參數(shù)資料
型號(hào)： MAX1674
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
中文描述： 高效率、低電源電流、緊湊的、升壓型DC-DC轉(zhuǎn)換器
文件頁(yè)數(shù)： 1/12頁(yè)
文件大小： 160K
代理商： MAX1674
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
General Desc ription
The MAX1674/MAX1675/MAX1676 compact, high-effi-
ciency, step-up DC-DC converters fit in small μMAX
packages. They feature a built-in synchronous rectifier,
which improves efficiency and reduces size and cost
by eliminating the need for an external Schottky diode.
Quiescent supply current is only 16μA.
The input voltage ranges from 0.7V to V
OUT
, where
V
OUT
can be set from 2V to 5.5V. Start-up is guaran-
teed from 1.1V inputs. The MAX1674/MAX1675/
MAX1676 have a preset, pin-selectable output for 5V or
3.3V. The outputs can also be adjusted to other volt-
ages using two external resistors.
All three devices have a 0.3
N-channel MOSFET
power switch. The MAX1674 has a 1A current limit. The
MAX1675 has a 0.5A current limit, which permits the
use of a smaller inductor. The MAX1676 comes in a
10-pin μMAX package and features an adjustable cur-
rent limit and circuitry to reduce inductor ringing.
________________________Applic ations
Pagers
Wireless Phones
Medical Devices
Hand-Held Computers
PDAs
RF Tags
1 to 3-Cell Hand-Held Devices
____________________________Features
o
94% Efficient at 200mA Output Current
o
16μA Quiescent Supply Current
o
Internal Synchronous Rectifier (no external diode)
o
0.1μA Logic-Controlled Shutdown
o
LBI/LBO Low-Battery Detector
o
Selectable Current Limit for Reduced Ripple
o
Low-Noise, Anti-Ringing Feature (MAX1676)
o
8-Pin and 10-Pin μMAX Packages
o
Preassembled Evaluation Kit (MAX1676EVKIT)
M
High-Effic ienc y, Low-S upply-Current,
Compac t, S tep-Up DC-DC Converters
________________________________________________________________ Maxim Integrated Products
1
GND
LBO
SHDN
REF
1
2
8
7
OUT
LX
LBI
FB
MAX1674
MAX1675
μ
MAX
TOP VIEW
3
4
6
5
1
2
3
4
5
10
9
8
7
6
OUT
LX
GND
BATT
CLSEL
LBO
LBI
FB
MAX1676
μ
MAX
SHDN
REF
MAX1674
MAX1675
INPUT
0.7V TOV
OUT
SHDN
LX
LBO
OUT
LBI
0.1
μ
F
LOW-BATTERY
DETECT OUT
OFF
ON
REF
GND
FB
OUTPUT
3.3V, 5V, OR
ADJ (2V TO5.5V)
UP TO300mA
LOW-BATTERY
DETECT IN
PART
MAX1674
EUA
MAX1675
EUA
MAX1676
EUB
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
8 μMAX
8 μMAX
10 μMAX
_______________Ordering Information
EVALUATION KIT
AVAILABLE
Typic al Operating Circ uit
Pin Configurations
19-1360; Rev 0; 7/98
相關(guān)PDF資料
PDF描述
MAX1674-MAX1676 High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1676EUB High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1674EUA High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1675EUA High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1677 Compact, High-Efficiency, Dual-Output Step-Up and LCD Bias DC-DC Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1674EUA 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Compact Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1674EUA+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Compact Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1674EUA+T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Compact Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1674EUA-T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Compact Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1674EUA-TG069 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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