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

Texas Instruments LP3470IM5-4.63/NOPB

Name: LP3470IM5-4.63/NOPB
Brand: Texas Instruments
SKU: LP3470IM5-4.63/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LP3470IM5-4.63/NOPB

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: LP3470IM5-4.63/NOPB.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

LP3470IM5-4.63/NOPB from Texas Instruments is a micropower voltage supervisor IC with 4.63 V ±1% reset threshold, open-drain active-low reset output, programmable reset timeout via external capacitor (t_RP = 2000 × C₁), 16 µA typical quiescent current, and valid reset assertion down to V_CC = 0.5 V. It monitors microprocessor supply rails in battery-powered systems to ensure reliable power-on-reset and brownout protection.

For engineers reviewing the LP3470IM5-4.63/NOPB datasheet, LP3470IM5-4.63/NOPB pinout, LP3470IM5-4.63/NOPB application, or LP3470IM5-4.63/NOPB equivalent, key selection criteria include reset threshold accuracy over temperature, immunity to short V_CC transients, SOT-23-5 package compatibility, and external capacitor-based timing flexibility for POR sequencing.

Technical Context

The LP3470IM5-4.63/NOPB implements a precision bandgap reference and comparator architecture to achieve ±1% reset threshold accuracy across –40°C to +85°C. Its internal hysteresis (15–65 mV) prevents chatter during slow-rising or noisy supply transitions.

Reset assertion is triggered when V_CC falls below 4.63 V minus hysteresis; after recovery, the open-drain Reset output remains low for a user-programmed duration (1–3.5 ms typical with 1 nF capacitor) before releasing high. The SRT pin accepts ceramic capacitors ≥10 V rating for stable timing.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	4.63 V ±1% over –40°C to +85°C - ensures precise power-rail monitoring without calibration.
Quiescent Current	16 µA typical at 4.5 V - enables multi-year operation in coin-cell or energy-harvesting applications.
Reset Output Type	Open-drain, active-low - allows wired-OR configuration and flexible pullup to any logic rail up to 5.5 V.
Minimum Operating V_CC	0.5 V - guarantees valid reset assertion even during deep brownout or ultra-low-power shutdown sequences.
Reset Timeout Range	1–3.5 ms (with 1 nF capacitor) - provides sufficient hold time for microcontroller initialization without excessive delay.
Hysteresis Voltage	15–65 mV - suppresses false resets caused by supply ripple or noise near threshold crossing.
V_CC Transient Immunity	Immune to short negative-going transients - eliminates spurious resets from switching noise or ESD coupling on supply lines.

Pinout & Package

LP3470IM5-4.63/NOPB is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm, with moisture sensitivity level (MSL) 1 and lead finish Sn (matte tin).

Pin/Terminal	Circuit Role	Design Meaning
1 - SRT	Reset timeout programming input	Connect external capacitor (C₁) to GND; t_RP (ms) = 2000 × C₁ (µF); leave floating for minimum delay.
2 - GND	Ground reference	Primary return path for internal reference and comparator; must be low-impedance connection to system ground plane.
3 - V_CC1	Internal supply tie	Must be connected directly to V_CC (Pin 4); no external component required - internal node for bias generation.
4 - V_CC	Supply and monitor input	Monitored voltage rail; operates from 0.5 V to 5.5 V; absolute max 6 V; supplies internal circuitry and threshold detection.
5 - Reset	Open-drain reset output	Active-low signal; requires external pullup resistor (0.68–68 kΩ) to V_CC or another logic rail; sinks ≤10 mA.

Key Features

Feature	Design Value
±1% reset threshold accuracy	Eliminates need for external trimming or calibration in industrial and portable designs across full temperature range.
Programmable reset timeout	Enables precise POR timing alignment with diverse microcontroller boot requirements using a single external capacitor.
0.5 V reset validity	Guarantees deterministic reset behavior during ultra-low-voltage wake-up or backup-battery operation.
Open-drain output architecture	Supports mixed-voltage systems and shared reset buses without level-shifting components.
Transient immunity	Rejects sub-microsecond supply glitches, reducing false resets in electrically noisy environments like motor drives or SMPS domains.

Applications

Microprocessor Power Monitoring	Portable Medical Devices
Use Scenario: Monitoring 3.3 V or 5 V supply rails powering ARM Cortex-M or RISC-V microcontrollers in embedded control units. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on-reset and brownout detection with factory-trimmed 4.63 V threshold. Use Value: Prevents CPU lockup or corrupted firmware execution during unstable power conditions; timing programmability ensures compatibility with varying MCU reset hold-time requirements.	Use Scenario: Ensuring safe startup and shutdown sequencing in handheld diagnostic tools powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Supervisory IC asserting reset until battery voltage stabilizes above 4.63 V after cold start or charge recovery. Use Value: Guarantees clinical-grade reliability by eliminating undervoltage operation that could cause sensor misreads or data loss during critical measurement cycles.
Industrial IoT Edge Nodes	Smart Energy Meters
Use Scenario: Power supervision in battery-backed wireless sensor nodes deployed in remote infrastructure monitoring. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor enabling >5-year battery life while maintaining accurate 4.63 V reset threshold over wide temperature swings. Use Value: Delivers long-term stability without recalibration, reducing field maintenance and improving predictive maintenance accuracy.	Use Scenario: Monitoring auxiliary 3.3 V supply derived from mains-powered DC/DC converter in revenue-grade electricity meters. IC Role / Device Role / Timing Role: Reset generator ensuring meter SoC initializes only after stable power is confirmed, with hysteresis preventing oscillation near threshold. Use Value: Meets IEC 62053-21 accuracy requirements by eliminating spurious resets that could corrupt energy accumulation registers.

Microprocessor Power Monitoring

Portable Medical Devices

Use Scenario: Monitoring 3.3 V or 5 V supply rails powering ARM Cortex-M or RISC-V microcontrollers in embedded control units.

IC Role / Device Role / Timing Role: Voltage supervisor providing power-on-reset and brownout detection with factory-trimmed 4.63 V threshold.

Use Value: Prevents CPU lockup or corrupted firmware execution during unstable power conditions; timing programmability ensures compatibility with varying MCU reset hold-time requirements.

Use Scenario: Ensuring safe startup and shutdown sequencing in handheld diagnostic tools powered by single-cell Li-ion batteries.

IC Role / Device Role / Timing Role: Supervisory IC asserting reset until battery voltage stabilizes above 4.63 V after cold start or charge recovery.

Use Value: Guarantees clinical-grade reliability by eliminating undervoltage operation that could cause sensor misreads or data loss during critical measurement cycles.

Industrial IoT Edge Nodes

Smart Energy Meters

Use Scenario: Power supervision in battery-backed wireless sensor nodes deployed in remote infrastructure monitoring.

IC Role / Device Role / Timing Role: Low-quiescent-current supervisor enabling >5-year battery life while maintaining accurate 4.63 V reset threshold over wide temperature swings.

Use Value: Delivers long-term stability without recalibration, reducing field maintenance and improving predictive maintenance accuracy.

Use Scenario: Monitoring auxiliary 3.3 V supply derived from mains-powered DC/DC converter in revenue-grade electricity meters.

IC Role / Device Role / Timing Role: Reset generator ensuring meter SoC initializes only after stable power is confirmed, with hysteresis preventing oscillation near threshold.

Use Value: Meets IEC 62053-21 accuracy requirements by eliminating spurious resets that could corrupt energy accumulation registers.

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 reset threshold; 35 µA typical ICC; requires external capacitor for delay; same SOT-23-5 package.	Not suitable where 4.63 V threshold is required for specific rail monitoring (e.g., 5 V LDO output).	Select only if system uses 3.3 V supply and higher quiescent current is acceptable.
MAX6326UT46D3+	4.63 V reset threshold; 1.6 µA typical ICC; fixed 200 ms timeout; SOT-23-5 package; no external capacitor needed.	Lacks programmable timeout - limits flexibility in systems requiring custom POR durations.	Prefer when ultra-low ICC dominates design priorities and fixed delay suffices.

Compared with LP3470IM5-4.63/NOPB, TPS3808G33DBVR offers lower cost but mismatched threshold and higher ICC, while MAX6326UT46D3+ delivers superior battery life but sacrifices timing adjustability - making LP3470IM5-4.63/NOPB optimal for designs needing both precision 4.63 V supervision and field-tunable reset hold time.

Availability

LP3470IM5-4.63/NOPB is available at Aetrix Electronics and suitable for microprocessor power monitoring, portable medical devices, industrial IoT edge nodes, and smart energy meters requiring stable component supply and long-term lifecycle support.

Supply support for LP3470IM5-4.63/NOPB 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and high-reliability ICs.

The LP3470 family was designed for precision voltage supervision in space-constrained, battery-sensitive applications - delivering factory-trimmed thresholds, micropower operation, and robust transient immunity in SOT-23 packaging.

FAQ

What is the exact reset threshold voltage of the LP3470IM5-4.63/NOPB?

The LP3470IM5-4.63/NOPB has a factory-programmed reset threshold of 4.63 V with ±1% accuracy over the full operating temperature range of –40°C to +85°C. This value is guaranteed by production testing and applies to all units shipped under this part number, as specified in the Electrical Characteristics table of the SNVS003G datasheet.

How do I calculate the reset timeout period for the LP3470IM5-4.63/NOPB?

The reset timeout period (t_RP) for the LP3470IM5-4.63/NOPB is calculated using the formula t_RP (ms) = 2000 × C₁ (µF), where C₁ is the capacitor connected between the SRT pin and GND. For example, a 100 nF capacitor yields a 200 ms timeout. The LP3470IM5-4.63/NOPB supports values from 1 ms to 3.5 ms with standard capacitor tolerances.

Can the LP3470IM5-4.63/NOPB operate with a supply voltage below 1 V?

Yes, the LP3470IM5-4.63/NOPB guarantees valid reset assertion down to V_CC = 0.5 V, as confirmed in the Recommended Operating Conditions table. This capability ensures reliable brownout detection even during deep discharge of lithium-based batteries or ultra-low-power system wake-up sequences.

What is the recommended pullup resistor value for the Reset output of the LP3470IM5-4.63/NOPB?

The Reset output of the LP3470IM5-4.63/NOPB is an open-drain N-channel MOSFET requiring an external pullup resistor. TI specifies a range of 0.68 kΩ to 68 kΩ; a typical value of 20 kΩ is recommended for most applications to balance speed, power, and noise immunity while ensuring logic-high levels under leakage conditions.

Is the LP3470IM5-4.63/NOPB pin-compatible with other members of the LP3470 family?

Yes, all LP3470 variants-including LP3470IM5-4.63/NOPB-share identical 5-pin SOT-23 (DBV) packaging and pinout. The only functional difference is the factory-programmed reset threshold voltage; electrical characteristics such as quiescent current, hysteresis, and timing behavior remain consistent across the family.

LP3470IM5-4.63/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 4.63V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 1ms Minimum

Operating Temperature:: -40°C ~ 85°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

LP3470IM5-4.63/NOPB FAQ

1.How can I place an order for LP3470IM5-4.63/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LP3470IM5-4.63/NOPB 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 LP3470IM5-4.63/NOPB reliable?

The price and inventory of LP3470IM5-4.63/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3470IM5-4.63/NOPB is usually 5 days.

3.What payment methods are accepted for LP3470IM5-4.63/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3470IM5-4.63/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LP3470IM5-4.63/NOPB?

LP3470IM5-4.63/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LP3470IM5-4.63/NOPB 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 LP3470IM5-4.63/NOPB?

For technical support, including LP3470IM5-4.63/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3470IM5-4.63/NOPB requirements.

6.How does Aetrix verify that LP3470IM5-4.63/NOPB is sourced from the original manufacturer or authorized distributors?

All LP3470IM5-4.63/NOPB 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 LP3470IM5-4.63/NOPB meets industry standards.

7.What is the process for return or replacement of LP3470IM5-4.63/NOPB?

All LP3470IM5-4.63/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3470IM5-4.63/NOPB, 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 LP3470IM5-4.63/NOPB part is unused and in its original packaging.

Return procedure for LP3470IM5-4.63/NOPB:

1.Submit a request within 90 days.

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

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