MAX1833EUT+ by Analog Devices

High-Efficiency Step-Up Converters with Reverse Battery Protection

Status: Active
Series: MAX1833
RoHS: Unknown
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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. 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). MAX183_EUT devices are available in a miniature 6-pin SOT23 package. The MAX1833ETT30 is available in a 3mm x 3mm thin DFN package. The MAX1832EVKIT is available to speed designs.

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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 active-low SHDN Threshold for Low-Battery Cutoff
BATT Connected to OUT in Shutdown for Backup Power (MAX1832/MAX1833)
RST-bar 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)

Specifications

VIN (V) (min) 1.5
VIN (V) (max) 5.5
VOUT1 (V) (min) 3.3
VOUT1 (V) (max) 3.3
IOUT1 (A) (max) 0.15
Switch Type Internal
Preset VOUT (V) 3.3
Output Adjust. Method Preset
Synchronous Switching? Yes
IQ (mA) (typ) 0.004
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 500
Package/Pins SOT23/6
BudgetaryPrice (See Notes) 2.43


Frequently Asked Questions

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Is the MAX1833EUT+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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