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参数资料
| 型号： | MAX1579ETG |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 显示驱动器 |
| 英文描述： | Complete Bias and White LED Power Supplies for Small TFT Displays |
| 中文描述： | LED DISPLAY DRIVER, QCC24 |
| 封装： | 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD-2, TQFN-24 |
| 文件页数： | 3/13页 |
| 文件大小： | 221K |
| 代理商： | MAX1579ETG |
M
Complete Bias and White LED Power S upplies
for S mall T FT Displays
_______________________________________________________________________________________
3
PARAMETER
CONDITIONS
MIN
-10.2
TYP
-9.8
1.5
MAX
-9.3
3
UNITS
V
k
NEG Output Voltage
N E G D schar g e S w ch Resi stance
LOGIC INPUT (ONBIAS)
Logic Input Low Voltage
Logic Input High Voltage
I
LOAD
= 0 to -100μA
V
ONBIAS
= 0V
0.72
V
V
1.6
T
A
= +25°C
T
A
= +85°C
0.01
1
1
Input Current
μA
LED BACKLIGHTING
Efficiency
LOAD = 6 LEDs in series at 20mA
84
%
OUT Voltage Range
(Note 2)
(V
IN
-
V
D1
)
32
V
Overvoltage-Lockout (OVLO)
Threshold
V
OUT
rising, 2V hysteresis
32
34
36
V
V
OUT
= 32V, V
CTRL
> 0.24V
10
20
0.01
0.1
32
1
T
A
= +25°C
T
A
= +85°C
OUT Input Bias Current
V
OUT
= V
IN
, V
CTRL
= 0
μA
ERROR AMPLIFIER
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= +85°C
MAX1578
0.295
0.292
0.300
0.300
0.01
0.03
500
500
185
170
8.2
60
0.305
0.308
1
CTRL to CS Regulation
V
CTRL
= 1.5V, V
IN
= 2.7V to
5.5V
V
CS Input Bias Current
V
CS
= V
CTRL
/ 5
μA
250
250
780
780
T
A
= +25°C
T
A
= +85°C
CTRL Input Resistance
V
CTRL
< 1.0V
MAX1579
k
CTRL Dual Mode
Threshold
CTRL Shutdown Delay
CS to COMP Transconductance
5mV hysteresis
(Note 3)
V
COMP
= 1.0V
100
6.5
32
240
10.5
90
mV
ms
μS
CS Regulation Derating Function
Start Temperature
V
CTRL
= 3V, MAX1579 only
+42
°C
CS Regulation Derating Function
Slope
V
CTRL
= 3V, T
A
= +65°C, MAX1579 only
-6
mV/°C
MAX1578, V
CTRL
= 3V
MAX1579, V
CTRL
= 3V, T
A
= +25°C
MAX1578
MAX1579
310
322
327
340
1.635
1.70
345
358
CS Maximum Brightness Clamp
Voltage
mV
CS Maximum Brightness Voltage
at CTRL
OSCILLATOR
Operating Frequency
V
f
BOOST
PWM mode
Pulse skipping
CTRL = IN, CS = GND
0.8
1.0
12
0
95
1.2
MHz
Minimum Duty Cycle
%
Maximum Duty Cycle
Dual Mode is a trademark of Maxim Integrated Products, Inc.
92
%
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)
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