LYTSwitch-5
Single-Stage LED Driver IC with Combined PFC and Constant Current Output in Isolated and Non-Isolated Topologies
Applications
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Product
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Data Sheet
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Power - Output (Max, Univ)
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Breakdown Voltage
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Protection Features
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Power Factor
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Topology
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Voltage - Input (Min)
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Voltage - Input (Max)
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Output Profile
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IC Package
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Mounting Type
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Product Type
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Temperature - Operating (Max)
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Temperature - Operating (Min)
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Internal Switch
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Auto-Restart & Overvoltage Response
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Over-Temperature Response
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Dimming Interface
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Control Features
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Data Sheet
View Data Sheet
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Power - Output (Max, Univ)
16 W
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Breakdown Voltage
650 V
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Protection Features
Input Overvoltage, Output Open Loop, Output Overvoltage, Output Undervoltage, Thermal Foldback
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Power Factor
High
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Topology
Buck-Boost, Flyback, Boost PFC
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Voltage - Input (Min)
90 V
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Voltage - Input (Max)
308 V
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Output Profile
CC
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IC Package
SO-16B
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Mounting Type
Surface Mount
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Product Type
IC
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Temperature - Operating (Max)
150 °C
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Temperature - Operating (Min)
-40 °C
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Internal Switch
Yes
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Auto-Restart & Overvoltage Response
Latch Off
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Over-Temperature Response
Hysteretic
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Dimming Interface
0-10 V, Analog, PWM
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Control Features
Frequency Jittering, Auto-Restart/Latching Fault Response
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|
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Data Sheet
View Data Sheet
|
Power - Output (Max, Univ)
25 W
|
Breakdown Voltage
650 V
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overvoltage, Output Undervoltage, Thermal Foldback
|
Power Factor
High
|
Topology
Buck-Boost, Flyback, Boost PFC
|
Voltage - Input (Min)
90 V
|
Voltage - Input (Max)
308 V
|
Output Profile
CC
|
IC Package
SO-16B
|
Mounting Type
Surface Mount
|
Product Type
IC
|
Temperature - Operating (Max)
150 °C
|
Temperature - Operating (Min)
-40 °C
|
Internal Switch
Yes
|
Auto-Restart & Overvoltage Response
Latch Off
|
Over-Temperature Response
Hysteretic
|
Dimming Interface
0-10 V, Analog, PWM
|
Control Features
Frequency Jittering, Auto-Restart/Latching Fault Response
|
|
|
Data Sheet
View Data Sheet
|
Power - Output (Max, Univ)
9 W
|
Breakdown Voltage
725 V
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overvoltage, Output Undervoltage, Thermal Foldback
|
Power Factor
High
|
Topology
Buck-Boost, Flyback, Boost PFC
|
Voltage - Input (Min)
90 V
|
Voltage - Input (Max)
308 V
|
Output Profile
CC
|
IC Package
SO-16B
|
Mounting Type
Surface Mount
|
Product Type
IC
|
Temperature - Operating (Max)
150 °C
|
Temperature - Operating (Min)
-40 °C
|
Internal Switch
Yes
|
Auto-Restart & Overvoltage Response
Latch Off
|
Over-Temperature Response
Hysteretic
|
Dimming Interface
0-10 V, Analog, PWM
|
Control Features
Frequency Jittering, Auto-Restart/Latching Fault Response
|
|
|
Data Sheet
View Data Sheet
|
Power - Output (Max, Univ)
16 W
|
Breakdown Voltage
725 V
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overvoltage, Output Undervoltage, Thermal Foldback
|
Power Factor
High
|
Topology
Buck-Boost, Flyback, Boost PFC
|
Voltage - Input (Min)
90 V
|
Voltage - Input (Max)
308 V
|
Output Profile
CC
|
IC Package
SO-16B
|
Mounting Type
Surface Mount
|
Product Type
IC
|
Temperature - Operating (Max)
150 °C
|
Temperature - Operating (Min)
-40 °C
|
Internal Switch
Yes
|
Auto-Restart & Overvoltage Response
Latch Off
|
Over-Temperature Response
Hysteretic
|
Dimming Interface
0-10 V, Analog, PWM
|
Control Features
Frequency Jittering, Auto-Restart/Latching Fault Response
|
|
|
Data Sheet
View Data Sheet
|
Power - Output (Max, Univ)
25 W
|
Breakdown Voltage
725 V
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overvoltage, Output Undervoltage, Thermal Foldback
|
Power Factor
High
|
Topology
Buck-Boost, Flyback, Boost PFC
|
Voltage - Input (Min)
90 V
|
Voltage - Input (Max)
308 V
|
Output Profile
CC
|
IC Package
SO-16B
|
Mounting Type
Surface Mount
|
Product Type
IC
|
Temperature - Operating (Max)
150 °C
|
Temperature - Operating (Min)
-40 °C
|
Internal Switch
Yes
|
Auto-Restart & Overvoltage Response
Latch Off
|
Over-Temperature Response
Hysteretic
|
Dimming Interface
0-10 V, Analog, PWM
|
Control Features
Frequency Jittering, Auto-Restart/Latching Fault Response
|
Product Details
Description
The LYTSwitch-5 family is ideal for single-stage power factor corrected constant current LED applications – bulbs, tubes and ballasts.
Each device incorporates a high-voltage power MOSFET and discontinuous mode, variable frequency, variable on-time controller. The controller also provides fast (cycle-by-cycle) current limit, input and output OVP, plus advanced thermal management circuitry.
The combination of a low-side switching topology, cooling via electronically quiet SOURCE pins and frequency jitter ensures extremely low EMI. This reduces the size of the input filter components – greatly reducing audible noise.
The part numbers shown in Table 1 describe 3 different power levels and two MOSFET voltage options to cost-optimize designs, while EcoSmart™ switching technology ensures maximum efficiency for each device size and load condition.
Product Highlights
Combined Single-Stage PFC + Accurate CC Output
- Accurate CC, better than ±3%
- Power Factor >0.9
- Low THD, <10% with typical input and output conditions
- >90% efficient in optimized designs
- High switching frequency and DCM allow compact magnetics
Design Flexibility
- Supports buck, buck-boost, tapped-buck, boost, isolated and non-isolated flyback topologies
- 2 MOSFET voltage options and 3 power levels for optimum device selection
Highest Reliability
- No electrolytic bulk capacitors or optoisolators for increased lifetime
- Comprehensive protection features
- Input and output overvoltage
- Open-loop protection
- Advanced thermal control
- Thermal foldback allows output light delivery at abnormally high ambient temperatures
- Hysteretic shutdown provides protection during fault conditions
