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Analog Devices Inc./Maxim Integrated MAX16035LLB46+
- Part No.:
- MAX16035LLB46+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN
- Datasheet:
-
MAX16035LLB46+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
MAX16035LLB46+ from Maxim Integrated is a low-power, 10-pin μDFN supervisory IC for microprocessor systems requiring precision battery-backed power monitoring. It provides active-low push-pull reset (VTH = 4.63 V), battery-on indicator (BATTON), and independent power-fail warning (PFI/PFO), with 140 ms minimum reset timeout and 13 µA quiescent current - enabling reliable SRAM retention in portable POS terminals and industrial controllers.
For engineers reviewing the MAX16035LLB46+ datasheet, MAX16035LLB46+ pinout, MAX16035LLB46+ application, or MAX16035LLB46+ equivalent, key selection criteria include factory-set 4.63 V reset threshold, BATTON push-pull output behavior, 10-pin μDFN-10 package compatibility, and support for battery switchover down to 1.2 V supply operation.
Technical Context
The MAX16035LLB46+ implements a dedicated battery-switchover path with MOSFET-controlled OUT switching between VCC and BATT, activated when VCC falls below 4.63 V and VBATT exceeds VCC by ≥40 mV. Its internal 1.235 V reference enables precise PFI and RESETIN comparators, while the BATTON output asserts high only during validated battery-backup mode - not during startup or floating-BATT conditions.
Unlike general-purpose supervisors, this variant integrates no manual-reset (MR), watchdog (WDI), or chip-enable gating (CEIN/CEOUT) circuitry - confirmed by its position in the MAX16035 family row of the Selector Guide. All timing-critical functions (reset timeout, PFI-to-PFO delay, BATTON assertion) are fully specified across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 4.63 V (factory-trimmed, ±0.12 V tolerance) - ensures clean reset assertion before 5.0 V system rails collapse. |
| Reset Timeout Period | 140–280 ms - guarantees sufficient hold time for μP initialization after power recovery. |
| Quiescent Supply Current | 13 µA at VCC = 2.8 V - enables multi-year battery backup in always-on instrumentation. |
| Battery-Switchover Threshold | VCC − VBATT ≤ −40 mV (falling) - prevents oscillation during slow brownout transitions. |
| BATTON Output Type | Active-high push-pull - drives LEDs or external pass transistors without pull-up resistors. |
| Operating Temperature Range | −40°C to +85°C - qualified for industrial control and set-top box environments. |
| Package | 10-pin μDFN (2 mm × 2 mm, 0.5 mm pitch) - supports high-density PCB layouts with thermal pad. |
Pinout & Package
MAX16035LLB46+ uses a 10-pin, 2 mm × 2 mm μDFN package with exposed thermal pad (pin 10 = GND). Pin 1 is RESET (active-low push-pull), pin 3 is PFI, pin 4 is GND, pin 5 is BATTON, pin 6 is PFO, pin 7 is VCC, pin 8 is OUT, pin 9 is BATT, and pins 2 & 10 are CEIN and GND respectively - per Maxim's official pin description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Asserts low for ≥140 ms after VCC rises above 4.63 V; compatible with standard μP reset inputs. |
| 3 - PFI | Power-fail input | Monitors external voltage divider; triggers PFO low when input falls below 1.235 V. |
| 4 - GND | Ground reference | Primary return path for all analog and digital circuits; connects to thermal pad for thermal dissipation. |
| 5 - BATTON | Battery-on status indicator | Drives high only when VCC < 4.63 V AND VBATT > VCC + 40 mV - unambiguous backup-mode confirmation. |
| 6 - PFO | Active-low power-fail output | Open-drain/push-pull (L version) output tied to μP NMI or interrupt line upon PFI trip. |
| 7 - VCC | Main supply input | Accepts 1.2 V to 5.5 V; powers internal circuitry and sources OUT until switchover condition occurs. |
| 8 - OUT | System power output | Delivers up to 200 mA from VCC or BATT; automatically switches to battery when VCC fails. |
| 9 - BATT | Backup battery input | Accepts 0 V to 6 V; supplies OUT during brownout; draws ≤2 µA standby current at VBATT = 2.8 V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 4.63 V reset threshold | Eliminates external resistor networks and calibration - reduces BOM count and layout area. |
| BATTON push-pull output | Sinks 3.2 mA at 0.4 V saturation - directly drives status LEDs or base of NPN pass transistor. |
| 13 µA supply current at 2.8 V | Extends coin-cell life beyond 10 years in low-duty-cycle backup applications. |
| Independent PFI comparator | Enables monitoring of secondary rails (e.g., 3.3 V, 2.5 V) without loading primary VCC domain. |
| 40 mV switchover hysteresis | Prevents chattering during slow VCC decay - critical for stable SRAM retention in POS equipment. |
Applications
| Portable POS Terminals | Industrial Controllers |
|---|---|
Use Scenario: Battery-backed memory retention during AC power loss in retail payment terminals. IC Role / Device Role / Timing Role: Supervisory IC providing reset assertion, battery switchover, and BATTON status indication. Use Value: Guarantees 140 ms minimum reset hold time and sub-2 µA battery drain - preserving transaction logs across power cycles. | Use Scenario: Maintaining real-time clock and configuration memory during factory floor brownouts. IC Role / Device Role / Timing Role: Power-monitoring supervisor with PFI-triggered interrupt and fail-safe OUT switching. Use Value: 1.235 V PFI reference enables accurate detection of 3.3 V auxiliary rail failure - preventing corrupted I/O state. |
| Set-Top Boxes | Intelligent Instrumentation |
Use Scenario: Preserving channel lineup and parental lock settings during brief utility outages. IC Role / Device Role / Timing Role: Reset generator and battery switchover controller with 4.63 V threshold aligned to 5 V LDO dropout. Use Value: Factory-trimmed VTH eliminates need for external voltage dividers - improving production yield and long-term stability. | Use Scenario: Securing calibration data and sensor history in handheld multimeters with CR2032 backup. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor enabling multi-year battery life in sleep mode. Use Value: 13 µA ICC at 2.8 V extends CR2032 service life to >7 years - reducing field maintenance cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16035PLB46+ | Same reset threshold and features, but open-drain PFO and RESET outputs instead of push-pull. | Requires external pull-up resistors on RESET and PFO lines; unsuitable where bus contention or fast rise times are critical. | Select only if system design already includes pull-ups or needs wired-OR interrupt capability. |
| TPS3808G33DBVR | 3.3 V fixed reset threshold, no BATTON output, no battery switchover function, SOT-23-6 package. | Lacks battery management features - cannot replace MAX16035LLB46+ in SRAM backup applications. | Use only for basic 3.3 V supply monitoring where backup functionality is handled externally. |
Compared with MAX16035PLB46+, the MAX16035LLB46+ offers superior drive strength and noise immunity via push-pull outputs; compared with TPS3808G33DBVR, it delivers integrated battery switchover and status indication - eliminating two discrete components and associated layout complexity.
Availability
MAX16035LLB46+ is available at Aetrix Electronics and suitable for portable POS terminals, industrial controllers, and intelligent instrumentation requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX16035LLB46+ 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, sensing, and connectivity applications - with emphasis on reliability and integration for demanding embedded systems.
The MAX16033–MAX16040 product line targets space-constrained, battery-sensitive microprocessor systems needing integrated reset, power-fail warning, and seamless battery switchover - specifically optimized for μDFN packaging and ultra-low quiescent current.
FAQ
What is the exact reset threshold voltage of the MAX16035LLB46+?
The MAX16035LLB46+ has a factory-set reset threshold voltage of 4.63 V, with a guaranteed range of 4.50 V to 4.75 V over temperature (−40°C to +85°C). This value is laser-trimmed and does not require external resistor networks - ensuring consistent performance across production units without calibration.
Does the MAX16035LLB46+ support battery switchover from a supercapacitor?
Yes, the MAX16035LLB46+ supports supercapacitor backup via the BATT pin. When VCC drops below 4.63 V and VBATT exceeds VCC by ≥40 mV, the device automatically switches OUT to the supercap - with typical BATT-to-OUT on-resistance of 4.6 Ω at 2.5 V and 25 mA. No external diodes or FETs are required.
Is the BATTON output of the MAX16035LLB46+ push-pull or open-drain?
The BATTON output of the MAX16035LLB46+ is a push-pull driver, capable of sinking 3.2 mA at 0.4 V saturation and sourcing ~10 µA from OUT in battery-backup mode. This eliminates the need for external pull-up resistors and enables direct LED driving or base biasing of external NPN transistors.
Can the MAX16035LLB46+ operate with a 1.2 V supply voltage?
Yes, the MAX16035LLB46+ operates down to 1.2 V on VCC and maintains valid reset assertion (RESET low) even at 1.2 V supply - enabling compatibility with ultra-low-voltage microcontrollers and ensuring robust brownout detection across the full 1.2 V to 5.5 V operating range.
What package type and pin count does the MAX16035LLB46+ use?
The MAX16035LLB46+ uses a 10-pin μDFN package measuring 2 mm × 2 mm with 0.5 mm pitch and an exposed thermal pad (pin 10). It is distinct from the 8-pin variants (e.g., MAX16039) and shares pinout compatibility with other 10-pin members of the MAX16033–MAX16040 family such as MAX16033LLB46+.
MAX16035LLB46+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- 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)
MAX16035LLB46+ FAQ
1.How can I place an order for MAX16035LLB46+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16035LLB46+ 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 MAX16035LLB46+ reliable?
The price and inventory of MAX16035LLB46+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16035LLB46+ is usually 5 days.
3.What payment methods are accepted for MAX16035LLB46+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16035LLB46+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16035LLB46+?
MAX16035LLB46+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16035LLB46+ 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 MAX16035LLB46+?
For technical support, including MAX16035LLB46+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16035LLB46+ requirements.
6.How does Aetrix verify that MAX16035LLB46+ is sourced from the original manufacturer or authorized distributors?
All MAX16035LLB46+ 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 MAX16035LLB46+ meets industry standards.
7.What is the process for return or replacement of MAX16035LLB46+?
All MAX16035LLB46+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16035LLB46+, 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 MAX16035LLB46+ part is unused and in its original packaging.
Return procedure for MAX16035LLB46+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16035LLB46+ Tags
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