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參數資料
| 型號： | MAX1775EEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 32-Bit Digital Signal Controller with ROM 100-LQFP -40 to 125 |
| 中文描述： | 1 A DUAL SWITCHING CONTROLLER, 1250 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, MO-137AA, QSOP-16 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 290K |
| 代理商： | MAX1775EEE |
General Description
The MAX1775 is a dual, step-down DC-DC converter
that generates both the main (+3.3V at over 2A) and
core (+1.8V at up to 1.5A) supplies for a complete
power solution for PDAs, subnotebooks, and other
hand-held devices. The main output is adjustable from
+1.25V to +5.5V. The core output is adjustable from 1V
to 5V. Both switching converters operate at up to
1.25MHz for small external components and use syn-
chronous rectifiers to achieve efficiencies up to 95%.
Operation with up to 100% duty cycle provides the low-
est possible dropout voltage to extend useful battery
life.
The MAX1775 accepts inputs from +2.7V up to +28V,
allowing use with many popular battery configurations as
well as AC-DC wall adapters. Digital soft-start reduces
battery current surges at power-up. Both the main and
core converters have separate shutdown inputs. The
MAX1775 comes in a small 16-pin QSOP package.
The MAX1775 evaluation kit is available to help reduce
design time.
________________________Applications
Hand-Held Computers
PDAs
Internet Access Tablets
POS Terminals
Subnotebooks
Features
o
Dual, High-Efficiency, Synchronous Rectified
Step-Down Converter
o
Main Power
Adjustable from +1.25V to +5.5V
Over 2A Load Current
Up to 95% Efficiency
o
Core Power
Adjustable from 1V to 5V
Internal Switches
Up to 1.5A Load Current
Up to 92% Efficiency
o
100% (max) Duty Cycle
o
Up to 1.25MHz Switching Frequency
o
Input Voltage Range from +2.7V to +28V
o
170μA Quiescent Current
o
5μA Shutdown Current
o
Digital Soft-Start
o
Independent Shutdown Inputs
M
Dual-Output Step-Down
DC-DC Converter for PDA/Palmtop Computers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
SHDNM
LXC
INC
GND
FBC
CS-
CS+
FBM
REF
TOP VIEW
MAX1775
16 QSOP
SHDNC
PGND
IN
NDRV
CVL
PDRV
CVH
Pin Configuration
19-1811; Rev 1; 8/01
EVALUATION KIT
AVAILABLE
Ordering Information
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
16 QSOP
MAX1775EEE
SHDNM
IN
IN 2.7V TO 5.5V (28V IN CASCADE)
CVH
CORE
1.8V
1.5A
MAIN
3.3V
OVER 2A
SHDNC
ON
ON
OFF
OFF
NDRV
CS+
CS-
FBM
INC
LXC
FBC
CVL
REF
PGND
GND
PDRV
MAX1775
Typical Operating Circuit
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|---|---|
| MAX1776 | 32-Bit Digital Signal Controller with ROM 100-BGA MICROSTAR -40 to 85 |
| MAX1776EUA | 24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down Converter |
| MAX1777EEI | 32-Bit Digital Signal Controller with ROM 100-BGA MICROSTAR -40 to 125 |
| MAX1777 | High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers |
| MAX1777-MAX1999 | High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1775EEE+ | 功能描述:直流/直流開關轉換器 Dual-Out Step-Down for PDA/Palmtop 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 |
| MAX1775EEE+T | 功能描述:直流/直流開關轉換器 Dual-Out Step-Down for PDA/Palmtop 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 |
| MAX1775EEE-T | 功能描述:直流/直流開關轉換器 Dual-Out Step-Down for PDA/Palmtop 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 |
| MAX1775EEE-TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1775EVKIT | 功能描述:直流/直流開關轉換器 Evaluation Kit for the MAX1775 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 |
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