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MAX1833

Features: Reverse Battery Protection for DC-DC Converter and LoadUp to 90% EfficiencyNo External Diode or FETs NeededInternal Synchronous Rectifier4µA Quiescent Current<1µA Shutdown Supply Current+1.5V to +5.5V Input Voltage RangeAccurate SHDN Threshold for Low-Battery CutoffBATT Co...

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SeekIC No. : 004409358 Detail

MAX1833: Features: Reverse Battery Protection for DC-DC Converter and LoadUp to 90% EfficiencyNo External Diode or FETs NeededInternal Synchronous Rectifier4µA Quiescent Current<1µA Shutdown S...

MAX1833 Data Sheet

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Part Number:
MAX1833
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

 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
 <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
 Adjustable Output Voltage (MAX1832/MAX1834)
 Up to 150mA Output Current
 Tiny 6-Pin SOT23 Package
 Tiny 6-Pin Thin QFN Package (MAX1833ETT30)


Application

Medical Diagnostic Equipment Pagers
Hand-Held Instruments
Remote Wireless Transmitters
Digital Cameras
Cordless Phones
Battery Backup
PC Cards
Local 3.3V or 5V Supply


Pinout

Connection Diagram


Specifications

BATT, LX to GND...........................................................-6V to +6V
LX to OUT ....................................................................-6V to +1V
SHDN to GND.................................................-6V to (VOUT + 0.3V)
OUT, FB, RST TO GND ................................................-0.3V to +6V
LX Current ................................................................................1A
Continuous Power Dissipation (TA = +70°C)
    6-Pin SOT23 (derate 9.1mW/°C above +70°C) ............727mW
    6-Pin 3mm ✕ 3mm TDFN (derate 24.4mW/°C
    above +70°C) ............................................................1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C


Description

The MAX1833 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.

These step-up converters operate from a +1.5V to +5.5V input voltage range and deliver up to 150mA of load current. 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 battery to be used as a backup or real-time clock supply when the converter is off (see Selector Guide).

MAX1833 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.




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