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Analog Devices Inc./Maxim Integrated MAX6430EGUS-T
- Part No.:
- MAX6430EGUS-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6430EGUS-T.pdf
- Description:
- IC BAT MON MULT-CHEM 2C SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
The MAX6430EGUS-T from Maxim Integrated is a dual-output, factory-trimmed battery monitor IC for single Li+ or multi-cell alkaline/NiMH/NiCd power supplies, featuring two independent low-battery outputs (LBOH and LBOL), 140ms minimum timeout period, ±2.5% threshold accuracy over temperature, and 1µA typical supply current. It operates from 1.6V to 5.5V and is used in portable medical devices and cordless phones to enable three-state battery management: normal operation, low-power mode, and system shutdown.
For engineers reviewing the MAX6430EGUS-T datasheet, MAX6430EGUS-T pinout, MAX6430EGUS-T application, or MAX6430EGUS-T equivalent, this page delivers verified electrical parameters, SOT143-4 package mapping, dual-threshold timing behavior, and real-world use cases in battery-powered embedded systems requiring stable low-power monitoring with hysteresis.
Technical Context
The MAX6430EGUS-T implements two independent comparators with internal reference and logic-controlled hysteresis, each driving a dedicated open-drain output (LBOH and LBOL). Its fixed thresholds are factory-trimmed - VHTH− and VLTH− define assertion points during voltage fall, while VHTH+ and VLTH+ (≈1.05× respective low thresholds) define deassertion points after 140ms stabilization delay.
It draws only 1µA from BATT, supports operation down to 1.0V battery voltage with guaranteed LBO logic state, and features immunity to short transients via built-in comparator overdrive tolerance. The device requires no external components and interfaces directly with microprocessor NMI or SHDN pins in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1µA typical - enables multi-year battery life in always-on monitoring applications. |
| Operating Voltage Range | 1.6V to 5.5V - supports single Li+ (2.7–4.2V), two-cell alkaline (2.0–3.2V), or three-cell NiMH (3.0–4.5V) without external regulation. |
| Low-Battery Timeout Period | 140ms minimum - prevents premature wake-up by ensuring supply stabilization before enabling processor or DC/DC converter. |
| Threshold Accuracy | ±2.5% over −40°C to +85°C - guarantees consistent trip points across industrial temperature range without calibration. |
| Output Type | Open-drain LBOH and LBOL - allows level-shifting up to 5.5V, enabling interface with higher-voltage microcontrollers independent of BATT. |
| Minimum Valid BATT | 1.0V - ensures reliable LBO logic state even during deep discharge, critical for graceful system shutdown. |
Pinout & Package
MAX6430EGUS-T is housed in a 4-pin SOT143-4 package (3.0mm × 1.7mm × 1.3mm), lead-free, RoHS-compliant, and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BATT | Battery voltage input and power supply | Direct connection to battery anode; powers internal circuitry and sets comparator reference baseline. |
| 2 - LBOH | Active-low open-drain high-threshold output | Asserts when BATT falls below factory-trimmed VHTH−; signals "weak battery" for low-power mode entry. |
| 3 - GND | Ground reference | Common return path for all internal circuits and external pull-up resistors on LBOH/LBOL. |
| 4 - LBOL | Active-low open-drain low-threshold output | Asserts when BATT falls below factory-trimmed VLTH−; signals "empty battery" to trigger system disable or shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent low-battery outputs | LBOH and LBOL provide separate, hysteresis-stabilized signals for "weak" and "empty" battery states - eliminates need for external logic or firmware polling. |
| Factory-trimmed thresholds | VHTH−/VHTH+ and VLTH−/VLTH+ set at production - removes resistor-divider design effort and layout sensitivity in space-constrained portable designs. |
| 140ms timeout with hysteresis | Guaranteed minimum delay between threshold crossing and output deassertion - prevents chattering during battery recovery after load removal. |
| 1µA supply current | Enables continuous monitoring in coin-cell-powered devices for >10 years at 10µA average system budget. |
| Valid operation down to 1.0V BATT | Ensures deterministic LBO logic state even during final discharge phase - supports fail-safe shutdown before brownout. |
Applications
| Portable Medical Devices | Cordless Phones |
|---|---|
Use Scenario: Battery-powered glucose meter with LCD display and Bluetooth LE transmission. IC Role / Device Role / Timing Role: Dual-threshold monitor triggers LCD dimming at 3.2V (LBOH) and disables BLE radio at 2.8V (LBOL) to extend usable runtime. Use Value: Enables precise, hardware-based state transitions without MCU intervention - reduces firmware complexity and improves reliability under varying load conditions. |
Use Scenario: DECT cordless phone base station with rechargeable NiMH pack. IC Role / Device Role / Timing Role: LBOH warns MCU of declining charge (e.g., <3.0V), prompting voice prompt; LBOL (<2.6V) initiates automatic charger enable and handset disable. Use Value: Eliminates software-based voltage sampling and ADC overhead - saves MCU cycles and ensures deterministic response during fast discharge events. |
| Cell Phones (Legacy) | Electronic Toys |
Use Scenario: Feature phone with removable Li+ battery and backlight control. IC Role / Device Role / Timing Role: LBOH asserts at 3.4V to reduce backlight brightness; LBOL asserts at 3.0V to suspend non-critical peripherals and enter sleep mode. Use Value: Provides hardware-enforced power-state sequencing - avoids uncontrolled resets due to undervoltage and extends talk time by 12–18%. |
Use Scenario: Motorized toy car with dual AA alkaline cells and sound IC. IC Role / Device Role / Timing Role: LBOH dims LED indicators at 2.4V; LBOL cuts motor driver enable at 2.0V to prevent erratic behavior and preserve battery capacity for safe stop. Use Value: Delivers predictable end-of-life behavior without firmware dependency - critical for consumer safety and brand reputation in low-cost electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6431EGUS-T | Same SOT143-4 package and dual open-drain outputs, but uses active-low push-pull LBOH and open-drain LBOL - different drive capability and voltage referencing. | Requires BATT-referenced pull-ups for LBOH; less flexible for mixed-voltage interfacing than MAX6430EGUS-T's dual open-drain architecture. | Select MAX6431EGUS-T only if push-pull drive for high-speed LBOH is required and system ground noise is minimal. |
| TLV7032IDGKR | General-purpose dual comparator (not battery-specific); no built-in hysteresis, timeout, or factory-trimmed thresholds - requires external resistors, RC timing, and reference. | Suitable only for custom battery monitor designs where flexibility outweighs BOM count and validation effort; lacks guaranteed 1µA quiescent current. | Choose TLV7032IDGKR only for prototyping or highly differentiated products where full threshold programmability justifies added design complexity. |
Compared with MAX6431EGUS-T and TLV7032IDGKR, the MAX6430EGUS-T delivers plug-and-play dual-threshold monitoring with zero external components, guaranteed sub-µA operation, and production-ready hysteresis - reducing time-to-market and qualification risk in high-volume portable electronics.
Availability
MAX6430EGUS-T is available at Aetrix Electronics and suitable for portable medical devices, cordless phones, legacy cell phones, and electronic toys requiring stable component supply with long-term lifecycle support and traceable sourcing.
Supply support for MAX6430EGUS-T 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, power management, and interface solutions for industrial, medical, and portable applications.
The MAX6427–MAX6438 family was designed specifically for ultra-low-power, hardware-based battery state monitoring in space- and energy-constrained portable electronics - eliminating reliance on MCU ADCs and firmware polling.
FAQ
What is the function of the two outputs on the MAX6430EGUS-T?
The MAX6430EGUS-T provides two independent open-drain outputs: LBOH asserts when battery voltage falls below the factory-trimmed high-threshold (VHTH−), signaling "weak battery" for low-power mode entry; LBOL asserts at the lower factory-trimmed threshold (VLTH−), signaling "empty battery" to initiate system shutdown. Both outputs remain asserted for ≥140ms after voltage recovery to prevent chatter.
Does the MAX6430EGUS-T require external resistors or capacitors?
No, the MAX6430EGUS-T requires no external components. As a factory-trimmed dual-threshold monitor in the MAX6430/MAX6431/MAX6432 series, it integrates precision references, comparators, hysteresis logic, and timeout circuitry - all powered directly from BATT and referenced to GND.
What is the minimum battery voltage at which the MAX6430EGUS-T remains functional?
The MAX6430EGUS-T guarantees valid logic states on LBOH and LBOL down to BATT = 1.0V, per its Absolute Maximum Ratings and Electrical Characteristics table. This ensures reliable shutdown signaling even during deep discharge of alkaline or NiMH cells.
Can the MAX6430EGUS-T be used with lithium-ion, alkaline, and NiMH batteries?
Yes - the MAX6430EGUS-T supports single-cell Li+ (2.7–4.2V), two-cell alkaline (2.0–3.2V), and three-cell NiMH/NiCd (3.0–4.5V) configurations. Its 1.6V to 5.5V operating range and factory-trimmed thresholds (e.g., 2.6V/3.3V or 3.0V/3.6V variants) cover these chemistries without recalibration.
How does the 140ms timeout period improve system reliability?
The 140ms minimum timeout period ensures that LBOH and LBOL remain asserted until battery voltage stabilizes after transient load removal - preventing false "recovery" signals that could re-enable power converters or processors prematurely. This eliminates chattering and ensures robust state transitions in real-world battery discharge profiles.
MAX6430EGUS-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 2
- Fault Protection:
- -
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6430EGUS-T FAQ
1.How can I place an order for MAX6430EGUS-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6430EGUS-T 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 MAX6430EGUS-T reliable?
The price and inventory of MAX6430EGUS-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6430EGUS-T is usually 5 days.
3.What payment methods are accepted for MAX6430EGUS-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6430EGUS-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6430EGUS-T?
MAX6430EGUS-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6430EGUS-T 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 MAX6430EGUS-T?
For technical support, including MAX6430EGUS-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6430EGUS-T requirements.
6.How does Aetrix verify that MAX6430EGUS-T is sourced from the original manufacturer or authorized distributors?
All MAX6430EGUS-T 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 MAX6430EGUS-T meets industry standards.
7.What is the process for return or replacement of MAX6430EGUS-T?
All MAX6430EGUS-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6430EGUS-T, 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 MAX6430EGUS-T part is unused and in its original packaging.
Return procedure for MAX6430EGUS-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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