My Inquiry
My Account
Texas Instruments LP3470IM5X-4.63
- Part No.:
- LP3470IM5X-4.63
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP3470IM5X-4.63.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,287
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP3470IM5X-4.63 from Texas Instruments is a micropower voltage supervisor IC with factory-programmed 4.63 V ±1% reset threshold, open-drain active-low reset output, and programmable reset timeout via external capacitor (tRP = 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 VCC = 0.5 V - ideal for battery-powered microprocessor power monitoring.
For engineers reviewing the LP3470IM5X-4.63 datasheet, LP3470IM5X-4.63 pinout, LP3470IM5X-4.63 application, or LP3470IM5X-4.63 equivalent, this page delivers verified specifications, SOT-23-5 pin functions, real-world timing behavior, and validated alternative options for critical power-on-reset (POR) and brownout protection designs.
Technical Context
The LP3470IM5X-4.63 implements a precision bandgap-based voltage reference and comparator architecture to achieve ±1% reset threshold accuracy over –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 VCC falls below 4.63 V minus hysteresis; after recovery, the open-drain Reset output remains low for a user-defined tRP (1–3.5 ms typical with 1 nF), then releases high. The SRT pin accepts ceramic capacitors ≥10 V rating for accurate delay programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63 V ±1% over temperature - ensures reliable POR at nominal 5 V rail without margin overdesign |
| Quiescent Current | 16 µA typical at 4.5 V - enables multi-year operation in coin-cell or energy-harvesting systems |
| Operating Voltage Range | 0.5 V to 5.5 V - guarantees reset validity even during deep brownout or ultra-low-power wake-up |
| Reset Output Type | Open-drain, active-low - supports wired-OR logic, level shifting, and flexible pullup to any compatible rail |
| Reset Timeout (tRP) | Programmable via external capacitor (tRP = 2000 × C1, C1 in µF) - enables precise hold-off timing from sub-ms to seconds |
| Hysteresis Voltage | 15–65 mV - suppresses false resets on marginal or noisy supply recovery |
| VOL (Output Low) | ≤0.4 V at 4 mA sink - ensures solid logic-low drive into standard CMOS inputs under full load |
Pinout & Package
LP3470IM5X-4.63 is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm, RoHS-compliant with green (Pb-free, no Sb/Br) finish and moisture sensitivity level (MSL) 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SRT | Reset timeout programming input | Connect external capacitor to GND; sets tRP = 2000 × C1 (C1 in µF, tRP in ms); leave floating for minimal delay |
| 2 - GND | Ground reference | System ground return path for internal reference and comparator; must be low-impedance |
| 3 - VCC1 | Internal supply tie | Must be shorted to VCC (Pin 4); not an independent input - internal connection to main supply rail |
| 4 - VCC | Supply voltage & threshold monitor | Main power input and monitored rail; reset triggers when VCC drops below 4.63 V − VHYST |
| 5 - Reset | Open-drain reset output | Active-low signal; requires external pullup resistor (0.68–68 kΩ) to define logic-high level |
Key Features
| Feature | Design Value |
|---|---|
| ±1% reset threshold accuracy | Eliminates need for external trimming or calibration in production, reducing BOM and test cost |
| Programmable reset timeout | Enables system-specific POR hold time tuning without changing IC - supports diverse µP reset requirements |
| Immunity to short VCC transients | Rejects <100 ns negative glitches up to ~100 mV below threshold - avoids spurious resets in noisy environments |
| Valid reset down to 0.5 V | Ensures controlled shutdown during deep brownout, preventing undefined µP state or memory corruption |
| Low 16 µA quiescent current | Extends battery life in portable devices; allows continuous supervision without significant standby drain |
Applications
| Microprocessor Power-On Reset | Battery-Powered Instrumentation |
|---|---|
|
Use Scenario: Ensuring clean boot sequence for ARM Cortex-M or RISC-V microcontrollers during 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 holds for programmable tRP. Use Value: Prevents execution of corrupted code or peripheral initialization errors by guaranteeing minimum reset pulse width and precise threshold alignment with 5 V supply rails. |
Use Scenario: Maintaining system integrity in handheld multimeters or gas detectors operating from single Li-ion or alkaline cells. IC Role / Device Role / Timing Role: Monitoring declining battery voltage and triggering orderly shutdown before undervoltage lockout disrupts sensor readings. Use Value: Leverages 0.5 V operation and 16 µA current to supervise battery discharge down to endpoint while minimizing self-drain. |
| Industrial Control Module | Embedded Networking Node |
|
Use Scenario: Securing reliable startup of PLC I/O modules exposed to 24 V DC field wiring with transient coupling. IC Role / Device Role / Timing Role: Providing glitch-immune reset generation despite EFT bursts or inductive switching noise on VCC. Use Value: Uses built-in transient rejection and 65 mV hysteresis to avoid false resets, improving system uptime in electrically harsh environments. |
Use Scenario: Enabling robust restart after power interruption in Zigbee or LoRaWAN edge nodes deployed in remote locations. IC Role / Device Role / Timing Role: Acting as primary POR element tied to main 3.3 V regulator output, with tRP set to 200 ms via 100 nF capacitor. Use Value: Guarantees sufficient time for RF transceiver initialization and firmware checksum validation before network rejoin. |
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; 35 µA IQ; requires external R/C for delay; tighter 0.5% threshold accuracy | Not suitable for 4.63 V rail monitoring; better for 3.3 V systems requiring higher precision | Select if supervising 3.3 V supplies and needing lower threshold drift; verify tRP design matches TPS3808's RC-based timing |
| MAX6326UT46D3+ | 4.63 V threshold; 1.6 µA IQ; fixed 200 ms timeout; push-pull output; -40°C to +125°C rating | Lower power but non-programmable delay; push-pull eliminates external pullup; wider temp range | Choose for ultra-low-power, high-temp industrial use where fixed delay suffices and board space permits different footprint |
Compared with LP3470IM5X-4.63, TPS3808G33DBVR serves 3.3 V systems with superior accuracy but incompatible threshold, while MAX6326UT46D3+ offers lower IQ and extended temperature range at the cost of programmability and open-drain flexibility.
Availability
LP3470IM5X-4.63 is available at Aetrix Electronics and suitable for microprocessor power-on-reset, battery-powered instrumentation, and industrial control modules requiring stable component supply across long-lifecycle programs.
Supply support for LP3470IM5X-4.63 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, embedded processing, and connectivity solutions with emphasis on reliability, precision, and low-power innovation.
The LP3470 family was designed specifically for cost-sensitive, space-constrained applications requiring accurate, programmable power-supply monitoring - targeting portable electronics, industrial sensors, and legacy µP systems.
FAQ
What is the exact reset threshold voltage of LP3470IM5X-4.63?
The LP3470IM5X-4.63 has a factory-programmed reset threshold of 4.63 V with ±1% accuracy over the full operating temperature range (–40°C to +85°C). This value is guaranteed per TI's Electrical Characteristics table and applies to all units shipped under this orderable part number.
Does LP3470IM5X-4.63 require an external capacitor to function?
No - LP3470IM5X-4.63 operates without an external capacitor. Pin SRT may be left floating for minimal reset timeout. However, connecting a capacitor (e.g., 100 nF) between SRT and GND programs a defined tRP = 200 ms, which is required for most µP reset timing compliance.
What is the recommended pullup resistor value for the Reset pin of LP3470IM5X-4.63?
Texas Instruments specifies a pullup resistor range of 0.68 kΩ to 68 kΩ for the open-drain Reset output of LP3470IM5X-4.63. A typical value of 20 kΩ provides optimal balance between fast rise time and low static current draw while ensuring logic-high levels across process/voltage/temperature corners.
Can LP3470IM5X-4.63 monitor a 3.3 V supply?
No - LP3470IM5X-4.63 is factory-trimmed for 4.63 V threshold and is not suitable for reliable monitoring of 3.3 V supplies. For 3.3 V rails, consider alternatives like TPS3808G33DBVR or LP3470IM5X-3.30/NOPB (if available), which match the target voltage within tolerance.
Is LP3470IM5X-4.63 RoHS compliant and lead-free?
Yes - LP3470IM5X-4.63/NOPB is RoHS-compliant and lead-free, with "Green" (Pb-free, no Sb/Br) finish per TI's packaging documentation. It carries Level-1 MSL rating (unlimited floor life at ≤30°C/60% RH) and is supplied in tape-and-reel format (3000 pcs/reel).
LP3470IM5X-4.63 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:
- 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
LP3470IM5X-4.63 FAQ
1.How can I place an order for LP3470IM5X-4.63 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3470IM5X-4.63 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-4.63 reliable?
The price and inventory of LP3470IM5X-4.63 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3470IM5X-4.63 is usually 5 days.
3.What payment methods are accepted for LP3470IM5X-4.63?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3470IM5X-4.63 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3470IM5X-4.63?
LP3470IM5X-4.63 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3470IM5X-4.63 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-4.63?
For technical support, including LP3470IM5X-4.63 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3470IM5X-4.63 requirements.
6.How does Aetrix verify that LP3470IM5X-4.63 is sourced from the original manufacturer or authorized distributors?
All LP3470IM5X-4.63 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-4.63 meets industry standards.
7.What is the process for return or replacement of LP3470IM5X-4.63?
All LP3470IM5X-4.63 units undergo pre-shipment inspection (PSI). If there is an issue with LP3470IM5X-4.63, 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-4.63 part is unused and in its original packaging.
Return procedure for LP3470IM5X-4.63:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP3470IM5X-4.63 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…
