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• Integrated Power MOSFET Buck Type AC to DC LED Lighting ( ❋ Items in this solution Δ Other related products)
  Part Number Topology Power MOSFET Output Power Current Accuary OTHERS PF PACKAGE
HT7L4813 Buck 500V 12W/17W ±2% UVLO, OTP, OVP, OCP, open/Short >0.9 8SOP
  HT7L4815 Buck 500V 19W/21W ±2% UVLO, OTP, OVP, OCP, open/Short >0.9 8SOP
Δ HT7L4811 Buck - 45W ±2% UVLO, OTP, OVP, OCP, open/Short >0.9 SOT23-6
Δ HT7L5600 Flyback - 45W ±3% UVLO, OTP, OVP, OCP, open/Short >0.9 SOT23-6
Δ HT7L5610 Flyback 650V 13W/21W ±3% UVLO, OTP, OVP, OCP, open/Short >0.9 8DIP

Holtek has released a superior E27 LED bulb solution. A 500V high voltage power MOSFET is integrated into the IC reducing the requirement for this external power component. Several protection functions are also included such as VCC Under Voltage Lockout (UVLO), Over Current Protection (OCP), Output LED string open and short protection and VCC Over Voltage Protection (OVP), etc.

To help users to develop the related products quickly, Holtek provides a block diagram, application circuits, PCB, component list and other technical information.
To learn more about the competitive advantages of Holtek’s Buck AC-DC E27 LED Bulb solution, click “Learn more about our solutions”.

1

Application Areas

E27 LED Bulbs, MR16 Lamp Cups, etc.

2

Fewer components and smaller size

Integrated 500V high power MOSFET and integrated PFC circuits.                                            

3

Multi-protection and long service life

UVLO, OCP, OVP, etc., multiple protections.

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System Architecture and Connection Diagram

This solution uses the HT7L4813 which is a non-isolation buck PWM controller for LED lighting applications. It has a fully integrated PFC circuit which can achieve high power factor values.
In addition, the HT7L4813 includes an integrated 500V high voltage power MOSFET reducing the requirement for this external power component under appropriate power demands.

The HT7L4813 provides several protections such as VCC Under Voltage Lockout (UVLO), Over Current Protection (OCP), Output LED string open and short protection and VCC Over Voltage Protection (OVP), etc.

(C80001-A.ZIP) E27 12W LED Bulb
Description Files   Solution Description and Application Notes
Application Circuits Protel format
PCB Protel format
Block Diagram PDF
Component List   Excel format
(C80001-A.ZIP) E27 12W LED Bulb
Description Files   Solution Description and Application Notes
Application Circuits Protel format
PCB Protel format
Block Diagram PDF
Component List   Excel format
(C80001-A.ZIP) E27 12W LED Bulb
Description Files   Solution Description and Application Notes
Application Circuits Protel format
PCB Protel format
Block Diagram PDF
Component List   Excel format
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