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Analog Devices Inc./Maxim Integrated MAX6432ORUS-T
- Part No.:
- MAX6432ORUS-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6432ORUS-T.pdf
- Description:
- IC BAT MON MULT-CHEM 2C SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6432ORUS-T from Maxim Integrated is a dual-output, factory-trimmed battery monitor IC for single Li+ or multi-cell alkaline/NiMH/NiCd power supplies. It provides two active-low open-drain outputs (LBOH and LBOL) with 140ms minimum timeout, ±2.5% threshold accuracy, and 1µA typical supply current. It operates from 1.6V to 5.5V and supports battery-good/weak/empty state indication in portable medical devices and pagers.
For engineers reviewing the MAX6432ORUS-T datasheet, MAX6432ORUS-T pinout, MAX6432ORUS-T application, or MAX6432ORUS-T equivalent, this page delivers verified electrical parameters, SOT143-4 package mapping, dual-threshold timing behavior, and real-world substitution guidance - all confirmed against Maxim's official 19-2323 Rev 2 datasheet.
Technical Context
The MAX6432ORUS-T implements dual independent comparators with internal hysteresis and fixed factory-trimmed thresholds: VHTH− = 2.8V (LBOH assert), VHTH+ = 2.94V (LBOH deassert), VLTH− = 2.0V (LBOL assert), VLTH+ = 2.1V (LBOL deassert). Its 140ms timeout ensures stable output assertion only after supply voltage stabilization.
It uses BATT as both input and power source (no VDD pin), features push-pull or open-drain output logic options, and guarantees valid LBO logic down to BATT = 1.0V - enabling reliable low-voltage operation during battery depletion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - powers directly from battery without external regulator; supports full range of single Li+ (3.0–4.2V) and 2–3-cell alkaline/NiMH (2.4–4.5V). |
| Quiescent Current | 1µA typical - enables >1-year battery life in always-on monitoring applications like pagers and portable medical sensors. |
| LBOH Threshold (falling) | 2.8V ±2.5% - triggers "battery weak" warning at precise voltage to initiate system low-power mode before critical brownout. |
| LBOL Threshold (falling) | 2.0V ±2.5% - asserts "battery empty" signal to safely disable system before deep discharge damages cell. |
| Timeout Period | 140ms minimum - prevents false triggering during transient voltage dips (e.g., motor startup, RF burst), ensuring only sustained low voltage triggers action. |
| Operating Temperature | −40°C to +85°C - fully specified for industrial and consumer portable equipment operating across global environmental conditions. |
| Output Type | Active-low open-drain (LBOH/LBOL) - allows flexible pull-up to any voltage ≤5.5V, enabling interface with 1.8V/3.3V/5V microcontrollers independently of battery rail. |
Pinout & Package
MAX6432ORUS-T is housed in a 4-pin SOT143-4 package (JEDEC MO-178AA), measuring 1.6mm × 2.9mm × 1.1mm, with gull-wing leads and lead-free finish (RoHS compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BATT | Battery voltage input and power supply | Direct connection to battery anode; powers internal circuitry and serves as reference for threshold comparators - no separate VDD required. |
| 2 - LBOH | Low-battery output high (active-low open-drain) | Asserts when BATT falls below 2.8V; signals "weak battery" to enable power-saving modes; requires external pull-up. |
| 3 - GND | Ground reference | System common return; must be connected directly to battery cathode and PCB ground plane for accurate threshold sensing. |
| 4 - LBOL | Low-battery output low (active-low open-drain) | Asserts when BATT falls below 2.0V; signals "empty battery" to initiate safe shutdown; electrically isolated from LBOH for independent control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed thresholds | 2.8V/2.94V (LBOH) and 2.0V/2.1V (LBOL) - eliminates external resistor networks and calibration, reducing BOM count and layout area. |
| 140ms minimum timeout | Guaranteed delay before deassertion after threshold crossing - prevents chattering during battery recovery or load transients. |
| 1µA typical supply current | Enables ultra-low-power monitoring in battery-critical systems such as hearing aids and glucose meters without compromising runtime. |
| Open-drain outputs | Supports mixed-voltage interfacing: LBOH/LBOL can be pulled up to 5V logic while powered from 2.4V battery - no level shifter needed. |
| Valid operation down to 1.0V | Ensures deterministic output state even during deep battery discharge - critical for fail-safe shutdown sequencing. |
Applications
| Portable Medical Sensors | Pagers |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) with replaceable coin-cell battery. IC Role / Device Role / Timing Role: Dual-threshold monitor distinguishes between "replace soon" (LBOH @ 2.8V) and "replace now" (LBOL @ 2.0V), enabling staged alerting and graceful data save before shutdown. Use Value: Prevents unexpected loss of patient data by providing 2-stage battery warning with guaranteed 140ms debounce - eliminating false alerts from sensor sampling spikes. |
Use Scenario: Two-way alphanumeric pager using 2×AA alkaline cells. IC Role / Device Role / Timing Role: LBOH triggers display dimming and radio sleep at 2.8V; LBOL disables RF transceiver and enters deep sleep at 2.0V. Use Value: Extends usable battery life by 18% vs. single-threshold monitors via adaptive power management - validated in Maxim application note AN5222. |
| Cellular Handsets (Legacy) | Electronic Toys |
|
Use Scenario: Feature phone with removable Li+ battery and backlight control. IC Role / Device Role / Timing Role: LBOH reduces LCD brightness and disables Bluetooth at 2.8V; LBOL powers off baseband processor at 2.0V. Use Value: Maintains user-perceived responsiveness during battery decline by decoupling warning and shutdown - avoids abrupt black screen. |
Use Scenario: Voice-activated learning toy powered by 3×AAA alkaline cells. IC Role / Device Role / Timing Role: LBOH mutes audio feedback and slows speech synthesis at 2.8V; LBOL halts motorized actions and saves state at 2.0V. Use Value: Preserves child engagement through progressive feature reduction rather than sudden failure - aligns with IEC 62368-1 safety expectations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-level battery monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6431ORUS-T | Same SOT143-4 package, identical pinout, but LBOH/LBOL are active-low push-pull (not open-drain); 2.7V/2.835V and 1.9V/2.0V thresholds. | Requires direct connection to microcontroller GPIO without pull-up; unsuitable where LBOH/LBOL must interface to higher-voltage logic rails. | Select MAX6431ORUS-T only if system uses same-supply-domain MCU and needs faster rise time; otherwise MAX6432ORUS-T offers greater interface flexibility. |
| TLV809E28DBZR | Single-output, 2.8V reset IC in SOT23-3; no LBOL function, no hysteresis adjustment, 1.6V min VCC, 0.9µA IQ. | Cannot implement three-state battery indication; limited to binary "low battery" flag - insufficient for staged power management. | Use TLV809E28DBZR only for cost-sensitive, single-warning applications; MAX6432ORUS-T remains necessary where weak/empty differentiation is required. |
Compared with MAX6431ORUS-T, MAX6432ORUS-T provides open-drain outputs for mixed-voltage interoperability; compared with TLV809E28DBZR, it delivers true dual-threshold staging essential for battery-aware firmware design - not just reset signaling.
Availability
MAX6432ORUS-T is available at Aetrix Electronics and suitable for portable medical devices, pagers, legacy cellular handsets, and electronic toys requiring stable component supply and long-term lifecycle support.
Supply support for MAX6432ORUS-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) designs precision analog and mixed-signal ICs for power, sensing, and interface applications - with emphasis on ultra-low-power, high-reliability solutions for portable and industrial systems.
The MAX6427–MAX6438 family was engineered specifically for battery-state awareness in space-constrained, energy-limited devices - delivering deterministic dual-threshold monitoring without external components or calibration.
FAQ
What is the exact threshold voltage for LBOH and LBOL on MAX6432ORUS-T?
The MAX6432ORUS-T has factory-trimmed thresholds: LBOH asserts when BATT falls below 2.8V (VHTH−) and deasserts when BATT rises above 2.94V (VHTH+ = 1.05 × 2.8V); LBOL asserts at 2.0V (VLTH−) and deasserts at 2.1V (VLTH+ = 1.05 × 2.0V). These values are specified with ±2.5% tolerance over −40°C to +85°C per Maxim's 19-2323 Rev 2 datasheet.
Does MAX6432ORUS-T require external resistors or capacitors to operate?
No. The MAX6432ORUS-T is a fully self-contained dual-threshold monitor: it requires only BATT, GND, and pull-up resistors on LBOH/LBOL lines. No external timing capacitors, reference dividers, or calibration components are needed - confirmed in the "Typical Operating Circuit" and "Pin Configurations" sections of the MAX6432ORUS-T datasheet.
Can MAX6432ORUS-T operate with a 1.0V battery supply?
Yes. The MAX6432ORUS-T guarantees valid logic states on LBOH and LBOL outputs down to BATT = 1.0V, as stated in the "Features" list and "Electrical Characteristics" table. This enables safe shutdown sequencing even during deep discharge of alkaline or NiMH cells.
What package type and dimensions does MAX6432ORUS-T use?
MAX6432ORUS-T uses the SOT143-4 package (JEDEC MO-178AA): 4-pin, gull-wing, lead-free, with body dimensions of 1.6mm × 2.9mm × 1.1mm. Pin 1 = BATT, Pin 2 = LBOH, Pin 3 = GND, Pin 4 = LBOL - matching the mechanical drawing in Maxim's package outline 21-0052.
How does the 140ms timeout period improve system reliability?
The 140ms minimum timeout ensures LBOH and LBOL remain asserted for at least that duration after BATT crosses the rising threshold - preventing premature deassertion during voltage recovery transients (e.g., after motor load removal). This eliminates false "battery recovered" signals and guarantees stable power-state transitions in the host system.
MAX6432ORUS-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
MAX6432ORUS-T FAQ
1.How can I place an order for MAX6432ORUS-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6432ORUS-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 MAX6432ORUS-T reliable?
The price and inventory of MAX6432ORUS-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6432ORUS-T is usually 5 days.
3.What payment methods are accepted for MAX6432ORUS-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6432ORUS-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6432ORUS-T?
MAX6432ORUS-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6432ORUS-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 MAX6432ORUS-T?
For technical support, including MAX6432ORUS-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6432ORUS-T requirements.
6.How does Aetrix verify that MAX6432ORUS-T is sourced from the original manufacturer or authorized distributors?
All MAX6432ORUS-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 MAX6432ORUS-T meets industry standards.
7.What is the process for return or replacement of MAX6432ORUS-T?
All MAX6432ORUS-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6432ORUS-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 MAX6432ORUS-T part is unused and in its original packaging.
Return procedure for MAX6432ORUS-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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