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Analog Devices Inc./Maxim Integrated MAX16036PLB29+
- Part No.:
- MAX16036PLB29+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN
- Datasheet:
-
MAX16036PLB29+.pdf
- Description:
- IC BATTERY BACKUP 2.93V 10UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,800
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Product details
Overview
The MAX16036PLB29+ 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 at 2.8V. It is used in portable equipment and critical μP systems for reliable power monitoring and backup control.
For engineers reviewing the MAX16036PLB29+ datasheet, MAX16036PLB29+ pinout, MAX16036PLB29+ application, or MAX16036PLB29+ equivalent, key selection criteria include its 2.93V precision reset threshold, RESETIN comparator with 1.235V reference, open-drain reset structure, -40°C to +85°C operation, and 2mm × 2mm 10-pin µDFN package - all critical for battery-backed SRAM retention and brownout immunity in space-constrained designs.
Technical Context
The MAX16036PLB29+ integrates a precision voltage monitor, RESETIN comparator referenced to 1.235V, power-fail comparator (PFI/PFO), and battery switchover MOSFET with 40mV hysteresis. Its RESETIN function enables user-adjustable monitoring of secondary supplies via external resistor divider, while the open-drain RESET output supports wired-OR configurations and level-shifting.
It implements chip-enable gating (CEIN/CEOUT) with <2ns propagation delay and <100Ω on-resistance, enabling real-time protection of CMOS RAM during brownouts. The device asserts RESET when VCC falls below 2.93V, when RESETIN drops below 1.235V, or when PFI falls below 1.235V - with independent timing paths and no shared internal references between these inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (min 2.85V, max 3.00V); ensures reliable reset assertion for 3.0V/3.3V supply rails under worst-case tolerance and temperature drift. |
| RESET Output Type | Active-low open-drain; allows flexible pull-up configuration, multi-source reset bus sharing, and voltage-level translation up to 6V. |
| Quiescent Supply Current | 13µA at 2.8V; enables ultra-low-power operation in always-on battery-backed systems without compromising supervision accuracy. |
| RESET Timeout Period | 140ms (min); guarantees sufficient reset hold time for full μP initialization and clock stabilization after power recovery. |
| RESETIN Threshold | 1.235V (±50mV); provides stable reference for configuring external resistor dividers to monitor secondary supplies (e.g., 2.5V, 5.0V). |
| Battery Switchover Hysteresis | 40mV; prevents oscillatory switching between VCC and BATT during slow VCC ramp-down or noisy battery transitions. |
| Operating Temperature | -40°C to +85°C; fully specified across industrial temperature range for use in embedded controllers and POS terminals. |
Pinout & Package
MAX16036PLB29+ is housed in a 2mm × 2mm, 10-pin µDFN package with exposed pad (pin 10 = GND EP). Pin 1 is marked by dot; pin numbering follows standard counter-clockwise layout starting from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain reset output; asserted when VCC < 2.93V, RESETIN < 1.235V, or PFI < 1.235V; requires external pull-up. |
| 2 | CEIN | Chip-enable input; controls CEOUT pass-gate; low during normal operation, high during reset disables CE path to protect RAM. |
| 3 | PFI | Power-fail input; monitors external supply via resistor divider; trips PFO when voltage falls below 1.235V. |
| 4 | GND | Analog/digital ground reference; connects to exposed pad (pin 10) for thermal and electrical integrity. |
| 5 | MR | Manual-reset input; internally pulled up to VCC; driving low asserts RESET for ≥140ms after release. |
| 6 | PFO | Active-low open-drain power-fail output; mirrors PFI state; also asserts low when VCC falls below reset threshold. |
| 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; supports up to 200mA load. |
| 9 | BATT | Backup battery input; automatically engages when VCC < 2.93V and VCC < VBATT – 40mV; supports 2.1V–5.5V batteries. |
| 10 | CEOUT | Chip-enable output; passes CEIN signal when RESET deasserted; held high during reset to block erroneous memory writes. |
Key Features
| Feature | Design Value |
|---|---|
| Auxiliary RESETIN Comparator | 1.235V internal reference enables precise monitoring of secondary supplies (e.g., 2.5V, 5.0V) using two external resistors - no additional ICs required. |
| Open-Drain RESET & PFO Outputs | Supports wired-OR reset buses, mixed-voltage system interfacing, and flexible pull-up selection (e.g., 1.8V, 3.3V, 5V) without level shifters. |
| Battery Switchover with 40mV Hysteresis | Prevents chattering during slow VCC decay or marginal battery conditions, ensuring clean transition to backup power without glitches on OUT. |
| Chip-Enable Gating with <2ns Delay | Enables real-time protection of CMOS RAM during brownouts; CEOUT blocks write cycles within nanoseconds of RESET assertion. |
| Ultra-Low 13µA Quiescent Current | Extends battery life in always-on backup applications; maintains full supervision functionality even at 1.2V VCC. |
Applications
| Portable Medical Monitors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered ECG and glucose meters retain SRAM data during brief AC dropout or battery swap. IC Role / Device Role / Timing Role: MAX16036PLB29+ monitors main 3.3V rail and triggers seamless switchover to coin cell; RESETIN tracks backup supply health. Use Value: Guarantees >140ms reset hold and sub-100ns CEOUT disable to prevent memory corruption during power transitions. |
Use Scenario: Remote I/O modules in factory automation require deterministic reset behavior during 24VDC supply dips. IC Role / Device Role / Timing Role: MAX16036PLB29+ uses PFI to monitor regulated 5V rail and asserts RESET before brownout affects logic; CEIN/CEOUT gates CPU address lines. Use Value: 1.235V PFI threshold and 40mV hysteresis eliminate false triggers from line noise, ensuring only genuine failures initiate reset. |
| Retail POS Terminals | Smart Energy Meters |
Use Scenario: Handheld barcode scanners lose main power mid-transaction and must preserve session data in SRAM. IC Role / Device Role / Timing Role: MAX16036PLB29+ detects 3.0V rail collapse and switches OUT to supercapacitor; RESETIN validates capacitor voltage pre-switchover. Use Value: 2.93V reset threshold matches 3.0V LDO tolerance; 13µA ICC extends supercap runtime by >20% versus alternatives. |
Use Scenario: Meters log consumption data during grid outages using backup lithium battery; must survive >10-year field life. IC Role / Device Role / Timing Role: MAX16036PLB29+ supervises 3.3V microcontroller supply and uses BATTON (via MAX16035 variant) to enable external FET - but MAX16036PLB29+ provides same core supervision with RESETIN flexibility. Use Value: Factory-trimmed 2.93V threshold and -40°C to +85°C spec ensure consistent behavior across global deployment environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16036LLB29+ | Push-pull RESET output instead of open-drain; higher drive strength (500µA source), no external pull-up needed. | Suitable where single-supply reset signaling is preferred and bus sharing is not required. | Select MAX16036LLB29+ if system lacks pull-up resistors or requires active-high compatibility via inversion. |
| TPS3808G33DBVR | Fixed 3.3V reset threshold; no RESETIN input; 350ms reset timeout; 2.5µA IQ; SOT-23-6 package. | Lacks auxiliary monitoring and battery switchover; intended for simpler single-rail monitoring only. | Choose TPS3808G33DBVR only for cost-sensitive, space-constrained designs where RESETIN and BATT functions are unnecessary. |
Compared with MAX16036LLB29+, the MAX16036PLB29+ trades push-pull drive for open-drain flexibility and bus compatibility; compared with TPS3808G33DBVR, it adds dual-supply monitoring, battery switchover, and smaller µDFN footprint - making it uniquely suited for compact, multi-rail, battery-backed μP systems.
Availability
MAX16036PLB29+ is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, retail POS terminals, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX16036PLB29+ 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 interface applications in industrial, computing, and consumer systems.
The MAX16033–MAX16040 family was engineered specifically for low-power, space-constrained μP supervision with integrated battery switchover and auxiliary monitoring - targeting portable, battery-backed, and mission-critical embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX16036PLB29+?
The MAX16036PLB29+ has a factory-set reset threshold of 2.93V, with guaranteed min/max limits of 2.85V and 3.00V over temperature and process variation. This value is laser-trimmed and specified at -40°C to +85°C; typical drift is ±0.1% over temperature as shown in the Normalized Reset Threshold vs. Temperature graph.
Does the MAX16036PLB29+ support battery switchover, and what is the switchover hysteresis?
Yes, the MAX16036PLB29+ supports automatic battery switchover: when VCC falls below 2.93V and VBATT exceeds VCC by at least 40mV, OUT switches from VCC to BATT. The 40mV hysteresis prevents oscillation during slow VCC decay or marginal battery conditions, ensuring clean, glitch-free transition.
What is the function of the RESETIN pin on the MAX16036PLB29+?
The RESETIN pin on the MAX16036PLB29+ is an auxiliary comparator input referenced to an internal 1.235V threshold. When the voltage at RESETIN falls below 1.235V, the device asserts RESET. It is designed to monitor secondary supplies (e.g., 2.5V, 5.0V) using an external resistor divider - a feature unique to the MAX16036/MAX16040 variants.
What package type and dimensions does the MAX16036PLB29+ use?
The MAX16036PLB29+ is supplied in a 2mm × 2mm, 10-pin µDFN package with exposed thermal pad (pin 10 = GND EP). It has 0.5mm pin pitch and meets JEDEC MO-229 standards; the "+" suffix denotes lead(Pb)-free/RoHS-compliant construction.
How does the MAX16036PLB29+ handle power-fail detection and reporting?
The MAX16036PLB29+ uses the PFI pin to monitor an external supply via resistor divider; when PFI voltage falls below 1.235V, the open-drain PFO pin pulls low. PFO also asserts low when VCC drops below the 2.93V reset threshold - providing dual-path power-fail indication without external logic.
MAX16036PLB29+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN
- Packaging:
- 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+ FAQ
1.How can I place an order for MAX16036PLB29+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16036PLB29+ 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+ reliable?
The price and inventory of MAX16036PLB29+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16036PLB29+ is usually 5 days.
3.What payment methods are accepted for MAX16036PLB29+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16036PLB29+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16036PLB29+?
MAX16036PLB29+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16036PLB29+ 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+?
For technical support, including MAX16036PLB29+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16036PLB29+ requirements.
6.How does Aetrix verify that MAX16036PLB29+ is sourced from the original manufacturer or authorized distributors?
All MAX16036PLB29+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX16036PLB29+?
All MAX16036PLB29+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16036PLB29+, 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+ part is unused and in its original packaging.
Return procedure for MAX16036PLB29+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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