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參數(shù)資料
| 型號： | MAX1747 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Triple Charge-Pump TFT LCD DC-DC Converter |
| 中文描述： | 三路電荷泵TFT LCD DC-DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 401K |
| 代理商： | MAX1747 |
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX1747 triple charge-pump DC-DC converter
provides the regulated voltages required by active
matrix thin-film transistor (TFT) liquid-crystal displays
(LCDs) in a low-profile TSSOP package. One high-
power and two low-power charge pumps convert the
+2.7V to +4.5V input supply voltage into three indepen-
dent output voltages.
The primary high-power charge pump generates an
output voltage (V
OUT
) between 4.5V and 5.5V that is
regulated within ±1%. The low-power BiCMOS control
circuitry and the low on-resistance (R
ON
) power
MOSFETs maximize efficiency. The adjustable switch-
ing frequency (200kHz to 2MHz) provides fast transient
response and allows the use of small low-profile ceram-
ic capacitors.
The dual low-power charge pumps independently regu-
late one positive output (V
POS
) and one negative output
(V
NEG
). These additional outputs use external diode
and capacitor multiplier stages (as many stages as
required) to regulate output voltages up to +35V and
-35V.
The constant switching frequency and a proprietary
regulation algorithm minimize output ripple and capaci-
tor sizes for all three charge pumps. The MAX1747 is
available in the ultra-thin TSSOP package (1.1mm max
height).
M
Triple Charge-Pump TFT LCD
DC-DC Converter
________________________________________________________________
Maxim Integrated Products
1
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
OUT
CXP
SUPM
CXN
FB
RDY
TGND
TGND
TOP VIEW
PGND
SUPP
DRVP
SUPN
REF
GND
IN
INTG
12
11
9
10
DRVN
SHDN
FBN
FBP
MAX1747
TSSOP
Pin Configuration
19-1788; Rev 0; 10/00
Ordering Information
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
20 TSSOP
MAX1747EUP
Features
o
Adjustable Outputs
Up to +5.5V Main High-Power Output
Up to +35V Positive Charge-Pump Output
Down to -35V Negative Charge-Pump Output
o
200kHz to 2MHz Adjustable Switching Frequency
o
+2.7V to +4.5V Input Supply
o
Internal Power MOSFETs
o
0.1μA Shutdown Current
o
Internal Soft-Start
o
Power-Ready Output
o
Internal Supply Sequencing
o
Fast Transient Response
o
Ultra-Thin Solution (No Inductors)
o
Thin TSSOP Package (1.1mm max)
Applications
TFT Active-Matrix LCDs
Passive-Matrix Displays
Personal Digital Assistants (PDAs)
IN
FB
SUPN
DRVP
FBP
INTG
PGND
DRVN
GND
TGND
MAX1747
SHDN
RDY
FBN
REF
INPUT
TO
μ
C
SUPM
MAIN OUTPUT
POSITIVE
OUTPUT
CXP
CXN
OUT
SUPP
NEGATIVE
OUTPUT
Typical Operating Circuit
EVALUATION KIT
AVAILABLE
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| MAX1747EUP | Triple Charge-Pump TFT LCD DC-DC Converter |
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| MAX1748EUE | Triple-Output TFT LCD DC-DC Converter |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1747EUP | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1747EUP+ | 功能描述:電荷泵 Triple Charge-Pump TFT LCD DC/DC Conv RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1747EUP+T | 功能描述:電荷泵 Triple Charge-Pump TFT LCD DC/DC Conv RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1747EUP-T | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1747EVKIT | 功能描述:電源管理IC開發(fā)工具 MAX1747 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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