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參數(shù)資料
| 型號(hào)： | MAX1748-MAX8726 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Triple-Output TFT-LCD DC-DC Converters |
| 中文描述： | 三輸出的TFT - LCD的DC - DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 277K |
| 代理商： | MAX1748-MAX8726 |
M
Triple-Output TFT LCD DC-DC Converter
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN,
SHDN
, TGND to GND.........................................-0.3V to +6V
DRVN to GND.........................................-0.3V to (V
SUPN
+ 0.3V)
DRVP to GND..........................................-0.3V to (V
SUPP
+ 0.3V)
PGND to GND.....................................................................±0.3V
RDY
to GND ...........................................................-0.3V to +14V
LX, SUPP, SUPN to PGND .....................................-0.3V to +14V
INTG, REF, FB, FBN, FBP to GND...............-0.3V to (V
IN
+ 0.3V)
ELECTRICAL CHARACTERISTICS
(V
IN
= +3.0V,
SHDN
= IN, V
SUPP
= V
SUPN
= 10V, TGND = PGND = GND, C
REF
= 0.22μF, C
INTG
= 470pF,
T
A
= 0°C to +85°C
, unless
otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
Input Supply Range
V
IN
Input Undervoltage Threshold
V
UVLO
V
IN
rising, 40mV hysteresis (typ)
IN Quiescent Supply Current
I
IN
V
FB
= V
FBP
= 1.5V, V
FBN
= -0.2V
SUPP Quiescent Current
I
SUPP
V
FBP
= 1.5V
SUPN Quiescent Current
I
SUPN
V
FBN
= -0.1V
IN Shutdown Current
V
SHDN
= 0, V
IN
= 5V
SUPP Shutdown Current
V
SHDN
= 0, V
SUPP
= 13V
SUPN Shutdown Current
V
SHDN
= 0, V
SUPN
= 13V
MAIN BOOST CONVERTER
Output Voltage Range
V
MAIN
FB Regulation Voltage
V
FB
T
A
= 0
°
C to +85
°
C
FB Input Bias Current
I
FB
V
FB
= 1.25V, INTG = GND
Operating Frequency
f
OSC
Oscillator Maximum Duty Cycle
Load Regulation
I
MAIN
= 0 to 200mA, V
MAIN
= 10V
Line Regulation
Integrator Gm
LX Switch On-Resistance
R
LX(ON)
I
LX
= 100mA
LX Leakage Current
I
LX
V
LX
= 13V
Phase I = soft-start (1.0ms)
Phase II = soft-start (1.0ms)
Phase III = soft-start (1.0ms)
Phase IV = fully on (after 3.0ms)
Maximum RMS LX Current
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ..........755mW
Operating Temperature Range
MAX1748EUE .................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MIN
2.7
2.2
TYP
MAX
5.5
2.6
1
0.8
0.8
10
10
10
UNITS
V
V
mA
mA
mA
μ
A
μ
A
μ
A
2.4
0.6
0.4
0.4
0.1
0.1
0.1
V
IN
1.235
-50
0.85
78
13
V
V
1.248
1.261
50
1.15
90
nA
MHz
%
%
% / V
μ
mho
μ
A
1
85
0.2
0.1
320
0.35
0.01
0.380
0.75
1.12
1.5
1
0.7
20
0.500
0.275
LX Current Limit
I
LX(MAX)
1.1
2.0
A
A
Soft-Start Period
t
SS
Power-up to the end of Phase III
3072 /
f
OSC
1.1
s
FB Fault Trip Level
POSITIVE CHARGE PUMP
V
SUPP
Input Supply Range
1.07
1.14
V
V
SUPP
2.7
13
V
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