ADT6780 Datasheet, PDF (1/13 Pages) ADTech – Thermally enhanced Low VFB Step-Down LED Driver

Thermally enhanced Low V_FB Step-Down LED Driver
ADT6780
Thermally enhanced
Low V_FB Step-Down LED Driver
ADT6780
General Description
The ADT6780 is a thermally enhanced current mode step down LED driver. That is designed
to deliver constant current to high power LEDs. The device is suitable for various high power
LED application due to the wide operating range(VIN 4.5V~28V) and high output
capability(continuous 2A). with a very low feedback voltage(V_FB=0.2V) power dissipation can
be minimized. Fault condition protection includes cycle-by-cycle current limiting and thermal
shutdown.
The package is available in a standard SOP8-PP(with Exposed pad) package.
Features
• Feedback reference voltage : 0.2V
• Current mode buck LED driver with 925kHz
fixed frequency
• Input voltage range : 4.5V to 28V
• Continuous output current : 2A
• Up to 93% efficiency
• Integrated Power MOSFET switch : 80mΩ
• 10㎂ shutdown mode
• Thermal shutdown & current limit protection
• Under Voltage LOckout
Applications
• High power LED/IR-LED Lighting
• Automotive and Marine Lighting
• Architecture Lighting
• General Lighting Solutions
Typical Application Circuit
C5
1 _BST
SW ³
VIN
EN
2 _VIN
C1
U1
FB ⁵
7 _EN
COMP ⁶
8 _SS
C4
4
GND
L1
D1
C2
D2
R1
C3
R2
C6
OPTION
VOUT
Jul. 12. 2012 / Preliminary
Figure 1. Typical Application Circuit
* This specifications are subject to be changed without notice
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