Product Summary
The MAX845ESA provides an isolated power supply small enough to fit in thin PCMCIA cards and space-sensitive applications. MAX845ESA drives a low-profile center-tapped transformer primary from a 5V or 3.3V DC power supply. The secondary can be wound to provide any isolated positive or negative voltage at powers up to 750mW. The MAX845ESA consists of an oscillator followed by a toggle flip-flop. The flip-flop generates two 50% duty-cycle square waves, which are complementary at half the oscillator frequency (450kHz, min).
Parametrics
MAX845ESA absolute maximum ratings: (1)Supply Voltage (VCC): -0.3V to +7V; (2)Control Input Voltage (SD, FS): -0.3V to (VCC + 0.3V); (3)Peak Output Switch Current (D1, D2): 1A; (4)Output Switch Voltage (D1, D2): 12V; (5)Average Output Switch Current (D1, D2): 200mA; (6)Operating Temperature Range: -40℃ to +85℃; (7)Storage Temperature Range: -65℃ to +160℃; (8)Junction Temperature: +150℃; (9)Lead Temperature (soldering, 10sec): +300℃.
Features
MAX845ESA features: (1)Transformer Driver for Ultra-Thin 5V-μs Transformers; (2)Isolated DC-to-DC Power Supply for PCMCIA Applications; (3)450kHz Minimum Switching Frequency; (4)Ultra-Low Input Supply Current Ripple; (5)Single +5V or +3.3V Supply; (6)5μW Low-Power Shutdown Mode; (7)8-Pin SO and μMAX Packages; (8)Low Output Ripple Permits Miniature Output Capacitors.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
Quantity | |||||||||||||
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MAX845ESA |
Maxim Integrated Products |
Power Driver ICs |
Data Sheet |
Negotiable |
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MAX845ESA/GH9 |
Maxim Integrated Products |
Power Driver ICs |
Data Sheet |
Negotiable |
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MAX845ESA+T |
Maxim Integrated Products |
Power Driver ICs Isolated Transformer Driver for PCMCIA |
Data Sheet |
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MAX845ESA+ |
Maxim Integrated Products |
Power Driver ICs Isolated Transformer Driver for PCMCIA |
Data Sheet |
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MAX845ESA/GH9-T |
Maxim Integrated Products |
Power Driver ICs |
Data Sheet |
Negotiable |
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MAX845ESA-T |
Maxim Integrated Products |
Power Driver ICs |
Data Sheet |
Negotiable |
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