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MAX1834

更新时间： 2024-10-02 22:57:59
品牌 Logo 应用领域
美信 - MAXIM 转换器电池
页数 文件大小 规格书
12页 511K
描述
High-Efficiency Step-Up Converters with Reverse Battery Protection

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MAX1834 数据手册

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19-1802; Rev 1; 10/03  
High-Efficiency Step-Up Converters with  
Reverse Battery Protection  
General Description  
Features  
The MAX1832–MAX1835 are high-efficiency step-up  
converters with complete reverse battery protection that  
protects the device and the load when the battery is  
reversed. They feature a built-in synchronous rectifier,  
which allows for over 90% efficiency and reduces size  
and cost by eliminating the need for an external  
Schottky diode.  
ꢀ Reverse Battery Protection for DC-DC Converter  
and Load  
ꢀ Up to 90% Efficiency  
ꢀ No External Diode or FETs Needed  
ꢀ Internal Synchronous Rectifier  
ꢀ 4µA Quiescent Current  
These step-up converters operate from a +1.5V to +5.5V  
input voltage range and deliver up to 150mA of load cur-  
rent. The MAX1833EUT/MAX1835EUT (SOT devices)  
have a fixed 3.3V output voltage. The MAX1833ETT30  
(TDFN device) has a fixed 3.0V output voltage. The  
MAX1832/MAX1834 have adjustable outputs from +2V to  
+5.5V. In shutdown, the MAX1832/MAX1833 connect the  
battery input to the voltage output, allowing the input bat-  
tery to be used as a backup or real-time clock supply  
when the converter is off (see Selector Guide).  
ꢀ <1µA Shutdown Supply Current  
ꢀ +1.5V to +5.5V Input Voltage Range  
ꢀ Accurate SHDN Threshold for Low-Battery Cutoff  
ꢀ BATT Connected to OUT in Shutdown for Backup  
Power (MAX1832/MAX1833)  
ꢀ RST Output (MAX1833/MAX1835)  
ꢀ Fixed 3.3V/3.0V Output Voltage  
MAX183_EUT devices are available in a miniature 6-pin  
SOT23 package. The MAX1833ETT30 is available in a  
3mm ✕ 3mm thin DFN package. The MAX1832EVKIT is  
available to speed designs.  
ꢀ Adjustable Output Voltage (MAX1832/MAX1834)  
ꢀ Up to 150mA Output Current  
ꢀ Tiny 6-Pin SOT23 Package  
ꢀ Tiny 6-Pin Thin QFN Package (MAX1833ETT30)  
________________________Applications  
Ordering Information  
Medical Diagnostic Equipment  
Pagers  
Hand-Held Instruments  
Remote Wireless Transmitters  
Digital Cameras  
Cordless Phones  
Battery Backup  
PC Cards  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP RANGE  
MAX1832EUT-T  
MAX1833EUT-T  
MAX1833ETT30-T  
MAX1834EUT-T  
MAX1835EUT-T  
-40 C to +85°C  
-40 C to +85°C  
-40 C to +85°C  
-40 C to +85°C  
-40 C to +85°C  
6 SOT23-6  
6 SOT23-6  
6 TDFN-6  
6 SOT23-6  
6 SOT23-6  
AAOT  
AAOU  
ABX  
AAOV  
AAOW  
Local 3.3V or 5V Supply  
Pin Configurations  
Selector Guide  
OUTPUT  
VOLTAGE  
OUTPUT VOLTAGE  
IN SHUTDOWN  
TOP VIEW  
PART  
MAX1832EUT-T  
MAX1833EUT-T  
MAX1833ETT30-T  
MAX1834EUT-T  
MAX1835EUT-T  
Adjustable  
Fixed 3.3V  
Fixed 3.0V  
Adjustable  
Fixed 3.3V  
V
V
V
BATT  
BATT  
BATT  
SHDN  
BATT  
GND  
1
2
3
6
5
4
FB (RST) SHDN  
1
2
3
6
5
4
RST  
OUT  
LX  
MAX1832  
MAX1834  
(MAX1833EUT)  
(MAX1835)  
MAX1833ETT  
OUT  
LX  
BATT  
GND  
V
V
- 0.7V  
- 0.7V  
BATT  
BATT  
SOT23  
TDFN  
3mm ✕ 3mm  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...12

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与MAX1834相关器件

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MAX1834EUT MAXIM

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 		Switching Regulator, 1A, BICMOS, PDSO6, MO-178AB, SOT-23, 6 PIN
MAX1834EUT ROCHESTER

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 		1 A SWITCHING REGULATOR, PDSO6, MO-178AB, SOT-23, 6 PIN
MAX1834EUT#TG16 MAXIM

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 		Switching Regulator, 1A, BICMOS, PDSO6, ROHS COMPLIANT, MO-178AB, SOT-23, 6 PIN
MAX1834EUT+ MAXIM

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 		Switching Regulator, BICMOS, PDSO6, SOT-23, 6 PIN
MAX1834EUT+T MAXIM

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 		Switching Regulator, BICMOS, PDSO6, SOT-23, 6 PIN
MAX1834EUT-T MAXIM

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 		High-Efficiency Step-Up Converters with Reverse Battery Protection
MAX1834EVKIT MAXIM

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 		622Mbps.3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier[MAX3676/MAX3676E/
MAX1835 MAXIM

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 		High-Efficiency Step-Up Converters with Reverse Battery Protection in SOT23-6
MAX1835 ADI

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 		高效率、升压型转换器，带有反接电池保护
MAX1835EUT ROCHESTER

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 		1 A SWITCHING REGULATOR, PDSO6, MO-178AB, SOT-23, 6 PIN

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