LYT2001D by Power Integrations | LED Drivers | Avnet EMEA
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LYT2001D

Power Integrations

LED DRVR Flyback 1-CH None 308V 1.025A 7-Pin SOIC

Manufacturer Part #: LYT2001D

Alternate Part #: LYT2001D


RoHS Compliant

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Information

The LYTSwitch-2 family of ICs dramatically simplifies low power CC LED drivers by eliminating the optocoupler and secondary control circuitry. The family introduces a revolutionary control technique which provides accurate output current regulation, compensating for transformer and external component variations, and device parameter tolerances as well as input voltage variations. The device incorporates a high-voltage switching MOSFET, an ON/OFF control state-machine, a high-voltage switched current source for self-biasing, frequency jitter to reduce EMI, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry into a monolithic IC. This high level of integration enables cost-effective designs with very few external components, reducing solution cost and driver size. LYTSwitch-2 parts minimize energy consumption when the output is unloaded. Practical designs can easily achieve less than 30 mW no-load consumption. The 725 V power MOSFET used in LYTSwitch-2 devices increases the circuits’ ability to withstand input surge. In addition, each package is designed to maximize the creepage distance between high-voltage pins and logic level inputs. This increased pin spacing increases driver lifetime and reliability in polluted environments. These in-built protection features also protect the entire circuit from excess temperature.

Key Features

  • Transformer inductance variation
  • External component changes with temperature
  • Input line voltage variations This enhances production yield Cost-Effective, Small Size Designs
  • Eliminates the optocoupler and secondary CC control circuitry
  • Eliminates control loop compensation circuitry
  • Frequency-jitter greatly reduces EMI filter cost
  • Programmable switching frequency reduces transformer size
  • 725 V switching power MOSFET enables clampless flyback designs Advanced Protection/Safety Features
  • Auto-restart protection reduces power delivered by >90% for output short-circuit and control loop faults (open and short-circuit components)
  • Hysteretic thermal shutdown – with automatic recovery
  • Meets high-voltage creepage requirements between DRAIN and all other pins both on the PCB and at the package

Technical Attributes

Description
Value
Find similar Parts
Lead Finish
Matte Tin
AC Input Voltage (Max)
725 V
Number of Channels
1
Output Type
Constant Current
Type
Switching
Switching Frequency (Max)
85 kHz
Minimum Output Current
0.975 A
Maximum Output Current
1.025 A
Output Voltage (Min)
90 V
Output Voltage (Max)
308 V
Switching Frequency (Min)
0.3 kHz
Max Processing Temp
260
Dimming Method
None
Input Voltage Type
AC/DC
Supplier Package
SOIC
Topology
Flyback
Product Dimensions
4.9 x 3.9 x 1.5(Max)
Pin Count
7
AC Input Voltage (Min)
50 V
Mounting
Surface Mount
Operating Temperature
-40 to 150 °C

ECCN / UNSPSC

Description
Value
ECCN:
EAR99
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