MAX4370
PRODUCTIONCurrent-Regulating Hot-Swap Controller with DualSpeed/BiLevel Fault Protection
- Part Models
- 2
- 1ku List Price
- Starting From $5.64
Overview
- DualSpeed/BiLevel Protection During Normal Operation
- Inrush Current Regulated at Start-Up
- Resides Either on the Backplane or on the Removable Card
- Programmable Start-Up Period and Response Time
- Allows Safe Board Insertion and Removal from Live Backplane
- Protection for +3V to +12V Single Supplies
- Latched Off After Fault Condition
- Status Output Pin
- Internal Charge Pump Generates Gate Drive for External N-Channel MOSFET
The MAX4370 is a circuit-breaker IC designed to offer protection in hot-swap applications using Maxim's DualSpeed/BiLevel™ detection. This controller, designed to reside either on the backplane or on the removable card, is used to protect a system from start-up damage when a card or board is inserted into a rack with the main system power supply turned on. The card's discharged filter capacitors provide a low impedance that can momentarily cause the main power supply to collapse. The MAX4370 prevents this start-up condition by providing inrush current regulation during a programmable start-up period, allowing the system to stabilize safely. In addition, two on-chip comparators provide DualSpeed/BiLevel short-circuit protection and overcurrent protection during normal operation.
The MAX4370 provides protection for a +3V to +12V single supply. An internal charge pump generates the controlled gate drive for an external N-channel MOSFET power switch. The MAX4370 latches the switch off after a fault condition until an external reset signal clears the device. Other features include a status pin to indicate a fault condition, an adjustable overcurrent response time, and a power-on reset comparator.
The MAX4370 is specified for the extended-industrial temperature range (-40°C to +85°C) and is available in an 8-pin SO package.
Applications
- Hot Board Insertion
- Solid-State Circuit Breakers
Documentation
Data Sheet 1
Design Note 1
Technical Articles 3
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 |
|---|---|---|---|
| MAX4370ESA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX4370ESA+T | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 28, 2023 - 2361H WAFER FAB |
||
| MAX4370ESA+ | PRODUCTION | |
| MAX4370ESA+T | PRODUCTION | |
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| MAX4370ESA+ | PRODUCTION | |
| MAX4370ESA+T | PRODUCTION | |
|
Apr 20, 2026 - 2571A PIN/ERRATA |
||
| MAX4370ESA+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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