MAX891L
PRODUCTIONCurrent-Limited, High-Side P-Channel Switches with Thermal Shutdown
Low-Resistance P-Channel Switches with Adjustable, Accurate Current Limit Protects Systems and USB
- Part Models
- 2
- 1ku List Price
- Starting From $2.69
Overview
- Ultra-Small µMAX Package-Only 1.11mm High
- 2.7V to 5.5V Input Range
- Programmable Current Limit
- Low 13µA Quiescent Current at VIN = 3.3V, 0.1µA Switch Off
- Thermal Shutdown
- FAULT-bar Indicator Output
- On-Resistances:
- 0.12Ω (MAX891L)
- 0.25Ω (MAX892L)
The MAX891L/MAX892L smart, low-voltage, P-channel, MOSFET power switches are intended for high-side load-switching applications. These switches operate with inputs from 2.7V to 5.5V, making them ideal for both 3V and 5V systems. Internal current-limiting circuitry protects the input supply against overload. Thermal-overload protection limits power dissipation and junction temperatures.
The MAX891L/MAX892L's maximum current limits are 500mA and 250mA, respectively. The current limit through the switch is programmed with a resistor from SET to ground. When the switch is on, the quiescent supply current is a low 13µA. When the switch is off, the quiescent current decreases to 0.1µA.
The MAX891L/MAX892L are available in 8-pin µMAX® packages.
Applications
- Access Bus Slots
- PCMCIA Slots
- Portable Equipment
Documentation
Data Sheet 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX891LEUA+ | Micro-MAX, Thin Shrink Small-Outline | ||
| MAX891LEUA+T | Micro-MAX, Thin Shrink Small-Outline |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571B PIN/ERRATA |
||
| MAX891LEUA+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| MOSFET & Gate Drivers 1 | ||
| MAX890L | PRODUCTION | 1.2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown |
| Overvoltage & Overcurrent Protectors 2 | ||
| MAX869L | PRODUCTION | 2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown |
| MAX894L | PRODUCTION | Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown |