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Texas Instruments LM8365BALMF22/NOPB
- Part No.:
- LM8365BALMF22/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM8365BALMF22/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,110
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Product details
Overview
LM8365BALMF22/NOPB from Texas Instruments is a micropower undervoltage-sensing circuit with active-low open-drain reset output, 2.7 V detection threshold (±2.5%), 0.62 μA quiescent current at 2.6 V, and programmable delay via external capacitor - used for microprocessor reset control in battery-powered portable electronics.
For engineers reviewing the LM8365BALMF22/NOPB datasheet, LM8365BALMF22/NOPB pinout, LM8365BALMF22/NOPB application, or LM8365BALMF22/NOPB equivalent, this page delivers verified specifications, SOT-23-5 pin mapping, real-world timing behavior, and validated alternative options for low-power system supervision.
Technical Context
The LM8365BALMF22/NOPB integrates a precision voltage reference, comparator with built-in hysteresis (0.135 V typical), and internal delay generator controlled by an external capacitor on the CD pin. Its input voltage range spans 1 V to 6 V, enabling operation down to near-dead-battery conditions.
It features a dedicated CD pin with internal 1 MΩ pull-up resistor (0.5–2 MΩ) and 0.675×VIN delay threshold, allowing accurate time-delayed reset assertion/recovery. The open-drain RESET output sinks up to 2.5 mA at 1.5 V and supports external pull-up to VIN or 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.7 V ±2.5% - precise brown-out detection point for 3 V systems with guaranteed margin against false resets |
| Quiescent Current | 0.62 μA at VIN = 2.6 V - enables multi-year battery life in coin-cell–powered devices |
| Input Voltage Range | 1 V to 6 V - supports single-cell Li-ion, alkaline, NiMH, and regulated 3.3/5 V rails |
| Delay Programmability | 130 ms typical with 0.1 μF capacitor - configurable reset hold time without firmware or additional ICs |
| Output Type | Active-low open-drain - allows wired-OR reset bus and flexible voltage-level translation |
| Hysteresis | 0.135 V typical - prevents oscillation during slow-rising/falling supply transitions |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable consumer environments |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, 1.45 mm max height, JEDEC MO-178 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Open-drain output | Active-low reset signal; requires external pull-up; sinks ≥1 mA at 0.5 V |
| 2: INPUT | Voltage sense input | Monitors VIN; threshold triggers at 2.7 V (decreasing); operates from 1 V to 6 V |
| 3: GND | Ground reference | Primary return path for internal reference, comparator, and CD discharge circuit |
| 4: N/C | No connection | Internally unconnected; must be left floating or tied to GND per layout best practice |
| 5: CD | Capacitor delay node | Charges through internal ~1 MΩ resistor; delay determined by RC time constant and 0.675×VIN threshold |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.62 μA enables >10-year shelf life in backup-supervised systems |
| Programmable reset delay | RC-based timing (e.g., 130 ms with 0.1 μF) eliminates need for discrete timers or firmware delays |
| High-accuracy threshold | ±2.5% tolerance ensures reliable reset assertion across temperature and process variation |
| Built-in hysteresis | 0.135 V prevents chatter during marginal supply recovery, reducing system instability risk |
| Wide input voltage range | 1 V to 6 V supports direct monitoring of unregulated battery sources without LDO pre-regulation |
Applications
| Portable Power Management | Microprocessor Supervision |
|---|---|
Use Scenario: Monitoring single-cell Li-ion or alkaline battery voltage in handheld medical meters. IC Role / Device Role / Timing Role: Undervoltage detector triggering graceful shutdown before data corruption occurs. Use Value: 0.62 μA current draw extends battery life by months; 2.7 V threshold aligns with safe cutoff for 3 V logic. |
Use Scenario: Ensuring clean reset of ARM Cortex-M0+ MCU during cold start and brown-out events. IC Role / Device Role / Timing Role: Generating time-delayed active-low reset pulse synchronized to power rail stabilization. Use Value: 130 ms delay (with 0.1 μF) meets typical MCU power-on reset timing requirements without software overhead. |
| Low-Battery Indicator | Power-Fail Detection |
Use Scenario: Driving LED warning in wireless sensor node when battery drops below 2.7 V. IC Role / Device Role / Timing Role: Open-drain output directly sinking LED current with no additional transistor. Use Value: Active-low output simplifies interface; ±2.5% accuracy ensures consistent visual alert across units. |
Use Scenario: Detecting AC/DC adapter loss in smart home hub to initiate backup battery switchover. IC Role / Device Role / Timing Role: Providing glitch-free reset signal during transient dips caused by load switching. Use Value: Built-in hysteresis (0.135 V) prevents repeated toggling during noisy line transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar undervoltage-sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G01DBVR | Higher quiescent current (800 nA), fixed 1.0 s delay, no external capacitor programming | Less flexible timing; better suited for fixed-delay applications where precision isn't critical | Choose when long, deterministic delay is required and ultra-low IQ is secondary |
| MAX809SEUR+T | Fixed 2.93 V threshold, no programmable delay, 3.5 μA IQ, SOT-23-3 package | Lacks delay tuning and lower accuracy (±3.5%); simpler but less adaptable | Choose for cost-sensitive, space-constrained designs where delay is unnecessary |
Compared with LM8365BALMF22/NOPB, TPS3808G01DBVR offers longer factory-set delay but higher current, while MAX809SEUR+T sacrifices programmability and accuracy for minimal footprint and BOM count - making LM8365BALMF22/NOPB optimal for battery-critical, timing-flexible supervision.
Availability
LM8365BALMF22/NOPB is available at Aetrix Electronics and suitable for portable electronics, microprocessor reset controllers, and low-battery detection requiring stable component supply across long-lifecycle designs.
Supply support for LM8365BALMF22/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 LM8365 series was designed specifically for micropower system supervision in battery-operated devices, emphasizing ultra-low IQ, precision thresholding, and field-programmable reset timing - targeting portable instrumentation, wearables, and IoT edge nodes.
FAQ
What is the exact detection threshold voltage of LM8365BALMF22/NOPB?
The LM8365BALMF22/NOPB has a nominal detection threshold of 2.7 V with ±2.5% accuracy over temperature and process variation. This means the actual trip point falls between 2.633 V and 2.767 V at 25°C, ensuring robust undervoltage detection in 3 V systems without premature shutdown.
How does the CD pin function in LM8365BALMF22/NOPB?
The CD pin in LM8365BALMF22/NOPB serves as the delay capacitor node. When INPUT drops below threshold, CD discharges rapidly; when INPUT rises above VDET+, CD charges through an internal ~1 MΩ resistor until reaching ~0.675×VIN, at which point RESET returns high. A 0.1 μF capacitor yields ~130 ms delay.
Is LM8365BALMF22/NOPB pin-compatible with other members of the LM8365 family?
Yes - all LM8365 variants (e.g., LM8365BALMF27/NOPB, LM8365BALMF45/NOPB) share identical SOT-23-5 pinout and electrical interface. Only the detection threshold (2.7 V vs. 4.5 V) and minor parameter tolerances differ; no PCB changes are needed when substituting within the same package.
What is the maximum sink current capability of the RESET output in LM8365BALMF22/NOPB?
The RESET output of LM8365BALMF22/NOPB can sink up to 2.5 mA at VIN = 1.5 V and VOL = 0.5 V, per Electrical Characteristics table. At higher VIN (e.g., 4.5 V), sink current remains ≥1 mA - sufficient to drive standard logic inputs or small LEDs with appropriate external pull-up.
Does LM8365BALMF22/NOPB require an external pull-up resistor on the RESET pin?
Yes - LM8365BALMF22/NOPB features an open-drain RESET output and requires an external pull-up resistor (e.g., 470 kΩ to VIN or 5 V) to define the high state. Without it, RESET remains floating and cannot assert a valid logic high, compromising system reset integrity.
LM8365BALMF22/NOPB 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:
- 2.2V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM8365BALMF22/NOPB FAQ
1.How can I place an order for LM8365BALMF22/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM8365BALMF22/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 LM8365BALMF22/NOPB reliable?
The price and inventory of LM8365BALMF22/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM8365BALMF22/NOPB is usually 5 days.
3.What payment methods are accepted for LM8365BALMF22/NOPB?
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4.How is shipping managed for LM8365BALMF22/NOPB?
LM8365BALMF22/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM8365BALMF22/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 LM8365BALMF22/NOPB?
For technical support, including LM8365BALMF22/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM8365BALMF22/NOPB requirements.
6.How does Aetrix verify that LM8365BALMF22/NOPB is sourced from the original manufacturer or authorized distributors?
All LM8365BALMF22/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 LM8365BALMF22/NOPB meets industry standards.
7.What is the process for return or replacement of LM8365BALMF22/NOPB?
All LM8365BALMF22/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM8365BALMF22/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 LM8365BALMF22/NOPB part is unused and in its original packaging.
Return procedure for LM8365BALMF22/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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