LTC2946IDE#PBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
LTC2946IDE#PBF is a high-voltage wide-range power monitor IC from Analog Devices, capable of measuring voltage, current, and power on rails from 2.7 V to 100 V with 12-bit resolution via an I2C/SMBus interface. It integrates 3 monitoring channels, adjustable alert thresholds, and energy accumulation registers in a compact 16-pin DFN-EP package. Ideal for server power management, automotive telematics, and industrial energy monitoring applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LTC2946IDE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.7600(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC2946IDE#PBF?
- 2.7 V to 100 V wide operating range covers automotive 12/24/48 V and server 48 V bus rails in a single device
- Simultaneous 12-bit voltage, current, and power measurement with integrated sense resistor averaging
- I2C/SMBus interface with programmable alert thresholds and energy accumulation registers for autonomous power logging
- 3 independent monitoring channels enable multi-rail power budgeting without additional ICs
- Compact 16-pin 5×3 mm DFN-EP package with exposed pad for low-profile, thermally efficient PCB mounting
What is LTC2946IDE#PBF used for?
The LTC2946IDE#PBF is designed for precision power management in high-voltage systems such as 48 V server backplane rails, automotive battery management units, and industrial motor drives where continuous real-time energy metering is required. Its 2.7 V to 100 V operating range and 3-channel architecture allow a single device to simultaneously monitor input, intermediate, and output rails in DC-DC converter stages. With programmable alert thresholds and an I2C interface, it integrates directly into BMC or microcontroller-based power monitoring loops for overcurrent protection and energy-efficiency reporting.
What are the specifications of LTC2946IDE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1732 |
| Reach Compliance Code | Compliant |
| YTEOL | 10 |
| Additional Feature | MNL RST:N;PW FL IO:N;PRG RST DLY:N;WD:N;WDO:N;WWD:N |
| Adjustable Threshold | YES |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-N16 |
| JESD-609 Code | e3 |
| Number of Channels | 3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC16,.12,18 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH |
| Supply Current-Max (Isup) | 1.3mA |
| Supply Voltage-Max (Vsup) | 100V |
| Supply Voltage-Min (Vsup) | 4V |
| Supply Voltage-Nom (Vsup) | 48V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.45mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +1.3V |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the LTC2946IDE#PBF datasheet?
LTC2946IDE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC2946IDE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What voltage rails can the LTC2946IDE#PBF monitor, and is it suitable for 48 V server power architecture?
The LTC2946IDE#PBF operates across a 2.7 V to 100 V input range, making it fully compatible with 48 V server open-rack power architectures as well as 12 V and 24 V systems. Its 12-bit ADC resolves voltage differences as small as approximately 25 mV on a 100 V bus, enabling tight power budgeting. All 3 monitoring channels share this range, so a single IC can simultaneously track the 48 V input and two lower-voltage intermediate bus rails.
How does the LTC2946IDE#PBF calculate power, and what accuracy can system designers expect?
The LTC2946IDE#PBF multiplies 12-bit digitized voltage and current samples to produce real-time power readings and accumulates them into 24-bit energy registers, allowing energy-to-date calculations without an external microcontroller. Current is measured via an external shunt resistor—typically 10 mΩ to 100 mΩ—and the device's current-sense input range of ±102.4 mV supports milliamp resolution. The integrated ADC achieves better than 0.5% linearity error across the full operating range, sufficient for server power monitoring and IEC 62053 sub-metering compliance.
Can the LTC2946IDE#PBF trigger automatic alerts for overcurrent conditions without continuous firmware polling?
Yes, the LTC2946IDE#PBF provides programmable upper and lower threshold registers for voltage, current, and power. When any measurement crosses a programmed limit, an open-drain ALERT pin asserts low, notifying the host MCU or BMC via interrupt without polling. Threshold hysteresis is also configurable to prevent chatter on noisy rails. This autonomous alert mechanism allows software to handle only exception events rather than continuously reading the I2C bus, reducing CPU overhead in 48 V server management controllers.
For an automotive 48 V mild-hybrid system, how should the external shunt resistor for the LTC2946IDE#PBF be selected?
In a 48 V mild-hybrid system passing up to 100 A, the shunt resistor must fit within the LTC2946IDE#PBF's ±102.4 mV sense input range. A 1 mΩ shunt produces 100 mV at 100 A—well within range—while dissipating only 10 W. For lower currents such as 10 A auxiliary loads, a 10 mΩ shunt giving 100 mV at full scale improves 12-bit resolution to approximately 0.025 mA per LSB. The shunt should be an AEC-Q200-qualified component rated for the required continuous current and -40°C to +125°C automotive temperature range.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
LT3062EDCB#TRPBF
Small Outline No-lead
Integrated Circuit
LT3062EDCB#TRMPBF
Small Outline No-lead
Integrated Circuit
LT8641IUDC#TRPBF
Other
Integrated Circuit
HMC412AMS8GTR
Small Outline Packages
Integrated Circuit
LT3062HMS8E#PBF
Small Outline Packages
Integrated Circuit
LT3062IMS8E#PBF
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $13.3900 | $13.39 |
| 10+ | $9.2580 | $92.58 |
| 19+ | $8.2400 | $156.56 |
| 35+ | $7.5920 | $265.72 |
| 100+ | $7.2800 | $728.00 |
| 200+ | $6.7600 | $1352.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit