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LNK305DN

Description
Switching Regulator, 0.8A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7
CategoryPower/power management    The power supply circuit   
File Size923KB,18 Pages
ManufacturerPower Integrations
Websitehttps://www.powerint.cn
Environmental Compliance
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LNK305DN Overview

Switching Regulator, 0.8A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7

LNK305DN Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP,
Contacts8
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time14 weeks
Other featuresREQUIRES AN AC SUPPLY OF 85 TO 256V
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
Control TechnologyPULSE WIDTH MODULATION
JESD-30 codeR-PDSO-G8
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current0.8 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency70 kHz
Temperature levelAUTOMOTIVE
Terminal surfacePure Matte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3.9 mm
Base Number Matches1
LNK302/304-306
LinkSwitch-TN
Family
Lowest Component Count, Energy-Efficient
Off-Line Switcher IC
Product Highlights
Cost Effective Linear/Cap Dropper Replacement
Lowest cost and component count buck converter solution
Fully integrated auto-restart for short-circuit and open loop
fault protection – saves external component costs
LNK302 uses a simplified controller without auto-restart for
very low system cost
66 kHz operation with accurate current limit – allows low cost
off-the-shelf 1 mH inductor for up to 120 mA output current
Tight tolerances and negligible temperature variation
High breakdown voltage of 700 V provides excellent input
surge withstand
Frequency jittering dramatically reduces EMI (~10 dB)
Minimizes EMI filter cost
High thermal shutdown temperature (+135
°C
minimum)
Much Higher Performance Over Discrete Buck and
Passive Solutions
Supports buck, buck-boost and flyback topologies
System level thermal overload, output short-circuit and open
control loop protection
Excellent line and load regulation even with typical configuration
High bandwidth provides fast turn-on with no overshoot
Current limit operation rejects line ripple
Universal input voltage range (85 VAC to 265 VAC)
Built-in current limit and hysteretic thermal protection
Higher efficiency than passive solutions
Higher power factor than capacitor-fed solutions
Entirely manufacturable in SMD
EcoSmart
– Extremely Energy Efficient
Consumes typically only 50/80 mW in self-powered buck
topology at 115/230 VAC input with no-load (opto feedback)
Consumes typically only 7/12 mW in flyback topology with
external bias at 115/230 VAC input with no-load
Meets California Energy Commission (CEC), Energy Star, and
EU requirements
Applications
Appliances and timers
LED drivers and industrial controls
FB
BP
S
Wide Range LinkSwitch-TN
High-Voltage
DC Input
+
D
DC
Output
+
PI-3492-041509
Figure 1.
Typical Buck Converter Application (See Application Examples Section
for Other Circuit Configurations).
Output Current Table
1
Product
4
LNK302P/G/D
LNK304P/G/D
LNK305P/G/D
LNK306P/G/D
230 VAC ±15%
MDCM
2
63 mA
120 mA
175 mA
225 mA
CCM
3
80 mA
170 mA
280 mA
360 mA
85-265 VAC
MDCM
2
63 mA
120 mA
175 mA
225 mA
CCM
3
80 mA
170 mA
280 mA
360 mA
Table 1. Output Current Table.
Notes:
1. Typical output current in a non-isolated buck converter. Output power capability
depends on respective output voltage. See Key Applications Considerations
Section for complete description of assumptions, including fully discontinuous
conduction mode (DCM) operation.
2. Mostly discontinuous conduction mode.
3. Continuous conduction mode.
4. Packages: P: DIP-8B, G: SMD-8B, D: SO-8C.
Description
LinkSwitch-TN is specifically designed to replace all linear and
capacitor-fed (cap dropper) non-isolated power supplies in the
under 360 mA output current range at equal system cost while
offering much higher performance and energy efficiency.
LinkSwitch-TN devices integrate a 700 V power MOSFET,
oscillator, simple On/Off control scheme, a high-voltage switched
current source, frequency jittering, cycle-by-cycle current limit
www.powerint.com
and thermal shutdown circuitry onto a monolithic IC. The start-up
and operating power are derived directly from the voltage on the
DRAIN pin, eliminating the need for a bias supply and associated
circuitry in buck or flyback converters. The fully integrated
auto-restart circuit in the LNK304-306 safely limits output power
during fault conditions such as short-circuit or open loop,
reducing component count and system-level load protection
cost. A local supply provided by the IC allows use of a non-
safety graded optocoupler acting as a level shifter to further
enhance line and load regulation performance in buck and
buck-boost converters, if required.
June 2013
This Product is Covered by Patents and/or Pending Patent Applications.

LNK305DN Related Products

LNK305DN LNK306DN LNK302DN LNK305DN-TL LNK304DG LNK302DN-TL LNK302DG LNK302G-TL
Description Switching Regulator, 0.8A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 1.4A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 0.2A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 0.8A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 0.4A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 0.2A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 0.2A, 70kHz Switching Freq-Max, PDSO8, SOP-8/7 Switching Regulator, 0.2A, 70kHz Switching Freq-Max, PDSO8, PLASTIC SURFACE MOUNT, DIP-8
Is it Rohs certified? conform to conform to conform to conform to conform to conform to conform to incompatible
Parts packaging code SOIC SOIC SOIC SOIC SOIC SOIC SOIC SOIC
package instruction SOP, SOP, SOP, SOP, SOP, SOP, SOP, SOP,
Contacts 8 8 8 8 8 8 8 8
Reach Compliance Code compliant compliant compliant compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Other features REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V REQUIRES AN AC SUPPLY OF 85 TO 256V
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
length 4.9 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm 9.575 mm
Number of functions 1 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8 8 8
Maximum operating temperature 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
Maximum output current 0.8 A 1.4 A 0.2 A 0.8 A 0.4 A 0.2 A 0.2 A 0.2 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP SOP SOP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 NOT SPECIFIED 260 NOT SPECIFIED 260 NOT SPECIFIED 260 NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 3.68 mm
surface mount YES YES YES YES YES YES YES YES
Switch configuration BUCK BUCK BUCK BUCK BUCK BUCK BUCK BUCK
Maximum switching frequency 70 kHz 70 kHz 70 kHz 70 kHz 70 kHz 70 kHz 70 kHz 70 kHz
Temperature level AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 2.54 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 40 NOT SPECIFIED 40 NOT SPECIFIED 40 NOT SPECIFIED 40 NOT SPECIFIED
width 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm 6.35 mm
Base Number Matches 1 1 1 1 1 1 1 1
Factory Lead Time 14 weeks 14 weeks 14 weeks 14 weeks 14 weeks 14 weeks - -
Humidity sensitivity level 1 - 1 4 1 - 1 4
Terminal surface Pure Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Pure Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) -
JESD-609 code - e3 e3 - e3 e3 e3 -
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