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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:16,366
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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, and features Beyond-the-Rails™ inputs extending 200mV beyond VEE and VCC. Its rail-to-rail output swing supports up to 5mA sink load and enables mixed-voltage logic interfacing in 2-cell battery management.
For engineers reviewing the MAX9026EBT+T datasheet, MAX9026EBT+T pinout, MAX9026EBT+T application, or MAX9026EBT+T equivalent, this page delivers verified electrical parameters, UCSP package layout, real-world use cases in battery monitoring and telemetry, and two validated alternative comparators with documented functional and interface differences.
Technical Context
The MAX9026EBT+T integrates a precision 1.236V ±1% bandgap reference (40ppm/°C TC) with an open-drain output stage capable of sinking up to 50mA while operating down to +1.8V. Its input common-mode range spans VEE −0.2V to VCC +0.2V, enabling sensing at ground or supply rails without level-shifting.
Internal 4mV hysteresis prevents oscillation on slow-moving or noisy inputs, and crowbar-current-free switching minimizes supply glitches-critical for battery life in portable medical instruments and remote telemetry nodes where dynamic power integrity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports full discharge curve of 2-cell alkaline (1.8V end-of-life) and Li-ion single-cell systems. |
| Supply Current | 1.0µA typical at +25°C - enables >1 million hours of operation on a 2000mAh AA battery pair (per Table 1). |
| Reference Voltage | 1.236V ±1% (±12.36mV) - stable threshold for precise battery voltage monitoring without external reference. |
| Input Offset Voltage | ≤5mV at +25°C - ensures accurate trip-point resolution when comparing against internal reference. |
| Propagation Delay | 7µs high-to-low, 12µs low-to-high (VCC = 1.8V, RPULLUP = 100kΩ) - sufficient speed for battery state-of-charge polling at <100Hz. |
| Output Leakage | ≤1µA at VO = 5.5V - preserves pull-up network efficiency in mixed-voltage logic translation. |
| Input Common-Mode Range | VEE −0.2V to VCC +0.2V - allows direct sensing of signals referenced to ground or VCC in portable systems. |
Pinout & Package
MAX9026EBT+T uses a 6-bump UCSP package (1.0mm × 1.52mm, bumps on bottom), RoHS-compliant, marked "ADC" on top. The die is flip-chip mounted; bump layout matches JEDEC MO-220 variant B6+1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | VCC | Positive supply input (1.8V–5.5V); bypass with 100nF ceramic if supply impedance >1Ω. |
| A2 | OUT | Open-drain output; requires external pull-up to any voltage ≤5.5V above VEE for mixed-voltage logic translation. |
| A3 | VEE | Negative supply (typically GND); must be connected - not floating - for proper reference and comparator operation. |
| B1 | IN+ | Noninverting input; accepts voltages from VEE −0.2V to VCC +0.2V; bias current ≤2nA over temperature. |
| B2 | REF | 1.236V ±1% reference output; sources/sinks ≤100nA; stable under 1nF decoupling (CREF = 1nF, BW = 10Hz–100kHz). |
| B3 | IN− | Inverting input; same voltage range and bias current specs as IN+; used with REF for fixed-threshold battery monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1.0µA supply current | Enables multi-year operation on coin cells or AA batteries in wireless sensor nodes and portable medical devices. |
| Integrated 1.236V ±1% reference | Eliminates need for external precision reference IC or resistor divider, reducing BOM count and layout area in space-constrained UCSP designs. |
| Open-drain output with 5.5V tolerance | Permits direct interface between 5V microcontrollers and 3V peripherals without level-shifters - ideal for logic-level translation. |
| Beyond-the-Rails™ input range | Supports direct sensing of signals at ground or supply rail without clamping diodes or external biasing networks. |
| Internal 4mV hysteresis | Prevents chatter during battery voltage transitions near cutoff thresholds, eliminating need for external hysteresis components. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Telemetry |
|---|---|
Use Scenario: Monitoring voltage of two-series alkaline cells (1.8V–3.0V) to trigger low-battery shutdown before system reset. IC Role / Device Role / Timing Role: Comparator compares cell voltage against internal 1.236V reference via resistive divider; open-drain output drives MCU interrupt line. Use Value: 1.0µA quiescent current extends usable battery life by >2× versus comparable comparators; UCSP footprint saves PCB area in compact handhelds. |
Use Scenario: Remote environmental sensor node powered by AA batteries, transmitting data every 5 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Wakes MCU when battery drops below 2.4V threshold; hysteresis prevents false wake-ups from transient noise. Use Value: Crowbar-current-free switching avoids supply glitches that could corrupt RF transmission timing; 1.8V operation ensures function until final battery depletion. |
| Medical Instrument Sensing | Mobile Logic-Level Translation |
Use Scenario: Portable glucose meter detecting electrode signal crossing zero during electrochemical measurement. IC Role / Device Role / Timing Role: Zero-crossing detector using IN− grounded and IN+ tied to transducer; open-drain output interfaces to 1.8V ADC controller. Use Value: Input range extending 200mV beyond rails allows direct connection to unbuffered analog front-end; sub-5mV offset ensures detection accuracy within ±1mV. |
Use Scenario: Converting 5V I²C clock/data lines from host processor to 3.3V PMIC control interface in smartphone power management. IC Role / Device Role / Timing Role: Dual-function device: reference provides stable 1.236V bias point; open-drain output pulls up to 3.3V rail for clean level shift. Use Value: Eliminates discrete level shifter IC and associated passives; 7µs propagation delay meets I²C standard timing budgets at 100kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9025EBT+T | Push-pull output (not open-drain); identical reference, supply current, and package. | Requires dedicated supply rail for output logic level; unsuitable for mixed-voltage wire-OR bus or level translation. | Select MAX9025EBT+T only when driving CMOS inputs directly from VCC and no pull-up flexibility is needed. |
| TLV3691IDCKR | 0.6µA supply current, no internal reference, SC70-6 package (2.0mm × 1.25mm), 1.8V–5.5V operation. | Lacks integrated reference; requires external voltage divider or reference for fixed-threshold monitoring. | Choose TLV3691IDCKR when lowest possible current dominates design and reference can be sourced externally or derived from system rail. |
Compared with MAX9026EBT+T, MAX9025EBT+T offers push-pull drive but forfeits mixed-voltage flexibility, while TLV3691IDCKR reduces current by 40% but adds BOM cost and layout complexity for reference generation-making MAX9026EBT+T optimal for self-contained, space-constrained battery monitors.
Availability
MAX9026EBT+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and portable medical instrument design requiring stable component supply across extended production lifecycles.
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 and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and portable systems.
The MAX9025–MAX9028 family was engineered specifically for nanopower battery monitoring and sensing in space-constrained, long-life portable electronics - emphasizing ultra-low ICC, rail-extending inputs, and integrated reference functionality.
FAQ
What is the maximum sink current capability of the MAX9026EBT+T output?
The MAX9026EBT+T open-drain output can sink up to ±50mA continuously, with short-circuit duration rated for 10 seconds. At VCC = 5V and ISINK = 6mA, VOL is typically 250–350mV over temperature - enabling direct drive of LEDs or small MOSFET gates without external buffers. This capability is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.
Does the MAX9026EBT+T require an external bypass capacitor on the REF pin?
The MAX9026EBT+T does not require a REF bypass capacitor under normal conditions, as its internal 1.236V reference exhibits low noise (29µVRMS, 10Hz–100kHz) and stable regulation. However, in noisy environments or systems with fast VCC transients, a 1nF–10nF ceramic capacitor from REF to VEE is recommended per the Applications Information section - ensuring reference stability during power-up and EMI events.
Can the MAX9026EBT+T operate with VEE = -0.3V relative to system ground?
No. The MAX9026EBT+T specifies VEE as the negative supply rail and defines absolute maximum ratings with VEE as the reference - e.g., input voltage range extends to VEE −0.2V. Operating VEE at -0.3V violates the −0.3V absolute minimum on IN+, IN−, and REF pins and risks latch-up or damage. VEE must be at or above ground unless explicitly supported by a negative-supply variant (which MAX9026EBT+T is not).
How does the internal hysteresis of the MAX9026EBT+T affect battery voltage threshold accuracy?
The MAX9026EBT+T includes 4mV of internal input-referred hysteresis, creating a 4mV window between rising and falling trip points. When monitoring a 2-cell alkaline battery via a resistive divider tied to REF, this hysteresis prevents oscillation near the 2.4V shutdown threshold - but introduces ±2mV uncertainty in the exact transition voltage. Designers must account for this in threshold calculations, especially when combined with ±12.36mV reference tolerance and ±5mV input offset.
Is the MAX9026EBT+T compatible with lead-free reflow soldering processes?
Yes. The "+T" suffix in MAX9026EBT+T denotes a lead(Pb)-free/RoHS-compliant UCSP package, qualified for standard Pb-free reflow profiles. The bump temperature rating is +235°C, matching IPC/JEDEC J-STD-020D requirements. Reflow must follow Maxim's recommended profile in Application Note 1891 - including peak temperature ≤260°C, time above liquidus 60–150 seconds, and ramp rates within specified limits to prevent delamination.
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:
- Active
- 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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