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LNK500G-TL Datasheet

  • LNK500G-TL

  • Energy Efficient, CV or CV/CC Switcher for Very Low Cost Ada...

  • 20頁

  • POWERINT

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廬
LNK500
LinkSwitch
Family
Energy Efficient, CV or CV/CC Switcher for
Product Highlights
Cost Effective Linear/RCC Replacement
鈥?Lowest cost and component count, constant voltage (CV)
or constant voltage/constant current (CV/CC) solution
鈥?Extremely simple circuit configuration
鈥?Up to 75% lighter power supply reduces shipping cost
鈥?Primary based CV/CC solution eliminates 10 to 20
secondary components for low system cost
鈥?Combined primary clamp, feedback, IC supply, and loop
compensation functions鈥搈inimizes external components
鈥?Fully integrated auto-restart for short circuit and open
loop fault protection鈥搒aves external component costs
鈥?42 kHz operation simplifies EMI filter design
Much Higher Performance Over Linear/RCC
鈥?Universal input range allows worldwide operation
鈥?Up to 70% reduction in power dissipation鈥搑educes
enclosure size significantly
鈥?CV/CC output characteristic without secondary feedback
鈥?System level thermal and current limit protection
鈥?Meets all single point failure requirements with only one
additional clamp capacitor
鈥?Controlled current in CC region provides inherent soft-start
鈥?Optional opto feedback improves output voltage accuracy
LinkSwitch
D
C
S
廬
Wide Range
HV DC Input
DC
Output
(V
O
)
(a)
V
O
Example Characteristic
Min
Typ
(CV only) (CV/CC)
鹵10%
V
O
鹵5%
鹵25%*
For Circuit
Shown Above
I
O
(b)
鹵25%*
With Optional
Secondary Feedback**
I
O
*Estimated tolerance achievable in high volume production
including transformer and other component tolerances.
**See Optional Secondary Feedback section.
PI-3415-021103
Figure 1. Typical Application 鈥?not a Simplified Circuit (a) and
Output Characteristic Tolerance Envelopes (b).
EcoSmart
- Extremely Energy Efficient
鈥?Consumes <300 mW at 265 VAC input with no load
鈥?Meets Blue Angel, Energy Star, and EC requirements
鈥?No current sense resistors鈥搈aximizes efficiency
Applications
鈥?Linear transformer replacement in all
鈮?
W applications
鈥?Chargers for cell phones, cordless phones, PDAs, digital
cameras, MP3/portable audio devices, shavers, etc.
鈥?Home appliances, white goods and consumer electronics
鈥?TV standby and other auxiliary supplies
廬
OUTPUT POWER TABLE
1
PRODUCT
4
LNK500
P or G
230 VAC
鹵
15%
85-265 VAC
Min
2
Typ
2
Min
2
Typ
2
No-Load
Input
Power
3.2 W 4 W 2.4 W 3 W <300 mW
4.3 W 5.5 W 2.9 W 3.5 W <500 mW
3
Description
LinkSwitch
is specifically designed to replace low power linear
transformer/RCC chargers and adapters at equal or lower system
cost with much higher performance and energy efficiency. LNK500
is a lower cost version of the LNK501 with a wider tolerance
output CC characteristic.
LinkSwitch
introduces a revolutionary
patented topology for the design of low power switching power
supplies that rivals the simplicity and low cost of linear adapters,
Table 1.
Notes:
1.
Output power for designs in an enclosed adapter
measured at 50
擄C
ambient.
2.
See Figure 1 (b) for Min (CV only designs)
and Typ (CV/CC charger designs) power points identified on output
characteristic.
3.
Uses higher reflected voltage transformer designs for
increased power capability 鈥?see Key Application Considerations section.
4.
See Part Ordering Information.
and enables a much smaller, lighter, and attractive package when
compared with the traditional "brick". With efficiency of up to
75% and < 300 mW no-load consumption,
a
LinkSwitch
solution
can save the end user enough energy over a linear design to
completely pay for the full power supply cost in less than one
year.
LinkSwitch
integrates a 700 V power MOSFET, PWM
control, high voltage start-up, current limit, and thermal shutdown
circuitry, onto a monolithic IC.
March 2003

LNK500G-TL 產(chǎn)品屬性

  • 1,000

  • 集成電路 (IC)

  • PMIC - AC-DC 轉(zhuǎn)換器，離線開關(guān)

  • LinkSwitch®

  • 隔離

  • 24 ~ 49.5kHz

  • -

  • 700V

  • 5.5W

  • -40°C ~ 150°C

  • 8-SMD（7 個接腳），鷗形翼

  • SMD-8B

  • 帶卷 (TR)

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