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LD7576A fiches techniques PDF

Leadtrend - Green-Mode PWM Controller

Numéro de référence LD7576A
Description Green-Mode PWM Controller
Fabricant Leadtrend 
Logo Leadtrend 





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LD7576A fiche technique
LD7576A
1 1/29/2009
Green-Mode PWM Controller with High-Voltage
Start-Up Circuit and Adjustable OLP Delay Time
REV. 00b
General Description
The LD7576A brings hi gh performance, and com bines
highly inte grated functions, protections an d EMI-improve
solution. It’s an id eal so lution for those cost-sensitive
systems, redu cing comp onent count and overa ll s ystem
cost.
The LD7576A features near-lossless high v oltage startup
circuit, green-mode power-saving operation, leading-edge
blanking of the curre nt sensi ng an d i nternal slop e
compensation. They are also equipped with protections,
such as OLP (Over Load Pro tection), OVP (Over Voltage
Protection) and OT P (Over T emperature Protection), to
prevent circuit damage under abnormal conditions.
Features
z High-Voltage (500V) Startup Circuit
z Current Mode Control
z Non-Audible-Noise Green Mode Control
z UVLO (Under Voltage Lockout)
z LEB (Leading-Edge Blanking) on CS Pin
z Internal Slope Compensation
z OVP (Over Voltage Protection) on Vcc
z On-Chip OTP (Over Temperature Protection)
z OLP (Over Load Protection)
z 500mA Driving Capability
z Adjustable OLP delay time
Applications
z Switching AC/DC Adaptor and Battery Charger
z Open Frame Switching Power Supply
z LCD Monitor/TV Power
Typical Application
Leadtrend Technology Corporation
LD7576A-DS-00b November , 2009
1
www.leadtrend.com.tw
http://www.Datasheet4U.com

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