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Analog Devices Inc./Maxim Integrated MAX6899AAZT+T
- Part No.:
- MAX6899AAZT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX6899AAZT+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,147
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Product details
Overview
The MAX6899AAZT+T from Maxim Integrated is an ultra-small, low-power supervisory circuit with adjustable voltage monitoring (0.5V threshold), capacitor-programmable delay, and active-low enable input driving an active-high push-pull output. It operates from 1.5V to 5.5V supply, supports -40°C to +125°C operation, and is used in power-supply sequencing and reset control for industrial embedded systems.
For engineers reviewing the MAX6899AAZT+T datasheet, MAX6899AAZT+T pinout, MAX6899AAZT+T application, or MAX6899AAZT+T equivalent, key selection considerations include its 0.5V monitor threshold accuracy (±0.9% over temperature), 10µA typical supply current, 40µs base propagation delay, 1.5–5.5V VCC range, and compatibility with thin SOT23 packaging for space-constrained PCB layouts.
Technical Context
The MAX6899AAZT+T implements a fixed 0.5V internal reference with 5mV hysteresis for precise voltage monitoring via external resistive dividers. Its ENABLE pin is active-low, requiring logic high to deassert output and logic low (with VIN > 0.5V) to assert output after capacitor-adjustable delay.
Delay timing is governed by an internal 250nA current source charging an external capacitor (CDELAY) to 1.0V threshold, yielding tDELAY = CCDELAY × 4.0×10⁶ + 40µs. The push-pull output delivers VOH ≥ 0.8×VCC at 500µA and VOL ≤ 0.3V at 90µA, with full rail-to-rail drive capability across the 1.5–5.5V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - supports wide-input industrial and automotive rails without external regulators |
| Monitor Threshold | 0.5V ±0.9% over -40°C to +125°C - enables accurate low-voltage rail monitoring down to 0.5V with minimal divider error |
| Supply Current | 10µA typical - ensures minimal quiescent power draw in battery-backed or always-on supervisory applications |
| Delay Programmability | Capacitor-adjustable (0.047µF → ~190ms) - allows precise sequencing intervals without firmware or external timers |
| Output Type | Active-high push-pull - provides rail-referenced, low-impedance drive without external pull-up components |
| Enable Polarity | Active-low - simplifies interface with microcontroller GPIOs configured as open-drain or active-low reset controllers |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial motor control, and harsh-environment embedded use |
Pinout & Package
MAX6899AAZT+T is packaged in a 6-pin thin SOT23 (1.60mm × 2.90mm) surface-mount package with JEDEC MO-178AC outline and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Active-low logic-enable input | Drives output false (OUT = low) when high; asserts output true (OUT = high) after delay when pulled low and IN > 0.5V |
| 2 - GND | Ground reference | Return path for all internal circuitry and CDELAY capacitor discharge; must be low-impedance for stable timing |
| 3 - IN | High-impedance monitor input | Accepts external resistive divider; triggers on rising edge above 0.5V (5mV hysteresis) with ±15nA leakage |
| 4 - OUT | Active-high push-pull output | Drives high to VCC (≥0.8×VCC at 500µA) or low to ≤0.3V (at 90µA); no external pull-up required |
| 5 - CDELAY | Capacitor-adjustable delay node | Connects external timing capacitor to GND; internal 250nA current charges it to 1.0V to trigger output assertion |
| 6 - VCC | Power supply input | 1.5V–5.5V supply; requires local 0.1µF ceramic bypass to GND for noise immunity and UVLO stability |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable threshold | 0.5V reference with 1.8% accuracy over full temperature range enables precise multi-rail monitoring using standard resistor values |
| Capacitor-programmable delay | Timing equation tDELAY = CCDELAY × 4.0×10⁶ + 40µs allows µs-to-seconds sequencing without MCU intervention or external ICs |
| Active-low enable + active-high push-pull output | Eliminates need for level-shifting or inverters when interfacing with common microcontroller reset or enable signals |
| Ultra-low supply current | 10µA typical ICC supports always-on supervision in energy-sensitive applications such as portable medical devices and IoT edge nodes |
| Wide temperature qualification | Full -40°C to +125°C specification ensures reliable operation in automotive engine compartments and industrial PLC environments |
Applications
| Power-Supply Sequencing | Microcontroller Reset Control |
|---|---|
|
Use Scenario: Coordinating startup order of multiple DC-DC converters (e.g., 12V → 5V → 3.3V → 1.8V) in FPGA-based systems. IC Role / Device Role / Timing Role: Supervisory sequencer that monitors upstream rail voltage and enables downstream regulator only after stable threshold is reached. Use Value: Prevents latch-up and brownout during power-up by enforcing strict voltage ramp dependencies with programmable inter-rail delays. |
Use Scenario: Generating a clean, glitch-free reset pulse for an ARM Cortex-M7 microcontroller after main 3.3V rail stabilizes. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high reset signal only after VCC exceeds 3.3V × 0.9 and remains stable for configurable delay. Use Value: Guarantees CPU enters known state before clock initialization, eliminating boot failures caused by marginal supply conditions. |
| Industrial Motor Drive Enable | Automotive Body Control Module (BCM) |
|
Use Scenario: Enabling gate drivers for IGBT half-bridges only after auxiliary 15V bias supply reaches regulation. IC Role / Device Role / Timing Role: High-reliability enable sequencer with active-low input tied to system controller and active-high output driving MOSFET gate driver EN pin. Use Value: Prevents shoot-through faults by ensuring gate drivers remain disabled until all bias supplies are within spec, even under cold-start conditions. |
Use Scenario: Monitoring 5V CAN transceiver supply and 3.3V microcontroller core rail in a vehicle door module. IC Role / Device Role / Timing Role: Dual-rail supervisor using cascaded MAX6899AAZT+T devices to enforce sequential wake-up and fault isolation per AEC-Q100 requirements. Use Value: Meets automotive functional safety requirements by providing deterministic reset behavior across extended temperature and voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory sequencing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6896AAZT+T | Active-low enable + active-low push-pull output; identical timing, threshold, and supply specs | Requires inverted logic path (e.g., drives reset_n instead of reset); not drop-in for active-high output designs | Select when system architecture uses active-low reset signaling and no level translation is desired |
| TLV809KDBZR | Fixed 3.08V threshold, no adjustable delay, 1.8V–6V supply, 1µA IQ, SOT23-3 package | Lacks sequencing capability; suitable only for simple undervoltage detection, not multi-stage timing | Choose only for cost-sensitive, single-threshold monitoring where delay programmability is unnecessary |
Compared with MAX6896AAZT+T and TLV809KDBZR, the MAX6899AAZT+T uniquely combines active-low enable with active-high push-pull output and capacitor-adjustable delay-enabling direct integration into non-inverting control paths while retaining full sequencing flexibility absent in fixed-threshold alternatives.
Availability
MAX6899AAZT+T is available at Aetrix Electronics and suitable for power-supply sequencing, microcontroller reset control, and industrial motor drive enable applications requiring stable component supply across automotive, industrial, and medical product lifecycles.
Supply support for MAX6899AAZT+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 demanding industrial, automotive, and communications applications.
The MAX6895–MAX6899 family was engineered specifically for ultra-compact, low-power voltage supervision and sequencing in space- and power-constrained embedded systems-emphasizing accuracy, temperature stability, and flexible enable/output polarity options.
FAQ
What is the exact monitor threshold voltage of the MAX6899AAZT+T and how stable is it over temperature?
The MAX6899AAZT+T features a fixed 0.5V internal reference with ±0.9% accuracy over the full -40°C to +125°C operating range, corresponding to 0.491V to 0.509V. This 1.8% total variation includes hysteresis (5mV), ensuring robust noise immunity during voltage transitions. The threshold is independent of VCC as long as supply remains ≥1.5V.
How do I calculate the external capacitor value for a specific delay time using the MAX6899AAZT+T?
Use the formula tDELAY = CCDELAY × 4.0×10⁶ + 40µs, where tDELAY is total delay in seconds and CCDELAY is capacitance in farads. For example, a 100nF capacitor yields tDELAY = (100×10⁻⁹) × 4.0×10⁶ + 40×10⁻⁶ = 400µs + 40µs = 440µs. Always verify timing with oscilloscope measurements due to capacitor tolerance and PCB parasitics.
Does the MAX6899AAZT+T require an external pull-up resistor on its OUT pin?
No. The MAX6899AAZT+T has an active-high push-pull output, meaning it actively drives both high (to VCC) and low (to GND). Unlike open-drain variants (e.g., MAX6897), no external pull-up resistor is needed-reducing BOM count and board area while improving rise/fall times and noise immunity.
What is the maximum allowable voltage on the CDELAY pin of the MAX6899AAZT+T?
The CDELAY pin has an absolute maximum rating of -0.3V to (VCC + 0.3V). Exceeding this range risks permanent damage. During normal operation, the internal 250nA current source charges the external capacitor to 1.00V (±50mV), so selecting a capacitor rated for ≥2.5V ensures margin against transient overshoot and process variation.
Can the MAX6899AAZT+T be used in automotive applications, and is it AEC-Q100 qualified?
The MAX6899AAZT+T is not AEC-Q100 qualified. Only MAX6895AAZT/V+T, MAX6896AAZT/V+T, and MAX6897AAZT/V+ are explicitly listed as AEC-Q100 qualified in the datasheet. For automotive body control or infotainment modules requiring qualification, select one of those variants-or validate MAX6899AAZT+T per customer-specific reliability requirements.
MAX6899AAZT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- 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:
- TSOT-23-6
MAX6899AAZT+T FAQ
1.How can I place an order for MAX6899AAZT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6899AAZT+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 MAX6899AAZT+T reliable?
The price and inventory of MAX6899AAZT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6899AAZT+T is usually 5 days.
3.What payment methods are accepted for MAX6899AAZT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6899AAZT+T transactions.
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4.How is shipping managed for MAX6899AAZT+T?
MAX6899AAZT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6899AAZT+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 MAX6899AAZT+T?
For technical support, including MAX6899AAZT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6899AAZT+T requirements.
6.How does Aetrix verify that MAX6899AAZT+T is sourced from the original manufacturer or authorized distributors?
All MAX6899AAZT+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 MAX6899AAZT+T meets industry standards.
7.What is the process for return or replacement of MAX6899AAZT+T?
All MAX6899AAZT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6899AAZT+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 MAX6899AAZT+T part is unused and in its original packaging.
Return procedure for MAX6899AAZT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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