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Part Number: MAX608
Description: The MAX608 low-voltage step-up controller operates from a 1.8V to 16.5V input voltage range. Pulse-frequency modulat...
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MAX608
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General Description
MAX608 General Description
The MAX608 low-voltage step-up controller operates from a 1.8V to 16.5V input voltage range. Pulse-frequency modulation (PFM) control provides high efficiency at heavy loads, while using only 85A (typical) when operating with no load. In addition, a logic-controlled shutdown mode reduces supply current to 2A typical. The output voltage is factory-set at 5V or can be adjusted from 3V to 16.5V with an external resistor divider.
The MAX608 is ideal for two- and three-cell batterypowered systems. An operating frequency of up to 300kHz allows use with small surface-mount components.
The MAX608 operates in "bootstrapped" mode only (with the chip supply, OUT, connected to the DC-DC output). For a 12V output without external resistors, or for nonbootstrapped applications (chip supply connected to input voltage), refer to the pin-compatible MAX1771. The MAX608 is available in 8-pin DIP and SO packages.
MAX608 Maximum Ratings
Supply Voltage
OUT to GND.................................................................-0.3V, 17V
EXT, CS, REF, SHDN, FB to GND ..................-0.3V, (VOUT + 0.3V)
GND to AGND..............................................................0.1V, -0.1V
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
Operating Temperature Range ........................-40°C to +85°C
Junction Temperature.....................................................+150°C
Storage Temperature Range ..........................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300°C
OUT to GND.................................................................-0.3V, 17V
EXT, CS, REF, SHDN, FB to GND ..................-0.3V, (VOUT + 0.3V)
GND to AGND..............................................................0.1V, -0.1V
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
Operating Temperature Range ........................-40°C to +85°C
Junction Temperature.....................................................+150°C
Storage Temperature Range ..........................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300°C
MAX608 Features
1.8V to 16.5V Input Range
85% Efficiency for 30mA to 1.5A Load Currents
Up to 10W Output Power
110A Max Supply Current
5A Max Shutdown Current
Preset 5V or Adjustable Output (3V to 16.5V)
Current-Limited PFM Control Scheme
Up to 300kHz Switching Frequency
Evaluation Kit Available
85% Efficiency for 30mA to 1.5A Load Currents
Up to 10W Output Power
110A Max Supply Current
5A Max Shutdown Current
Preset 5V or Adjustable Output (3V to 16.5V)
Current-Limited PFM Control Scheme
Up to 300kHz Switching Frequency
Evaluation Kit Available
MAX608 Typical Application
High-Efficiency DC-DC Converters
Battery-Powered Applications
Positive LCD-Bias Generators
Portable Communicators
Battery-Powered Applications
Positive LCD-Bias Generators
Portable Communicators
MAX608 Connection Diagram
MAX608
PDF/DataSheet Download
- Datasheet: MAX608
- File Size: 139283 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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