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MAX1940EEE
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Product Detailed Parameters
- Description：TRIPLE USB SWITCH WITH AUTORESET
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Switch Type：USB Switch
- Number of Outputs：3
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：On/Off
- Voltage - Load：4V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：500mA, 500mA, 500mA
- Rds On (Typ)：85mOhm
- Input Type：Non-Inverting
- Features：Status Flag
- Fault Protection：Current Limiting (Fixed), Over Load, Over Temperature, Short Circuit, UVLO
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Supplier Device Package：16-QSOP
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Grade：-
- Qualification：-
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Overview
The MAX1940EEE is a triple USB current-limited switch manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4V to 5.5V and supports an operating temperature range from -40°C to +85°C. The device is housed in a 16-pin QSOP package. Key electrical characteristics include a fixed current limit, autoreset functionality, and built-in fault blanking circuitry designed to protect downstream loads.
Feature Summary
- Integrates three independent high-side switches for USB power distribution
- Features autoreset capability to restore system power after fault clearance
- Includes built-in 20ms fault blanking circuitry to prevent nuisance tripping
Applications
- USB hub power management
- Portable computer peripheral protection
- Consumer electronics USB port safeguarding
Procurement Notes
Verify the specific suffix (e.g., EEE vs EEE+) against official datasheets to confirm RoHS compliance and exact pinout configuration. Confirm availability status with authorized distributors as lead times may vary. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.
Selection Notes
Select this component when triple-channel USB protection is required within a compact QSOP footprint. Consider the 4V to 5.5V input range and fixed current limit settings. Evaluate the autoreset feature benefits against applications requiring manual reset mechanisms. Verify compatibility with upstream power sources and downstream load requirements.
Part Context
This part belongs to the Maxim Integrated USB switch family, designed for overcurrent protection in USB systems. It complements other power management ICs by providing localized fault isolation. The QSOP-16 package allows for space-constrained designs in mobile and desktop computing platforms requiring robust USB port protection.
Replacement Considerations
Cross-reference with MAX1940EEE+ for RoHS-compliant versions. Check for updated series members with integrated fault flags or different current limit values if system requirements change.
