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Numéro de référence | LD7750HGR | ||
Description | High Voltage Green-Mode PWM Controller | ||
Fabricant | Leadtrend | ||
Logo | |||
LD7750H
3/8/2011
High Voltage Green-Mode PWM Controller with
Over Temperature Protection
Rev. 00
General Description
The LD7750H integrates several functions of protections,
and EMI-improved solution in a SOP-8/or DIP-8 package
to minimize the component counts and the circuit space.
The device provides functions of low startup current,
green-mode power-saving operation, leading-edge
blanking of the current sensing and internal slope
compensation. Also, the LD7750H features more
protections like OLP (Over Load Protection), OVP (Over
Voltage Protection), and OTP (Over Temperature
Protection) to prevent the circuit being damaged under the
abnormal conditions. The LD7750H features built-in latch
function for OVP on Vcc pin and OLP.
Furthermore, the LD7750H features frequency swapping
to depress radiation noise, providing an excellent solution
for EMI filter design.
Features
z High-Voltage (500V) Startup Circuit
z Current Mode Control
z Green Mode Control
z UVLO (Under Voltage Lockout)
z LEB (Leading-Edge Blanking) on CS Pin
z Internal Frequency Swapping
z Internal Slope Compensation
z Internal Over Current Protection
z OVP (Over Voltage Protection) on Vcc
z OLP (Over Load Protection)
z External OTP through a NTC
z 500mA Driving Capability
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
LD7750H-DS-00 March 2011
1
www.leadtrend.com.tw
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Pages | Pages 19 | ||
Télécharger | [ LD7750HGR ] |
No | Description détaillée | Fabricant |
LD7750HGN | High Voltage Green-Mode PWM Controller | Leadtrend |
LD7750HGR | High Voltage Green-Mode PWM Controller | Leadtrend |
LD7750HGS | High Voltage Green-Mode PWM Controller | Leadtrend |
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