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Analog Devices Inc./Maxim Integrated MAX16895AALT+T
- Part No.:
- MAX16895AALT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX16895AALT+T.pdf
- Description:
- IC ADJUSTABLE SEQUENCING/SUPERVI
- Quantity:
- Payment:
- Shipping:
Inventory:2,320
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Product details
Overview
MAX16895AALT+T from Analog Devices is an ultra-small, high-accuracy, adjustable sequencing/supervisory circuit with active-high enable and active-high push-pull output. It monitors voltages down to 0.5V via external resistive divider on UVSET, provides capacitor-adjustable delay (40µs to 190ms), operates from 1.5V–5.5V, draws only 10µA typical supply current, and is fully specified over –40°C to +125°C. It enables precise power-supply sequencing in space-constrained industrial and medical systems.
For engineers reviewing the MAX16895AALT+T datasheet, MAX16895AALT+T pinout, MAX16895AALT+T application, or MAX16895AALT+T equivalent, key selection criteria include its 1% threshold accuracy over temperature, µDFN package footprint (1.0mm × 1.5mm), capacitor-programmable timing, active-high logic interface compatibility, and push-pull output drive capability without external pull-up.
Technical Context
The MAX16895AALT+T implements a fixed 0.5V internal reference with 5mV hysteresis for UVSET monitoring, enabling accurate voltage detection across its full operating range. Its timing architecture uses a 250nA internal current source charging an external capacitor on CDELAY to generate programmable delays per tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs.
It features dual-trigger sequencing logic: output assertion requires both UVSET > 0.5V *and* ENABLE high, with delay applied to both UVSET rise and ENABLE assertion events. The push-pull output drives high to VCC with VOH ≥ 0.8×VCC at 500µA source current and low to ≤0.3V at 90µA sink current, supporting direct interfacing with MCU reset inputs or MOSFET gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - supports single-supply operation across common logic rails including 1.8V, 3.3V, and 5V systems. |
| UVSET Threshold Accuracy | ±1% over –40°C to +125°C - ensures reliable undervoltage detection without calibration across automotive/industrial temperature extremes. |
| Supply Current | 10µA typical - enables always-on supervision in battery-backed or low-power IoT nodes without significant quiescent drain. |
| Delay Range | 40µs to 190ms - configurable via 0pF to 0.047µF capacitor on CDELAY, covering short reset pulses and long power-rail stabilization windows. |
| Output Type | Active-high push-pull - eliminates need for external pull-up resistor, simplifies PCB layout, and ensures fast, rail-to-rail logic-level transitions. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and medical diagnostic equipment environments. |
| Package | 6-pin µDFN (1.0mm × 1.5mm) - ultra-compact footprint ideal for dense portable and wearable electronics where board space is constrained. |
Pinout & Package
MAX16895AALT+T is housed in a 6-pin ultra-thin µDFN package (1.0mm × 1.5mm, 0.5mm pitch), RoHS-compliant, with wettable flank leads for automated optical inspection. Thermal resistance θJA = 477°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 6) | Power supply input | Accepts 1.5V–5.5V; bypassing with 0.1µF ceramic capacitor to GND required for noise immunity in switching power systems. |
| OUT (Pin 4) | Active-high push-pull output | Drives high to VCC or low to GND; directly interfaces with microcontroller reset pins or MOSFET gate drivers without pull-up components. |
| CDELAY (Pin 5) | Capacitor-adjustable timing node | Connects external timing capacitor to GND; internal 250nA current source charges it to set delay per tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs. |
| ENABLE (Pin 3) | Active-high logic-enable input | Drive high to assert output after delay; drive low to immediately deassert output regardless of UVSET state - enables system-level sequencing control. |
| UVSET (Pin 1) | High-impedance voltage monitor input | Accepts divided-down rail voltage; 15nA max input leakage allows use of MΩ-range resistors without measurement error. |
| GND (Pin 2) | Ground reference | Primary return path for all internal circuits and output driver; must be connected to system ground plane with low-inductance routing. |
Key Features
| Feature | Design Value |
|---|---|
| 1% threshold accuracy over temperature | Ensures consistent trip point across –40°C to +125°C without recalibration, critical for reliable power-up sequencing in harsh environments. |
| Capacitor-adjustable delay (40µs–190ms) | Replaces multiple fixed-delay supervisors with one part, reducing BOM count and enabling fine-tuned timing alignment between power rails. |
| 10µA typical supply current | Permits continuous supervision in energy-sensitive applications such as implantable medical devices or remote sensor nodes. |
| Active-high enable + active-high push-pull output | Simplifies control logic design by eliminating level-shifting or inversion requirements when interfacing with standard CMOS microcontrollers. |
| Ultra-small 6-pin µDFN (1.0mm × 1.5mm) | Reduces PCB area by >50% vs. SOT23-6, enabling integration into wearables, hearing aids, and miniaturized test equipment. |
Applications
| Power-Supply Sequencing | Microcontroller Reset Supervision |
|---|---|
Use Scenario: Coordinating startup order of multiple DC-DC converters (e.g., 5V → 3.3V → 1.2V) in FPGA-based embedded systems. IC Role / Device Role / Timing Role: Sequencing supervisor that asserts downstream enable signals only after upstream rail exceeds threshold and delay expires. Use Value: Prevents latch-up and back-powering by enforcing strict voltage ramp order, using a single 0.047µF capacitor to set 190ms inter-rail delay. | Use Scenario: Providing clean, glitch-free reset signal to ARM Cortex-M7 during cold start and brownout conditions. IC Role / Device Role / Timing Role: Precision reset generator with 1% threshold accuracy and 40µs minimum delay, directly driving MCU RESET pin. Use Value: Guarantees processor initialization only after VCC stabilizes above 1.5V, eliminating spurious resets caused by ±10mV threshold drift. |
| Overvoltage Protection Control | Portable Medical Instrument Power Management |
Use Scenario: Monitoring battery voltage in a lithium-ion powered handheld analyzer to disable charging circuit if voltage exceeds 4.3V. IC Role / Device Role / Timing Role: Adjustable overvoltage detector with external resistor divider on UVSET and capacitor-delayed shutdown command. Use Value: Delays cutoff action by 100ms to avoid false triggers from transient spikes, while maintaining <10µA quiescent draw during standby. | Use Scenario: Managing power sequencing for multi-rail subsystems (analog front-end, digital core, display backlight) in a portable ultrasound probe. IC Role / Device Role / Timing Role: Compact supervisory hub cascaded with additional MAX16895A units to enforce strict 3.3V → 1.8V → 5V enable sequence. Use Value: Achieves full-system sequencing in <3mm² PCB area using µDFN packages, meeting IEC 60601 leakage and size constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sequencing/supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16895PALT+T | Fixed 150ns propagation delay instead of capacitor-adjustable delay; identical pinout, supply range, and threshold accuracy. | Suitable for immediate enable-response applications (e.g., fast fault shutdown), but cannot implement long sequencing delays (>1µs). | Select MAX16895PALT+T only when deterministic sub-microsecond response is required and external timing capacitors are undesirable. |
| TLV809E33DBVR | Fixed 3.3V reset threshold, no adjustable delay, SOT-23-3 package, 1.6µA supply current, no enable input. | Limited to single-rail reset generation; lacks sequencing capability, adjustable threshold, or enable control. | Choose TLV809E33DBVR for cost-sensitive, single-voltage monitoring where sequencing and flexibility are unnecessary. |
Compared with MAX16895PALT+T and TLV809E33DBVR, the MAX16895AALT+T uniquely combines adjustable threshold (via resistor divider), capacitor-programmable delay, active-high enable, and push-pull output in a 1.0mm × 1.5mm package - making it the only option for compact, multi-rail, user-configurable sequencing in extended-temperature designs.
Availability
MAX16895AALT+T is available at Aetrix Electronics and suitable for power-supply sequencing, microcontroller reset supervision, overvoltage protection control, and portable medical instrument power management requiring stable component supply across industrial, automotive, and medical production cycles.
Supply support for MAX16895AALT+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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX16895–MAX16899 family was designed specifically for ultra-compact, high-accuracy power sequencing and supervisory functions in thermally demanding, space-constrained applications - emphasizing low quiescent current, wide supply range, and flexible timing configuration.
FAQ
What is the function of the CDELAY pin on the MAX16895AALT+T?
The CDELAY pin on the MAX16895AALT+T connects to an external capacitor to set the timing delay between UVSET crossing 0.5V (or ENABLE going high) and the OUT pin asserting high. An internal 250nA current source charges the capacitor; when voltage reaches 1.0V, the output triggers. Delay follows tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs, enabling precise control from 40µs to 190ms. This functionality is confirmed in the MAX16895AALT+T Electrical Characteristics table and Functional Diagram.
Does the MAX16895AALT+T require an external pull-up resistor on its OUT pin?
No, the MAX16895AALT+T does not require an external pull-up resistor because it features an active-high push-pull output. The output actively drives high to VCC and low to GND, eliminating reliance on external components for logic-level definition. This is explicitly stated in the Pin Descriptions section and confirmed in the Electrical Characteristics table under "Output High Voltage (Push-Pull)" and "Output Low Voltage" parameters for MAX16895AALT+T.
What is the maximum input voltage allowed on the UVSET pin of the MAX16895AALT+T?
The MAX16895AALT+T UVSET pin has an absolute maximum rating of –0.3V to +6V, but its functional operating range is constrained by the internal 0.5V comparator threshold and input leakage specification. Per the Electrical Characteristics table, UVSET is guaranteed to operate correctly when monitored voltage is set via external resistive divider to cross 0.495V–0.505V. Input current is limited to ±15nA, allowing safe use with high-value dividers. Exceeding +6V risks permanent damage per Absolute Maximum Ratings.
Can the MAX16895AALT+T be used to monitor a 1.0V supply rail?
Yes, the MAX16895AALT+T can monitor a 1.0V supply rail by configuring an external resistive divider on UVSET. Using R2 = 1MΩ and solving R1 = R2 × ((VMONITOR / 0.5) – 1) yields R1 = 1MΩ for VMONITOR = 1.0V. The 15nA max UVSET input leakage introduces negligible error with these resistor values. This method is validated in the Applications Information section and Typical Operating Circuit of the MAX16895AALT+T datasheet.
What is the operating temperature range specified for the MAX16895AALT+T?
The MAX16895AALT+T is fully specified over the operating temperature range of –40°C to +125°C, as documented in the Absolute Maximum Ratings, Electrical Characteristics, and Ordering Information sections of its datasheet. This range applies to all electrical parameters including 1% threshold accuracy, 10µA supply current, and delay timing - making it suitable for under-hood automotive, industrial motor drives, and medical diagnostic equipment deployments.
MAX16895AALT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 0.5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX16895AALT+T FAQ
1.How can I place an order for MAX16895AALT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16895AALT+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 MAX16895AALT+T reliable?
The price and inventory of MAX16895AALT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16895AALT+T is usually 5 days.
3.What payment methods are accepted for MAX16895AALT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16895AALT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16895AALT+T?
MAX16895AALT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16895AALT+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 MAX16895AALT+T?
For technical support, including MAX16895AALT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16895AALT+T requirements.
6.How does Aetrix verify that MAX16895AALT+T is sourced from the original manufacturer or authorized distributors?
All MAX16895AALT+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 MAX16895AALT+T meets industry standards.
7.What is the process for return or replacement of MAX16895AALT+T?
All MAX16895AALT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16895AALT+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 MAX16895AALT+T part is unused and in its original packaging.
Return procedure for MAX16895AALT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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