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Analog Devices Inc./Maxim Integrated MAX16035PLB29+T
- Part No.:
- MAX16035PLB29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN
- Datasheet:
-
MAX16035PLB29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,299
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Product details
Overview
The MAX16035PLB29+T from Maxim Integrated is a low-power, 10-pin μDFN supervisory circuit designed for microprocessor power monitoring and battery-switchover control in portable and critical embedded systems. It features a factory-set 2.93V reset threshold (±7mV), active-low open-drain RESET and PFO outputs, battery-on (BATTON) indicator, and operates from 1.2V to 5.5V supply with 13µA quiescent current. It is used in POS terminals and set-top boxes to maintain SRAM data integrity during brownouts.
For engineers reviewing the MAX16035PLB29+T datasheet, MAX16035PLB29+T pinout, MAX16035PLB29+T application, or MAX16035PLB29+T equivalent, key selection criteria include its 2.93V reset threshold accuracy, BATTON push-pull output behavior, 140ms minimum reset timeout, and compatibility with 2mm × 2mm 10-pin μDFN layouts requiring minimal board space.
Technical Context
The MAX16035PLB29+T implements a precision voltage-monitoring architecture with independent power-fail comparator (1.235V threshold), internal 2.93V reset reference, and dedicated BATTON output that asserts high during battery-backup mode. Its reset generator enforces ≥140ms timeout after VCC recovery and supports VCC-to-OUT switchover with 40mV hysteresis.
This variant belongs to the MAX16035–MAX16039 subset featuring manual-reset input omission, no watchdog timer, no chip-enable gating, and inclusion of BATTON output. It uses an open-drain RESET/PFO configuration (denoted by "P" in part number) and is fully specified across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 2.85V (min), 2.93V (typ), 3.00V (max) - ensures reliable reset assertion for 3.0V/3.3V systems with ±7mV tolerance at 25°C |
| Supply Current (ICC) | 13µA (typ) at VCC = 2.8V - enables multi-year battery life in backup mode for SRAM retention |
| Reset Timeout Period (tRP) | 140ms (min), 280ms (max) - guarantees sufficient processor initialization time after power recovery |
| BATTON Output Type | Push-pull, high-asserted in battery mode - directly drives LEDs or external pass transistors without pull-up resistors |
| Operating Temperature Range | –40°C to +85°C - qualified for industrial and commercial environments including POS and set-top box enclosures |
| Package | 10-pin μDFN (2mm × 2mm, 0.5mm pitch) - surface-mount footprint compatible with high-density PCB layouts |
| RESET Output Structure | Active-low open-drain - allows wired-OR configuration with other system reset sources |
Pinout & Package
MAX16035PLB29+T is housed in a 10-pin, 2mm × 2mm, 0.5mm-pitch µDFN package with exposed pad (EP). Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise convention starting from top-left corner when viewed top-side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low when VCC < 2.93V, remains low ≥140ms after VCC recovery; requires external pull-up for logic-level compatibility |
| 2 - CEIN | Chip-enable input | Not functional in MAX16035 series - must be tied to GND or left unconnected per datasheet guidance |
| 3 - PFI | Power-fail input | Monitors external voltage divider; triggers PFO low when voltage falls below 1.235V (±1.5% over temp) |
| 4 - GND | Ground reference | Primary return path for all analog and digital functions; connects to EP for thermal and EMI performance |
| 5 - MR | Manual-reset input | Not present in MAX16035 - pin is NC (no connect); internal circuitry omitted per device variant definition |
| 6 - PFO | Active-low open-drain power-fail output | Asserts low on PFI threshold breach or VCC drop below reset threshold; shares open-drain structure with RESET |
| 7 - VCC | Main supply input | Accepts 1.2V–5.5V; powers internal circuitry and supplies OUT when above reset threshold |
| 8 - OUT | System power output | Sources from VCC normally; switches to BATT during brownout with ≤4.6Ω on-resistance at 2.5V/25mA |
| 9 - BATT | Backup battery input | Connects to 2.1V–5.5V battery; enables automatic switchover when VCC < VTH and VCC < VBATT – 40mV |
| 10 - CEOUT | Chip-enable output | Not functional in MAX16035 - pin is NC; internal gating logic disabled per variant specification |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On (BATTON) Indicator | Push-pull output asserting high during battery-backup mode, sinking 3.2mA at 0.4V saturation - eliminates need for external level-shifting or pull-ups |
| Low Quiescent Supply Current | 13µA typical at 2.8V - reduces standby power draw in always-on portable equipment |
| Factory-Trimmed Reset Threshold | 2.93V ±7mV (2.85V–3.00V) - eliminates external resistor networks for 3.0V system monitoring |
| Power-Fail Comparator Independence | Dedicated 1.235V reference with 1% hysteresis - enables simultaneous monitoring of secondary rails (e.g., 5V, 12V) via external dividers |
| VCC Transient Immunity | Withstands negative-going glitches down to –0.3V for durations under 100ns at 10V/ms slew rate - prevents spurious resets in noisy power environments |
Applications
| POS Terminal Power Management | Set-Top Box SRAM Backup |
|---|---|
Use Scenario: Maintains transaction data integrity during AC power interruption or battery depletion in retail point-of-sale terminals. IC Role / Device Role / Timing Role: Supervisory IC providing VCC monitoring, battery switchover, and BATTON status indication for nonvolatile SRAM retention. Use Value: Ensures zero data loss during brownouts using <2.93V reset threshold and <1µA battery standby current at 2.8V. |
Use Scenario: Preserves channel lineup and user settings in cable/satellite set-top boxes during brief power outages. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors main 3.3V rail and enables battery-backed SRAM via OUT/BATT path with 40mV switchover hysteresis. Use Value: Guarantees >140ms reset hold time and seamless VCC→BATT transition to prevent firmware corruption. |
| Industrial Controller Brownout Protection | Portable Medical Device Power Sequencing |
Use Scenario: Prevents erroneous actuator commands in programmable logic controllers during unstable 24VDC supply conditions. IC Role / Device Role / Timing Role: System-level reset generator with PFI-based early warning for auxiliary 5V supply monitoring. Use Value: Uses PFI comparator (1.235V threshold) to trigger PFO interrupt before main VCC collapse, enabling graceful shutdown. |
Use Scenario: Secures calibration data and patient history in handheld diagnostic tools powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-voltage supervisor enabling operation down to 1.2V VCC while maintaining BATTON visibility for battery-status feedback. Use Value: 13µA ICC and 1µA battery standby current extend usable runtime between charges without compromising reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16035LLB29+T | Push-pull RESET and PFO outputs instead of open-drain; identical reset threshold, BATTON, and package | Requires no external pull-up resistors on RESET/PFO; better suited for direct connection to CMOS inputs without bus contention concerns | Select when system design lacks pull-up infrastructure or demands guaranteed high-Z release on deassertion |
| MAX16039PLB29+T | Same open-drain RESET/PFO and BATTON, but includes RESETIN input (1.235V threshold) and omits CEIN/CEOUT | Enables monitoring of secondary power rails (e.g., analog supply) without adding external comparators | Choose when dual-supply monitoring is required alongside battery switchover, and CE gating is unnecessary |
Compared with MAX16035PLB29+T, the MAX16035LLB29+T simplifies interface design with push-pull outputs, while the MAX16039PLB29+T adds flexibility for multi-rail supervision-both retain identical 2.93V reset accuracy, 10-pin μDFN footprint, and BATTON functionality.
Availability
MAX16035PLB29+T is available at Aetrix Electronics and suitable for POS terminals, set-top boxes, industrial controllers, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16035PLB29+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 consumer applications.
The MAX16033–MAX16040 family was developed to replace discrete reset/battery-switch solutions in space-constrained μP systems, delivering integrated supervision with ultra-low quiescent current and factory-trimmed thresholds.
FAQ
What is the exact reset threshold voltage of the MAX16035PLB29+T?
The MAX16035PLB29+T has a factory-set reset threshold of 2.93V, with guaranteed limits of 2.85V (minimum) and 3.00V (maximum) over –40°C to +85°C. This value is laser-trimmed and specified in the Electrical Characteristics table under "RESET OUTPUT" with part-number suffix "_29". The MAX16035PLB29+T does not require external resistor networks to achieve this precision.
Does the MAX16035PLB29+T support battery switchover, and what is its switchover hysteresis?
Yes, the MAX16035PLB29+T supports automatic battery switchover: when VCC falls below the 2.93V reset threshold and drops below VBATT minus 40mV, OUT disconnects from VCC and connects to BATT. The 40mV hysteresis prevents oscillation during slow VCC decay. In battery mode, MAX16035PLB29+T delivers up to 20mA from BATT with <4.6Ω on-resistance at 2.5V.
What is the function of the BATTON pin on the MAX16035PLB29+T, and how is it driven?
The BATTON pin on the MAX16035PLB29+T is a push-pull output that asserts high exclusively during battery-backup mode (i.e., when VCC < 2.93V and VBATT > VCC + 40mV). It sinks 3.2mA at 0.4V saturation and sources ~10µA from OUT in backup mode. Unlike open-drain outputs, BATTON requires no external pull-up and can directly drive LEDs or base/gate circuits.
Can the MAX16035PLB29+T be used without a backup battery?
Yes, the MAX16035PLB29+T operates normally without a backup battery: tie BATT to GND and connect OUT directly to VCC. In this configuration, the device provides only reset supervision and power-fail warning (via PFI/PFO), with BATTON remaining low. All timing and threshold specifications remain valid, and quiescent current stays at 13µA.
What package type and pin count does the MAX16035PLB29+T use, and is it RoHS-compliant?
The MAX16035PLB29+T uses a 10-pin µDFN package measuring 2mm × 2mm with 0.5mm pitch and an exposed pad (EP) for thermal dissipation. The "+T" suffix confirms tape-and-reel packaging, and the "+" in "+T" denotes lead(Pb)-free/RoHS-compliant construction per Maxim's ordering nomenclature. The device is rated for 380.6mW continuous power dissipation at +70°C ambient.
MAX16035PLB29+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)
MAX16035PLB29+T FAQ
1.How can I place an order for MAX16035PLB29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16035PLB29+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 MAX16035PLB29+T reliable?
The price and inventory of MAX16035PLB29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16035PLB29+T is usually 5 days.
3.What payment methods are accepted for MAX16035PLB29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16035PLB29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16035PLB29+T?
MAX16035PLB29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16035PLB29+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 MAX16035PLB29+T?
For technical support, including MAX16035PLB29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16035PLB29+T requirements.
6.How does Aetrix verify that MAX16035PLB29+T is sourced from the original manufacturer or authorized distributors?
All MAX16035PLB29+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 MAX16035PLB29+T meets industry standards.
7.What is the process for return or replacement of MAX16035PLB29+T?
All MAX16035PLB29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16035PLB29+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 MAX16035PLB29+T part is unused and in its original packaging.
Return procedure for MAX16035PLB29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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