My Inquiry
My Account
Texas Instruments LP3470IM5X-2.83/NOPB
- Part No.:
- LP3470IM5X-2.83/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP3470IM5X-2.83/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,269
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP3470IM5X-2.83/NOPB from Texas Instruments is a micropower voltage supervisor IC with 2.83 V ±1% reset threshold, programmable reset timeout via external capacitor, open-drain active-low reset output, and operation down to VCC = 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 LP3470IM5X-2.83/NOPB datasheet, LP3470IM5X-2.83/NOPB pinout, LP3470IM5X-2.83/NOPB application, or LP3470IM5X-2.83/NOPB equivalent, key selection criteria include reset threshold accuracy over temperature, quiescent current (16 µA typical), immunity to short VCC transients, and compatibility with standard SOT-23 layout practices.
Technical Context
The LP3470IM5X-2.83/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 open-drain Reset output requires an external pullup resistor (0.68–68 kΩ) and remains valid across the full operating range of VCC = 0.5 V to 5.5 V.
This device operates across –40°C to 85°C ambient temperature and features ±1% reset threshold accuracy over that range, low ICC (30 µA max), and immunity to sub-microsecond negative-going VCC transients - critical for stable operation in noisy or battery-depleted environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.83 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 battery life in portable equipment. |
| Operating Voltage Range | 0.5 V to 5.5 V - guarantees reset assertion even during deep brownout or startup. |
| Reset Output Type | Open-drain, active-low - allows wired-OR configuration and flexible voltage-level interfacing. |
| Reset Timeout Control | Externally programmable via capacitor on SRT pin (tRP = 2000 × C1, C1 in µF, tRP in ms) - supports custom POR timing from ~1 ms to seconds. |
| Hysteresis Voltage | 35 mV typical - prevents oscillation during slow-rising or noisy supply transitions. |
| VCC to Reset Delay | 100 µs typical - provides fast response to supply collapse while rejecting brief glitches. |
Pinout & Package
LP3470IM5X-2.83/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 to ground to set tRP; floating disables delay. |
| 2 - GND | Ground reference | Primary return path for internal circuitry and reset output sink current. |
| 3 - VCC1 | Internal supply tie | Must be connected directly to VCC (Pin 4); no external connection required. |
| 4 - VCC | Supply voltage and monitor input | Monitored rail; device operates and asserts reset based on this voltage. |
| 5 - Reset | Open-drain reset output | Active-low signal; requires external pullup to VCC or another logic rail. |
Key Features
| Feature | Design Value |
|---|---|
| ±1% reset threshold accuracy over temperature | Eliminates need for system-level recalibration across industrial temperature range. |
| Programmable reset timeout (tRP) | Enables precise POR timing tuning (e.g., 200 ms with 100 nF) without changing IC. |
| Immunity to short VCC transients | Rejects sub-microsecond negative glitches - reduces false resets in electrically noisy systems. |
| Valid reset down to VCC = 0.5 V | Ensures deterministic behavior during deep brownout or battery depletion. |
| Low 16 µA quiescent current | Minimizes standby power draw - critical for always-on or energy-harvesting applications. |
Applications
| Microprocessor Power Monitoring | Portable Medical Devices |
|---|---|
|
Use Scenario: Monitoring 3.3 V or 2.8 V supply rails powering ARM Cortex-M or RISC-V microcontrollers in handheld diagnostic tools. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection before firmware execution begins. Use Value: Prevents corrupted memory writes and undefined MCU states during unstable power conditions. |
Use Scenario: Supervising lithium-ion battery-backed supply in wearable ECG monitors with ultra-low-power sleep modes. IC Role / Device Role / Timing Role: Ensures clean reset assertion when battery voltage drops below safe operating threshold (2.83 V). Use Value: Guarantees safe shutdown and data integrity before battery exhaustion causes erratic behavior. |
| Industrial Sensor Nodes | Smart Metering Modules |
|
Use Scenario: Monitoring regulated 2.8 V supply in LoRaWAN-enabled environmental sensor nodes deployed outdoors. IC Role / Device Role / Timing Role: Provides robust POR and transient-immune supervision under wide-temperature and variable-load conditions. Use Value: Maintains system reliability despite thermal cycling and intermittent solar charging fluctuations. |
Use Scenario: Supervising auxiliary 2.8 V rail powering real-time clock and nonvolatile memory in electricity meters. IC Role / Device Role / Timing Role: Delivers accurate, hysteresis-stabilized reset to preserve metering accuracy during grid sags. Use Value: Prevents data loss or timekeeping errors during utility voltage disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G125DBVR | Fixed 1.25 V threshold; 3.5 µA IQ; requires external resistor for delay; no SRT pin. | Not suitable for 2.83 V monitoring; better for low-voltage core rails. | Select only if threshold matches target rail and ultra-low IQ is prioritized over flexibility. |
| MAX6326UT29D3+T | 2.93 V threshold (0.1 V higher); ±2.5% accuracy; fixed 200 ms timeout; no external capacitor option. | Limited timing adaptability; less precise threshold; narrower temp range (–40°C to 85°C same). | Choose when fixed delay suffices and 0.1 V threshold margin is acceptable in design. |
Compared with LP3470IM5X-2.83/NOPB, TPS3808G125DBVR offers lower quiescent current but lacks adjustable timing and correct threshold, while MAX6326UT29D3+T provides fixed timing and looser accuracy - making LP3470IM5X-2.83/NOPB optimal for designs requiring precise 2.83 V supervision with field-tunable reset duration.
Availability
LP3470IM5X-2.83/NOPB is available at Aetrix Electronics and suitable for microprocessor power monitoring, portable medical devices, industrial sensor nodes, and smart metering modules requiring stable component supply and long-term manufacturability.
Supply support for LP3470IM5X-2.83/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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LP3470 family was designed specifically for high-accuracy, low-power voltage supervision in space-constrained and battery-sensitive applications - emphasizing precision threshold stability, glitch immunity, and minimal footprint.
FAQ
What is the exact reset threshold voltage of the LP3470IM5X-2.83/NOPB?
The LP3470IM5X-2.83/NOPB has a factory-programmed reset threshold of 2.83 V with ±1% accuracy over the full operating temperature range of –40°C to 85°C. This value is specified in the Electrical Characteristics table and confirmed in the Mechanical, Packaging, and Orderable Information section of the official TI datasheet SNVS003G.
Does the LP3470IM5X-2.83/NOPB require an external capacitor to function?
No - the LP3470IM5X-2.83/NOPB functions without an external capacitor. The SRT pin may be left floating to disable the programmable reset timeout, resulting in immediate reset deassertion once VCC rises above the threshold. A capacitor is only required when a specific tRP delay (e.g., 200 ms) is needed.
What is the recommended pullup resistor value for the Reset pin of the LP3470IM5X-2.83/NOPB?
The recommended pullup resistor for the LP3470IM5X-2.83/NOPB Reset pin is 20 kΩ, as stated in the datasheet's Feature Description section. Values between 0.68 kΩ and 68 kΩ are acceptable; 20 kΩ balances leakage current tolerance and rise-time performance for most 3.3 V or 5 V logic interfaces.
Can the LP3470IM5X-2.83/NOPB operate with supply voltages below 1 V?
Yes - the LP3470IM5X-2.83/NOPB guarantees reset assertion down to VCC = 0.5 V, as verified in Section 6.5 Electrical Characteristics (VOL test condition). This capability ensures reliable supervision during deep brownout or battery discharge scenarios where other supervisors fail.
Is the LP3470IM5X-2.83/NOPB pin-compatible with other LP3470 variants?
Yes - all LP3470 variants, including LP3470IM5X-2.83/NOPB, share identical 5-pin SOT-23 (DBV) packaging and pinout. The only differences are factory-set reset thresholds (e.g., 2.63 V, 2.83 V, 2.93 V) and ordering suffixes; no PCB redesign is needed when substituting within the same package variant.
LP3470IM5X-2.83/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:
- 2.83V
- 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
LP3470IM5X-2.83/NOPB FAQ
1.How can I place an order for LP3470IM5X-2.83/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3470IM5X-2.83/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 LP3470IM5X-2.83/NOPB reliable?
The price and inventory of LP3470IM5X-2.83/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3470IM5X-2.83/NOPB is usually 5 days.
3.What payment methods are accepted for LP3470IM5X-2.83/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3470IM5X-2.83/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3470IM5X-2.83/NOPB?
LP3470IM5X-2.83/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3470IM5X-2.83/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 LP3470IM5X-2.83/NOPB?
For technical support, including LP3470IM5X-2.83/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3470IM5X-2.83/NOPB requirements.
6.How does Aetrix verify that LP3470IM5X-2.83/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3470IM5X-2.83/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 LP3470IM5X-2.83/NOPB meets industry standards.
7.What is the process for return or replacement of LP3470IM5X-2.83/NOPB?
All LP3470IM5X-2.83/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3470IM5X-2.83/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 LP3470IM5X-2.83/NOPB part is unused and in its original packaging.
Return procedure for LP3470IM5X-2.83/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP3470IM5X-2.83/NOPB Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
