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Analog Devices Inc./Maxim Integrated MAX9025EBT+T
- Part No.:
- MAX9025EBT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX9025EBT+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,297
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Product details
Overview
MAX9025EBT+T from Maxim Integrated is a nanopower comparator with integrated 1.236V ±1% reference, push-pull output, and Beyond-the-Rails™ input range extending 200mV beyond supply rails. It operates from +1.8V to +5.5V, draws only 1.0µA supply current at +25°C, and delivers rail-to-rail output swing with ±5mA drive capability - ideal for 2-cell battery monitoring in portable medical instruments and telemetry systems.
For engineers reviewing the MAX9025EBT+T datasheet, MAX9025EBT+T pinout, MAX9025EBT+T application, or MAX9025EBT+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated UCSP package mapping, confirmed pin functions, and two rigorously cross-checked alternative comparators for low-power battery management designs.
Technical Context
The MAX9025EBT+T integrates a precision bandgap reference (1.236V ±1%, 40ppm/°C TC) and a crowbar-current-free push-pull output stage that limits supply-current surges during switching - eliminating typical supply glitches and reducing need for large bypass capacitors. Its input stage supports common-mode voltages from VEE − 0.2V to VCC + 0.2V, enabling direct sensing at ground or supply lines without level-shifting.
Internal 4mV hysteresis ensures clean switching with slow-moving or noisy inputs, while propagation delays are tightly specified: tPD− = 6µs (VCC = 5V), tPD+ = 28µs (VCC = 5V), with minimal variation over temperature (−40°C to +85°C) and supply voltage (1.8V–5.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - enables direct operation from single Li-ion or dual alkaline cells without regulation. |
| Supply Current | 1.0µA typical at +25°C - extends battery life in always-on 2-cell monitoring applications beyond 1 million hours. |
| Input Offset Voltage | 0.3mV typical (max 10mV over temp) - ensures accurate threshold detection in low-voltage battery end-of-life sensing. |
| Reference Voltage | 1.236V ±1% (1.205V–1.267V over temp) - stable internal threshold eliminates external reference component count and layout area. |
| Output Drive | ±5mA rail-to-rail swing - directly drives LED indicators, MOSFET gates, or logic inputs without external buffers. |
| Propagation Delay | tPD− = 6µs, tPD+ = 28µs (VCC = 5V) - supports fast response in battery voltage step-change detection without excessive power penalty. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows direct connection to battery terminals or ground-referenced sensors without resistive dividers. |
Pinout & Package
MAX9025EBT+T uses a 6-bump UCSP package (1.0mm × 1.52mm, top mark ADB), optimized for ultra-compact portable designs. Bumps are on bottom; pin numbering follows standard UCSP top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (B1) | Positive supply input | Accepts 1.8V–5.5V; powers both comparator core and internal reference. |
| VEE (A3) | Negative supply input / ground reference | Typically connected to system GND; defines lower rail for input/output swing. |
| IN+ (B2) | Noninverting input | Monitors battery voltage or sensor signal; supports common-mode range beyond rails. |
| IN− (B3) | Inverting input | Receives reference voltage (internal 1.236V) or external threshold; hysteresis centered here. |
| OUT (A2) | Push-pull output | Active-high/low digital output; sinks/sources up to ±5mA; no external pull-up required. |
| REF (A1) | Internal reference output | Provides 1.236V ±1% for IN−; can source/sink up to 100nA; bypass with 1nF if noise-sensitive. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ input range | Supports VCM = VEE − 0.2V to VCC + 0.2V - enables direct battery terminal sensing without level shifters or dividers. |
| Integrated 1.236V ±1% reference | Eliminates external reference IC or resistor divider, reducing BOM count and PCB area in space-constrained battery monitors. |
| Crowbar-current-free switching | Minimizes supply current spikes during output transitions - reduces need for bulk decoupling and improves battery efficiency. |
| Internal 4mV hysteresis | Prevents oscillation on slow or noisy inputs - ensures reliable state changes in low-power telemetry and medical sensor interfaces. |
| UCSP 1.0mm × 1.52mm package | Reduces footprint by >70% vs. SOT23-6 - critical for ultra-thin wearables and implantable device miniaturization. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Telemetry |
|---|---|
Use Scenario: Continuous voltage monitoring of dual alkaline or NiMH cells in remote environmental sensors. IC Role / Device Role / Timing Role: Comparator compares cell voltage against internal 1.236V reference to trigger low-battery alert when voltage drops below 1.8V per cell. Use Value: 1.0µA quiescent current enables >10-year battery life; Beyond-the-Rails inputs eliminate need for high-side sensing circuitry. |
Use Scenario: Wake-up trigger for sleep-mode microcontrollers in wireless soil moisture nodes. IC Role / Device Role / Timing Role: Detects threshold-crossing events from analog sensor outputs and asserts interrupt to MCU via push-pull OUT pin. Use Value: Internal hysteresis prevents false wake-ups from sensor noise; rail-to-rail output directly interfaces with 1.8V–3.3V MCU I/O. |
| Portable Medical Instruments | Logic-Level Translation |
Use Scenario: Power-good detection and battery health flag generation in handheld glucose meters. IC Role / Device Role / Timing Role: Uses REF pin as stable threshold and IN+ to monitor regulated supply; OUT drives status LED or fault latch. Use Value: ±1% reference accuracy ensures consistent trip point across temperature; UCSP package fits within tight enclosure constraints. |
Use Scenario: Bidirectional voltage translation between 5V host MCU and 3V peripheral in portable diagnostic tools. IC Role / Device Role / Timing Role: MAX9025EBT+T configured with REF as threshold and push-pull output driving 3V logic rail. Use Value: Eliminates external level shifter IC; 28µs tPD+ supports >30kHz signal rates in data acquisition paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9026EBT+T | Same UCSP-6 package and 1.236V reference, but open-drain output (no push-pull drive) | Requires external pull-up for logic interface; unsuitable for direct LED/MOSFET drive without added components | Select when mixed-voltage bus interfacing (e.g., 5V comparator driving 3V logic) is required |
| TLV3691IDCKR | 0.6µA supply current, no internal reference, SC70-5 package (larger than UCSP), 1.8V–5.5V operation | Lacks integrated reference - needs external voltage divider or reference; higher board area due to SC70 footprint | Select when lowest possible supply current is critical and reference can be supplied externally |
Compared with MAX9025EBT+T, MAX9026EBT+T trades push-pull drive for open-drain flexibility in multi-rail systems, while TLV3691IDCKR offers lower current at the cost of reference integration and package size - making MAX9025EBT+T optimal for self-contained, space-limited battery monitors.
Availability
MAX9025EBT+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and portable medical instrument designs requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.
Supply support for MAX9025EBT+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 management - delivering integrated reference, rail-compatible inputs, and glitch-free switching in sub-2mm² packages.
FAQ
What is the operating temperature range for MAX9025EBT+T?
The MAX9025EBT+T is specified for continuous operation from −40°C to +85°C. This industrial-grade range ensures reliable performance in portable medical devices, outdoor telemetry units, and battery-powered instrumentation exposed to ambient temperature extremes. All electrical characteristics - including reference voltage accuracy, supply current, and propagation delay - are guaranteed across this full range.
Does MAX9025EBT+T require an external reference capacitor?
MAX9025EBT+T does not require a reference bypass capacitor under normal conditions. Its internal 1.236V reference has low output impedance (~35kΩ) and is stable with loads up to 100nA. However, in noisy environments or systems with fast VCC transients, a 1nF–10nF ceramic capacitor from REF to VEE is recommended to suppress coupling and improve reference stability - as confirmed in the official datasheet's Applications Information section.
Can MAX9025EBT+T drive a 5mA load directly?
Yes, MAX9025EBT+T can directly sink and source up to ±5mA while maintaining rail-to-rail output swing - verified in Electrical Characteristics tables for VOL and VOH at ISINK/ISOURCE = 5mA. This enables direct driving of LEDs, small relays, or logic inputs without external buffers, reducing component count in compact battery-monitoring circuits.
How does the internal hysteresis of MAX9025EBT+T improve system reliability?
MAX9025EBT+T includes 4mV of internal hysteresis, which creates distinct rising and falling input thresholds (VTHR and VTHF). This prevents output oscillation when input signals hover near the trip point - a common failure mode in battery voltage monitoring with slow discharge curves or EMI-coupled sensor lines. The hysteresis is fixed and temperature-stable, eliminating need for external feedback networks.
Is MAX9025EBT+T pin-compatible with other devices in the MAX9025–MAX9028 family?
Yes, all MAX9025–MAX9028 variants share identical 6-bump UCSP package, pinout, and footprint - including MAX9025EBT+T, MAX9026EBT+T, MAX9027EBT+T, and MAX9028EBT+T. This allows drop-in substitution between reference-equipped (MAX9025/MAX9026) and reference-free (MAX9027/MAX9028) versions, or between push-pull (MAX9025/MAX9027) and open-drain (MAX9026/MAX9028) outputs, simplifying design reuse and inventory management.
MAX9025EBT+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:
- CMOS, Push-Pull, 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):
- 28µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 6-WLP
MAX9025EBT+T FAQ
1.How can I place an order for MAX9025EBT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9025EBT+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 MAX9025EBT+T reliable?
The price and inventory of MAX9025EBT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9025EBT+T is usually 5 days.
3.What payment methods are accepted for MAX9025EBT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9025EBT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9025EBT+T?
MAX9025EBT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9025EBT+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 MAX9025EBT+T?
For technical support, including MAX9025EBT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9025EBT+T requirements.
6.How does Aetrix verify that MAX9025EBT+T is sourced from the original manufacturer or authorized distributors?
All MAX9025EBT+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 MAX9025EBT+T meets industry standards.
7.What is the process for return or replacement of MAX9025EBT+T?
All MAX9025EBT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9025EBT+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 MAX9025EBT+T part is unused and in its original packaging.
Return procedure for MAX9025EBT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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