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Analog Devices Inc./Maxim Integrated MAX16036PLB29+T
- Part No.:
- MAX16036PLB29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN
- Datasheet:
-
MAX16036PLB29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,614
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Product details
Overview
The MAX16036PLB29+T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary adjustable-reset input (RESETIN), active-low open-drain reset output, and battery switchover capability. It operates from 1.2V to 5.5V, features a factory-set 2.93V reset threshold (±70mV), 140ms minimum reset timeout, and consumes only 13µA quiescent current. It is used in portable equipment and critical μP systems requiring reliable power monitoring and backup-battery handover.
For engineers reviewing the MAX16036PLB29+T datasheet, MAX16036PLB29+T pinout, MAX16036PLB29+T application, or MAX16036PLB29+T equivalent, key selection criteria include its 2.93V reset threshold accuracy, RESETIN comparator with 1.235V reference, open-drain reset structure, 10-pin µDFN package, and support for battery-backed SRAM retention during brownout.
Technical Context
The MAX16036PLB29+T implements a precision voltage-monitoring architecture centered on dual comparators: one for VCC against a trimmed internal bandgap reference (2.93V ±70mV), and another for the external RESETIN pin referenced to a stable 1.235V internal reference. Its reset generator enforces a guaranteed 140ms minimum assertion time after VCC recovery or RESETIN release.
It integrates a low-impedance MOSFET-based battery switchover path (RON ≤ 4.6Ω at 2.5V) and an open-drain PFO output tied to the same power-fail comparator as PFI. The device lacks watchdog or manual-reset inputs-its variant-specific feature set is strictly limited to RESETIN, PFI/PFO, battery switchover, and chip-enable gating (CEIN/CEOUT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±70mV - sets precise brownout detection point for 3.0V/3.3V systems |
| Reset Timeout Period | 140ms min - ensures μP completes full initialization before release |
| Supply Current | 13µA typ at 2.8V - enables multi-year battery life in backup mode |
| RESET Output Type | Active-low open-drain - allows wired-OR configuration and level shifting |
| RESETIN Threshold | 1.235V ±50mV - enables accurate monitoring of secondary supplies via external resistor divider |
| Operating Voltage Range | 1.2V to 5.5V - supports operation down to single-cell Li-ion or coin-cell voltages |
| Package | 10-pin µDFN (2mm × 2mm) - provides compact footprint for space-constrained portable designs |
Pinout & Package
MAX16036PLB29+T is housed in a 10-pin, 2mm × 2mm, 0.5mm pitch µDFN package with exposed thermal pad (pin 10 = GND). Pin 1 is marked by dot; pin numbering follows standard counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain reset output; asserts when VCC < 2.93V or RESETIN < 1.235V |
| 2 | CEIN | Chip-enable input; gates CE signal to CEOUT during reset to prevent RAM corruption |
| 3 | PFI | Power-fail input; triggers PFO when voltage falls below 1.235V |
| 4 | GND | Ground reference for all analog and digital functions |
| 5 | RESETIN | Adjustable reset input; comparator references internal 1.235V; used to monitor secondary supply |
| 6 | PFO | Active-low open-drain power-fail output; mirrors PFI state and asserts on VCC brownout |
| 7 | VCC | Main supply input (1.2V–5.5V); powers internal circuitry and sources OUT during normal operation |
| 8 | OUT | Output rail; sourced from VCC when valid, switches to BATT during backup mode |
| 9 | BATT | Backup battery input; supplies OUT when VCC drops below reset threshold and VBATT > VCC + 40mV |
| 10 | CEOUT | Chip-enable output; passes CEIN signal unless reset is asserted, then holds high or low per timing rules |
Key Features
| Feature | Design Value |
|---|---|
| Auxiliary RESETIN comparator | 1.235V internal reference enables precise monitoring of secondary supplies (e.g., 2.5V, 1.8V rails) using external resistive dividers |
| Open-drain RESET/PFO outputs | Supports flexible interface with multiple logic families and enables shared reset bus configurations |
| Battery switchover with hysteresis | 40mV automatic hysteresis prevents oscillation during slow VCC decay; BATT-to-OUT RON ≤ 4.6Ω ensures low dropout |
| Ultra-low quiescent current | 13µA typical ICC and 2µA max IBATT in backup mode extend coin-cell lifetime beyond 10 years |
| Chip-enable gating logic | Prevents erroneous writes to CMOS RAM during brownout by blocking CE transitions for ≥1µs after reset assertion |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered wearable ECG sensor continuously logging data to SRAM during intermittent charging cycles. IC Role / Device Role / Timing Role: Supervisory IC monitors main Li-ion supply (3.0V) and asserts RESET if voltage drops below 2.93V; switches SRAM supply to backup coin cell via OUT/BATT path. Use Value: Ensures data integrity across power interruptions; 13µA supply current extends coin-cell life to >12 years in sleep mode. | Use Scenario: Remote environmental monitor operating unattended for months on primary battery, with supercapacitor backup. IC Role / Device Role / Timing Role: Resets microcontroller and gates chip-enable during brownout; uses RESETIN to monitor supercap voltage via resistor divider. Use Value: Prevents corrupted flash writes during voltage sag; RESETIN's 1.235V reference enables accurate 2.7V supercap trip point with <±1% error. |
| Point-of-Sale Terminals | Smart Utility Meters |
Use Scenario: Handheld POS terminal with volatile SRAM cache storing transaction buffers before secure upload. IC Role / Device Role / Timing Role: Provides 140ms guaranteed reset pulse and battery-backed SRAM retention during AC adapter disconnect or battery swap. Use Value: Eliminates need for external reset supervisor or discrete backup diode; 2mm × 2mm µDFN saves PCB area in compact handheld form factor. | Use Scenario: Electricity meter with real-time clock and tamper-detection SRAM powered by main supply and backup lithium battery. IC Role / Device Role / Timing Role: Monitors both VCC (5V rail) and auxiliary 3.3V RTC supply via RESETIN; asserts RESET and BATTON when either fails. Use Value: Dual-supply monitoring ensures RTC continues running even if main regulator fails; open-drain outputs interface directly with meter's 3.3V logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16036LLB29+T | Push-pull RESET and PFO outputs instead of open-drain; identical reset threshold, timing, and pinout | Requires no external pull-up resistors; not suitable for wired-OR reset buses or mixed-voltage systems | Select when driving single-load reset inputs and minimizing BOM count is prioritized over bus flexibility |
| TPS3808G33DBVR | Fixed 3.3V reset threshold; push-pull RESET; no RESETIN or CE gating; 6-pin SOT-23 package | Lacks auxiliary monitoring and chip-enable protection; suited only for basic VCC supervision without backup control | Choose only for cost-sensitive, space-constrained designs needing only primary supply monitoring and no battery switchover |
Compared with MAX16036LLB29+T, the MAX16036PLB29+T offers bus-compatible open-drain outputs but requires external pull-ups; compared with TPS3808G33DBVR, it adds RESETIN monitoring and CE gating at the cost of larger package and higher complexity-making it essential for systems requiring dual-supply validation and SRAM write protection.
Availability
MAX16036PLB29+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, point-of-sale terminals, and smart utility meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX16036PLB29+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 and mixed-signal ICs for power management, sensing, and connectivity in demanding industrial and portable applications.
The MAX16033–MAX16040 family was developed specifically for ultra-low-power microprocessor supervision with integrated battery switchover and auxiliary voltage monitoring-targeting space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX16036PLB29+T?
The MAX16036PLB29+T has a factory-trimmed reset threshold of 2.93V, with a guaranteed tolerance of ±70mV (2.86V to 3.00V) over the full -40°C to +85°C temperature range. This value is specified in the Electrical Characteristics table under "Reset Threshold" for part numbers ending in "_29", and is confirmed by Maxim's official datasheet revision 2 (May 2019).
Does the MAX16036PLB29+T support battery backup for SRAM, and how does switchover work?
Yes, the MAX16036PLB29+T supports battery backup for SRAM via its BATT and OUT pins. When VCC falls below the 2.93V reset threshold and VBATT exceeds VCC by at least 40mV, the internal MOSFET automatically connects BATT to OUT. The switchover includes 40mV hysteresis to prevent oscillation, and BATT-to-OUT on-resistance is ≤4.6Ω at 2.5V, ensuring low dropout during backup mode.
What is the function of the RESETIN pin on the MAX16036PLB29+T, and what voltage does it trigger at?
The RESETIN pin on the MAX16036PLB29+T is an auxiliary reset input that asserts the RESET output when its voltage falls below 1.235V ±50mV. It uses an internal precision 1.235V reference, enabling accurate monitoring of secondary power rails (e.g., 2.5V, 1.8V) via an external resistor divider. The RESETIN-to-RESET propagation delay is 1.5µs (typ) over temperature.
Is the MAX16036PLB29+T pin-compatible with other devices in the MAX16033–MAX16040 family?
Yes, the MAX16036PLB29+T shares the same 10-pin µDFN package and pinout as all MAX16033–MAX16036 variants (e.g., MAX16033LLBxx+T, MAX16034PLBxx+T). Pin functions-including RESET, CEIN, PFI, RESETIN, PFO, VCC, OUT, BATT, GND, and CEOUT-are identical across this subset. However, unused pins (e.g., MR on MAX16033) are NC on MAX16036PLB29+T, and functionality differs per variant.
What are the absolute maximum ratings for VCC and BATT on the MAX16036PLB29+T?
The MAX16036PLB29+T has an absolute maximum rating of -0.3V to +6V for VCC and BATT pins. Exceeding these limits may cause permanent damage. Continuous VCC supply current is rated at 250mA, while BATT continuous current is limited to 40mA. These values are specified in the Absolute Maximum Ratings table of the official datasheet and apply regardless of operating mode.
MAX16036PLB29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-µDFN (2x2)
MAX16036PLB29+T FAQ
1.How can I place an order for MAX16036PLB29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16036PLB29+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 MAX16036PLB29+T reliable?
The price and inventory of MAX16036PLB29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16036PLB29+T is usually 5 days.
3.What payment methods are accepted for MAX16036PLB29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16036PLB29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16036PLB29+T?
MAX16036PLB29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16036PLB29+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 MAX16036PLB29+T?
For technical support, including MAX16036PLB29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16036PLB29+T requirements.
6.How does Aetrix verify that MAX16036PLB29+T is sourced from the original manufacturer or authorized distributors?
All MAX16036PLB29+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 MAX16036PLB29+T meets industry standards.
7.What is the process for return or replacement of MAX16036PLB29+T?
All MAX16036PLB29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16036PLB29+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 MAX16036PLB29+T part is unused and in its original packaging.
Return procedure for MAX16036PLB29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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