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MAX4820ETP+T
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Product Detailed Parameters
- Description：IC PWR DRIVER N-CHAN 1:8 20TQFN
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Type：Relay, Solenoid Driver
- Number of Outputs：8
- Ratio - Input:Output：1:08
- Output Configuration：Low Side
- Output Type：N-Channel
- Interface：SPI
- Voltage - Load：2.3V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：-
- Current - Output (Max)：70mA
- Rds On (Typ)：2Ohm
- Input Type：-
- Features：-
- Fault Protection：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Supplier Device Package：20-TQFN (4x4)
- Package / Case：20-WFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The MAX4820ETP+T is an eight-channel, low-side relay driver manufactured by Analog Devices Inc. under the Maxim Integrated brand. Designed for +3.3V and +5V systems, it integrates cascading capability to simplify multi-relay control architectures. The device operates within a supply voltage range of 2.3V to 5.5V and delivers a continuous output current of 70mA per channel. It features serial and parallel interface options for flexible system integration. Packaged in a 20-pin QFN-EP with an exposed pad for thermal management, it supports surface-mount installation and functions reliably across an industrial temperature range from -40°C to +85°C.
Feature Summary
- Integrates eight independent low-side drivers for direct relay actuation
- Supports cascading architecture to reduce pin count in multi-channel designs
- Offers dual interface flexibility via serial or parallel control modes
- Includes exposed thermal pad for enhanced heat dissipation in compact layouts
Applications
- Industrial automation control panels requiring multiple relay switching
- Telecommunications equipment signal routing and power management
- Automotive body electronics and lighting control modules
- Consumer appliances with complex electromechanical actuation needs
Procurement Notes
Verify the exact suffix configuration against the manufacturer datasheet to ensure compatibility with specific interface requirements and packaging preferences. Confirm RoHS compliance status and lead times through authorized distributors, as availability may vary by region. Cross-reference the part number with official Analog Devices documentation to validate electrical specifications and operating conditions before procurement.
Selection Notes
Select this component when designing systems requiring isolated control of multiple relays with minimal microcontroller I/O usage. The cascading feature makes it suitable for space-constrained applications where board real estate is limited. Ensure the load current does not exceed the 70mA per channel limit and that the supply voltage remains within the specified 2.3V to 5.5V range for reliable operation.
Part Context
This device belongs to the MAX4820 family of relay drivers, which are optimized for low-power, high-density switching applications. The ETP suffix indicates a specific tape-and-reel packaging variant within the TQFN-EP-20 form factor. It complements other Maxim Integrated power management solutions by providing dedicated, robust switching capabilities for electromechanical loads in mixed-signal environments.
Replacement Considerations
Consult the official Analog Devices replacement matrix for verified cross-reference parts. Ensure any substitute maintains identical pinout, voltage ratings, and current handling capabilities. Verify interface compatibility if replacing in existing designs to avoid schematic modifications.
