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Analog Devices Inc./Maxim Integrated MAX40002AUK02+
- Part No.:
- MAX40002AUK02+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX40002AUK02+.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,765
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Product details
Overview
MAX40002AUK02+ from Analog Devices is a nanoPower, open-drain, noninverting comparator with factory-trimmed 0.2V internal reference voltage, 500nA supply current, 0.1V–5.5V input range, and 5-pin SOT23 package - designed for ultra-low-power voltage monitoring in space-constrained battery-powered systems.
For engineers reviewing the MAX40002AUK02+ datasheet, MAX40002AUK02+ pinout, MAX40002AUK02+ application, or MAX40002AUK02+ equivalent, key selection factors include its 0.2V precision internal reference, -40°C to +125°C automotive qualification, open-drain output requiring external pullup, WLP/SOT23 package optioning, and 9µs propagation delay at 100mV overdrive.
Technical Context
The MAX40002AUK02+ implements a BiCMOS input stage enabling rail-to-rail input operation (0.1V to VCC + 0.1V) independent of supply voltage, with high-impedance inputs even when VCC = 0V. Its internal 0.2V reference is temperature-compensated and factory-trimmed to ±12mV at +25°C (±26mV over -40°C to +125°C).
It features 8mV typical internal hysteresis for noise immunity, operates from 1.7V to 5.5V, and delivers push-pull or open-drain output variants - this part uses open-drain output, requiring an external pullup resistor for logic-level translation across voltage domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7V to 5.5V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V digital rails without level-shifting. |
| Quiescent Current | 0.5µA typical - enables continuous monitoring in multi-year battery applications (e.g., coin-cell IoT sensors). |
| Internal Reference Voltage | 0.2V ±12mV (25°C), ±26mV (-40°C to +125°C) - eliminates external reference IC and associated PCB area/cost. |
| Input Voltage Range | 0.1V to 5.5V - allows detection of sub-1V thresholds (e.g., brown-out, low-battery flag) even at 1.7V supply. |
| Propagation Delay | 9µs (typ) at 100mV overdrive - sufficient for slow-varying system monitoring (e.g., battery voltage sag, thermal trip). |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial, and extended-life portable medical use. |
| Output Type | Open-drain - enables wired-OR logic, level translation up to 5.5V, and compatibility with microcontroller GPIO pullups. |
Pinout & Package
MAX40002AUK02+ is supplied in a RoHS-compliant 5-pin SOT23 package (package code U5+1), footprint compatible with industry-standard SOT-23-5 layouts and reflow-solderable per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC/REF | Supply voltage input / external reference input | Accepts 1.7V–5.5V supply; also serves as external REF input if internal reference unused - bypass with 0.1µF capacitor to GND. |
| 2 - GND | Ground reference | Primary return path for supply current and input bias; must be low-impedance connection to system ground plane. |
| 3 - N.C. | No connect | Not internally bonded - leave unconnected and unpopulated on PCB; no routing or thermal pad required. |
| 4 - IN | Noninverting input | Compares applied signal against internal 0.2V reference; asserts high at OUT when VIN > 0.2V (open-drain requires pullup). |
| 5 - OUT | Open-drain output | Sinks current only - requires external pullup (e.g., 100kΩ to 3.3V) to generate logic-high; supports mixed-voltage interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT23 footprint | 5-pin SOT23 occupies <1.6mm² PCB area - replaces larger comparators while fitting dense portable layouts. |
| 0.2V factory-trimmed reference | Eliminates need for external precision reference IC and supporting passives, reducing BOM count and layout complexity. |
| Input overvoltage tolerance | Inputs operate up to 6V regardless of VCC - enables direct sensing of higher-voltage rails (e.g., 3.3V signal into 1.8V system). |
| Zero-VCC input high-Z mode | Input impedance remains >1GΩ when VCC = 0V - prevents signal loading during power-down, critical for always-on monitoring. |
| RF-immune internal filtering | On-chip filtering suppresses RF-induced false triggering from GSM/Bluetooth antennas routed near input traces. |
Applications
| Battery Voltage Monitor | Low-Power Wake-Up Detector |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during deep sleep to trigger wake-up before cutoff (e.g., 2.8V threshold). IC Role / Device Role / Timing Role: Comparator compares cell voltage against internal 0.2V reference scaled via resistor divider - outputs active-low wake signal. Use Value: 500nA quiescent current extends shelf life; 0.2V reference enables precise 2.8V detection using 14:1 divider with <0.5% error. | Use Scenario: Detecting button press or sensor event in wearable device powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Noninverting comparator triggers MCU interrupt when external signal crosses 0.2V threshold - open-drain output interfaces directly to MCU GPIO with internal pullup. Use Value: Eliminates external reference and reduces total solution current to <1µA - enables >5-year battery life with 10-second wake intervals. |
| Automotive Cabin Sensor | Portable Medical Alert Threshold |
Use Scenario: Detecting seatbelt buckle insertion in automotive cabin controller operating across -40°C to +125°C. IC Role / Device Role / Timing Role: Compares buckle switch voltage against 0.2V reference - open-drain output drives CAN transceiver enable line with 5.5V-tolerant pullup. Use Value: AEC-Q100-qualified temperature range and 5.5V-tolerant inputs ensure reliable operation despite ESD and load-dump transients. | Use Scenario: Triggering audible alert when blood glucose meter sensor output falls below clinical safety threshold (e.g., 3.5mmol/L). IC Role / Device Role / Timing Role: Noninverting comparator with 0.2V reference and precision resistor network detects analog sensor output crossing calibrated threshold. Use Value: Factory-trimmed 0.2V reference ensures <±2% total threshold error over temperature - meets ISO 15197 accuracy requirements without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7011DBVR | Push-pull output, 0.2V reference, 650nA IQ, SOT23-5 - lacks input overvoltage tolerance beyond VCC. | Requires external pullup for wired-OR; less suitable for mixed-voltage sensing where input may exceed VCC. | Select TLV7011DBVR only if push-pull output and lower cost outweigh need for 6V-tolerant inputs and zero-VCC high-Z mode. |
| MAX40012AUK02+ | Same 0.2V reference, open-drain, 500nA IQ, but in 0.73mm × 0.73mm WLP - no SOT23 footprint compatibility. | Enables smaller PCB area but requires WLP assembly capability and different land pattern. | Select MAX40012AUK02+ only when board space is constrained below SOT23 limits and WLP reflow is available. |
Compared with TLV7011DBVR and MAX40012AUK02+, the MAX40002AUK02+ uniquely combines SOT23 compatibility, 6V-tolerant inputs, zero-VCC high-Z, and automotive temperature range - making it optimal for robust, drop-in replacement in legacy SOT23 designs requiring enhanced reliability.
Availability
MAX40002AUK02+ is available at Aetrix Electronics and suitable for battery voltage monitoring, low-power wake-up detection, and automotive cabin sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX40002AUK02+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX4000x family was designed specifically for ultra-low-power, space-constrained voltage monitoring and threshold detection in portable and automotive electronics - prioritizing nanoPower operation, integrated references, and robust input architecture.
FAQ
What is the internal reference voltage of MAX40002AUK02+?
The MAX40002AUK02+ features a factory-trimmed internal reference voltage of 0.2V, specified as 188mV to 212mV at +25°C and 174mV to 226mV over the full -40°C to +125°C operating range. This reference is used directly by the comparator's noninverting input stage and eliminates the need for external reference components in threshold-detection applications.
Does MAX40002AUK02+ support operation below 1.8V supply?
Yes, MAX40002AUK02+ operates from 1.7V to 5.5V supply voltage, enabling reliable function at 1.7V - including full specification of input range (0.1V to VCC + 0.1V), 500nA quiescent current, and 0.2V reference accuracy. This makes it suitable for single-cell LiFePO₄ or alkaline battery systems where voltage drops below 1.8V during discharge.
Is MAX40002AUK02+ pin-compatible with other MAX4000x variants in SOT23?
Yes, all MAX4000x parts in the AUK (SOT23-5) package - including MAX40002AUK02+, MAX40003AUK02+, and MAX40004AUK02+ - share identical pinout (VCC/REF, GND, N.C., IN, OUT). However, input polarity (noninverting vs. inverting) and output type (open-drain vs. push-pull) differ, so functional substitution requires circuit verification.
Can MAX40002AUK02+ inputs safely exceed the supply voltage?
Yes, MAX40002AUK02+ inputs tolerate voltages up to 6V regardless of VCC level, as confirmed by Absolute Maximum Ratings (IN to GND: -0.3V to +6V). This enables direct sensing of higher-voltage signals (e.g., 3.3V I²C lines or 5V peripherals) without external clamping or level-shifting circuitry - a key differentiator versus conventional comparators.
What is the recommended bypass capacitor for MAX40002AUK02+?
A 0.1µF ceramic capacitor is required between the VCC/REF pin and GND, placed as close as possible to the device pins. This stabilizes the internal reference and comparator core during switching events, minimizes supply-current spikes, and ensures specified propagation delay and PSRR performance - per manufacturer layout guidance in the MAX40002–MAX40005 datasheet.
MAX40002AUK02+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.7V ~ 5.5V
- :
- -
- Voltage - Input Offset (Max):
- 0.03µA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.1µA
- Current - Quiescent (Max):
- 46dB PSRR (Min)
- CMRR, PSRR (Typ):
- 55µs (Typ)
- Propagation Delay (Max):
- 8mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
MAX40002AUK02+ FAQ
1.How can I place an order for MAX40002AUK02+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40002AUK02+ 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 MAX40002AUK02+ reliable?
The price and inventory of MAX40002AUK02+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40002AUK02+ is usually 5 days.
3.What payment methods are accepted for MAX40002AUK02+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40002AUK02+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40002AUK02+?
MAX40002AUK02+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40002AUK02+ 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 MAX40002AUK02+?
For technical support, including MAX40002AUK02+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40002AUK02+ requirements.
6.How does Aetrix verify that MAX40002AUK02+ is sourced from the original manufacturer or authorized distributors?
All MAX40002AUK02+ 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 MAX40002AUK02+ meets industry standards.
7.What is the process for return or replacement of MAX40002AUK02+?
All MAX40002AUK02+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX40002AUK02+, 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 MAX40002AUK02+ part is unused and in its original packaging.
Return procedure for MAX40002AUK02+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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