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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Texas Instruments LP3470M5X-3.08

Name: LP3470M5X-3.08
Brand: Texas Instruments
SKU: LP3470M5X-3.08
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LP3470M5X-3.08

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: LP3470M5X-3.08.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

LP3470M5X-3.08 from Texas Instruments is a micropower voltage supervisor IC with factory-programmed 3.08 V ±1% reset threshold, open-drain active-low reset output, and programmable reset timeout via external capacitor (t_RP = 2000 × C₁, C₁ in µF). It operates from 0.5 V to 5.5 V, draws only 16 µA typical quiescent current, and ensures valid reset down to V_CC = 0.5 V - ideal for battery-powered microprocessor power-on-reset (POR) supervision.

For engineers reviewing the LP3470M5X-3.08 datasheet, LP3470M5X-3.08 pinout, LP3470M5X-3.08 application, or LP3470M5X-3.08 equivalent, key selection considerations include its precise 3.08 V threshold accuracy over temperature, immunity to short V_CC transients, SOT-23-5 package compatibility, and design flexibility enabled by capacitor-programmable reset delay.

Technical Context

The LP3470M5X-3.08 implements a precision bandgap-based voltage reference comparator with built-in hysteresis (15–65 mV) to prevent chatter during threshold crossing. Its reset assertion logic combines analog monitoring of V_CC against the 3.08 V threshold and digital timing control governed by the external SRT capacitor.

It features an open-drain NMOS output requiring an external pullup resistor (0.68–68 kΩ), supports operation across –20°C to +85°C ambient, and maintains reset validity even as V_CC drops to 0.5 V - enabling reliable brownout detection in low-voltage embedded systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	3.08 V ±1% over temperature - ensures accurate power-rail monitoring without calibration.
Quiescent Current	16 µA typical at 4.5 V - enables multi-year battery life in portable equipment.
Operating Voltage Range	0.5 V to 5.5 V - supports supervision of sub-1 V logic rails and standard 3.3/5 V supplies.
Reset Output Type	Open-drain, active-low - allows wired-OR configuration and flexible voltage-level interfacing.
Reset Timeout Control	Capacitor-programmable (t_RP = 2000 × C₁) - provides adjustable delay (e.g., 2 ms with 1 nF) without firmware or additional ICs.
Hysteresis Voltage	15–65 mV - prevents oscillation during slow or noisy V_CC recovery near threshold.
V_CC to Reset Delay	100–300 µs - guarantees fast fault response for critical µP reset sequencing.

Pinout & Package

LP3470M5X-3.08 is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm, RoHS-compliant with lead finish Cu-Sn, MSL Level-1, and tape-and-reel packaging (3000 units/reel).

Pin/Terminal	Circuit Role	Design Meaning
1 - SRT	Reset timeout programming input	Connect external capacitor to GND to set t_RP; floating for minimum delay.
2 - GND	Ground reference	Primary return path for internal circuitry and reset output sink current.
3 - V_CC1	Internal supply tie	Must be connected directly to V_CC (Pin 4); no external connection required.
4 - V_CC	Supply voltage & threshold monitor input	Monitored rail; device operates and asserts reset based on this voltage level.
5 - Reset	Open-drain reset output	Active-low signal; requires external pullup to V_CC or another logic rail.

Key Features

Feature	Design Value
±1% reset threshold accuracy	Eliminates need for external trimming or system-level calibration across –20°C to +85°C.
Programmable reset timeout	Enables precise POR timing alignment (e.g., 200 ms with 100 nF) without MCU intervention.
Immunity to short V_CC transients	Rejects glitches ≤100 ns at –200 mV amplitude, reducing false resets in noisy environments.
Valid reset down to 0.5 V	Ensures controlled shutdown during deep brownout, preventing undefined µP states.
Low 16 µA quiescent current	Minimizes standby power loss - critical for coin-cell or energy-harvesting applications.

Applications

Microprocessor Power-On Reset	Battery-Powered Instrumentation
Use Scenario: Ensuring clean boot sequence for ARM Cortex-M or RISC-V microcontrollers after cold start or wake-up from deep sleep. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset until V_CC stabilizes above 3.08 V and holds for programmable delay. Use Value: Prevents code execution before supply rails meet minimum operating requirements, eliminating lockups and memory corruption.	Use Scenario: Supervising supply rails in handheld test meters, portable gas detectors, or wireless sensor nodes powered by single Li-ion or alkaline cells. IC Role / Device Role / Timing Role: Monitoring main V_CC and triggering controlled reset during battery depletion or load-switch transitions. Use Value: Extends usable battery life by enabling operation down to 0.5 V while guaranteeing deterministic reset behavior.
Industrial Control I/O Modules	Embedded Edge Computing Gateways
Use Scenario: Securing reliable startup of PLC I/O expansion modules exposed to 24 V DC field wiring with inductive switching noise. IC Role / Device Role / Timing Role: Detecting brownouts on local 3.3 V logic rail derived from noisy industrial power supplies. Use Value: Suppresses spurious resets caused by transient dips, improving system uptime and diagnostic integrity.	Use Scenario: Managing power sequencing for dual-core SoCs (e.g., NXP i.MX8) in fanless edge gateways with thermal throttling and dynamic voltage scaling. IC Role / Device Role / Timing Role: Providing independent hardware reset assertion synchronized to core rail stabilization, decoupled from PMIC timing. Use Value: Avoids race conditions between SoC internal POR and external power management, ensuring deterministic boot state.

Microprocessor Power-On Reset

Battery-Powered Instrumentation

Use Scenario: Ensuring clean boot sequence for ARM Cortex-M or RISC-V microcontrollers after cold start or wake-up from deep sleep.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset until V_CC stabilizes above 3.08 V and holds for programmable delay.

Use Value: Prevents code execution before supply rails meet minimum operating requirements, eliminating lockups and memory corruption.

Use Scenario: Supervising supply rails in handheld test meters, portable gas detectors, or wireless sensor nodes powered by single Li-ion or alkaline cells.

IC Role / Device Role / Timing Role: Monitoring main V_CC and triggering controlled reset during battery depletion or load-switch transitions.

Use Value: Extends usable battery life by enabling operation down to 0.5 V while guaranteeing deterministic reset behavior.

Industrial Control I/O Modules

Embedded Edge Computing Gateways

Use Scenario: Securing reliable startup of PLC I/O expansion modules exposed to 24 V DC field wiring with inductive switching noise.

IC Role / Device Role / Timing Role: Detecting brownouts on local 3.3 V logic rail derived from noisy industrial power supplies.

Use Value: Suppresses spurious resets caused by transient dips, improving system uptime and diagnostic integrity.

Use Scenario: Managing power sequencing for dual-core SoCs (e.g., NXP i.MX8) in fanless edge gateways with thermal throttling and dynamic voltage scaling.

IC Role / Device Role / Timing Role: Providing independent hardware reset assertion synchronized to core rail stabilization, decoupled from PMIC timing.

Use Value: Avoids race conditions between SoC internal POR and external power management, ensuring deterministic boot state.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3808G33DBVR	Fixed 3.3 V threshold (±0.5%), 35 µA IQ, internal delay (200 ms), no external capacitor option.	Lacks programmability; better for cost-sensitive designs where fixed delay suffices.	Choose if 3.3 V threshold matches system rail and board space precludes capacitor placement.
MAX6326UT308+T	3.08 V threshold (±2.5%), 1.6 µA IQ, fixed 140 ms delay, SC70-5 package (smaller footprint).	Higher threshold tolerance and lower IQ, but no delay adjustment; SC70 limits thermal dissipation.	Prefer for ultra-low-power, space-constrained designs where ±2.5% threshold error is acceptable.

Compared with LP3470M5X-3.08, TPS3808G33DBVR trades programmability for tighter threshold accuracy and higher IQ, while MAX6326UT308+T offers lower power and smaller size at the expense of threshold precision and timing flexibility - making LP3470M5X-3.08 optimal when adjustable reset delay and ±1% accuracy are mandatory.

Availability

LP3470M5X-3.08 is available at Aetrix Electronics and suitable for microprocessor power-on-reset, battery-powered instrumentation, and industrial I/O module applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for LP3470M5X-3.08 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with decades of expertise in power management, signal chain, and high-reliability IC design.

The LP3470 series was engineered specifically for precision, low-power voltage supervision in resource-constrained embedded systems - emphasizing threshold accuracy, transient immunity, and minimal board footprint.

FAQ

What is the exact reset threshold voltage of the LP3470M5X-3.08?

The LP3470M5X-3.08 has a factory-programmed reset threshold of 3.08 V with ±1% accuracy over the full operating temperature range (–20°C to +85°C). This value is guaranteed by production testing and applies to the specific LP3470M5X-3.08 variant, not the broader LP3470 family's other threshold options.

How do I configure the reset timeout period for the LP3470M5X-3.08?

Configure the reset timeout by connecting a capacitor (C₁) between the SRT pin (Pin 1) and GND. The timeout t_RP in milliseconds equals 2000 multiplied by C₁ in microfarads (e.g., 100 nF yields 200 ms). For minimal delay, leave SRT floating. Use ceramic capacitors rated ≥10 V for stability.

Does the LP3470M5X-3.08 require an external pullup resistor on the Reset pin?

Yes - the LP3470M5X-3.08 features an open-drain Reset output (Pin 5) and requires an external pullup resistor to a valid logic rail (typically V_CC). Recommended values range from 0.68 kΩ to 68 kΩ; 20 kΩ is typical. This ensures proper logic-high assertion and limits sink current to <10 mA.

Can the LP3470M5X-3.08 operate reliably below 1 V?

Yes - the LP3470M5X-3.08 guarantees valid reset assertion down to V_CC = 0.5 V, enabling use in ultra-low-voltage systems such as energy-harvesting nodes or deeply discharged battery scenarios. Its internal circuitry remains functional and the Reset output stays asserted until V_CC rises above 3.08 V and the programmed timeout expires.

What is the package type and marking code for LP3470M5X-3.08?

The LP3470M5X-3.08 uses a 5-pin SOT-23 (DBV) package with nominal dimensions 1.60 mm × 2.90 mm. Its top-side marking is "D28B", consistent with TI's orderable device documentation for the M5X tape-and-reel variant with commercial temperature range (–20°C to +85°C).

LP3470M5X-3.08 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 3.08V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 1ms Minimum

Operating Temperature:: -20°C ~ 85°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

LP3470M5X-3.08 FAQ

1.How can I place an order for LP3470M5X-3.08 through Aetrix?

Please submit a Request for Quotation (RFQ) for LP3470M5X-3.08 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LP3470M5X-3.08 reliable?

The price and inventory of LP3470M5X-3.08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3470M5X-3.08 is usually 5 days.

3.What payment methods are accepted for LP3470M5X-3.08?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3470M5X-3.08 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LP3470M5X-3.08?

LP3470M5X-3.08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LP3470M5X-3.08 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LP3470M5X-3.08?

For technical support, including LP3470M5X-3.08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3470M5X-3.08 requirements.

6.How does Aetrix verify that LP3470M5X-3.08 is sourced from the original manufacturer or authorized distributors?

All LP3470M5X-3.08 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP3470M5X-3.08 meets industry standards.

7.What is the process for return or replacement of LP3470M5X-3.08?

All LP3470M5X-3.08 units undergo pre-shipment inspection (PSI). If there is an issue with LP3470M5X-3.08, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LP3470M5X-3.08 part is unused and in its original packaging.

Return procedure for LP3470M5X-3.08:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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