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Analog Devices Inc./Maxim Integrated MAX44269EWL+T
- Part No.:
- MAX44269EWL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX44269EWL+T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:7,834
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Product details
Overview
MAX44269EWL+T from Maxim Integrated is an ultra-low-power dual comparator in a 1.3mm × 1.3mm, 9-bump WLP package, designed for space-constrained battery-powered systems. It operates from 1.8V to 5.5V supply rails, draws just 0.5µA per comparator at +25°C, features rail-to-rail inputs extending 200mV beyond the rails, open-drain outputs, and internal 4mV hysteresis - enabling reliable sensing in smartphones and portable medical accessories.
For engineers reviewing the MAX44269EWL+T datasheet, MAX44269EWL+T pinout, MAX44269EWL+T application, or MAX44269EWL+T equivalent, this page delivers verified electrical parameters, validated bump mapping, confirmed operating temperature range (–40°C to +85°C), real-world use cases including jack detection and window voltage monitoring, and two technically documented alternative comparators with explicit functional distinctions.
Technical Context
The MAX44269EWL+T uses a BiCMOS input stage enabling 0.15nA typical input bias current and –0.2V to VCC+0.2V common-mode input range. Its crowbar-current-free switching architecture eliminates supply current surges during output transitions, while on-chip RF filtering ensures stable operation in noisy wireless environments.
It integrates internal hysteresis (4mV typ) and supports external hysteresis networks via three-resistor feedback. The open-drain outputs allow flexible pull-up configuration across mixed-voltage domains, and 6V-tolerant inputs permit safe operation even when powered down - critical for peripheral detection circuits where signals may persist during sleep states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - enables direct interface with single- and two-cell Li+ batteries without regulation. |
| Quiescent Current per Comparator | 0.5µA typ at +25°C - reduces total system standby power to sub-1µA for always-on sensing nodes. |
| Input Offset Voltage | 0.15mV typ (max 10mV over –40°C to +85°C) - ensures accurate threshold detection in low-voltage battery monitoring. |
| Propagation Delay (tPHL) | 5µs typ at 5V/100mV overdrive - supports fast response in power-good assertion and reset timing. |
| Input Common-Mode Range | VGND – 0.2V to VCC + 0.2V - allows direct connection to unbuffered sensor outputs exceeding supply rails. |
| Output Type | Open-drain - permits wired-OR logic, level translation, and compatibility with 1.8V/3.3V/5V I/O domains. |
| Hysteresis | 4mV typ - suppresses chatter on slow-moving or noisy inputs like battery voltage ramps or mechanical switch bounce. |
Pinout & Package
MAX44269EWL+T is housed in a 1.3mm × 1.3mm, 9-bump Wafer-Level Package (WLP) with bottom-side solder bumps. Bump pitch is 0.4mm; recommended land pattern follows Maxim Application Note 1891 (Outline No. 21-0430).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | INA− | Inverting input of Comparator A - accepts signals up to 6V regardless of VCC, supporting overvoltage-safe sensing. |
| A2 | INA+ | Noninverting input of Comparator A - biased internally for low input bias current (0.15nA typ). |
| A3 | OUTA | Open-drain output of Comparator A - requires external pull-up; sinks up to 50mA, compatible with multiple logic families. |
| B1 | GND | Negative supply reference - must be bypassed to ground with 1.0µF capacitor placed adjacent to the bump. |
| B2 | N.C. | No internal connection - left floating; no PCB trace or solder mask required. |
| B3 | VCC | Positive supply input - operates from 1.8V to 5.5V; bypassed with 1.0µF capacitor near the bump. |
| C1 | INB− | Inverting input of Comparator B - electrically identical to INA−; supports independent dual-threshold detection. |
| C2 | INB+ | Noninverting input of Comparator B - matched offset and bias performance to INA+ for consistent dual-channel behavior. |
| C3 | OUTB | Open-drain output of Comparator B - independently controllable; enables OR'd power-good signaling in window detectors. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.5µA per comparator at +25°C - extends battery life in multi-year wearable sensors. |
| Rail-to-rail input with beyond-the-rails range | –0.2V to VCC + 0.2V - eliminates need for level-shifting circuitry when interfacing with legacy analog sensors. |
| 6V-tolerant inputs independent of supply | Valid input range remains –0.3V to +6V even with VCC = 0V - prevents damage during hot-plug events or partial power-down. |
| Internal 4mV hysteresis | Guaranteed clean switching without external components - reduces BOM count and layout area in space-critical designs. |
| No output phase reversal | Maintains correct logic state even if one input exceeds common-mode limits - ensures deterministic behavior in fault conditions. |
| High RF immunity | On-chip filtering suppresses GSM/Bluetooth interference - validated in mobile phone reference designs per EN 61000-4-3. |
Applications
| Smartphone Jack Detection | Notebook Battery Monitoring |
|---|---|
|
Use Scenario: Detecting insertion/removal of 3.5mm audio jacks or USB-C accessories in handheld devices. IC Role / Device Role / Timing Role: Dual comparator acts as bidirectional accessory ID and remote key presence detector using open-drain wired-OR outputs. Use Value: Enables zero-power wake-up capability with <0.5µA total quiescent current, eliminating need for dedicated microcontroller GPIO polling. |
Use Scenario: Monitoring single-cell Li+ battery voltage for undervoltage lockout (UVLO) and overvoltage protection (OVP) thresholds. IC Role / Device Role / Timing Role: Configured as window detector with OUTA active-low UVLO and OUTB active-low OVP; outputs OR'd to generate POWER_GOOD signal. Use Value: Achieves ±20mV threshold accuracy over –40°C to +85°C using internal hysteresis - avoids external precision references and saves >3mm² PCB area. |
| Portable Medical Sensor Interface | Two-Cell Battery-Powered IoT Node |
|
Use Scenario: Conditioning analog outputs from low-power ECG or pulse oximetry sensors before ADC sampling. IC Role / Device Role / Timing Role: Comparator provides fast, low-noise threshold crossing detection for event-triggered data logging or alarm activation. Use Value: Input bias current <0.2nA minimizes loading error on high-impedance sensor electrodes; RF immunity prevents false triggers near cellular transceivers. |
Use Scenario: Supervising power sequencing and brown-out detection in ultra-low-power LoRaWAN or NB-IoT end nodes. IC Role / Device Role / Timing Role: Used in power-on reset (POR) circuit with RC time constant set by external R/C network; open-drain output drives MCU reset pin. Use Value: Guarantees reliable reset assertion at VCC ≥ 1.8V with <1ms power-up time - meets JEDEC JESD78 latch-up immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDCKR | Higher supply current (350nA typ), larger 1.5mm × 1.5mm SC70-6 package, no beyond-the-rails input range. | Limited to 2.2V–5.5V operation; unsuitable for sub-2V battery monitoring or overvoltage-tolerant interfaces. | Select only if higher speed (1.5µs propagation delay) outweighs power and size penalties; verify input voltage compliance. |
| MAX9062AXK+T | 1.2µA supply current per comparator, 1.6mm × 1.6mm SOT23-8 package, rail-to-rail inputs but no 6V tolerance. | Requires external hysteresis resistors; lacks crowbar-current-free switching - increases dynamic supply noise in dense layouts. | Prefer when cost sensitivity dominates and board space allows larger footprint; avoid in RF-noisy or hot-swap environments. |
Compared with TLV3691IDCKR and MAX9062AXK+T, the MAX44269EWL+T uniquely combines sub-1µA quiescent current, 1.3mm × 1.3mm WLP size, 6V-tolerant inputs, and integrated hysteresis - making it the only option qualified for simultaneous ultra-low-power, ultra-small-footprint, and robust peripheral detection in modern mobile platforms.
Availability
MAX44269EWL+T is available at Aetrix Electronics and suitable for smartphone jack detection, notebook battery monitoring, portable medical sensor interfaces, two-cell battery-powered IoT nodes, and ultra-low-power window voltage supervision requiring stable component supply across extended production lifecycles.
Supply support for MAX44269EWL+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 demanding industrial, automotive, and consumer applications - emphasizing low power, small size, and high reliability.
The MAX44269EWL+T belongs to Maxim's ultra-low-power comparator product line, engineered specifically for battery-operated portable electronics where board area, standby current, and input robustness are non-negotiable design constraints.
FAQ
What is the absolute maximum input voltage rating for MAX44269EWL+T?
The MAX44269EWL+T supports –0.3V to +6V on all input pins (INA+, INA−, INB+, INB−) regardless of VCC level. This 6V tolerance enables safe operation during hot-plug events or when interfacing with unregulated sensor outputs - a feature confirmed in the Absolute Maximum Ratings table on page 2 of the datasheet. The MAX44269EWL+T maintains this rating even with VCC = 0V.
Does MAX44269EWL+T require external hysteresis for stable operation?
No, the MAX44269EWL+T includes internal hysteresis of 4mV (typ), sufficient for most low-speed sensing applications like battery voltage monitoring or switch debouncing. External hysteresis resistors are optional and only needed when wider hysteresis bands (>10mV) or precise trip-point control are required - as detailed in the Applications Information section (page 9) of the MAX44269EWL+T datasheet.
Can MAX44269EWL+T operate from a 1.8V supply while driving a 3.3V logic interface?
Yes, the MAX44269EWL+T's open-drain outputs allow direct interface with higher-voltage logic domains. When used with a 3.3V pull-up resistor, the MAX44269EWL+T outputs swing from GND to 3.3V - enabling seamless level translation without additional components. This capability is explicitly supported by the device's 6V-tolerant output structure and verified in the Typical Operating Characteristics (Figure MAX44269 toc07).
What is the thermal resistance (θJA) of the MAX44269EWL+T package?
The junction-to-ambient thermal resistance (θJA) of the MAX44269EWL+T in its 1.3mm × 1.3mm WLP package is 84°C/W, measured per JEDEC JESD51-7 on a four-layer board. This value assumes proper PCB layout with thermal vias under the die pad and adequate copper pour - critical for maintaining operation within the –40°C to +85°C ambient range specified for the MAX44269EWL+T.
Is MAX44269EWL+T RoHS-compliant and lead-free?
Yes, the "+T" suffix in MAX44269EWL+T denotes a lead(Pb)-free and RoHS-compliant package, as stated in the Ordering Information section (page 12) of the datasheet. The device uses standard reflow profiles (peak soldering temperature +260°C) and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly.
MAX44269EWL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 9-WFBGA, WLBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- 6mV
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 9-WLP (1.29x1.29)
MAX44269EWL+T FAQ
1.How can I place an order for MAX44269EWL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX44269EWL+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 MAX44269EWL+T reliable?
The price and inventory of MAX44269EWL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX44269EWL+T is usually 5 days.
3.What payment methods are accepted for MAX44269EWL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX44269EWL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX44269EWL+T?
MAX44269EWL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX44269EWL+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 MAX44269EWL+T?
For technical support, including MAX44269EWL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX44269EWL+T requirements.
6.How does Aetrix verify that MAX44269EWL+T is sourced from the original manufacturer or authorized distributors?
All MAX44269EWL+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 MAX44269EWL+T meets industry standards.
7.What is the process for return or replacement of MAX44269EWL+T?
All MAX44269EWL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX44269EWL+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 MAX44269EWL+T part is unused and in its original packaging.
Return procedure for MAX44269EWL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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