參數(shù)資料
型號： MAX1745
廠商： Maxim Integrated Products, Inc.
英文描述： High-Voltage, Step-Down DC-DC Controller in レMAX
中文描述： 高壓、降壓型DC-DC控制器，µMAX封裝
文件頁數(shù)： 1/14頁
文件大?。?/td> 256K
代理商： MAX1745
General Description
The MAX1744/MAX1745 are step-down DC-DC con-
trollers capable of handling up to 36V inputs. These
parts use a proprietary current-limited control scheme
for excellent light- and full-load efficiency, while their
330kHz (max) switching frequency permits small exter-
nal components for space-critical applications.
Operation to 100% duty cycle permits the lowest possi-
ble dropout voltage.
The MAX1744 contains an internal feedback network
that provides a pin-selectable output voltage of either
3.3V or 5V. The MAX1745 uses an external feedback
network to generate an adjustable output voltage
between 1.25V and 18V.
The MAX1744/MAX1745 are available in a space-sav-
ing 10-pin μMAX package.
________________________Applications
Automotive Electronics
Telecom Systems
Wall-Cube-Powered Devices
Industrial Control Systems
Firewire/IEEE1394
____________________________Features
o
High-Voltage Operation (up to 36V IN)
o
Efficiency >90%
o
Output Power Capability Exceeds 50W
o
10-Pin μMax Package
o
Low-Dropout Voltage
o
100% (max) Duty Cycle
o
90μA Quiescent Current
o
4μA Shutdown Current
o
Up to 330kHz Switching Frequency
o
Output Voltage
5V or 3.3V (MAX1744)
Adjustable 1.25V to 18V (MAX1745)
o
Current-Limited Control Scheme
M
High-Voltage, Step-Down DC-DC
Controller in μMAX
________________________________________________________________
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
19-1776; Rev 1; 10/01
Ordering Information
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +125
°
C
-40
°
C to +85
°
C
-40
°
C to +125
°
C
PART
PIN-PACKAGE
10 μMAX
10 μMAX
10 μMAX
10 μMAX
MAX1744
EUB
MAX1744AUB
MAX1745
EUB
MAX1745AUB
GND
OUT
REF
VL
CS
MAX1744
3/5
5V
3.3V
ON
OFF
SHDN
IN
VH
EXT
P
IN
4.5V TO 36V
OUT
3.3V
OR 5V
Typical Operating Circuit
1
2
3
4
5
10
9
8
7
6
IN
EXT
VH
3/5 (FB)
( ) ARE FOR MAX1745 ONLY.
REF
VL
GND
MAX1744
MAX1745
μ
MAX
TOP VIEW
CS
OUT
SHDN
Pin Configuration
相關(guān)PDF資料
PDF描述
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MAX1745EUB High-Voltage, Step-Down DC-DC Controller in レMAX
MAX1744AUB High-Voltage, Step-Down DC-DC Controller in レMAX
MAX1745AUB High-Voltage, Step-Down DC-DC Controller in レMAX
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1745AUB 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
MAX1745AUB+ 功能描述:DC/DC 開關(guān)控制器 Step-Down DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
MAX1745AUB+T 功能描述:DC/DC 開關(guān)控制器 Step-Down DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
MAX1745AUB-T 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
MAX1745EUB 功能描述:DC/DC 開關(guān)控制器 Step-Down DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
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