AL1677 Series

UNIVERSAL, HIGH EFFICIENCY AND ACCURACY LED DRIVER CONVERTER

Catalog

UNIVERSAL, HIGH EFFICIENCY AND ACCURACY LED DRIVER CONVERTER

Part	Number of Outputs	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Supply (Max) [Max]	Voltage - Output	Mounting Type	Applications	Supplier Device Package	Type	Topology	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output / Channel	Voltage - Supply (Min) [Min]	Current - Output / Channel [custom]
Diodes Inc AL1677-08BS-13	1	8-SOIC	3.9 mm	0.154 in	16.2 V	15 VDC	Surface Mount	Lighting	8-SO	AC DC Offline Switcher	Step-Down (Buck)	105 °C	-40 °C	800 mA	8.5 V
Diodes Inc AL1677-05BS-13	1	8-SOIC	3.9 mm	0.154 in	16.2 V	15 VDC	Surface Mount	Lighting	8-SO	AC DC Offline Switcher	Step-Down (Buck)	105 °C	-40 °C	500 mA	8.5 V
Diodes Inc AL1677-10BS-13	1	8-SOIC	3.9 mm	0.154 in	16.2 V	15 VDC	Surface Mount	Lighting	8-SO	AC DC Offline Switcher	Step-Down (Buck)	105 °C	-40 °C		8.5 V	1 A

Catalog

UNIVERSAL, HIGH EFFICIENCY AND ACCURACY LED DRIVER CONVERTER

Key Features

• >90% Efficiency

• Valley Detection to Minimize Switching Loss

• Universal Rectified 85 to 277 VAC Input Range

• Internal MOSFET up to 500V

• Tight Current Sense Tolerance: ±3%

• Low Startup Current: 170µA

• Low Operation Current: 100µA

• Standard Inductor (No auxiliary winding)

• Internal Protections:Undervoltage Lockout (UVLO)Leading-Edge Blanking (LEB)

• Undervoltage Lockout (UVLO)

• Leading-Edge Blanking (LEB)

• Output Open Protection

• Output Short Protection

• Open-Load and Reload Detection

• Thermal Fold-Back Function

• Overtemperature Protection

• SO-8 Package

Description

The AL1677 is an universal AC input (85~277 VAC rectified), high efficiency and high accuracy Buck LED driver converter. The AL1677 topology provides accurate constant current (CC) line and load regulation, operating at boundary conduction mode (BCM) to ease in EMI/EMC qualification and testing to meet the latest regulatory laws.The AL1677 system removes the auxiliary winding and external high voltage MOSFET with a few external components to create a low bill material (BOM) cost solution. The AL1677 has rich protection features to improve the system safety and reliability. It has thermal feedback function which can reduce the output current when the driver’s temperature is higher than the setting value.