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Numéro de référence | LD7750GN | ||
Description | High Voltage Green-Mode PWM Controller | ||
Fabricant | Leadtrend | ||
Logo | |||
LD7750
2/23/2010
High Voltage Green-Mode PWM Controller with
Over Temperature Protection
Rev. 00b
General Description
Features
The LD7750 integrates several functions of protections,
and EMI-improved solution in a SOP-8, SOP-7, 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 LD7750 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 LD7750 features built-in
auto-recovery function for OVP on Vcc pin and OLP.
Furthermore, the LD7750 features frequency swapping to
depress radiation noise, providing an excellent solution for
EMI filter design.
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 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
AC
input
EMI
Filter
*
HV VCC OUT
LD7750
OTP
CS
GND COMP
*See Application Information
*
photocoupler
Leadtrend Technology Corporation
LD7750-DS-00b February 2010
1
www.leadtrend.com.tw
Free Datasheet http://www.datasheet4u.ne
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Pages | Pages 20 | ||
Télécharger | [ LD7750GN ] |
No | Description détaillée | Fabricant |
LD7750GN | High Voltage Green-Mode PWM Controller | Leadtrend |
LD7750GR | High Voltage Green-Mode PWM Controller | Leadtrend |
LD7750GS | High Voltage Green-Mode PWM Controller | Leadtrend |
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