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參數(shù)資料
| 型號(hào)： | MAX1579ETG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Complete Bias and White LED Power Supplies for Small TFT Displays |
| 中文描述： | LED DISPLAY DRIVER, QCC24 |
| 封裝： | 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD-2, TQFN-24 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 221K |
| 代理商： | MAX1579ETG |
M
Complete Bias and White LED Power S upplies
for S mall T FT Displays
4
_______________________________________________________________________________________
Note 1:
All devices are 100% production tested at T
A
= +25
°
C. Limits over the operating temperature range are guaranteed by design.
Note 2:
V
D1
is the forward-voltage drop of diode D1 in Figure 3.
Note 3:
Time from CTRL going below the Dual-Mode threshold to IC shutdown.
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 3, V
IN
= 3V, CTRL = ONBIAS = IN, T
A
= -40
°
C to +85
°
C, typical values are at T
A
= +25
°
C, unless otherwise noted. Note 1)
PARAMETER
CONDITIONS
N-CHANNEL SWITCH
LX On-Resistance
I
LX
= 190mA
MIN
TYP
MAX
UNITS
0.82
0.01
1
700
1.5
5
T
A
= +25°C
T
A
= +85°C
LX Leakage Current
V
LX
= 28V, CTRL = GND
μA
LX Current Limit
Duty cycle = 90%
500
900
mA
Typic al Operating Charac teristic s
(Circuit of Figure 3, V
IN
= 3.6V, I
LED
= 20mA, 4 LEDs, CTRL = IN, T
A
= +25
°
C, unless otherwise noted.)
50
55
60
65
70
75
80
85
90
0
5
10
15
20
25
LED EFFICIENCY vs. I
LED
M
LED CURRENT (mA)
E
2 LEDs
4 LEDs
6 LEDs
8 LEDs
50
55
60
65
70
75
80
85
90
2.5
3.0
3.5
INPUT VOLTAGE (V)
4.0
4.5
5.0
5.5
LED EFFICIENCY vs. V
IN
M
E
I
LED
= 2mA
I
LED
= 10mA
I
LED
= 20mA
0
10
5
20
15
25
30
-40
85
LED CURRENT vs. TEMPERATURE
M
TEMPERATURE (
°
C)
I
L
10
-15
35
60
MAX1579
R
CS
= 13
MAX1578
R
CS
= 22
0
5
15
10
20
25
0
1.0
0.5
1.5
2.0
2.5
LED CURRENT vs. V
CTRL
M
CTRL VOLTAGE (V)
I
L
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