Specifications
| Type | Description |
|---|---|
| Part Number | LM5066 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package Case | PWP 28-pin TSSOP with exposed pad, 9.70 x 4.40 mm nominal body |
| Operating Input Voltage Range | 10 to 80 V; recommended VIN/SENSE/OUT voltage |
| Continuous Absolute Maximum Voltage | 100 V; feature list |
| Current Limit Threshold Option | 26 mV ±12%; ILIM threshold option |
| Current Limit Threshold Option | 50 mV ±6%; ILIM threshold option |
| Voltage Monitoring Accuracy | ±2.7%; VIN/VOUT monitoring, LM5066 |
| Current Monitoring Accuracy | ±3%; LM5066 precision monitoring |
| Power Monitoring Accuracy | ±4.5%; LM5066 precision monitoring |
| ADC Resolution | 12-bit; internal monitoring ADC |
| ADC Sampling Rate | 1 kHz; internal monitoring ADC |
| Operating Junction Temperature | -40 to 125 °C; recommended operating conditions |
| Package | PWP 28-pin; device information table |
| Package Body Size | 9.70 x 4.40 mm; nominal device information table |
| Absolute Maximum VIN/VIN_K/GATE/UVLO/EN/SENSE/PGD Voltage | -0.3 to 100 V; referenced to GND |
| Absolute Maximum OVLO/FB/TIMER/PWR Voltage | -0.3 to 7 V; referenced to GND |
| Absolute Maximum OUT Voltage | -0.3 to 100 V; referenced to GND |
| Absolute Maximum OUT Transient Voltage | -1 to 100 V; 1-ms transient, referenced to GND |
| Absolute Maximum Logic/Low-Voltage Pin Voltage | -0.3 to 6 V; SCL, SDAI, SDAO, CL, ADR0, ADR1, ADR2, VDD, VAUX, DIODE, RETRY to GND |
| Absolute Maximum Differential Pin Voltage | -0.3 to 0.3 V; SENSE to VIN_K, VIN to VIN_K, AGND to GND |
| Absolute Maximum Junction Temperature | 150 °C; absolute maximum ratings |
| Storage Temperature | -65 to 150 °C; absolute maximum ratings |
| ESD Rating | ±2000 V; human body model, ANSI/ESDA/JEDEC JS-001, all pins except GATE |
| ESD Rating | ±500 V; charged device model, JEDEC JESD22-C101, all pins |
| Junction-to-Ambient Thermal Resistance | 35.6 °C/W; PWP 28-pin package |
| Junction-to-Case Top Thermal Resistance | 19.9 °C/W; PWP 28-pin package |
| Junction-to-Board Thermal Resistance | 16.8 °C/W; PWP 28-pin package |
| Junction-to-Top Characterization Parameter | 0.5 °C/W; PWP 28-pin package |
| Junction-to-Board Characterization Parameter | 16.7 °C/W; PWP 28-pin package |
| Junction-to-Case Bottom Thermal Resistance | 2.9 °C/W; PWP 28-pin package |
| UVLO Enable Threshold | 2.48 V nominal; UVLO/EN pin |
| UVLO Hysteresis Current | 20 µA; UVLO/EN pin internal current source |
| OVLO Disable Threshold | 2.46 V; OVLO pin |
| OVLO Hysteresis Current | 21 µA; OVLO pin internal current source |
| Auxiliary Voltage Input Full Scale | 2.97 V; VAUX telemetry input |
| Internal Bias Supply | 4.85 V; VDD internal sub-regulator output |
| Power Good Feedback Threshold | 2.46 V nominal; FB pin threshold for PGD switching |
| FB Hysteresis Current | 20 µA; FB pin internal current source |
| Current Limit Range Selection | 50 mV nominal; CL connected to GND or left floating |
| Current Limit Range Selection | 26 mV nominal; CL connected to VDD |
| SMBus Interface | I2C/SMBus, PMBus-compliant command structure |
| Supported Telemetry | Power, voltage, current, temperature, and fault data through I2C/SMBus interface |
| Datasheet Status | request_only |
Product Overview
The LM5066 is a Texas Instruments hot-swap controller with monitoring for Power_Management designs requiring controlled power-path operation and telemetry. Its recommended VIN/SENSE/OUT operating input voltage range is 10 to 80 V, while the feature list identifies a 100 V continuous absolute maximum voltage capability.
Monitoring is provided through an I2C/SMBus interface using a PMBus-compliant command structure. The supported telemetry set includes power, voltage, current, temperature, and fault data. The internal monitoring ADC is 12-bit and samples at 1 kHz, with LM5066 monitoring accuracy specified as ±2.7% for VIN/VOUT, ±3% for current, and ±4.5% for power.
The device is supplied in a PWP 28-pin TSSOP package with exposed pad and a 9.70 x 4.40 mm nominal body. Thermal data for this package includes 35.6 °C/W junction-to-ambient resistance and 2.9 °C/W junction-to-case bottom resistance. Recommended operating junction temperature is -40 to 125 °C.
Key Features
- 10 to 80 V recommended input operating range
- 100 V continuous absolute maximum voltage capability
- 26 mV ±12% current-limit threshold option
- 50 mV ±6% current-limit threshold option
- ±2.7% VIN/VOUT monitoring accuracy
- ±3% current monitoring accuracy
- ±4.5% power monitoring accuracy
- 12-bit ADC with 1 kHz sampling rate
- I2C/SMBus interface with PMBus-compliant command structure
- Telemetry for power, voltage, current, temperature, and faults
Typical Applications
- Hot-swap power control
- Power-path voltage monitoring
- Current telemetry systems
- Power telemetry systems
- Temperature and fault reporting
- PMBus-managed power designs
- 10 to 80 V power rails
Procurement Notes
When requesting a quote for LM5066, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What is the recommended operating input voltage range for LM5066?
The LM5066 recommended operating condition for VIN, SENSE, and OUT voltage is 10 to 80 V. The extracted datasheet facts also list a 100 V continuous absolute maximum voltage in the feature list.
What monitoring functions does the LM5066 provide?
The LM5066 supports power, voltage, current, temperature, and fault telemetry through an I2C/SMBus interface with a PMBus-compliant command structure. Its internal monitoring ADC is 12-bit and operates at a 1 kHz sampling rate.
Which current-limit threshold options are specified for LM5066?
The extracted facts list two LM5066 current-limit threshold options: 26 mV ±12% and 50 mV ±6%. The CL pin range selection is 26 mV nominal when connected to VDD and 50 mV nominal when grounded or floating.
What package is used for the Texas Instruments LM5066?
The LM5066 is listed in a PWP 28-pin TSSOP package with an exposed pad. The nominal package body size from the device information table is 9.70 x 4.40 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 20, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.