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參數資料
| 型號： | MAX1626 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers(降壓型,輸出電壓5V/3.3V，輸出電流2A的DC-DC變換器) |
| 中文描述： | 5V/3.3V或可調、100%占空比、高效率、降壓型DC-DC控制器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 222K |
| 代理商： | MAX1626 |
_______________General Desc ription
The MAX1626/MAX1627 step-down DC-DC switching
controllers provide high efficiency over loads ranging
from 1mA to more than 2A. A unique current-limited,
pulse-frequency-modulated (PFM) control scheme
operates with up to a 100% duty cycle, resulting in very
low dropout voltages. This control scheme eliminates
minimum load requirements and reduces the supply
current under light loads to 90μA (versus 2mA to 10mA
for common pulse-width modulation controllers).
These step-down controllers drive an external P-chan-
nel MOSFET, allowing design flexibility for applications
to 12W or higher. Soft-start reduces current surges dur-
ing start-up. A high switching frequency (up to 300kHz)
and operation in continuous-conduction mode allow the
use of tiny surface-mount inductors. Output capacitor
requirements are also reduced, minimizing PC board
area and system costs.
The output voltage is preset at 5V or 3.3V for the
MAX1626 and adjustable for the MAX1627. Input volt-
ages can be up to 16.5V. The MAX1626/MAX1627 are
functional upgrades for the MAX1649/MAX1651.
________________________Applic ations
PCMCIA Power Supplies
Personal Digital Assistants
Hand-Held Computers
Portable Terminals
Low-Cost Notebook Computer Supplies
5V to 3.3V Green PC Applications
High-Efficiency Step-Down Regulation
Minimum-Component DC-DC Converters
Battery-Powered Applications
____________________________Features
o
Low Dropout Voltage
o
100% Maximum Duty Cycle
o
Soft-Start Limits Start-Up Current
o
Efficiency >90% (3mA to 2A Loads)
o
Output Power >12.5W
o
90μA Max Quiescent Current
o
1μA Max Shutdown Current
o
Up to 300kHz Switching Frequency
o
16.5V Max Input Voltage
o
Output Voltage: 5V/3.3V (MAX1626)
Adjustable (MAX1627)
o
Current-Limited Control Scheme
M
5V /3.3V or Adjustable, 100% Duty-Cyc le,
High-Effic ienc y, S tep-Down DC-DC Controllers
________________________________________________________________ Maxim Integrated Products
1
MAX1626
V+
CS
SHDN
GND
3/5
ON/OFF
P
EXT
REF
OUT
OUTPUT
3.3V
INPUT
3.3V to 16.5V
__________________Pin Configuration
1
2
3
4
8
7
6
5
GND
EXT
CS
V+
REF
SHDN
3/5 (FB)
OUT
( ) ARE FOR MAX1627
SO
TOP VIEW
MAX1626
MAX1627
__________Typic al Operating Circ uit
19-1075; Rev 0; 6/96
EFOLLOWS DATA SHEET
PART
MAX1626
C/D
MAX1626ESA
MAX1627
C/D
MAX1627ESA
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
Dice*
8 SO
Dice*
8 SO
______________Ordering Information
*Dice are tested at T
A
= +25°C.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1627 | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers(降壓型,輸出電壓5V/3.3V，輸出電流2A的DC-DC變換器) |
| MAX164 | CMOS 12Bits ADC With Track and Hold(100ksps,12位，單通道,并行ADC) |
| MAX163 | CMOS 12Bits ADC With Track and Hold(100ksps,單通道，并行,12位ADC) |
| MAX167 | CMOS 12Bits ADC With Track and Hold(100ksps,12位，單通道,并行ADC) |
| MAX165 | CMOS レP-Compatible, 5レs, 8-Bit ADCs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1626C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX1626ESA | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1626ESA+ | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1626ESA+T | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1626ESA-T | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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