LTC2946CMS-1#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LTC2946CMS-1#PBF is an Analog Devices 3-channel I2C energy monitor in a 16-pin MSOP package, measuring voltage, current, and power simultaneously with 12-bit resolution. It supports adjustable thresholds and accumulates energy over time, making it ideal for server power management and battery-life optimization. From $8.50 in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LTC2946CMS-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.4300(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC2946CMS-1#PBF?
- Simultaneous 3-channel voltage, current, and power measurement with 12-bit ADC resolution
- I2C interface with programmable address allows up to 16 devices on one bus
- Adjustable over-voltage and over-current alert thresholds with internal fault registers
- Energy accumulation registers enable long-term Wh or mAh tracking without MCU intervention
What is LTC2946CMS-1#PBF used for?
The LTC2946CMS-1#PBF is widely deployed in multi-rail server power supplies and rack-mount systems where per-rail energy consumption must be tracked continuously for thermal budgeting and billing. It is also used in battery-powered embedded systems to monitor cell discharge in real time, enabling accurate state-of-charge estimation and over-current protection at the system level. Telecom base-station designers use it to watch 48 V bus currents alongside lower logic-rail voltages from a single I2C master without discrete shunt amplifiers.
What are the specifications of LTC2946CMS-1#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1669 |
| 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-G16 |
| JESD-609 Code | e3 |
| Number of Channels | 3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.19,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Supply Current-Max (Isup) | 1.3mA |
| Supply Voltage-Max (Vsup) | 100V |
| Supply Voltage-Min (Vsup) | 4V |
| Supply Voltage-Nom (Vsup) | 48V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +1.3V |
| Package | Small Outline Packages |
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 LTC2946CMS-1#PBF datasheet?
LTC2946CMS-1#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC2946CMS-1#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many power rails can LTC2946CMS-1#PBF monitor simultaneously and what is its ADC resolution?
The LTC2946CMS-1#PBF provides 3 independent measurement channels and uses a 12-bit ADC to digitize voltage, current, and power on each rail. At 12-bit resolution the device can resolve current steps as fine as 1 mA in typical shunt configurations, giving system designers accurate per-rail load data for thermal and power budgeting.
What communication interface does LTC2946CMS-1#PBF use and how many devices can share one bus?
LTC2946CMS-1#PBF uses an I2C interface running at standard 100 kHz or fast 400 kHz clock rates. The device supports programmable address selection, allowing up to 16 units to reside on a single 2-wire bus, which is essential in multi-supply server or telecom boards where dozens of rails need monitoring without consuming many MCU GPIO pins.
What voltage input range does LTC2946CMS-1#PBF support, making it usable across both 5 V and 48 V supply rails?
The LTC2946CMS-1#PBF accepts voltage sense inputs up to 100 V, covering 3.3 V logic rails, 12 V ATX supplies, and 48 V telecom bus voltages within the same device. Its wide common-mode input range removes the need for a separate voltage-divider circuit on high-voltage rails, simplifying the measurement front-end and improving accuracy.
How does LTC2946CMS-1#PBF's energy accumulation compare with polling a shunt amplifier from a microcontroller?
LTC2946CMS-1#PBF accumulates power readings internally into 24-bit energy and charge registers, updating every conversion cycle without MCU involvement. A polling approach using a discrete shunt amplifier and MCU ADC risks missing current transients shorter than the sampling interval and consumes CPU bandwidth; the LTC2946 eliminates both issues and delivers Wh-accurate energy totals over minutes to hours.
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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.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $12.0800 | $12.08 |
| 10+ | $8.3010 | $83.01 |
| 19+ | $7.2000 | $136.80 |
| 500+ | $6.4400 | $3220.00 |
| 1000+ | $5.4300 | $5430.00 |
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