company blog about Mingjiada Electronics Supply TI LM5066 10V To 80V Hot Swap Controller With PMBus Interface

Mingjiada Electronics Supply TI LM5066 10V To 80V Hot Swap Controller With PMBus Interface

In servers, data centres, telecommunications base stations, industrial backplanes and high-reliability power supply systems, hot-swap controllers are key components that ensure the safe insertion and removal of boards, limit inrush current and provide fault protection. The Texas Instruments (TI) LM5066, a 10–80V hot-swap controller, not only handles inrush current limiting and fault protection but also provides precise telemetry—including voltage, current, power and temperature—via PMBus/I²C, making it suitable for high-availability power supply system designs.

Shenzhen Mingjiada Electronics Co., Ltd. — a long-standing supplier of the [TI] LM5066 hot-swap controller. This series is specifically designed for 10V–80V high-voltage backplane hot-swap applications, integrating power protection and high-precision telemetry functions to ensure safe hot-swapping of backplanes. Mingjiada Electronics currently supplies genuine TI LM5066 parts; we can provide BOM fulfilment support for R&D prototyping, small-batch trial production and bulk stocking.

What is the LM5066?
The LM5066 is a hot-swap/power management controller from TI, housed in a 28-pin HTSSOP (PWP) package. It features an external MOSFET architecture, operates at voltages ranging from 10V to 80V, and has a continuous absolute maximum voltage of 100V.
It combines two key capabilities: ‘protection’ and ‘monitoring’:
Power-on surge control (Soft Start)
Overcurrent, short-circuit, overvoltage and undervoltage protection
FET Safe Operating Area (SOA) protection
Real-time power status reporting via PMBus

LM5066 Key Specifications:
Function Type: Hot-swap controller + power monitoring
Operating Voltage: 10V – 80V
Continuous Absolute Maximum Voltage: 100V
Number of Channels: 1 channel (external FET)
Current-Limit Threshold: 26 mV / 50 mV (±10 per cent)
Interfaces: I²C / SMBus / PMBus
ADC: 12-bit, 1 kHz sampling
Monitoring Accuracy: V ±1.25 per cent / I ±1.75 per cent / P ±2.5 per cent
Protection functions: OVP, UVLO, overcurrent, short circuit, FET SOA, overtemperature
Fault response: Automatic retry / latch-off
Package: HTSSOP-28 (PWP)
Operating temperature: –40°C to 125°C

LM5066 Key Features:
10 to 80 V operating voltage
100 V continuous absolute maximum
26 mV or 50 mV ILIM threshold (±10 per cent)
Programmable FET Safe Operating Area (SOA) protection
Programmable under-voltage (UV), over-voltage (OV) and temperature fault (tFAULT) thresholds
External FET temperature sensing
FET fault detection
I²C / SMBus interface
Command structures compliant with PMBus and Node Manager 2.0 and 3.0 standards
High-precision VIN, VOUT, IIN, PIN and VAUX monitoring
V (±1.25%); I (±1.75%); P (±2.5%)
Supports energy monitoring via the Read_EIN command
Programmable I/V/P averaging interval
12-bit ADC with a sampling rate of 1 kHz
Operating temperature range: –40°C < TJ < 125°C

The LM5066 hot-swap controller is widely used in:
48V servers
Base station power distribution
Network routers and switches
PLC power management
24 to 28 V industrial systems

With its integrated I²C/PMBus interface, comprehensive protection features and intelligent telemetry capabilities, the TI LM5066 hot-swap controller is the ideal choice for hot-swap management in server, communications and industrial power supply systems. Mingjiada Electronics maintains a continuous supply of the LM5066IPMHX and the full range of TI hot-swap controllers. We welcome all customers to contact us for real-time stock availability, pricing, samples and technical documentation.
Company URL: https://www.integrated-ic.com/
Tags: LM5066IPMHX, LM5066IPMH, LM5066IPM, LM5066IP, LM5066I, LM5066