MCP6002T-E/MC Microchip Technology

RT7302GS Richtek IC LED DRIVER OFFLINE DIM 8SOP

RT7302GS RICHTEK RT7302GS – Richtek – Primary-Side-Regulation Dimmable LED Driver 1 OUTPUT AC DC OFFLINE SWITCHER FLYBACK, STEP-DOWN (BUCK), STEP-UP (BOOST) PWM DIMMING 8-SOP RoHS

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Description

Richtek Technology Corporation RT7302GS LED Driver IC 1 Output AC DC Offline Switcher Flyback, Step-Down (Buck), Step-Up (Boost) PWM Dimming 8-SOP RoHS

The RT7302 is a constant current LED driver with active power factor correction. It supports high power factor across a wide range of line voltages, and it drives the converter in the Quasi-Resonant (QR) mode to achieve higher efficiency. By using Primary Side Regulation (PSR), the RT7302 controls the output current accurately without a shunt regulator and an opto-coupler at the secondary side, reducing the external component count, the cost, and the volume of the driver board.

The RT7302 is designed to be compatible with PWM Dimming. The output current can be modulated by the duty ratio of the external PWM dimming signal.

An in-house design High Voltage (HV) start-up device is integrated in the RT7302 to minimize the power loss and shorten the start-up time.

The RT7302 embeds comprehensive protection functions for robust designs, including LED open-circuit protection, LED short-circuit protection, output diode short-circuit protection, VDD Under-Voltage Lockout (UVLO), VDD Over-Voltage Protection (VDD OVP), Over-Temperature Protection (OTP), and cycle-by-cycle current limitation.

Features
  • Tight LED Current Regulation
  • No Opto-Coupler and TL431 Required
  • Power Factor Correction (PFC)
  • Compatible with PWM Dimming
  • Built-in HV Start-up Device
  • Quasi-Resonant
  • Maximum/Minimum Switching Frequency Clamping
  • Input Voltage Feed-Forward Compensation
  • Maximum/Minimum On-Time Limitation
  • Wide VDD Voltage Range (up to 25V)
  • Multiple Protection Features
    ? LED Open-Circuit Protection
    ? LED Short-Circuit Protection
    ? Output Diode Short-Circuit Protection
    ? VDD Under-Voltage Lockout
    ? VDD Over-Voltage Protection
    ? Over-Temperature Protection
    ? Cycle-by-Cycle Current Limit
  • RoHS Compliant and Halogen Free
Key Spec.
  RT7302
Status Active
Supply Voltage (min) (V)  
Supply Voltage (max) (V)  
Vin (min) (V) 12
Vin (max) (V) 25
Topology Buck-Boost;Flyback
Output C.C.
MOSFET Integrated No
PFC Y
Current Sense Threshold (mV)  
Dimming Control PWM
Features OCP;OVP
Package Type SOP-8

Manufacturer:Electronic Components
Datasheet:DS7302-03.pdf

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