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Texas Instruments LP3470M5X-4.63/NOPB
- Part No.:
- LP3470M5X-4.63/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP3470M5X-4.63/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,091
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Product details
Overview
LP3470M5X-4.63/NOPB from Texas Instruments is a micropower voltage supervisor IC with 4.63 V ±1% reset threshold, programmable reset time-out via external capacitor, open-drain active-low reset output, and operation down to VCC = 0.5 V - used for power-on-reset and brownout protection in microprocessor systems.
For engineers reviewing the LP3470M5X-4.63/NOPB datasheet, LP3470M5X-4.63/NOPB pinout, LP3470M5X-4.63/NOPB application, or LP3470M5X-4.63/NOPB equivalent, key selection criteria include reset threshold accuracy over temperature, immunity to short VCC transients, low quiescent current (16 µA typical), and compatibility with SOT-23-5 PCB footprints.
Technical Context
The LP3470M5X-4.63/NOPB implements a precision bandgap-based voltage reference with hysteresis (35 mV typical) and an internal delay timer controlled by an external capacitor on the SRT pin. Its reset assertion logic responds to VCC falling below 4.63 V and holds reset low for a user-defined interval after VCC recovers above threshold.
This device operates across –20°C to 85°C ambient, draws only 16 µA typical supply current at 4.5 V, and guarantees valid reset output down to 0.5 V supply - enabling reliable supervision in low-voltage and battery-powered systems where supply rail collapse must be detected early.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63 V ±1% over temperature - ensures precise power-rail monitoring without calibration. |
| Quiescent Current | 16 µA typical at 4.5 V - enables multi-year battery life in portable equipment. |
| Minimum Operating VCC | 0.5 V - guarantees reset validity during deep brownout or ultra-low-power shutdown. |
| Hysteresis Voltage | 35 mV typical - prevents reset chatter near threshold during slow-rising/falling supplies. |
| Reset Delay Accuracy | tRP = 2000 × C1 (C1 in µF, tRP in ms) - allows flexible POR timing from sub-ms to seconds using standard ceramic capacitors. |
| VCC to Reset Delay | 100 µs typical - provides fast response to supply faults before system corruption occurs. |
| Output Type | Open-drain, active-low - supports wired-OR reset buses and level-shifting with external pullup. |
Pinout & Package
LP3470M5X-4.63/NOPB is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm, with standard JEDEC MO-178 footprint and Q3 pin-1 orientation on tape-and-reel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SRT) | Reset time-out programming input | Connects to external capacitor (C1) to set tRP; floating disables delay. |
| 2 (GND) | Ground reference | Primary return path for internal reference and output stage; must be low-impedance. |
| 3 (VCC1) | Internal supply tie | Internally connected to VCC (Pin 4); must be externally shorted to VCC per datasheet. |
| 4 (VCC) | Supply voltage and monitor input | Monitored rail; powers device and triggers reset when < 4.63 V; operates down to 0.5 V. |
| 5 (Reset) | Open-drain reset output | Active-low signal; requires external pullup (0.68–68 kΩ) to VCC or another logic rail. |
Key Features
| Feature | Design Value |
|---|---|
| ±1% reset threshold accuracy | Maintains tight supervision margin across –20°C to 85°C, eliminating need for system-level recalibration. |
| Programmable reset timeout | Enables precise power-on-reset timing (e.g., 2 ms with 1 nF) without fixed-delay ICs or discrete RC networks. |
| Immunity to short VCC transients | Rejects sub-microsecond negative glitches up to ~100 mV amplitude, reducing false resets in noisy environments. |
| Low 16 µA quiescent current | Minimizes standby power draw in always-on supervisory paths - critical for coin-cell and energy-harvesting designs. |
| Valid reset down to 0.5 V VCC | Ensures deterministic reset assertion even during deep brownout or backup-battery switchover events. |
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-from-sleep. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset until VCC stabilizes above 4.63 V and remains high for programmable delay. Use Value: Prevents firmware execution on marginal supply, avoiding corrupted memory writes or peripheral lockup. | Use Scenario: Monitoring main Li-ion or alkaline supply in handheld test meters or portable data loggers. IC Role / Device Role / Timing Role: Brownout detector triggering graceful shutdown or low-power mode entry before supply collapses. Use Value: Extends usable battery capacity by enabling operation down to 0.5 V while guaranteeing safe reset behavior. |
| Industrial Control I/O Modules | Network Edge Sensor Nodes |
Use Scenario: Supervising 3.3 V or 5 V rails powering FPGA configuration, ADC references, and isolated communication interfaces. IC Role / Device Role / Timing Role: System-level reset coordinator ensuring synchronized initialization of mixed-signal subsystems. Use Value: Eliminates race conditions between power rails and digital logic, improving field reliability in harsh EMI environments. | Use Scenario: Providing robust POR for LoRaWAN or NB-IoT sensor nodes powered by solar harvesters or primary cells. IC Role / Device Role / Timing Role: Low-quiescent supervisor enabling long-term deployment with minimal self-consumption. Use Value: Achieves >10-year battery life while maintaining guaranteed reset validity during intermittent charging cycles. |
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; 350 ms factory-programmed delay; 2.9 µA IQ; SOT-23-6 | Lacks programmable delay and 4.63 V threshold; requires layout change for 6-pin footprint | Select when fixed delay and lower IQ outweigh need for threshold match and flexibility. |
| MAX6326UT46D3+T | 4.63 V threshold; 140 ms fixed delay; 1.6 µA IQ; SC70-5 | Same threshold but non-programmable delay; smaller SC70 package limits capacitor routing and thermal performance | Select for ultra-low-power, space-constrained designs where 140 ms delay suffices. |
Compared with LP3470M5X-4.63/NOPB, TPS3808G33DBVR offers lower quiescent current but sacrifices threshold and delay flexibility, while MAX6326UT46D3+T matches the 4.63 V threshold but locks delay at 140 ms and uses a thermally inferior SC70 package.
Availability
LP3470M5X-4.63/NOPB is available at Aetrix Electronics and suitable for microprocessor power-on-reset, battery-powered instrumentation, industrial control I/O modules, and network edge sensor nodes requiring stable component supply and long-term manufacturability.
Supply support for LP3470M5X-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 delivering analog and embedded processing solutions, with leadership in power management, signal chain, and microcontrollers.
The LP3470 family was designed specifically for cost-sensitive, space-constrained applications requiring high-accuracy voltage supervision with programmable timing - targeting portable electronics, industrial controls, and automotive body electronics.
FAQ
What is the exact reset threshold voltage of the LP3470M5X-4.63/NOPB?
The LP3470M5X-4.63/NOPB has a factory-trimmed reset threshold of 4.63 V with ±1% accuracy over the full operating temperature range (–20°C to 85°C). This value is specified in the Electrical Characteristics table under VRTH and confirmed in the Device Information section of the datasheet. The LP3470M5X-4.63/NOPB maintains this tolerance without external calibration.
How do I configure the reset time-out period for the LP3470M5X-4.63/NOPB?
Configure the reset time-out period (tRP) by connecting a capacitor (C1) between the SRT pin (Pin 1) and GND. Use the formula tRP (ms) = 2000 × C1 (µF); for example, a 100 nF capacitor yields 200 ms. Leave SRT floating to disable the delay. The LP3470M5X-4.63/NOPB datasheet specifies ceramic capacitors rated ≥10 V for stability.
Does the LP3470M5X-4.63/NOPB require an external pullup resistor on the Reset pin?
Yes, the LP3470M5X-4.63/NOPB features an open-drain Reset output (Pin 5) and requires an external pullup resistor to VCC or another logic rail. The recommended value is 20 kΩ, within the validated range of 0.68 kΩ to 68 kΩ. This ensures proper logic-high level while limiting output current to <10 mA - a requirement explicitly defined for the LP3470M5X-4.63/NOPB.
Can the LP3470M5X-4.63/NOPB operate reliably at very low supply voltages?
Yes, the LP3470M5X-4.63/NOPB guarantees valid reset assertion down to VCC = 0.5 V, as stated in the Recommended Operating Conditions and Electrical Characteristics tables. This capability enables use in ultra-low-power systems undergoing brownout or backup-battery transitions - a core specification verified for every LP3470M5X-4.63/NOPB unit.
What is the package type and footprint compatibility of the LP3470M5X-4.63/NOPB?
The LP3470M5X-4.63/NOPB uses a 5-pin SOT-23 (DBV) package with nominal dimensions 1.60 mm × 2.90 mm and JEDEC MO-178 outline. It shares the same footprint and pinout as other LP3470 variants (e.g., LP3470M5X-4.38/NOPB) and standard SOT-23-5 devices, supporting drop-in replacement within the same family - confirmed in TI's Mechanical, Packaging, and Orderable Information.
LP3470M5X-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:
- -20°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LP3470M5X-4.63/NOPB FAQ
1.How can I place an order for LP3470M5X-4.63/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3470M5X-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 LP3470M5X-4.63/NOPB reliable?
The price and inventory of LP3470M5X-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 LP3470M5X-4.63/NOPB is usually 5 days.
3.What payment methods are accepted for LP3470M5X-4.63/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3470M5X-4.63/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3470M5X-4.63/NOPB?
LP3470M5X-4.63/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3470M5X-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 LP3470M5X-4.63/NOPB?
For technical support, including LP3470M5X-4.63/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3470M5X-4.63/NOPB requirements.
6.How does Aetrix verify that LP3470M5X-4.63/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3470M5X-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 LP3470M5X-4.63/NOPB meets industry standards.
7.What is the process for return or replacement of LP3470M5X-4.63/NOPB?
All LP3470M5X-4.63/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3470M5X-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 LP3470M5X-4.63/NOPB part is unused and in its original packaging.
Return procedure for LP3470M5X-4.63/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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