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MAX891LEUA+T
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Product Detailed Parameters
- Description：IC PWR SWITCH P-CHAN 1:1 8UMAX
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Type：General Purpose
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：P-Channel
- Interface：On/Off
- Voltage - Load：2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：500mA
- Rds On (Typ)：120mOhm
- Input Type：Non-Inverting
- Features：Status Flag
- Fault Protection：Current Limiting (Adjustable), Over Temperature
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：8-uMAX/uSOP
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Grade：-
- Qualification：-
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Overview
The MAX891LEUA+T is a current-limited, high-side P-channel power switch designed for load distribution applications. It operates within a voltage range of 2.7V to 5.5V and supports a maximum output current of 500mA. The device features an adjustable current limit and thermal shutdown protection. It utilizes an On/Off interface and requires no supply voltage (Vcc/Vdd). The component is housed in an 8-uMAX or uSOP package with dimensions of 3.00mm width.
Feature Summary
- Integrates adjustable current limiting to protect loads from overcurrent conditions
- Includes thermal shutdown circuitry to prevent damage during overheating events
- Operates as a high-side switch using a P-channel MOSFET topology
- Requires no external supply voltage for control logic operation
Applications
- Portable equipment load switching
- Battery-powered system power distribution
- Peripheral device power management
- High-side switching in low-voltage circuits
Procurement Notes
Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation matches Analog Devices Inc./Maxim Integrated. Ensure the operating temperature range meets the application requirements of -40°C to +85°C. Check for restricted availability status as this part may have limited lifecycle support.
Selection Notes
Select this component for applications requiring a compact, high-side P-channel switch with built-in protection. The 500mA current rating suits moderate load requirements. The absence of a required Vcc simplifies control interface design. Consider the 8-pin µMAX package size for space-constrained PCB layouts.
Part Context
This part belongs to the Maxim Integrated power switch family, focusing on single-channel load drivers. It serves as a protective element in power distribution networks, replacing discrete MOSFETs and protection diodes in a single integrated solution. The device is categorized under PMIC - Power Distribution Switches.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing control signals and thermal requirements before considering alternative components.
