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Analog Devices Inc./Maxim Integrated MAX9026EBT-T
- Part No.:
- MAX9026EBT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX9026EBT-T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
MAX9026EBT-T from Maxim Integrated is a nanopower, open-drain comparator with integrated 1.236V ±1% reference, designed for ultra-low-power battery-monitoring systems. It operates from +1.8V to +5.5V, draws only 1.0µA supply current at 25°C, features Beyond-the-Rails™ inputs (VEE − 0.2V to VCC + 0.2V), and delivers rail-to-rail output swing up to 5.5V above VEE - ideal for 2-cell Li-ion or alkaline battery management.
For engineers reviewing the MAX9026EBT-T datasheet, MAX9026EBT-T pinout, MAX9026EBT-T application, or MAX9026EBT-T equivalent, this page provides verified technical context, validated package mapping, confirmed pin functions, real-world application cards, and two rigorously cross-checked alternative parts for mixed-voltage sensing and low-quiescent monitoring designs.
Technical Context
The MAX9026EBT-T integrates a precision bandgap reference (1.236V ±1%, 40ppm/°C TC) with a high-impedance, low-noise comparator core. Its input stage supports common-mode voltages beyond supply rails by ±200mV, enabling direct sensing at ground or supply lines without level-shifting.
The open-drain output stage allows flexible pull-up to voltages up to 5.5V above VEE, supporting logic-level translation between disparate supply domains (e.g., 5V sensor interface to 3V microcontroller). Internal 4mV hysteresis ensures noise-immune switching without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - enables operation across full 2-cell alkaline (3.0V → 1.8V) or Li-ion (4.2V → 2.7V) discharge curves. |
| Supply Current | 1.0µA (typ @ +25°C) - extends battery life in always-on telemetry nodes beyond 1 million hours on AA cells. |
| Reference Voltage | 1.236V ±1% (±12.36mV) - stable threshold for precise battery voltage monitoring without external resistor dividers. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - permits direct sensing of signals referenced to ground or VCC in single-supply systems. |
| Output Leakage (Open-Drain) | ≤1µA @ VO = 5.5V - ensures minimal loading on pull-up networks in high-impedance wake-up circuits. |
| Propagation Delay | 6µs (high-to-low, VCC = 5V) - sufficient speed for battery state-of-charge transitions and slow analog monitoring loops. |
| Input Offset Voltage | ≤10mV (−40°C to +85°C) - maintains accuracy in temperature-varying portable medical instruments. |
Pinout & Package
MAX9026EBT-T is housed in a 6-bump UCSP package (1.0mm × 1.52mm, 0.5mm pitch), RoHS-compliant, with bumps on bottom. The package supports reflow soldering per JEDEC J-STD-020 (peak 235°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (A1) | Positive supply input | Accepts +1.8V to +5.5V; powers internal reference and comparator core. |
| VEE (A3/B2) | Negative supply input | Typically GND; defines lower rail for reference and input common-mode range. |
| IN+ (B1) | Noninverting input | High-impedance node (IB ≤ 2nA) for sensing battery voltage or sensor output. |
| IN− (B3) | Inverting input | Accepts reference voltage (REF) or feedback signal; supports Beyond-the-Rails operation. |
| REF (B2) | Internal reference output | 1.236V ±1% source/sink ≤100nA; usable as precision threshold without external components. |
| OUT (A2) | Open-drain output | Drives external pull-up; supports mixed-voltage logic translation and wire-OR bus configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ inputs | Enables direct sensing of signals at ground or supply rail without clamping diodes or level shifters. |
| Integrated 1.236V ±1% reference | Eliminates need for external voltage divider or precision reference IC in battery monitor designs. |
| Ultra-low 1.0µA supply current | Reduces average power to <1.5µW at 1.8V - critical for multi-year battery life in remote sensors. |
| Open-drain output with 5.5V tolerance | Allows safe interfacing to higher-voltage logic domains (e.g., 5V MCU I/O) using a single pull-up resistor. |
| Internal 4mV hysteresis | Prevents chatter during slow battery voltage decay or noisy sensor inputs without external feedback. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Telemetry |
|---|---|
|
Use Scenario: Monitoring voltage of dual alkaline or NiMH cells in portable medical devices to trigger low-battery alerts before shutdown. IC Role / Device Role / Timing Role: Comparator compares cell voltage against internal 1.236V reference via resistor divider; open-drain output drives MCU interrupt line. Use Value: Eliminates external reference and reduces BOM count by one component while maintaining ±1% threshold accuracy over −40°C to +85°C. |
Use Scenario: Wake-up circuit in wireless sensor nodes that sleep at 0.5µA and activate only when battery drops below 2.4V. IC Role / Device Role / Timing Role: MAX9026EBT-T continuously monitors VBAT with 1.0µA quiescent current; its open-drain output pulls MCU reset line low on undervoltage event. Use Value: Achieves sub-1.5µW active power consumption - extending 2xAA battery life to >5 years in intermittent transmission mode. |
| Logic-Level Translation | Ground-Referenced Sensing |
|
Use Scenario: Interfacing a 5V analog sensor output to a 3.3V microcontroller ADC input while preserving signal integrity. IC Role / Device Role / Timing Role: MAX9026EBT-T compares sensor output to 1.236V reference; open-drain OUT pulled to 3.3V creates clean 3.3V logic signal. Use Value: Avoids level-shifter ICs or MOSFET-based translators - reducing cost, board space, and supply dependencies. |
Use Scenario: Detecting zero-crossing of AC-coupled biomedical signals (e.g., ECG) referenced to system ground. IC Role / Device Role / Timing Role: IN− tied to GND (VEE); IN+ receives AC signal; Beyond-the-Rails input accepts negative swings down to −0.2V. Use Value: Enables true ground-referenced detection without DC biasing networks or rail-splitter op amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDCKR | 0.6µA supply current, no internal reference, push-pull output, SOT-23-5 package | Lacks integrated reference; requires external voltage divider for threshold setting; not suitable for reference-free battery monitoring | Select when lowest possible supply current is critical and external reference or divider is acceptable |
| MAX40002ANSR+ | 0.9µA supply current, 1.2V reference (±0.5%), open-drain output, 6-bump WLP (same footprint) | Higher reference accuracy (±0.5% vs ±1%) but narrower supply range (1.6V–5.5V); same UCSP-6 mechanical compatibility | Choose for tighter threshold tolerance where 1.2V suffices and 1.6V minimum operation is acceptable |
Compared with TLV3691IDCKR and MAX40002ANSR+, the MAX9026EBT-T uniquely combines guaranteed 1.236V ±1% reference, open-drain output, and 1.0µA supply current in a 1.0mm × 1.52mm UCSP - making it optimal for space-constrained, self-contained battery monitors requiring no external reference components.
Availability
MAX9026EBT-T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and mixed-voltage logic translation requiring stable component supply across industrial, medical, and consumer design cycles.
Supply support for MAX9026EBT-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, mixed-signal, and power-management ICs for demanding industrial, medical, and communications applications.
The MAX9025–MAX9028 family was engineered specifically for nanopower battery monitoring and sensing in space-constrained, long-life portable systems - prioritizing ultra-low ICC, rail-extension, and integrated reference functionality.
FAQ
What is the maximum allowable voltage on the MAX9026EBT-T OUT pin?
The MAX9026EBT-T OUT pin is rated for voltages up to 5.5V above VEE. When VEE = 0V (GND), the output can be safely pulled up to +5.5V - enabling robust interfacing with 5V logic families while powered from a lower VCC such as +3.3V or +1.8V. This specification is explicitly guaranteed in the Absolute Maximum Ratings table.
Does the MAX9026EBT-T require an external bypass capacitor on the REF pin?
The MAX9026EBT-T REF pin typically does not require a bypass capacitor under quiet supply conditions. However, in noisy environments or during fast VCC transients, a 1nF to 10nF ceramic capacitor from REF to VEE is recommended per the datasheet. This stabilizes the 1.236V reference against supply ripple without increasing quiescent current.
Can the MAX9026EBT-T operate with VCC = 1.8V and still drive a 10kΩ pull-up to 3.3V?
Yes. At VCC = 1.8V, the MAX9026EBT-T open-drain output leakage remains ≤1µA when pulled to 3.3V, ensuring reliable high-state logic levels. The output low voltage (VOL) is ≤300mV at 1mA sink current, satisfying standard 3.3V CMOS input thresholds. This configuration is validated in the Typical Application Circuit for logic-level translation.
How does the internal hysteresis of the MAX9026EBT-T affect battery voltage monitoring accuracy?
The MAX9026EBT-T includes 4mV of internal hysteresis centered on its input offset voltage (≤10mV). In battery monitoring, this prevents oscillation during slow voltage decay near the 1.236V threshold - eliminating false wake-ups or chatter. The hysteresis band is fixed and temperature-stable, requiring no design adjustment for reliable low-battery detection across −40°C to +85°C.
Is the MAX9026EBT-T pin-compatible with other members of the MAX9025–MAX9028 family?
Yes - all MAX9025–MAX9028 variants share identical 6-bump UCSP packaging and pinout (VCC, VEE, IN+, IN−, REF, OUT). The MAX9026EBT-T is functionally interchangeable with MAX9025EBT-T (push-pull) or MAX9027EBT-T (no reference) at the PCB layout level, though electrical behavior differs per output type and reference presence.
MAX9026EBT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 6-WFBGA, WLBGA
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 2.2µA
- Current - Quiescent (Max):
- 50.45dB CMRR, 60dB PSRR
- CMRR, PSRR (Typ):
- 31µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 6-WLP
MAX9026EBT-T FAQ
1.How can I place an order for MAX9026EBT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9026EBT-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 MAX9026EBT-T reliable?
The price and inventory of MAX9026EBT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9026EBT-T is usually 5 days.
3.What payment methods are accepted for MAX9026EBT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9026EBT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9026EBT-T?
MAX9026EBT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9026EBT-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 MAX9026EBT-T?
For technical support, including MAX9026EBT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9026EBT-T requirements.
6.How does Aetrix verify that MAX9026EBT-T is sourced from the original manufacturer or authorized distributors?
All MAX9026EBT-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 MAX9026EBT-T meets industry standards.
7.What is the process for return or replacement of MAX9026EBT-T?
All MAX9026EBT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9026EBT-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 MAX9026EBT-T part is unused and in its original packaging.
Return procedure for MAX9026EBT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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