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HA8503B

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Package : DIP-7
With MOSFET : Built-in
MOSFET/BJT : MOS
BVdss : 650V
RDS(on) : 2.6Ω
Standby Power : <70mW
CC/CV Precision : ±4%
Max Vdd : 34.5V
Max Oper.Frequency : 70K
Output Power : 5V/3.6A,12V2A
Product details

GENERAL DESCRIPTION

The HA8503B is a family of a high performance Primary Side Regulation (PSR) power switch with high precision CV/CC control ideal for charger applications.  
In CV mode, The HA8503B adopts Multi Mode Control which uses the hybrid of AM (Amplitude Modulation) mode and (Frequency Modulation) FM mode to improve system efficiency and reliability.  
In CC mode, the IC uses PFM control with line and load CC compensation. The IC can achieve audio noise free operation and optimized dynamic response. The built-in Cable Drop Compensation (CDC) function can provide excellent CV performance.
The HA8503B integrates functions and protections of Under Voltage Lockout (UVLO), VDD over Voltage Protection (VDD OVP), Cycle-by-cycle Current Limiting (OCP), Short Load Protection (SLP), and VDD Clamping.   
HA8503B is available in DIP-7 package.

 

FEATURES

Integrated with 650V MOSFET
Multi Mode PSR Control
Audio Noise Free Operation for PSR
Optimized Dynamic Response for PSR
Low Standby Power <70mW
±4% CC and CV Regulation
Programmable Cable Drop Compensation (CDC) in PSR CV Mode
Built-in AC Line & Load CC Compensation
Build in Protections:
  Short Load Protection (SLP)
  On-Chip Thermal Shutdown (OTP)
  Cycle-by-Cycle Current Limiting
  Leading Edge Blanking (LEB)
  Pin Floating Protection
  VDD UVLO, OVP & Clamp

 

TYPICAL APPLICATION

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HA8503B
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