Product Descriptions
The LTC4286 is an integrated solution for hot-swap applications allowing a board to be safely inserted and removed from a live backplane. The circuit breaker timer protects against metal-oxide semiconductor field-effect transistor (MOSFET) overheating, enabling reliable protection against overstress.
The SMBus 3.1 interface, PMBus command structure, and onboard analog-to-digital converter (ADC) with selectable averaging and speed allow monitoring of board current, voltage, power, temperature, and fault status.
The LTC4286 has additional features to respond to input undervoltage (UV) and overvoltage (OV): interrupts the host when a fault occurs, notifies when output power is good, detects insertion of a board, and auto-reboot after a programmable delay following a host commanded turn off.
Products Features
? Wide operating voltage range: 8.5 V to 80 V
? Monitors currents, voltages, and power with ADC
? Adjustable, 5 PERCENT accurate current limit: 6 mV to 20 mV
? Current foldback limits MOSFET power dissipation for overstress protection
? Monitors VGS and VDS for MOSFET health
? Peak detect registers for current, voltage, and power
? Reports input or output power
? Remote temperature sensing with programmable warning and shutdown thresholds
? ±1 PERCENT accurate, 12-bit ADC for IOUT, VIN, and VOUT
? Available in 39-lead, 7 mm × 7 mm, QFN package
? Available in 48-lead, 7 mm × 7 mm, QFN package
Products Applications
? High availability server backplane systems
? 12 V/24 V/48 V/54 V Distributed power systems
? Industrial
Specifications
| Attribute | Attribute value |
| ANSM-PART | LTC4286AUK#PBF |
| Category | Integrated Circuits (ICs) |
| Power Management (PMIC) | |
| Hot Swap Controllers | |
| Manufacturer | Analog Devices Inc. |
| Series | - |
| Packaging | Tube |
| Part Status | Active |
| Type | Hot Swap Controller |
| Number of Channels | 1 |
| Internal Switch(s) | - |
| Applications | General Purpose |
| Features | Auto Retry, Fault Timeout, Latched Fault, OVP, SMBus, UVLO |
| Programmable Features | Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO |
| Voltage - Supply | 8.5V ~ 80V |
| Current - Output (Max) | - |
| Operating Temperature | -40°C ~ 125°C |
| Current - Supply | 12 mA |
| Mounting Type | Surface Mount |
| Package / Case | 48-WFQFN Exposed Pad, 39 Leads |
| Supplier Device Package | 48-QFN (7x7) |
Actual product photos
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