MAX5900
PRODUCTION-100V, SOT23/TDFN, Simple Swapper Hot-Swap Controllers
- Part Models
- 12
- 1ku List Price
- Starting From $3.11
Overview
- Wide -9V to -100V Operation
- Requires No External Sense Resistor
- Drives External N-Channel MOSFET
- Limits Inrush Current
- Circuit-Breaker Function
- Less than 1mA Quiescent Current
- ON/Active-Low OFF Input Permits Load Power-Supply Control and Sequencing
- Adjustable Undervoltage Lockout
- Power-Good Output with 100V Rating
- Latching or Automatic Retry Fault Management
- Thermal Shutdown Helps Protect the External MOSFET
- Space-Saving 6-Pin SOT23 and TDFN Packages
The MAX5900/MAX5901 are SOT23/TDFN hot-swap controllers that allow a circuit card to be safely hot-plugged into a live backplane without causing a glitch on the power-supply rail. These devices operate from -9V to -100V and provide the simplest hot-swap solution by eliminating all external components except an external n-channel MOSFET.
The MAX5900/MAX5901 limit the inrush current to the load and provide a circuit-breaker function for overcurrent protection. During startup, the circuit-breaker function is disabled and the MAX5900/MAX5901 limit the inrush current by gradually turning on the external MOSFET. Once the external MOSFET is fully enhanced, the circuit-breaker function is enabled and the MAX5900/MAX5901 provide overcurrent protection by monitoring the voltage drop across the external MOSFET's on-resistance.
The MAX5900/MAX5901 include an undervoltage lockout (UVLO) function, ON/active-low OFF control input, and a powergood status output, active-low PGOOD (MAX5900) or PGOOD (MAX5901). A built-in thermal shutdown feature is also included to protect the external MOSFET in case of overheating.
The MAX5900/MAX5901 offer latched or autoretry fault management and are available with 200mV, 300mV, or 400mV circuit-breaker thresholds. Both the MAX5900 and MAX5901 are available in small SOT23 and TDFN packages, and are specified for the extended -40°C to +85°C temperature range. For specific ordering information see the Selector Guide at the end of the data sheet.
Applications
- Base-Station Line Cards
- Network Hubs, Switches, Routers
- Servers
- Telecom Line Cards
Documentation
Data Sheet 1
Technical Articles 5
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 |
|---|---|---|---|
| MAX5900AAEUT+ | SOT_23 | ||
| MAX5900AAEUT+T | SOT_23 | ||
| MAX5900ABETT+ | Thin Dual Flatpack No Leads, Exposed Pad | ||
| MAX5900ABETT+T | Thin Dual Flatpack No Leads, Exposed Pad | ||
| MAX5900ABEUT+ | SOT_23 | ||
| MAX5900ABEUT+T | SOT_23 | ||
| MAX5900ACEUT+ | SOT_23 | ||
| MAX5900ACEUT+T | SOT_23 | ||
| MAX5900LBEUT+ | SOT_23 | ||
| MAX5900LBEUT+T | SOT_23 | ||
| MAX5900NNEUT+ | SOT_23 | ||
| MAX5900NNEUT+T | SOT_23 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 2, 2025 - 2505 PIN/ERRATA |
||
| MAX5900ABETT+ | PRODUCTION | |
|
Jun 20, 2016 - 1612 ASSEMBLY |
||
| MAX5900ABETT+ | PRODUCTION | |
| MAX5900ABETT+T | PRODUCTION | |
|
Apr 20, 2026 - 2571D PIN/ERRATA |
||
| MAX5900ABETT+T | PRODUCTION | |
|
Apr 20, 2026 - 2571C PIN/ERRATA |
||
| MAX5900ABEUT+T | PRODUCTION | |
| MAX5900ACEUT+T | PRODUCTION | |
| MAX5900LBEUT+ | PRODUCTION | |
| MAX5900NNEUT+ | PRODUCTION | |
| MAX5900NNEUT+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.