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MIC2564A-1YSM
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CHAN 3:4 24SSOP
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Switch Type：PCMCIA Switch
- Number of Outputs：4
- Ratio - Input:Output：3:04
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：Serial
- Voltage - Load：3.3V, 5V, 12V
- Voltage - Supply (Vcc/Vdd)：-
- Current - Output (Max)：120mA
- Rds On (Typ)：1.3Ohm
- Input Type：Non-Inverting
- Features：Status Flag
- Fault Protection：Current Limiting (Fixed), Over Temperature
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：24-SSOP
- Package / Case：24-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The MIC2564A-1YSM is a discontinued power switch and driver IC manufactured by Microchip Technology. It features four N-channel outputs with a 3:4 input-to-output ratio, designed for PCMCIA and CardBus applications. The device supports load voltages of 3.3V, 5V, and 12V, delivering a maximum output current of 120mA per channel. It operates within a temperature range of -40°C to 85°C (TA) and includes fixed current limiting and overtemperature fault protection. The component is housed in a 24-SSOP package.
Feature Summary
- Provides independent control for up to four high-side power switches via serial interface
- Integrates status flag reporting for monitoring operational states
- Includes built-in fixed current limiting and overtemperature protection mechanisms
Applications
- PCMCIA power controller circuits
- CardBus power distribution systems
- Dual-slot PC Card power management
Procurement Notes
This component is officially marked as obsolete and no longer manufactured by Microchip Technology. Verification of availability should focus on authorized distributors or secondary market suppliers rather than direct manufacturer stock. Buyers must confirm the specific revision and lot date when sourcing from non-primary channels to ensure compatibility with existing designs.
Selection Notes
Designers requiring this functionality should evaluate replacement options due to the part's end-of-life status. Considerations include verifying pin compatibility and ensuring that substitute components support the required 3:4 input-to-output ratio and serial interface protocol. Thermal performance under the specified load conditions must be validated against alternative devices.
Part Context
The MIC2564A belongs to a series of power controllers specifically engineered for legacy computing standards such as PCMCIA and CardBus. These devices facilitate efficient power distribution in portable electronics where multiple voltage rails are required. The 24-SSOP packaging allows for compact integration into space-constrained motherboards and expansion cards.
Replacement Considerations
Public confirmed substitute part number: TPS2224ADB (Texas Instruments). This alternative is listed as similar but requires verification of functional equivalence regarding the 3:4 ratio and serial interface compatibility.
