产品名称:

CX7501

耐压:
输出电压:
输出电流:
输出电压精度:
输出限流精度:
线补:
频率:
限流:
OCP/OVP:
OTP:
MOS:
工作模式:
封装: SOP7
备注: 内置800V三极管 QR 无补偿元件动态优 带载启机动性能好
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Introduce

GENERAL DESCRIPTION


CX7501 is a high performance Quasi Resonant(QR) Primary Side Regulation (PSR) PWM power switch with high precision CV/CC control ideal for charger applications.

 In CV mode, CX7501 adopts Multi Mode QR 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 fast dynamic response. The built-in Cable Drop Compensation (CDC) function can provide excellent CV performance.

CX7501 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), On-Chip Thermal Shutdown, VDD Clamping, etc.


FEATURES


●  Low Cost Solution Built-in 800V power BJT

●  Quasi-Resonant Primary Side Regulation (QR-PSR) Control with High Efficiency

●  Multi-Mode PSR Control

●  Fast Dynamic Response

●  Built-in Dynamic Base Drive

●   Audio Noise Free Operation

●  ± ±4% CC and CV Regulation

●  Low Standby Power<70mW

●  Programmable Cable Drop Compensation(CDC) in CV Mode

●  Built-in AC Line & Load CC Compensation

●  Build in Protections:

●  Short Load Protection (SLP)

●  Cycle-by-Cycle Current Limiting

●  Leading Edge Blanking (LEB)

●  Pin Floating Protection

●  VDD OVP & UVP & Clamp

●  Over temperature protection(OTP)

●  Available with Versions in SOP-7 Package


APPLICATIONS


●  Battery Chargers for Cellular Phones

●  AC/DC Power Adapter and LED Lightings


TYPICAL APPLICATION CIRCUIT


CX7501


Pin Configuration


CX7501


Pin Description


CX7501


Block Diagram


CX7501




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