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JoulWatt JW1761A

Offline Step-down LED Regulator With High Voltage MOSFET

Overview

TopologyBuck Converter
Input voltage90-264 V
Output 140 V / 0.18 A

Description

EV1761A is a 40V/180mA LED driver EVB based on JW1761AThe JW1761A is a constant current LED regulator with high current accuracy which applies to single stage step-down LED drivers.500V power MOS isintegrated, which can significantly simplify the design of LED lighting system.High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reduces the switching losses and largely increases the efficiency.JW1761A is supplied from the output directly, and auxiliary winding is not needed.JW1761A has multi-protection functions which largely enhance the safety and reliability of the system, including VCC over-voltage protection, VCC UVLO, short-circuit protection, LED open protection, cycle-by-cycle current limit and over-temperature protection.

Features

  • No auxiliary winding
  • 500V high voltage MOSFET integrated
  • High current accuracy of line and load regulation
  • low output current-ripple
  • Critical conduction mode
  • High efficiency over wide operating range
  • Cycle-by-cycle current limit
  • LED short protection
  • LED open protection
  • Over-temperature protection
  • Compact SOP7 packageRemarks:-IC AVAILABLE IN IC FOLDER

Typical applications

  • Non-isolation Offline LED driver

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(Ω)
RDC max.
(Ω)
fres
(MHz)
Mount Samples
768772102
STE ALT EAG CAD LTS PSP SPE CAD IGSWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) 1000 0.5 0.55 1.75 2.08 1.8 THT
Order Code Data­sheet
768772102
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(Ω)
RDC max.
(Ω)
fres
(MHz)
Mount Samples