ADT6780 ADTECH [ADTech], ADT6780 Datasheet - Page 3

• Manufacturer Part Number: ADT6780
• Description: Thermally enhanced Low VFB Step-Down LED Driver
• Manufacturer: ADTECH [ADTech]

Jul. 12. 2012 / Preliminary
Functional Block Diagram
Operating Ratings
Absolute Maximum Ratings (Note1)
Note1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
Note2. Derate 17mW/℃ above +25℃. This is recommended to operate under this power dissipation specification.
Note3. Measured on JESD51-7, 4-layer PCB
Power supply voltage
SW pin voltage
BST pin voltage
All Other Pins
Max. power dissipation (Ta=25℃) (Note2)
Thermal resistance (Note3)
Storage temperature
Junction temperature
Power supply voltage
Output voltage
Operating temperature
Junction temperature
FB
5
Reference
Shutdown
Regulator
Voltage
Internal
EN
Parameter
Parameter
7
Thermally enhanced Low V
* This specifications are subject to be changed without notice
OSC
+
Figure 2. Functional Block Diagram
-
Error
Amplifier
COMP
6
Σ
Symbol
Symbol
T
V
V
T
T
V
Θ
V
V
J.MAX
P
T
OPR
OUT
STG
BST
SW
-
SS
IN
+
IN
D
JA
-
J
8
3/13
Current
Comparator
Limit
VIN
2
FB
Regulator
Step-Down LED Driver
Min.
Min.
-40
-0.3
-0.5
-0.3
-0.3
4.5
0.2
-65
-
-
-
-
Control
LOGIC
Current
Sense
Amplifier
Typ.
12.0
Typ.
60
-
-
-
Driver
Driver
-
-
-
-
-
-
-
+
-
http://www.ad-tech.co.kr
V
GND
V
Max.
+125
4
IN
Max.
28.0
+150
+150
+85
SW
2.08
16
+6
30
R
+ 0.3
-
S
+ 6
1
3
BST
SW
ADT6780
℃/W
Unit
Unit
℃
℃
℃
℃
W
V
V
V
V
V
V