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Part Number: MAX8569B
Description: The MAX8569A/MAX8569B low-quiescent-current boost regulators provide up to 200mA at output voltages up...
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MAX8569B
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DataSheet
General Description
MAX8569B General Description
The MAX8569A/MAX8569B low-quiescent-current boost regulators provide up to 200mA at output voltages up to 5.5V from a 1.5V to 5.5V input source. The built-in synchronous rectifier allows for over 90% efficiency while achieving small size and low cost by eliminating the need for an external Schottky diode.
The MAX8569A provides an adjustable output while the MAX8569B is fixed at 3.0V or 3.3V. The MAX8569B features a power-on reset output (RST) to signal that the output has reached regulation. All devices connect the battery input to the output during shutdown, allowing the input battery to be used as a backup or real-time clock supply when the converter is off.
MAX8569B Maximum Ratings
BATT, LX, OUT, FB, RST to GND ..............................-0.3V to +6V
SHDN to GND...........................................-0.3V to (VOUT + 0.3V)
LX Current .................................................................1.5A Peak
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C).........727mW
6-Pin TDFN 3mm x 3mm
(derate 18.2mW/°C above +70°C)..........................1454mW
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
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
MAX8569B Features
` Over 200mA Available Output Current
` 1.5V to 5.5V Input Voltage Range
` BATT Connected to OUT in Shutdown for Backup Power
` Up to 95% Efficiency
` 7A Typical Quiescent Current
` <1A Shutdown Supply Current
` Internal Synchronous Rectifier
` 750mA Switch Current Limit
` RST Output (MAX8569B)
` Adjustable Output Voltage (MAX8569A)
` Fixed 3.0V or 3.3V Output Voltage (MAX8569B)
` 1.5V to 5.5V Input Voltage Range
` BATT Connected to OUT in Shutdown for Backup Power
` Up to 95% Efficiency
` 7A Typical Quiescent Current
` <1A Shutdown Supply Current
` Internal Synchronous Rectifier
` 750mA Switch Current Limit
` RST Output (MAX8569B)
` Adjustable Output Voltage (MAX8569A)
` Fixed 3.0V or 3.3V Output Voltage (MAX8569B)
MAX8569B Typical Application
·Medical Diagnostic
·Equipment
·Digital Cameras
·PDAs and Smartphones
·Cordless Phones
·Battery Backup
·PC Cards
·Local 3.3V or 5V Supply
·Equipment
·Digital Cameras
·PDAs and Smartphones
·Cordless Phones
·Battery Backup
·PC Cards
·Local 3.3V or 5V Supply
MAX8569B Connection Diagram
MAX8569B
PDF/DataSheet Download
- Datasheet: MAX8569B
- File Size: 364544 KB
- Manufacturer: MAXIM
- Click here to Download
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