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Analog Devices Inc./Maxim Integrated MAX16133BHA+T
- Part No.:
- MAX16133BHA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX16133BHA+T.pdf
- Description:
- LOW-VOLTAGE, PRECISION, SINGLE/D
- Quantity:
- Payment:
- Shipping:
Inventory:4,771
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Product details
Overview
MAX16133BHA+T from Analog Devices is a dual-input, precision voltage supervisor IC designed for automotive ADAS and multivoltage ASIC monitoring. It monitors two independent supply rails (IN1 = 3.3V nominal, IN2 = 1.8V nominal) with ±1% threshold accuracy over temperature, ±4% window tolerance, and 0.25% hysteresis per input. Its active-low open-drain reset outputs (RESET1, RESET2) assert on undervoltage or overvoltage faults and feature a factory-set 1ms minimum timeout period.
For engineers reviewing the MAX16133BHA+T datasheet, MAX16133BHA+T pinout, MAX16133BHA+T application, or MAX16133BHA+T equivalent, this device delivers high-precision window supervision for safety-critical automotive power sequencing, server voltage margining, and storage equipment rail validation - with guaranteed correct logic state down to VDD = 1.07V and immunity to short monitored-supply transients.
Technical Context
The MAX16133BHA+T implements independent dual-channel window supervision using factory-trimmed comparators referenced to a stable internal voltage reference. Each input channel features programmable UV/OV thresholds derived from its nominal voltage (3.3V/1.8V) and ±4% tolerance, with 0.25% hysteresis ensuring noise immunity without compromising accuracy.
All reset outputs share a fixed 1ms minimum timeout period and are active-low, open-drain, requiring external pull-up resistors. The device operates across the full automotive temperature range (−40°C to +125°C), maintains functional safety compliance, and guarantees correct reset output logic state as long as VDD remains above 1.07V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Configuration | Dual independent inputs: IN1 = 3.3V nominal, IN2 = 1.8V nominal |
| Threshold Accuracy | ±1% over −40°C to +125°C - enables reliable fault detection in automotive environments without calibration |
| Window Tolerance | ±4% per input - sets UV threshold at 96% and OV threshold at 104% of nominal voltage |
| Hysteresis | 0.25% per input - prevents chatter during slow-rising/falling supply edges |
| Reset Timeout | 1ms minimum - ensures sufficient hold time for microprocessor initialization sequences |
| Supply Current | 12.5μA typical - minimizes quiescent power impact in always-on automotive subsystems |
| Operating Voltage | 1.71V to 5.5V VDD - supports wide-range battery and post-regulator supply domains |
Pinout & Package
MAX16133BHA+T is housed in an 8-pin SOT23 package (outline 21-0078, land pattern 90-0176), optimized for space-constrained automotive PCB layouts and compatible with standard reflow processes (JEDEC JESD51-7 thermal model).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Must be bypassed with 0.1µF capacitor to GND; device guarantees correct reset logic down to 1.07V |
| IN1 (Pin 2) | First monitoring input | Monitors 3.3V nominal rail; asserts RESET1 if voltage falls outside 3.168V–3.432V window |
| IN2 (Pin 3) | Second monitoring input | Monitors 1.8V nominal rail; asserts RESET2 if voltage falls outside 1.728V–1.872V window |
| GND (Pin 4) | Ground reference | Common return path for all internal circuitry and reset outputs |
| RESET1 (Pin 5) | Active-low open-drain output | Drives low when IN1 fault detected; requires external pull-up; deasserts after 1ms timeout once IN1 recovers |
| RESET2 (Pin 6) | Active-low open-drain output | Drives low when IN2 fault detected; requires external pull-up; deasserts after 1ms timeout once IN2 recovers |
| N.C. (Pin 7) | No-connect | Internally unused; must be connected to GND per datasheet recommendation |
| N.C. (Pin 8) | No-connect | Internally unused; must be connected to GND per datasheet recommendation |
Key Features
| Feature | Design Value |
|---|---|
| ±1% threshold accuracy over temperature | Eliminates need for system-level recalibration in ADAS ECUs operating across extreme ambient conditions |
| Independent dual reset outputs | Enables separate power-good signaling for distinct voltage domains (e.g., core vs. I/O rails) without external logic |
| 1ms factory-set reset timeout | Matches typical µP power-on reset timing requirements without external RC components or configuration overhead |
| Immunity to short monitored-supply transients | Prevents false resets during brief load-dump or coupling events common in automotive 12V systems |
| AEC-Q100 qualified | Validated for automotive use per stress test requirements - supports functional safety documentation (ISO 26262 ASIL-B ready) |
Applications
| Automotive ADAS ECU Power Monitoring | Server CPU Core & I/O Rail Validation |
|---|---|
Use Scenario: Real-time monitoring of dual supply rails (3.3V sensor interface, 1.8V image processor core) in forward-facing camera modules. IC Role / Device Role / Timing Role: Dual-channel window supervisor asserting independent reset signals to ensure safe boot sequence and fault containment. Use Value: Prevents corrupted image processing due to marginal rail conditions, leveraging ±1% accuracy and 0.25% hysteresis to reject noise-induced false triggers. | Use Scenario: Verifying simultaneous stability of CPU core (1.8V) and PCIe I/O (3.3V) supplies during server power-up and dynamic voltage scaling. IC Role / Device Role / Timing Role: Precision dual-rail supervisor providing synchronized reset assertion only when both rails meet tight window thresholds. Use Value: Enables deterministic boot timing with 1ms timeout, eliminating need for discrete supervisors or FPGA-based monitoring logic. |
| Industrial Storage Controller Power Sequencing | Automotive Infotainment SoC Supply Integrity |
Use Scenario: Ensuring proper power-up order and voltage integrity across NAND flash interface (3.3V) and controller logic (1.8V) in SSD modules. IC Role / Device Role / Timing Role: Dual-input supervisor validating rail convergence before releasing reset to storage controller ASIC. Use Value: Guarantees correct initialization sequence via independent RESET1/RESET2 outputs, reducing firmware complexity and field failure risk. | Use Scenario: Monitoring critical SoC supply rails (3.3V display interface, 1.8V GPU core) in head-unit systems exposed to wide thermal and electrical stress. IC Role / Device Role / Timing Role: Automotive-grade dual supervisor delivering AEC-Q100-compliant fault detection with guaranteed operation down to VDD = 1.07V. Use Value: Supports fail-safe behavior during cold-cranking events by maintaining valid reset state even under brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16133BFM+T | Same dual-input architecture but configured for 5.0V/3.3V nominal rails and ±5% tolerance | Suitable for higher-voltage industrial controllers rather than 3.3V/1.8V ADAS domains | Select when monitoring legacy 5V logic rails alongside modern 3.3V interfaces |
| TLV809E33DBVR | Single-channel 3.3V supervisor with 200ms timeout; no overvoltage detection or dual-input capability | Limited to basic undervoltage reset; cannot replace dual-window supervision function | Use only for cost-sensitive, single-rail applications where OV detection and dual monitoring are unnecessary |
Compared with MAX16133BFM+T and TLV809E33DBVR, the MAX16133BHA+T uniquely provides matched 3.3V/1.8V dual-window supervision with ±1% accuracy and 1ms timeout - making it the only option that meets ADAS power integrity requirements without design compromise.
Availability
MAX16133BHA+T is available at Aetrix Electronics and suitable for automotive ADAS systems, server power management, and industrial storage equipment requiring stable component supply with AEC-Q100 qualification and guaranteed −40°C to +125°C operation.
Supply support for MAX16133BHA+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving automotive, industrial, communications, and healthcare markets.
The MAX16132–MAX16135 family was engineered specifically for automotive-grade multirail power supervision, emphasizing ±1% threshold accuracy, window-based UV/OV detection, and functional safety readiness for ADAS and domain controller applications.
FAQ
What is the nominal input voltage configuration for MAX16133BHA+T?
The MAX16133BHA+T is factory-configured for dual-input monitoring with IN1 = 3.3V nominal and IN2 = 1.8V nominal, as indicated by the "HA" suffix in the part number per the Selector Guide. This configuration sets undervoltage and overvoltage thresholds at 96% and 104% of each nominal value, respectively, with ±1% accuracy over temperature.
Does MAX16133BHA+T support overvoltage detection on both inputs?
Yes, MAX16133BHA+T performs true window supervision on both IN1 and IN2, detecting both undervoltage and overvoltage faults independently. For the 3.3V nominal input, overvoltage triggers at 3.432V (104%); for the 1.8V nominal input, it triggers at 1.872V (104%). This dual-direction monitoring is intrinsic to the MAX16133BHA+T's architecture and does not require external components.
What is the reset timeout period for MAX16133BHA+T and how is it set?
The MAX16133BHA+T features a factory-set minimum reset timeout period of 1ms, denoted by the "B" suffix in the part number per Table 9 of the datasheet. This timeout applies identically to both RESET1 and RESET2 outputs and is non-adjustable. The device holds the reset output asserted for at least 1ms after the monitored input returns within its valid window threshold.
Can MAX16133BHA+T operate reliably during automotive cold-cranking conditions?
Yes, MAX16133BHA+T guarantees correct reset output logic state down to VDD = 1.07V, enabling robust operation during cold-cranking events where battery voltage may dip below 6V. Its 1.71V to 5.5V operating range, ±1% threshold accuracy over −40°C to +125°C, and immunity to short supply transients make it suitable for demanding automotive power environments.
Is MAX16133BHA+T AEC-Q100 qualified and what grade does it meet?
Yes, MAX16133BHA+T is AEC-Q100 qualified for automotive applications. It is specified over the extended temperature range of −40°C to +125°C and meets stress test requirements for Grade 1 (−40°C to +125°C), as confirmed in the Ordering Information table and Applications section of the official datasheet.
MAX16133BHA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.2V, 2.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX16133BHA+T FAQ
1.How can I place an order for MAX16133BHA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16133BHA+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 MAX16133BHA+T reliable?
The price and inventory of MAX16133BHA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16133BHA+T is usually 5 days.
3.What payment methods are accepted for MAX16133BHA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16133BHA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16133BHA+T?
MAX16133BHA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16133BHA+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 MAX16133BHA+T?
For technical support, including MAX16133BHA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16133BHA+T requirements.
6.How does Aetrix verify that MAX16133BHA+T is sourced from the original manufacturer or authorized distributors?
All MAX16133BHA+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 MAX16133BHA+T meets industry standards.
7.What is the process for return or replacement of MAX16133BHA+T?
All MAX16133BHA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16133BHA+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 MAX16133BHA+T part is unused and in its original packaging.
Return procedure for MAX16133BHA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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