PAC1934-I/JQ Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip PAC1934-I/JQ is a quad high-side current and power monitor with I2C/SMBus interface, supporting up to 32 V rails. It features an on-chip accumulator for accurate energy measurement. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- PAC1934-I/JQ Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad-channel high-side current sensing up to 32 V rails with 16-bit resolution per channel
- Integrated energy accumulator enables real-time power and energy measurement without external MCU overhead
- I2C/SMBus interface with configurable address supports up to 4 devices on a single bus
Applications
The PAC1934-I/JQ is well-suited for power management in servers, telecommunications equipment, and industrial controllers where monitoring multiple power rails simultaneously is critical. Its quad-channel architecture and accumulator make it ideal for battery-powered IoT nodes and portable instruments that require accurate energy accounting. System designers also deploy it in data center power distribution units to track per-rail consumption over time.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PAC1934-I/JQ:
Frequently Asked Questions
What voltage rails can the PAC1934-I/JQ monitor simultaneously?
The PAC1934-I/JQ can monitor up to 4 independent high-side current channels on rails up to 32 V. Each channel delivers 16-bit resolution measurements, and all four channels can be sampled concurrently, making it practical for multi-rail power systems in servers and industrial equipment.
How does the on-chip accumulator benefit energy-sensitive designs?
The integrated accumulator continuously sums power readings over time, providing accurate energy totals in watt-hours without constant MCU intervention. This reduces firmware overhead and improves measurement accuracy, especially over long intervals such as 24-hour or multi-day battery life assessments at supply voltages from 2.7 V to 5.5 V.
When would a designer choose PAC1934-I/JQ over a single-channel monitor like PAC1921?
PAC1934-I/JQ is the better choice when a design needs 4 independent current-sense channels in a single 16-pin QFN package rather than four discrete single-channel ICs. This reduces BOM count, PCB area, and I2C bus addresses used. It is particularly advantageous in space-constrained multi-rail platforms running at 3.3 V, 5 V, 12 V, and 48 V simultaneously.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”