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LNK408LG Datasheet(PDF) 1 Page - Power Integrations, Inc.

Part No. LNK408LG
Description  LinkSwitch-PH LED Driver IC Family
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Maker  POWERINT [Power Integrations, Inc.]
Homepage  http://www.powerint.com
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LNK408LG Datasheet(HTML) 1 Page - Power Integrations, Inc.

 
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LNK403-409/413-419
LinkSwitch-PH LED Driver IC Family
www.powerint.com
August 2011
Single-Stage PFC, Primary-Side Constant Current Control
and TRIAC Dimming/Non-Dimming Options
Output Power Table1,2
Product5
R
V = 2 MW
R
V = 4 MW
85-132 VAC
85-308 VAC
Minimum
Output
Power3
Maximum
Output
Power4
Minimum
Output
Power3
Maximum
Output
Power4
LNK403/413E/L
2.5 W
4.5 W
6.5 W
12 W
LNK404/414E/L
2.5 W
5.5 W
6.5 W
15 W
LNK405/415E/L
3.8 W
7.0 W
8.5 W
18 W
LNK406/416E/L
4.5 W
8.0 W
10 W
22 W
LNK407/417E/L
5.5 W
10 W
12 W
25 W
LNK408/418E/L
6.8 W
13.5 W
16 W
35 W
LNK409/419E/L
8.0 W
20 W
18 W
50 W
Table 1. Output Power Table.
Notes:
1. Continuous power in an open frame with adequate heat sinking at device local
ambient of 70 °C.
2. Power level calculated on typical LED string voltage with efficiency >80%.
3. Minimum output power with C
BP = 10 mF.
4. Maximum output power with C
BP = 100 mF. LNK4x3EG CBP = 10 mF.
5. Package: eSIP-7C, eSIP-7F.
Product Highlights
Dramatically Simplifies Off-line LED Drivers
Single-stage combination of power factor correction and
accurate constant-current (CC) output
Enables very long lifetime designs (no electrolytic capacitors)
Eliminates optocoupler and all secondary current control
circuitry
Eliminates control loop compensation circuitry
Simple primary-side PWM dimming interface
Universal input voltage range
LNK403-409 optimized for flicker-free TRIAC dimming
EcoSmart– Energy Efficient
Single-stage PFC combined with output CC control
Greatly increases efficiency, >90% achievable
Reduces component count
No current sense resistors
Low standby power remote ON/OFF feature
(<50 mW at 230 VAC)
Accurate and Consistent Performance
Compensates for transformer inductance variations
Compensates for line input voltage variation
Frequency jittering greatly reduces EMI filter size and cost
Advanced Protection and Safety Features
Auto-restart for short-circuit protection
Open circuit fault detection mode
Automatic thermal shutdown restart with hysteresis
Meets high voltage creepage requirement between DRAIN and
all other signal pins both on PCB and at package
Green Package
Halogen free and ROHS compliant package
Applications
Off-line LED driver
Description
The LinkSwitch-PH dramatically simplifies implementation of LED
drivers requiring long lifetime, high efficiency, PF >0.9, and TRIAC
dimming capability (LNK403-409). The single-stage combined
power factor and constant-current controller eliminates a switching
stage and the electrolytic bulk capacitor. The advanced primary-
side control used by the LinkSwitch-PH device provides accurate
constant current control while eliminating the need for an
optocoupler and current sensing circuits.
LinkSwitch-PH incorporates a 725 V power FET, a continuous-
mode PWM controller, a high voltage switched current source for
self biasing, frequency jittering, protection circuitry including
cycle-by-cycle current limit and hysteretic thermal shutdown.
Figure 2.
Package Options.
eSIP-7F (L Package)
eSIP-7C (E Package)
Figure 1.
Typical Application Schematic.
PI-6543-082211
LinkSwitch-PH
AC
IN
D
S
BP
V
FB
R
CONTROL
RV


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