Schematic for LTC3401 Reference Design: This LTC3401-based...

Create a comprehensive test plan for this project. Define the testing scope, objectives, and key functional and non-functional requirements to be validated. Outline different test categories (e.g., Electrical Testing, Thermal Testing, Mechanical Testing, Environmental Testing, Communication & Interface Testing) and specify test cases, expected outcomes, and pass/fail criteria. If applicable, include test environment setup, automation strategies, edge cases, and potential risks. Provide recommendations for improving test coverage and ensuring reliability.

307 days

flux

is thinking...

307d 19:41:21

The response is taking longer than expected. Please try again with a more focused question.

307 days

Ready.

please explain what R3 does.

onurtek

@copilot please explain what R3 does.

copilot

In this LTC3401-based boost converter design,

R3

is likely part of the feedback network, which is used to regulate the output voltage.

The boost converter adjusts its output voltage by comparing the feedback voltage—derived from the output voltage—against a reference voltage inside the control IC (in this case, the LTC3401).

Here's how it typically works:

$R3$ forms part of a resistor divider network connected from the output voltage to ground. The divider network's output is connected to the feedback pin (FB) of the LTC3401.
The values of the resistors in this network, along with any reference voltage in the IC, determine the regulated output voltage.
Typically, the top resistor is connected from VOUT to FB and the bottom resistor is connected from FB to GND. In this project, $R1$ and $R4$ are also involved in setting the voltage divider for the feedback network.

The role of

R3

specifically, with its resistance value of 30.1kΩ, would have been chosen to ensure that the desired output voltage $3.3\text{V}$ in this project is accurately maintained by the regulation loop of the LTC3401.

Someone is typing...

please write me a description for this project, here is an example: This LT3473-...

vasy_skral

please write me a description for this project, here is an example: This LT3473-based reference design is a step-up voltage regulator, converting a lower input voltage to a stable 16V output. Ideal for applications requiring a regulated 16V supply. #referenceDesign #project #stepUp #voltageRegulator #16V #LT3473 #LT3473EDD #PBF

copilot

This LTC3401-based reference design is a boost converter, transforming a lower input voltage into a stable 16V output. Perfect for applications that need a regulated 16V power source. #referenceDesign #project #boostConverter #voltageRegulator #16V #LTC3401 #LTC3401EMS #TRPBF

Someone is typing...

please explain what R2 does.

onurtek

@copilot please explain what R2 does.

copilot

In your LTC3401 boost converter circuit,

R2

is likely part of a compensation or feedback network that helps stabilize the converter's output. It connects to

C4

at one end and is not directly connected to the feedback pin. Here's a typical role it might play:

Compensation Network: $R2$ could be part of a compensation network that helps in stabilizing the control loop of the boost converter. In combination with $C4$ , they form a zero-pole pair that adjusts the loop response to maintain stability and improve transient response.
Additional Role in Feedback Path (depending on the complete circuit design): If there are other components connected specifically to the feedback pin, $R2$ could have a role in setting the DC gain and response characteristics of the feedback loop.

If you have more specific questions or details about the circuit operation, feel free to ask!

Someone is typing...

please explain what VIN does.

onurtek

@copilot please explain what VIN does.

copilot

In your project, VIN represents the input voltage power net for the boost converter circuit. It's a power supply net providing the input energy needed for the

\text{LTC3401}

to operate and boost this input to a higher, regulated output voltage, which in your case is 3.3V.

Here's a bit more context:

Function in the Circuit: In the context of a boost converter, the VIN pin on the $\text{LTC3401}$ accepts the lower, unregulated input voltage from your power source. This VIN input is usually lower than the desired output voltage.
Connections:
- VIN is connected to the input supply, which is passed through the $C2$ , a capacitor, to help stabilize the voltage.
- The VIN net members include the $\text{LTC3401}$ 's VIN pin, the shutdown control (SHDN) pin which allows turning off the converter to save power, and the input side of the $L1$ inductor.
Role in Boost Converters: Since the boost converter's job is to "boost" or step up the voltage level, it needs an input voltage (VIN) that is lower than the desired output voltage (3.3V in your design).

If you have a specific input voltage or power source in mind for this boost converter, let me know!

Someone is typing...

MODE

+3V3

VIN

Manufacturer Part Number

LTC3401EMS#TRPBF

Capacitance

470p F

Resistance

549k Ω

Resistance

30.1k Ω

Resistance

909k Ω

+3V3

VIN

Inductance

4.7u H

GND

Resistance

82k Ω

Capacitance

4.7p F

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper

Reports copper elements that are shorting.

Invalid Layer

Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.

Component Overrides • 10

	Designator	Ruleset
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊

Airwires

Reports missing routed traces between pads in a net.

Deprecated Rules

Reports nodes that are using rules that are not supported anymore.

Layers with Multiple Fills

Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.

Floating Copper • 1

	Name
	Trace 8efd

Protected Intrusions • 9

	Protected	Intruder
	Polygon	Trace 7a09
	Polygon	Trace ac1c
	Polygon	Trace 7a51
	Polygon	Trace 3f68
	Polygon	Trace 02b6
	Polygon	Trace 90ab
	Polygon	Via
	Polygon	Trace 0bc2
	Polygon	Trace 6734

Manufacturing

Manufacturer Part Number • 8

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	R1	None
	R2	None
	R3	None
	R4	None

Parts Available

Beta

Checks that all parts have a part number and are available from distributors.

System Checks

Auto-Layout

Beta

Reports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.

Passive Components

Resistor Power Rating

Beta

Checks that the power traveling across a given resistor is under its rating with 50% headroom.

Learn more

Pull Up/Pull Down Presence

Beta

Checks that IC pins that require pull up or pull down resistors have them.

Learn more

Capacitor Voltage Rating

Beta

Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Inductor
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
jharwinbarrozo
15.1k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
jharwinbarrozo
1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

Inspect

LTC3401 Reference Design

Controls

Properties

License

https://creativecommons.org/licenses/by/4.0/

Availability & Pricing

Distributor		Qty 1
	Digi-Key	$4.52–$9.12
	LCSC	$3.45–$3.50
	Mouser	$8.24

Assets

Thumbnail

LTC3401 Reference Design image.png

id=LTC3401 Reference Design image

Welcome 👋

Flux helps you build PCBs faster with an AI teammate!

Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.