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Analog Devices Inc./Maxim Integrated MAX16016LTBR+
- Part No.:
- MAX16016LTBR+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16016LTBR+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
MAX16016LTBR+ from Maxim Integrated is a low-power microprocessor supervisory circuit that monitors VCC supply voltage, provides battery-backup switchover control, and gates chip-enable (CE) signals to protect memory during brownout. It features a 4.63V typical reset threshold, 145ms minimum reset timeout, 1.2µA supply current, and operates from 1.53V to 5.5V. It is used in RTC backup systems where reliable power-fail detection and seamless VCC-to-battery handover are required.
For engineers reviewing the MAX16016LTBR+ datasheet, MAX16016LTBR+ pinout, MAX16016LTBR+ application, or MAX16016LTBR+ equivalent, key selection criteria include its fixed 4.63V reset threshold (L-suffix), 10-pin TDFN-EP package, push-pull RESET output, battery-freshness seal, and integrated CE gating logic for SRAM write protection.
Technical Context
The MAX16016LTBR+ integrates four core supervisory functions: power-on/power-down/brownout reset generation, automatic VCC-to-battery switchover when VCC falls below both reset threshold and VBATT, internal CE signal gating during reset to prevent memory corruption, and power-fail monitoring via PFI/PFO with 0.590V typical threshold and 30mV hysteresis.
It implements a precision bandgap reference for reset threshold stability (±0.5% over temperature), a 1.2s typical watchdog timer with WDI edge-triggered clear, and a low-line (LL) comparator asserting 2.5% above reset threshold for early warning NMI generation-though LL is absent in MAX16016 (present only in MAX16020/MAX16021).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (typical), fixed L-suffix variant - ensures reliable reset assertion for 5V systems before brownout reaches critical level |
| Reset Timeout Period | 145ms (min) - guarantees µP reset pulse width meets JEDEC JESD76B and most embedded processor requirements |
| Supply Current | 3.4µA (typ at 5.5V), 0.25µA in battery-backup mode - enables multi-year operation on coin-cell backup without compromising supervision accuracy |
| VCC Operating Range | 1.53V to 5.5V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains without external level shifting |
| Output Type | Push-pull RESET - eliminates need for external pull-up resistor, reduces BOM count and board space in cost-sensitive designs |
| Package | 10-pin TDFN-EP (3mm × 3mm, 0.8mm height) - enables high-density placement in portable and space-constrained industrial modules |
| Battery Switchover | VCC-to-BATT transition occurs when VCC < VTH and VCC < VBATT; VCC-to-OUT on-resistance ≤ 2.6Ω at 1.91V - minimizes voltage drop during backup mode |
Pinout & Package
MAX16016LTBR+ is housed in a 10-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) internally connected to GND. Thermal resistance θJA = 41°C/W enables stable operation up to +85°C ambient without heatsinking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Main supply input | Primary power source; must be bypassed with ≥0.1µF capacitor to GND; powers all internal circuits except battery-monitoring comparators |
| 2 BATT | Backup battery input | Connects to coin cell or supercap; supplies OUT during VCC failure; internal freshness seal limits leakage to ≤20nA |
| 3 MR | Manual reset input | Active-low; internally pulled up to VCC (30kΩ); debounced - allows momentary switch to GND without external RC network |
| 4 PFI | Power-fail comparator input | Monitors scaled-down VCC via resistive divider; referenced to 0.590V internal threshold with 30mV hysteresis for noise immunity |
| 5 WDI | Watchdog timer input | Edge-triggered; clears internal 1.2s timer on rising/falling edge; left floating to disable watchdog function |
| 6 BATTON | Battery-on indicator | Active-high open-drain output - signals battery-backup mode activation; used to enable backup peripherals or log power events |
| 7 PFO | Power-fail comparator output | Active-low open-drain - asserts when PFI falls below threshold; drives interrupt line or status LED without external pull-up if needed |
| 8 GND | Ground reference | System ground return; EP pad must be soldered to large copper pour for thermal and EMI performance |
| 9 RESET | Reset output | Active-low push-pull - directly drives µP RESET pin; VOL ≤ 0.3V at 3.2mA sink ensures valid logic low across voltage range |
| 10 OUT | Switched output | Connects to VCC or BATT based on supervision state; powers SRAM/RTC; requires ≥0.1µF bypass capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Battery-freshness seal | ≤20nA leakage at VBATT = 5.5V - preserves shelf life of backup battery for >10 years in storage |
| VCC-to-OUT on-resistance | 2.6Ω (typ at VCC = 1.91V, IOUT = 10mA) - limits voltage drop to <26mV under load, ensuring stable SRAM retention voltage |
| Reset propagation delay | 20µs (VCC falling at 10V/ms) - enables fast response to transient dips while avoiding false triggers from short spikes |
| Watchdog timeout accuracy | ±35% over -40°C to +85°C - sufficient for non-safety-critical firmware recovery without calibration |
| UL® certification | IEC 60950-1 compliant - satisfies safety requirements for industrial and commercial end-equipment without additional isolation |
Applications
| Real-Time Clock (RTC) Backup | CMOS SRAM Write Protection |
|---|---|
|
Use Scenario: Maintaining timekeeping and calendar data in GPS modules during vehicle ignition-off periods. IC Role / Device Role / Timing Role: Supervisory IC providing VCC brownout detection, automatic switchover to backup battery, and BATTON signaling for RTC power management. Use Value: Ensures uninterrupted RTC operation with <0.55µA battery drain in backup mode and guaranteed 145ms reset hold time for clean µP restart. |
Use Scenario: Preventing data corruption in set-top box nonvolatile SRAM during AC mains interruption. IC Role / Device Role / Timing Role: Memory protection controller asserting CE gating during reset to block write cycles when VCC is unstable. Use Value: Eliminates need for external CE logic; 1.5ns CEIN-to-CEOUT delay (not applicable to MAX16016) is replaced by robust reset-driven write lockout. |
| Industrial Control Panel | Point-of-Sale Terminal |
|
Use Scenario: Preserving configuration settings and sensor calibration data in programmable logic controllers during factory power fluctuations. IC Role / Device Role / Timing Role: System supervisor generating reset pulses, monitoring power-fail via PFI, and signaling battery status via BATTON/BATTOK. Use Value: Delivers deterministic reset behavior across -40°C to +85°C with ±0.5% reset threshold drift, meeting IEC 61000-4-11 immunity requirements. |
Use Scenario: Securing transaction logs and encryption keys in retail terminals during brief utility outages. IC Role / Device Role / Timing Role: Dual-supervision device enabling both main power monitoring (RESET) and early warning (PFO) for graceful shutdown initiation. Use Value: PFO's 0.590V threshold with 30mV hysteresis provides reliable power-fail detection down to 0.6V, allowing >100ms warning before VCC collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16020ATEZ+ | 16-pin TQFN; includes CEIN/CEOUT gating (1.5ns delay), LL output, and BATT_TEST - lacks BATTON but adds more supervision granularity | Required for designs needing active CE signal control during brownout; supports higher pin-count layouts with dedicated CE path | Select when SRAM write protection via hardware CE gating is mandatory and board space allows 16-pin footprint |
| TPS3808G33DBVR | Single-channel supervisor (no battery switchover or CE gating); 3.3V fixed reset; 1.5µA quiescent current; SOT-23-6 package | Suitable only for basic reset generation - cannot replace MAX16016LTBR+ in battery-backed RTC or memory backup roles | Choose only for cost-optimized, non-backup applications where VCC monitoring alone suffices |
Compared with MAX16020ATEZ+, MAX16016LTBR+ offers smaller footprint and lower cost but omits CE gating and LL warning; versus TPS3808G33DBVR, it delivers full battery-switchover functionality essential for data retention - making it irreplaceable in backup-critical systems.
Availability
MAX16016LTBR+ is available at Aetrix Electronics and suitable for real-time clock backup, industrial control panels, and point-of-sale terminals requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX16016LTBR+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX16016LTBR+ belongs to Maxim's µP supervisory family designed specifically for reliable power monitoring, battery backup control, and memory protection in resource-constrained embedded systems operating from -40°C to +85°C.
FAQ
What is the reset threshold voltage of the MAX16016LTBR+?
The MAX16016LTBR+ has a fixed reset threshold of 4.63V (typical), with a guaranteed range of 4.508V to 4.906V per Table 1a. This L-suffix variant is optimized for 5V systems and maintains ±0.5% stability over -40°C to +85°C, ensuring consistent reset behavior across operating conditions. The MAX16016LTBR+ uses an internal precision bandgap reference to achieve this accuracy without external components.
Does the MAX16016LTBR+ support battery backup switchover?
Yes, the MAX16016LTBR+ fully supports automatic battery backup switchover. When VCC falls below both the reset threshold (4.63V) and VBATT, the internal MOSFET connects BATT to the OUT pin to maintain power to SRAM or RTC. The device draws only 0.25µA in battery-backup mode and includes a battery-freshness seal limiting leakage to ≤20nA - enabling multi-year coin-cell operation. The BATTON output signals active backup mode.
What package type is used for the MAX16016LTBR+?
The MAX16016LTBR+ is packaged in a 10-pin TDFN-EP (3mm × 3mm, 0.8mm height) with exposed pad. This RoHS-compliant, lead-free package features θJA = 41°C/W and requires soldering the EP pad to a large ground plane for optimal thermal performance. Its compact size supports high-density PCB layouts in portable and industrial equipment where space is constrained.
Can the MAX16016LTBR+ be used with 3.3V or 2.5V systems?
No - the MAX16016LTBR+ is a fixed-threshold device with a 4.63V nominal reset point (L-suffix), intended exclusively for 5V systems. For 3.3V applications, consider the MAX16016MTBR+ (3.08V typical), and for 2.5V systems, the MAX16016STBR+ (2.93V typical). All share identical pinout and functionality; only the reset threshold suffix differs. Using MAX16016LTBR+ on sub-5V rails will cause premature or continuous reset assertion.
Does the MAX16016LTBR+ include a watchdog timer?
Yes, the MAX16016LTBR+ integrates a watchdog timer with a typical timeout of 1.2s (range 0.83s to 1.64s). The WDI input is edge-triggered: a rising or falling transition clears the timer. If WDI remains static beyond timeout, RESET is asserted for the full 145ms–285ms period. The watchdog can be disabled by leaving WDI unconnected or driving it with a three-state output - no configuration register is required.
MAX16016LTBR+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 145ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX16016LTBR+ FAQ
1.How can I place an order for MAX16016LTBR+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16016LTBR+ 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 MAX16016LTBR+ reliable?
The price and inventory of MAX16016LTBR+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16016LTBR+ is usually 5 days.
3.What payment methods are accepted for MAX16016LTBR+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16016LTBR+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16016LTBR+?
MAX16016LTBR+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16016LTBR+ 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 MAX16016LTBR+?
For technical support, including MAX16016LTBR+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16016LTBR+ requirements.
6.How does Aetrix verify that MAX16016LTBR+ is sourced from the original manufacturer or authorized distributors?
All MAX16016LTBR+ 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 MAX16016LTBR+ meets industry standards.
7.What is the process for return or replacement of MAX16016LTBR+?
All MAX16016LTBR+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16016LTBR+, 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 MAX16016LTBR+ part is unused and in its original packaging.
Return procedure for MAX16016LTBR+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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