MAX1947ETA25+T

Obsolete

Analog Devices Inc./Maxim Integrated

LOW INPUT/OUTPUT VOLTAGE STEP-UP DC-DC CONVERTER WITH ACTIVE-LOW RESET

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MAX1947ETA25+T

Obsolete

Analog Devices Inc./Maxim Integrated

LOW INPUT/OUTPUT VOLTAGE STEP-UP DC-DC CONVERTER WITH ACTIVE-LOW RESET

Find alt

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Description Specifications Series Pricing CAD Documents

Description

General part information

MAX1947 Series

The MAX1947 is a compact, high-efficiency, step-up DC-DC converter that regulates output voltages from 1.8V to 3.3V to power µP/DSP cores, memory, and I/O rails in 1-and 2-cell alkaline/NiMH/NiCd battery-powered systems. It features an internal 800mA switch and synchronous rectifier to achieve up to 94% efficiency and to eliminate the need for an external Schottky diode.High-frequency switching (up to 2MHz) results in low ripple and small external components, while automatic pulse skipping at light loads reduces supply current to just 70µA for extended battery life. Maxim's proprietary True Shutdown™ reduces supply current to just 2µA and fully discharges the output to ground. The converter is offered in fixed-output voltages of 1.8V, 2.5V, 3.0V, and 3.3V, requiring no feedback or compensation network. A 75ms active-low RESET output flag provides for power-on reset (POR) and undervoltage detection. The MAX1947 is available in a space-saving 8-pin TDFN package.ApplicationsCordless PhonesDigital Still CamerasMP3 Players, Pagers, and CD PlayersOther Battery-Powered SystemsPDAs and OrganizersPortable Medical EquipmentWireless Mice/Keyboards

Technical Specifications

Parameters and characteristics for this part

Specification	MAX1947ETA25+T

Current - Output	214 mA
Frequency - Switching (Max)	2 MHz
Function	Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Fixed
Package / Case	8-WDFN Exposed Pad
Package Length	3 mm
Package Name	8-TDFN
Package Width	3 mm
Synchronous Rectifier	Yes
Topology	Boost
Voltage - Input (Max)	3.6 V
Voltage - Input (Min)	0.7 V
Voltage - Output (Min/Fixed)	2.5 V

MAX1947 Series

Part	Voltage - Input (Max)	Topology	Mounting Type	Number of Outputs	Current - Output	Operating Temperature (Max)	Operating Temperature (Min)	Output Configuration	Voltage - Output (Min/Fixed)	Output Type	Frequency - Switching (Max)	Package / Case	Voltage - Input (Min)	Function	Package Width	Package Name	Package Length	Synchronous Rectifier
Analog Devices Inc./Maxim Integrated MAX1947ETA30+T	3.6 V	Boost	Surface Mount	1	185 mA	85 °C	-40 °C	Positive	3 V	Fixed	2 MHz	8-WDFN Exposed Pad	0.7 V	Step-Up	3 mm	8-TDFN	3 mm	Yes
Analog Devices Inc./Maxim Integrated MAX1947ETA18+T	3.6 V	Boost	Surface Mount	1	273 mA	85 °C	-40 °C	Positive	1.8 V	Fixed	2 MHz	8-WDFN Exposed Pad	0.7 V	Step-Up	3 mm	8-TDFN	3 mm	Yes
Analog Devices Inc./Maxim Integrated MAX1947ETA33+T	3.6 V	Boost	Surface Mount	1	169 mA	85 °C	-40 °C	Positive	3.3 V	Fixed	2 MHz	8-WDFN Exposed Pad	0.7 V	Step-Up	3 mm	8-TDFN	3 mm	Yes
Analog Devices Inc./Maxim Integrated MAX1947ETA18+
Analog Devices Inc./Maxim Integrated MAX1947ETA25+T	3.6 V	Boost	Surface Mount	1	214 mA	85 °C	-40 °C	Positive	2.5 V	Fixed	2 MHz	8-WDFN Exposed Pad	0.7 V	Step-Up	3 mm	8-TDFN	3 mm	Yes
Analog Devices Inc./Maxim Integrated MAX1947ETA25+

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MAX1947: Low Input/Output Voltage Step-Up DC-DC Converter with Active-Low RESET Data Sheet (Rev.2)

Package Drawing - Thin Dual Flatpack No Leads, Exposed Pad