ADT6780 ADTECH [ADTech], ADT6780 Datasheet - Page 4

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

Jul. 12. 2012 / Preliminary
Note4. guaranteed by design.
Electrical Characteristics (Ta=25℃, V
Supply current (shutdown)
Supply current (quiescent)
Feedback voltage
Error Amplifier Voltage Gain
Error Amplifier Transconductance
High-Side Switch On Resistance (Note4)
Low-Side Switch On Resistance (Note4)
High-Side Switch Leakage Current
Peak Current Limit
Current sense to COMP transconductance
Oscillator frequency
Fold-back frequency
Maximum Duty cycle
Minimum On time
UVLO rising threshold
UVLO threshold hysteresis
EN threshold voltage
Enable pull-up current
Soft-Start Period
Thermal shutdown (Note4)
Parameters
Thermally enhanced Low V
* This specifications are subject to be changed without notice
Symbol
R
R
D
I
V
A
G
G
F
T
OFF
ON.H
I
ON.L
MAX
SW
ON
Q
EA
EA
FB
CS
IN
=12V, unless otherwise noted)
V
V
4.5V ≤ V
V
-
ΔI
-
-
V
Duty=50%
-
-
V
V
-
V
-
-
V
C4 = 100㎋
-
EN
EN
COMP
EN
FB
FB
EN
EN
4/13
COMP
= 0V
= 0.15V, IO=1A
= 0V
= 3V, V
= 0V , V
rising
= 0V
Condition
< 2V
FB
= ±10㎂
IN
Step-Down LED Driver
≤ 28V,
FB
SW
= 1.4V
= 0V
Min.
0.184
2.00
0.8
76
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ.
0.200
2.35
750
750
925
125
100
250
145
0.7
0.1
1.1
2.0
10
80
10
11
86
3
3
http://www.ad-tech.co.kr
Max.
0.216
2.70
1.4
10
99
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ADT6780
Unit
㎂/V
V/V
A/V
mΩ
㎂
㎃
㎂
㎑
㎑
㎱
㎷
㎂
㎳
℃
%
V
Ω
A
V
V