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Part Number: MAX1759
Description: The MAX1759 is a buck/boost regulating charge pump that generates a regulated output voltage from a si...
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MAX1759
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DataSheet
General Description
MAX1759 General Description
The MAX1759 is a buck/boost regulating charge pump that generates a regulated output voltage from a single lithium-ion (Li+) cell, or two or three NiMH or alkaline cells for small hand-held portable equipment. The MAX1759 operates over a wide +1.6V to +5.5V input voltage range and generates a fixed 3.3V or adjustable (2.5V to 5.5V) output (Dual Mode™). Maxim's unique charge-pump architecture allows the input voltage to be higher or lower than the regulated output voltage.
Despite its high 1.5MHz operating frequency, the MAX1759 maintains low 50A quiescent supply current.Designed to be an extremely compact buck/boost converter, this device requires only three small ceramic capacitors to build a complete DC-DC converter capable of generating a guaranteed 100mA (min) output current from a +2.5V input. For added flexibility, the MAX1759 also includes an open-drain power-OK (POK) output that signals when the output voltage is in regulation.
The MAX1759 is available in a space-saving 10-pin MAX package that is 1.09mm high and half the size of an 8-pin SO.
MAX1759 Maximum Ratings
IN, OUT, FB, POK, SHDN to GND............................-0.3V to +6V
PGND to GND..................................................................±0.3V
CXN to GND .............................................-0.3V to (VIN + 0.3V)
CXP to GND...........................................-0.3V to (VOUT + 0.3V)
OUT Short to GND.....................................................Indefinite
Continuous Power Dissipation (TA = +70°C)
10-Pin MAX (derate 5.6mW/°C above +70°C) ......444mW
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.
MAX1759 Features
` Regulated Output Voltage (Fixed 3.3V or Adjustable 2.5V to 5.5V)
` 100mA Guaranteed Output Current
` +1.6V to +5.5V Input Voltage Range
` Low 50A Quiescent Supply Current
` 1A Shutdown Mode
` Load Disconnected from Input in Shutdown
` High 1.5MHz Operating Frequency
` Uses Small Ceramic Capacitors
` Short-Circuit Protection and Thermal Shutdown
` Small 10-Pin MAX Package
` 100mA Guaranteed Output Current
` +1.6V to +5.5V Input Voltage Range
` Low 50A Quiescent Supply Current
` 1A Shutdown Mode
` Load Disconnected from Input in Shutdown
` High 1.5MHz Operating Frequency
` Uses Small Ceramic Capacitors
` Short-Circuit Protection and Thermal Shutdown
` Small 10-Pin MAX Package
MAX1759 Typical Application
Li+ Battery-Powered Applications
Miniature Equipment
Backup Battery Boost Converters
Translators
Miniature Equipment
Backup Battery Boost Converters
Translators
MAX1759 Connection Diagram
MAX1759
PDF/DataSheet Download
- Datasheet: MAX1759
- File Size: 201005 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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