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LD7841

Single-Stage, High PF, Low THD , CV Output Offline ControllerPrimary-Sidewith Integrated High Voltage Startup

Active
LD7841
Key Features

Wide universal input range (85VAC ~ 305 VAC)

Fast Startup time: < 0.5 sec.

Low standby power

- No load power saving : < 0.2W
- Standby power consumption: < 0.4W at 150mW output

Precise CV regulation in the steady state : < ± 3 %

CV regulation in the load transient: < ± 15%

Total harmonic distortion current (THDi) optimization :< 10%

High Power Factor : PF > 0.92

Robust Protection Features

- Brown−In/Out Detection on HV pin
- Programmable Output OVP on FB pin
- Cycle−by−cycle Peak Current Limit on CS pin
- Over Load Protection
- Secondary Diode short Protection
- Short/Open Circuit Protection on CS and FB pin
- Winding Short Circuit Protection on FB pin
- Output Short Circuit Protection
- External OTP on CS pin
- Internal Over temperature Protection

250 mA / -700 mA Totem Pole Driving capability

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45W isolation driver
Pin Configuration
Ordering Information
Part number Package Top Mark Shipping
LD7841GS SOP-8 Green package LD7841GS 2500 /tape &reel
The LD7841 GS is ROHS compliant/ green packaged.
Protection Mode
ITEM BNO VcCOVP FBOVP SDSP CSSP CSOP FBUVP
(OSCP)
OLP CSOTP Int.OTP
LD7841 Auto Auto
(1 hiccup)
Auto
(1 hiccup)
Auto
(8 hiccups)
Auto
(8 hiccups)
Auto
(1 hiccup)
Auto
(4 hiccups)
Auto
(4  hiccups)
Auto
(1 hiccup)
Auto
(1 hiccup)
  • Suzhou
  • Shenzhen
  • Address: 177 East Suhong Road, Fangzheng Wisdom Valley, Suzhou Industrial Park

    Tel: +86 512-62373510

    Fax: +86 512-62373512

    E-mail: weixiliu@jypower.cn

  • Address: Building A5, Huaqiang Creative Industry Park, Guangming District, Shenzhen

    Tel: +86 18662166251

    E-mail: Stevenshi@jypower.cn

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