MAX1922
PRODUCTION1A Current-Limited Switch for 2 USB Ports
- Part Models
- 3
- 1ku List Price
- Starting From $1.76
Overview
- Accurate Current Limit (1.4A min, 2.1A max)
- 10ms Internal Active-Low OC Blanking Timeout
- Active-Low OC Blanking During Power-Up
- 125mΩ max High-Side MOSFET
- Short-Circuit and Thermal Protection with Overcurrent Logic Output
- Undervoltage Lockout
- 16µA Quiescent Supply Current
- 1µA (max) Standby Supply Current
- 2.7V to 5.5V Supply Range
- UL® Recognized: UL# E211395
The MAX1922 current-limited 70mΩ switch with built-in fault blanking provides an accurate, preset 1.4A to 2.1A current limit, making it ideal for dual USB applications. Its low quiescent supply current (16µA) and standby current (1µA) conserve battery power in portable applications. The MAX1922 operates with inputs from 2.7V to 5.5V, making it ideal for both 3V and 5V systems.
An overcurrent signal (active-low OC) notifies the microprocessor that the internal current limit has been reached. A 10ms overcurrent-blanking feature allows momentary faults (such as those caused when hot-swapping into a capacitive load) to be ignored, thus preventing false alarms to the host system. This blanking also prevents an active-low OC signal from being issued when the device is powering up.
The MAX1922 has several safety features to ensure that the USB port is protected. Built-in thermal-overload protection limits power dissipation and junction temperature. The device also has accurate internal current-limiting circuitry to protect the input supply against overload.
The MAX1922 is offered in a space-saving 8-pin SO package and a 10-pin TDFN package and operates over the extended (-40°C to +85°) temperature range.
Applications
- Docking Stations
- Notebook Computers
- USB Hubs
- USB Ports
Documentation
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 |
|---|---|---|---|
| MAX1922ESA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX1922ESA+C71073 | Small-Outline IC Narrow (0.15in) | ||
| MAX1922ESA+T | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| MAX1922ESA+ | PRODUCTION | |
| MAX1922ESA+C71073 | PRODUCTION | |
| MAX1922ESA+T | PRODUCTION | |
|
Mar 28, 2018 - 1722F-1 ASSEMBLY |
||
| MAX1922ESA+ | PRODUCTION | |
| MAX1922ESA+C71073 | PRODUCTION | |
| MAX1922ESA+T | PRODUCTION | |
|
Apr 20, 2026 - 2571A PIN/ERRATA |
||
| MAX1922ESA+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 |
|---|---|---|
| Overvoltage & Overcurrent Protectors 2 | ||
| MAX1607 | PRODUCTION | USB Current-Limited Switch in Pin-Compatible Package |
| MAX1694 | PRODUCTION | USB Current-Limited Switches with Fault Blanking |
| Protection Switches & Controllers 1 | ||
| MAX1693 | PRODUCTION | USB Current-Limited Switches with Fault Blanking |
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