BP
FB
DC
Output
Wide Range
HV DC Input
LNK363-364
PI-4061-081005
+
+
LinkSwitch-XT
D
S
BP
FB
a) Clampless flyback converter with LNK362
b) Flyback converter with LNK363/4


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