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參數資料
| 型號： | MAX1748EUE+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Triple-Output TFT-LCD DC-DC Converters |
| 中文描述： | 2 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.40 MM, 1.10 MM HEIGHT, 0.65 MM PITCH, EXPOSED PAD, TSSOP-16 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 278K |
| 代理商： | MAX1748EUE+ |
General Description
The MAX1748 triple-output DC-DC converter in a low-
profile TSSOP package provides the regulated voltages
required by active matrix, thin-film transistor (TFT) liquid
crystal displays (LCDs). One high-power DC-DC con-
verter and two low-power charge pumps convert the
+3.3V to +5V input supply voltage into three independent
output voltages.
The primary high-power DC-DC converter generates a
boosted output voltage (VMAIN) up to 13V that is regu-
lated within ±1%. The low-power BiCMOS control cir-
cuitry and the low on-resistance (0.35
) of the
integrated power MOSFET allows efficiency up to 93%.
The 1MHz current-mode PWM architecture provides
fast transient response and allows the use of ultra-small
inductors and ceramic capacitors.
The dual charge pumps independently regulate one
positive output (VPOS) and one negative output (VNEG).
These low-power outputs use external diode and
capacitor stages (as many stages as required) to regu-
late output voltages up to +40V and down to -40V. A
proprietary regulation algorithm minimizes output rip-
ple, as well as capacitor sizes for both charge pumps.
The MAX1748 is available in the ultra-thin TSSOP pack-
age (1.1mm max height).
________________________Applications
TFT Active Matrix LCD Displays
Passive Matrix LCD Displays
PDAs
Digital Still Cameras
Camcorders
Features
o Three Integrated DC-DC Converters
o 1MHz Current-Mode PWM Boost Regulator
Up to +13V Main High-Power Output
±1% Accuracy
High Efficiency (93%)
o Dual Charge-Pump Outputs
Up to +40V Positive Charge-Pump Output
Down to -40V Negative Charge-Pump Output
o Internal Supply Sequencing
o Internal Power MOSFETs
o +2.7V to +5.5V Input Supply
o 0.1A Shutdown Current
o 0.6mA Quiescent Current
o Internal Soft-Start
o Power-Ready Output
o Ultra-Small External Components
o Thin TSSOP Package (1.1mm max)
MAX1748
Triple-Output TFT LCD DC-DC Converter
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
RDY
TGND
LX
PGND
SUPP
DRVP
SUPN
DRVN
SHDN
TOP VIEW
MAX1748
TSSOP
FB
INTG
REF
IN
GND
FBP
FBN
Pin Configuration
19-1740; Rev 0; 6/00
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Ordering Information
Typical Operating Circuit appears at end of data sheet.
16 TSSOP
PIN-PACKAGE
TEMP. RANGE
-40°C to +85°C
MAX1748EUE
PART
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| MAX174ACPI+ | Industry-Standard, 12-Bit ADC with Reference |
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| MAX174ACWI+T | Industry-Standard, 12-Bit ADC with Reference |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1748EUE+ | 功能描述:直流/直流開關轉換器 Triple-Output TFT LCD DC/DC Converters RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1748EUE+T | 功能描述:直流/直流開關轉換器 Triple-Output TFT LCD DC/DC Converters RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1748EUE-T | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1748EUE-TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1748EVKIT | 功能描述:電源管理IC開發工具 MAX1748 Eval Kit RoHS:否 制造商:Maxim Integrated 產品: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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