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LNK363DN Datasheet, PDF (1/16 Pages) Power Integrations, Inc. – Energy Effi cient, Low Power Off-Line Switcher IC | |||
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LNK362-364
LinkSwitch®-XT Family
Energy Efï¬cient, Low Power
Off-Line Switcher IC
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
efï¬ciency
⢠Fully integrated auto-restart for short circuit and
open loop protection
⢠Self-biased supply â 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 â
automatic recovery improves ï¬eld reliability
⢠Universal input range allows worldwide operation
⢠Simple ON/OFF control, no loop compensation needed
⢠Eliminates bias winding â simpler, lower cost
transformer
⢠Very low component count â 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®â Extremely Energy-Efï¬cient
⢠Easily meets all global energy efï¬ciency 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 efï¬ciency to very
light loads â 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 700 V power MOSFET, oscillator,
simple ON/OFF control scheme, a high-voltage switched current
source, frequency jittering, cycle-by-cycle current limit and
thermal shutdown circuitry onto a monolithic IC. The startup
+
DC
Output
Wide Range
HV DC Input
LinkSwitch-XT
D
LNK362
FB
BP
S
a) Clampless ï¬yback converter with LNK362
+
PI-4086-081005
DC
Output
Wide Range
HV DC Input
LinkSwitch-XT
D LNK363-364
FB
BP
S
b) Flyback converter with LNK363/4
PI-4061-081005
Figure 1. Typical Application with LinkSwitch-XT.
OUTPUT POWER TABLE(4)
230 VAC ±15%
85-265 VAC
PRODUCT(3)
Adapter(1)
Open
Frame(2)
Adapter(1)
Open
Frame(2)
LNK362P/G/D 2.8 W 2.8 W 2.6 W 2.6 W
LNK363P/G/D 5 W
7.5 W 3.7 W 4.7 W
LNK364P/G/D 5.5 W
9W
4W
6W
Table 1. Output Power Table.
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, D: SO-8C. Please see Part
Ordering Information.
4. See Key Application Considerations section for complete description
of assumptions.
and operating power are derived directly from the DRAIN
pin, eliminating the need for a bias winding and associated
circuitry.
November 2008
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