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Analog Devices Inc./Maxim Integrated MAX836EUS-T
- Part No.:
- MAX836EUS-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX836EUS-T.pdf
- Description:
- IC SUPERVISOR MICROPWR VOLT MON
- Quantity:
- Payment:
- Shipping:
Inventory:1,127
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Product details
Overview
MAX836EUS-T from Maxim Integrated is a micropower voltage monitor IC with open-drain n-channel output, 1.204V precision bandgap reference, ±1.25% trip threshold accuracy, <5µA typical supply current, and SOT143-4 package. It monitors system supply (e.g., VCC) or external voltages in battery-powered systems by comparing input against internal reference.
For engineers reviewing the MAX836EUS-T datasheet, MAX836EUS-T pinout, MAX836EUS-T application, or MAX836EUS-T equivalent, key selection criteria include trip threshold tolerance, ultra-low ICC, open-drain output compatibility with higher-voltage pull-ups (≤11V), and operation across -40°C to +85°C.
Technical Context
The MAX836EUS-T integrates a precision 1.204V bandgap reference and comparator in a single die, with IN connected to the noninverting input and internal reference applied to the inverting input. Its open-drain output supports level-shifting via external pull-up and tolerates output voltage up to 11V independent of VCC.
Threshold voltage is set externally using two resistors (R1/R2); hysteresis (6mV) improves noise immunity. Input leakage is ≤±12nA, and propagation delay is 80µs typical at 5V with 50mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Trip Threshold Voltage | 1.204V ±1.25% - sets precise detection point for monitored voltage |
| Supply Current (ICC) | <5µA typical - enables multi-year battery life in low-power systems |
| Operating VCC Range | 2.5V to 11.0V - supports wide-input monitoring including Li-ion and multi-cell batteries |
| Output Type | Open-drain n-channel - allows flexible pull-up to voltage > VCC (≤11V) for level translation |
| Hysteresis | 6mV - prevents chatter near threshold under noisy conditions |
| Propagation Delay | 80µs typical - ensures timely response without excessive speed-related power penalty |
| IN Leakage Current | ±12nA max - permits use of high-value resistor dividers without threshold error |
Pinout & Package
SOT143-4 package: 1.3mm × 1.3mm × 0.95mm body, 0.65mm lead pitch, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | System ground reference | Return path for internal reference and comparator; must be low-impedance |
| 2 VCC | Power supply input | Bias source for internal circuitry; operates from 2.5V–11.0V |
| 3 IN | Noninverting comparator input | Accepts divided monitored voltage; high-impedance (leakage ≤±12nA) |
| 4 OUT | Open-drain n-channel output | Sinks current only; requires external pull-up; supports voltage up to 11V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 1.204V reference | Enables accurate, temperature-stable trip points across -40°C to +85°C |
| Ultra-low 5µA supply current | Minimizes quiescent drain on coin cells or primary batteries |
| Open-drain output with 11V tolerance | Allows interface to higher-voltage logic domains without level-shifters |
| 6mV internal hysteresis | Reduces false triggering in electrically noisy environments |
| High-impedance IN pin (≤12nA leakage) | Permits use of MΩ-range resistor dividers without accuracy loss |
Applications
| Precision Battery Monitor | Load Switching |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during discharge to trigger low-battery warning or shutdown before deep discharge. IC Role / Device Role / Timing Role: Voltage monitor detecting when battery voltage falls below programmable threshold (e.g., 3.0V). Use Value: Prevents battery damage and extends cycle life using ±1.25% threshold accuracy and 6mV hysteresis. | Use Scenario: Enabling/disabling power to peripheral modules (e.g., sensors, radios) based on system supply status. IC Role / Device Role / Timing Role: Control signal generator that asserts open-drain output to drive gate of external MOSFET. Use Value: Achieves <5µA standby current and supports 11V pull-up for 5V/3.3V logic compatibility. |
| Battery-Powered Systems | Threshold Detectors |
Use Scenario: Supervising VCC in portable medical devices or IoT edge nodes powered by CR2032 or AA batteries. IC Role / Device Role / Timing Role: Primary supply supervisor ensuring processor reset or safe shutdown when voltage drops. Use Value: Delivers reliable operation down to 2.5V VCC with minimal current draw and stable 1.204V reference. | Use Scenario: Detecting specific voltage thresholds in industrial sensor signal chains (e.g., 4.63V overvoltage alarm). IC Role / Device Role / Timing Role: Programmable comparator with external resistor divider setting exact trip point. Use Value: Enables custom threshold configuration with ≤1.25% error and 80µs response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803DBZT | Fixed 3.08V threshold; no external resistor programming; 0.9µA ICC; SOT-23-3 | Not programmable; suited for fixed-threshold, ultra-low-power uses only | Select when threshold is fixed and sub-1µA supply current is critical |
| MAX6375XS29D+ | Fixed 2.93V threshold; push-pull output; 1.8µA ICC; SC70-5 | Lacks open-drain flexibility; smaller package but no external threshold tuning | Select when push-pull output and compact SC70 are preferred over programmability |
Compared with TLV803DBZT and MAX6375XS29D+, the MAX836EUS-T uniquely supports user-defined trip voltages via external resistors, maintains open-drain output for level-shifting, and delivers ±1.25% accuracy across temperature-making it optimal for adaptable, battery-sensitive designs requiring precision and flexibility.
Availability
MAX836EUS-T is available at Aetrix Electronics and suitable for precision battery monitor, load switching, and battery-powered systems requiring stable component supply, long-term manufacturability, and guaranteed lead-free compliance.
Supply support for MAX836EUS-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 industrial, automotive, communications, and computing applications.
The MAX836EUS-T belongs to Maxim's micropower voltage monitor product line, engineered specifically for ultra-low-current, high-accuracy supply supervision in space- and energy-constrained portable electronics.
FAQ
What is the function of the MAX836EUS-T?
The MAX836EUS-T is a micropower voltage monitor IC that detects when an input voltage crosses a user-programmable threshold using an internal 1.204V precision reference and comparator. Its open-drain output asserts low when the monitored voltage falls below the programmed trip point. The MAX836EUS-T operates from 2.5V to 11.0V and draws less than 5µA, making it ideal for battery-critical applications.
What is the maximum allowable voltage on the OUT pin of the MAX836EUS-T?
The MAX836EUS-T OUT pin is an open-drain n-channel output rated for voltages up to 11V, regardless of VCC level-enabling safe interface with higher-voltage logic or pull-up networks. This specification is explicitly stated in the Absolute Maximum Ratings table and confirmed in the Detailed Description section of the datasheet.
Can the MAX836EUS-T monitor voltages other than VCC?
Yes, the MAX836EUS-T can monitor any external voltage (VMON) independent of VCC, provided VIN remains at least 1V below VCC. Figure 3 in the datasheet shows this configuration, where VMON connects to the IN pin through a resistor divider. The MAX836EUS-T's high-impedance input (≤±12nA leakage) ensures minimal loading and accurate threshold setting.
What is the purpose of the 6mV hysteresis in the MAX836EUS-T?
The 6mV hysteresis in the MAX836EUS-T prevents output oscillation when the input voltage hovers near the trip threshold due to noise or slow transitions. It creates separate rising and falling thresholds, improving reliability in electrically noisy environments such as motor-driven or RF-intensive systems. This value is specified in the Electrical Characteristics table and applies across the full operating temperature range.
How is the trip threshold voltage set for the MAX836EUS-T?
The trip threshold voltage for the MAX836EUS-T is set externally using two resistors (R1 and R2) forming a voltage divider from the monitored voltage to GND, with the junction connected to the IN pin. The formula is R1 = R2 × (VTRIP / 1.204 − 1). For example, to set VTRIP = 3.0V with R2 = 1MΩ, R1 ≈ 1.49MΩ. This method is detailed in the Applications Information section of the MAX836EUS-T datasheet.
MAX836EUS-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.2V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX836EUS-T FAQ
1.How can I place an order for MAX836EUS-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX836EUS-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 MAX836EUS-T reliable?
The price and inventory of MAX836EUS-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX836EUS-T is usually 5 days.
3.What payment methods are accepted for MAX836EUS-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX836EUS-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX836EUS-T?
MAX836EUS-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX836EUS-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 MAX836EUS-T?
For technical support, including MAX836EUS-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX836EUS-T requirements.
6.How does Aetrix verify that MAX836EUS-T is sourced from the original manufacturer or authorized distributors?
All MAX836EUS-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 MAX836EUS-T meets industry standards.
7.What is the process for return or replacement of MAX836EUS-T?
All MAX836EUS-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX836EUS-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 MAX836EUS-T part is unused and in its original packaging.
Return procedure for MAX836EUS-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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