PAC1944T-E/4MX footprint, schematic symbol and 3D model by Microchip

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PCB Footprints

PAC1944T-E/4MX - Microchip PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - 16-Lead Very Thin Quad Flat, No Lead Package (4MX)

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Datasheet Download Datasheet
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Part Number PAC1944T-E/4MX
Manufacturer Microchip
Pin Count 17
Part Category Integrated Circuit
Package Category Quad Flat No-Lead
Footprint Name Quad Flat No-Lead - 16-Lead Very Thin Quad Flat, No Lead Package (4MX)
Released Date May 19, 2022
Last Modified Date Jan 11, 2024 6:26 AM UTC
Pinout / Pin List Click Here (Member Only)

PAC1944T-E/4MX Details

Manufacturer Part Number:
PAC1944T-E/4MX
Rohs Code:
Yes
Part Life Cycle Code:
Active
Pin Count:
16
Manufacturer Package Code:
VQFN-16
Country Of Origin:
Thailand
ECCN Code:
EAR99
HTS Code:
8542.39.00.60
Factory Lead Time:
5 Weeks
Manufacturer:
Microchip Technology Inc
YTEOL:
23
Adjustable Threshold:
NO
Analog IC - Other Type:
VOLTAGE SUPERVISOR/RESET IC
JESD-30 Code:
S-PQCC-N16
JESD-609 Code:
e3
Length:
3 mm
Number of Channels:
4
Number of Functions:
1
Number of Terminals:
16
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
VQCCN
Package Shape:
SQUARE
Package Style:
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Seated Height-Max:
0.9 mm
Supply Current-Max (Isup):
0.495 mA
Supply Voltage-Max (Vsup):
5.5 V
Supply Voltage-Min (Vsup):
2.7 V
Supply Voltage-Nom (Vsup):
3.3 V
Surface Mount:
YES
Terminal Finish:
Matte Tin (Sn)
Terminal Form:
NO LEAD
Terminal Pitch:
0.5 mm
Terminal Position:
QUAD
Width:
3 mm

PAC1944T-E/4MX Frequently Asked Questions (FAQs)

A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the analog and digital grounds separate and connect them at a single point. Use a decoupling capacitor (e.g., 10uF) close to the device to filter out noise.
Use a sense resistor (e.g., 1mΩ) in series with the load, and connect it to the VIN pin. Ensure the sense resistor is close to the device and use a Kelvin connection to minimize errors. Also, use a low-noise, low-impedance power supply to minimize measurement errors.
The maximum current rating of the PAC1944T-E/4MX is 40A. However, the device can handle higher currents for short durations. Consult the datasheet for thermal derating and current handling guidelines.
Use a 3.3V or 5V tolerant microcontroller and connect the SDA and SCL pins to the microcontroller's I2C bus. Ensure the microcontroller's I2C clock frequency is within the PAC1944T-E/4MX's specified range (100kHz to 400kHz).
The ALERT pin is an open-drain output that indicates an overcurrent, undervoltage, or overtemperature fault. It can be connected to a microcontroller's interrupt pin to trigger an interrupt upon fault detection.

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PAC1944T-E/4MX Overview

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About Microchip

Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th

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