MAX5948B
PRODUCTION-48V Hot-Swap Controllers with External RSENSE
- Part Models
- 1
- 1ku List Price
- Starting From $2.94
Overview
- Allow Safe Board Insertion and Removal from a Live -48V Backplane
- Pin- and Function-Compatible with LT1640AL/LT1640L (MAX5948A)
- Pin- and Function-Compatible with LT1640AH/LT1640H (MAX5948B)
- Withstand -100V Input Transients with No External Components
- Operate from -20V to -80V
- Programmable Inrush and Short-Circuit Current Limits
- Programmable Overvoltage Protection
- Programmable Undervoltage Lockout
- Power Up into a Shorted Load
- Power-Good Control Output
The MAX5948A/MAX5948B are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane. The MAX5948A/MAX5948B operate from -20V to -80V and are well-suited for -48V power systems. The MAX5948A is pin- and function-compatible with both the LT1640AL and LT1640L. The MAX5948B is pin- and function-compatible with both the LT1640AH and LT1640H.
The MAX5948A/MAX5948B provide a controlled turn-on to circuit cards preventing glitches on the power-supply rail and damage to board connectors and components. The MAX5948A/MAX5948B provide undervoltage, overvoltage, and overcurrent protection. These devices ensure the input voltage is stable and within tolerance before applying power to the load.
Both the MAX5948A and MAX5948B protect a system against overcurrent and short-circuit conditions by turning off the external MOSFET in the event of a fault condition.
Both devices feature an open-drain power-good status output, active-low PWRGD for MAX5948A or PWRGD for MAX5948B, that can be used to enable downstream converters.
The MAX5948A/MAX5948B are available in an 8-pin SO package. Both devices are specified for the extended -40°C to +85°C temperature range.
Applications
- Base-Station Line Cards
- Central-Office Switching
- Network Routers and Switches
- Server Line Cards
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 |
|---|---|---|---|
| MAX5948BESA+ | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| MAX5948BESA+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Hot Swap Controllers 3 | ||
| MAX5920 | PRODUCTION | -48V Hot-Swap Controller with External RSENSE |
| MAX5921 | PRODUCTION | -48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current |
| MAX5939 | PRODUCTION | -48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current |
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