R7780A
R7780A is Burst Triple Mode PWM Controller manufactured by Richtek.
Description
The R7780A is a high-performance current mode PWM controller with integrated HV start-up device inside. During start-up, a current source through integrated HV device to charge VDD capacitor for quick start-up while it dissipates no loss in normal operation. The R7780A provides users a superior AC/DC power application of higher efficiency, few external ponent count, and low cost solution. It features frequency jitter, Under Voltage Lock Out (UVLO), Leading Edge Blanking (LEB), internal slope pensation in the tiny SOP-7 package, and offers plete protection coverage with Over Temperature Protection (OTP), Over Load Protection (OLP) and Over Voltage Protection (OVP).
Ordering Information
R7780A Package Type S : SOP-7 N : DIP-8 Lead Plating System G : Green (Halogen Free and Pb Free)
Note : Richtek products are :
Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in Sn Pb or Pb-free soldering processes.
Marking Information
R7780AGS
R7780A GSYMDNN
R7780AGS : Product Number YMDNN : Date Code
Features
- Integrated HV Start-up Device
- UVLO: 9V/16.5V
- Current Mode Control
- Built-in 65k Hz Operation Frequency
- Built-in Jittering Frequency
- Internal PWM Leading Edge Blanking
- Internal Slope pensation
- pensated Burst Triple Mode PWM
- Cycle-by-Cycle Current Limit
- Internal Auto Recovery OVP
- Internal Auto Recovery OLP
- Internal Auto Recovery OTP
- CS Pin Open Protection
- Secondary Rectifier Short Protection
- Soft Driving for Reducing EMI Noise
- High Noise Immunity
- Ro HS pliant and Halogen Free
Applications
- Switching AC/DC Adaptor
- TV and Monitor Application
- Low Standby Power Home Appliance
Pin Configurations
(TOP VIEW)
NC P
CS GND
2 3 4
7 HV
6 VDD 5...
