Mfr Part #:

NCP45491XMNTWG

The NCP45491XMNTWG is a 4-channel voltage bus and high-side current shunt monitor from On Semiconductor. It operates from 5V to 26V and is housed in a 32-QFN package.

✓ Total Stock: 12,960 pcs

$ Price Range: $0.75

NCP45491XMNTWG Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Smaxon Electronics ✓ Non-Authorised Inventory information	7,020 pcs On Request	7020 pcs	On Request	1	On Request	On Request	21+	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	4,628 pcs On Request	4628 pcs	On Request	1	On Request	On Request	21+	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	1,312 pcs On Request	1312 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

NCP45491XMNTWG Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	Power Supply Controllers, Monitors
Manufacturer Name	On Semiconductor
Applications	Power Supply Monitor
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)
Supplier Device Package	32-QFN (4x4)
Tape & Reel	Yes
Voltage	5V ~ 26V

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NCP45491XMNTWG Description

Short technical summary and product information.

The NCP45491XMNTWG is a high-performance monolithic IC designed for monitoring bus voltage and current on four high-voltage power supplies simultaneously. Manufactured by On Semiconductor, this device translates high-voltage bus parameters to a low-voltage domain, multiplexing them onto a single differential output for external measurement by ADCs.

Key features include the ability to translate and scale shunt and bus voltages up to 26V, with a single device monitoring four supplies. It can also be paired to monitor up to eight supplies. The operating temperature range is -40°C to 85°C (TA), and it is supplied in a 32-QFN (4x4) package with surface mount mounting type.

This component is suitable for applications such as computers, notebooks, graphical cards, power management/power control loops, and battery chargers. Its design allows for individual gain programming of all channels via external resistor selection and offers adjustable output common-mode voltage to adapt to most external ADCs.

NCP45491XMNTWG Quick Information

Product Type: Power Supply Controller/Monitor

Canonical Name: NCP45491XMNTWG 4-Channel Voltage Bus and 4-Channel High-Side Current Shunt Monitor

Subcategory: Power Supply Controllers, Monitors

NCP45491XMNTWG Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Lead-Free Device

NCP45491XMNTWG Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

NCP45491XMNTWG Features

Monitors four high-voltage supplies.
Scales voltages up to 26V.
Individually gain programmable channels.
Operates from -40°C to 85°C.
Surface mount 32-QFN package.

NCP45491XMNTWG Applications

Power supply monitoring in electronic systems.
Monitors multiple supply rails in one system.
Pairs to monitor up to eight supplies.
Provides real-time bus voltage valid indication.
Interfaces with external ADC converters.

NCP45491XMNTWG FAQs

5 frequently asked questions generated from this part’s specifications.

What is the operating voltage range for the NCP45491XMNTWG?

The operating voltage range is 5V to 26V.

What is the operating temperature range for this component?

The operating temperature range is -40°C to 85°C (TA).

What package type is the NCP45491XMNTWG supplied in?

It is supplied in a 32-QFN (4x4) package.

What are the main applications for the NCP45491XMNTWG?

It is used for Power Supply Monitoring.

Does the NCP45491XMNTWG monitor multiple supplies?

Yes, a single device monitors four supplies and may be paired for monitoring up to eight supplies.