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MIC2568-0BSM Datasheet(PDF) 1 Page - MIC GROUP RECTIFIERS |
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MIC2568-0BSM Datasheet(HTML) 1 Page - MIC GROUP RECTIFIERS |
1 / 10 page May 2003 1 MIC2568 MIC2568 Micrel MIC2568 Dual-Slot PC Card/CardBus Power Controller Preliminary General Description The MIC2568 dual-slot PC Card / CardBus power controller is a V CC and VPP power switch matrix that supports 3.3V and 5V PC Card (PCMCIA) slot power supply pins. The MIC2568 can switch PC Card slot V CC voltages between 0V (ground), 3.3V and 5.0V and V PP voltages between 0V (ground), 3.3V, 5V, or high impedance at output currents of up to 1A for V CC and 250mA for VPP. The MIC2568 features well-controlled voltage rise and fall times. Each MIC2568 output voltage is switched by two digital inputs, typically controlled from a separate PC Card logic controller. The MIC2568 is designed for efficient operation. In standby (sleep) mode the device draws very little quiescent current, typically only 0.3 µA. The power controller includes thermal shutdown and protects itself and its PC Card ports with current limiting. Full cross-conduction lockout protects the system power supplies. The MIC2568 is available in 28-pin SSOP and TSSOP packages. Typical Application MIC2568 Power Controller GND AVCC3 IN A VCC5 IN (OPTIONAL) 3.3V (OPTIONAL) 5V System Power Supply Dual-Slot PC Card Logic Controller AVPP OUT AVCC OUT BVPP OUT BVCC OUT PC Card A VPP1 VPP2 VCC PC Card B VPP1 VPP2 VCC Motherboard Slot A Slot B Address and data lines between logic controller and PCMCIA cards not shown. A EN1 A EN0 AVCC5 EN AVCC3 EN B EN1 B EN0 BVCC5 EN BVCC3 EN BVCC3 IN (OPTIONAL) BVCC5 IN VCC VCC Independent supply inputs can be used with two system power supplies. (Single system supply shown.) Dual-Slot PC Card Power Control Features • Complete single-chip dual-slot power switch • No external components required • Output current limit and thermal shutdown • Ultra-low power consumption • Compatible with standard PC Card logic controllers • Break-before-make switching (no transients) • Digital V CC and VPP voltage selection • > 1A V CC output current per slot • > 200mA V PP output current per slot • 28-pin SSO and TSSO package • Pb-free 28-pin SSO package • UL recognized, file #179633 Applications • Dual-slot PC Card power supply voltage switch • CardBus slot power supply control • Data collection systems • Machine control data input systems • Wireless communications • Bar code data collection systems • Instrumentation configuration/datalogging • Portable and desktop computer docking stations • Power supply management • Power analog switching Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com UL Recognized Component |
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