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Analog Devices Inc./Maxim Integrated MAX16020PTES+T
- Part No.:
- MAX16020PTES+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16020PTES+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
MAX16020PTES+T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated battery-backup switchover, chip-enable (CE) gating, and power-fail monitoring. It provides active-low reset output, 145ms minimum reset timeout, 1.2µA supply current, and operates from 1.53V to 5.5V to protect SRAM/RTC in brownout conditions. Used in GPS systems and point-of-sale equipment for reliable memory write protection during power loss.
For engineers reviewing the MAX16020PTES+T datasheet, MAX16020PTES+T pinout, MAX16020PTES+T application, or MAX16020PTES+T equivalent, key selection criteria include its 3.08V fixed reset threshold (suffix 'T'), 16-pin TQFN package, CEIN/CEOUT 1.5ns propagation delay, and battery-OK/battery-on indicators for backup power state visibility.
Technical Context
The MAX16020PTES+T implements a dual-path power-switching architecture: VCC connects to OUT during normal operation, while BATT takes over when VCC falls below 3.08V and VBATT > VCC. Its internal CE gating latches CEIN during reset assertion to prevent spurious writes to CMOS memory.
It integrates a 1.2s watchdog timer with WDI edge-triggered clear, a 0.6V power-fail comparator (PFI/PFO), and a low-line (LL) output asserting 2.5% above the reset threshold for early brownout warning-enabling nonmaskable interrupt-driven shutdown sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V (typical), fixed for 3V systems - ensures deterministic reset initiation before logic corruption |
| Reset Timeout Period | 145ms (min) - guarantees sufficient hold time for µP initialization after power recovery |
| Supply Current | 3.4µA (typ at 5.5V), 0.25µA in battery-backup mode - enables multi-year RTC/SRAM retention on coin cell |
| CEIN to CEOUT Propagation Delay | 1.5ns (typ) - supports high-speed µP/DSP interfaces without timing violation |
| Operating Temperature Range | -40°C to +85°C - qualified for industrial and automotive-adjacent embedded environments |
| Package | 16-pin TQFN (4mm × 4mm, 0.5mm pitch, exposed pad) - compact footprint with thermal efficiency (θJA = 40°C/W) |
| Battery Switchover Threshold | VCC falling: VCC − VBATT ≤ 0mV - prevents premature battery engagement and extends backup life |
Pinout & Package
MAX16020PTES+T is housed in a 16-pin TQFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND. Thermal performance is optimized via EP soldering to a large ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 | See pin mapping below | Exact pin numbering follows top-view layout per datasheet Rev 6 (19-4145) |
| VCC (Pin 16) | Main supply input | Accepts 1.53V–5.5V; powers internal circuitry and drives push-pull outputs |
| BATT (Pin 1) | Backup battery input | Connects to coin cell; supplies OUT when VCC fails - leakage <10nA in standby |
| MR (Pin 2) | Manual reset input | Active-low, internally pulled up to VCC (30kΩ); debounced - no external RC needed |
| PFI (Pin 3) | Power-fail comparator input | Monitors scaled VCC against 0.6V reference; hysteresis = 30mV for noise immunity |
| WDI (Pin 4) | Watchdog timer input | Edge-sensitive; clears watchdog on rising/falling transition - disable by leaving floating |
| LL (Pin 5) | Low-line indicator output | Active-low, asserts 2.5% above reset threshold - triggers NMI for controlled shutdown |
| BATT_TEST (Pin 6) | Battery-test pulse output | Open-drain, pulses low for 1.3s every 24h - enables periodic battery health verification |
| BATTOK (Pin 7) | Battery-OK status output | Asserts low if VBATT < 2.508V - signals end-of-life for backup cell |
| BATTON (Pin 8) | Battery-on indicator | Active-high; confirms active battery-backup mode - used for system-level power-state awareness |
| WDO (Pin 9) | Watchdog timeout output | Active-low; asserts if WDI stalls >1.2s (typ) - independent of RESET for fault isolation |
| PFO (Pin 10) | Power-fail output | Active-low; mirrors PFI comparator result - drives external alert or backup enable logic |
| GND (Pin 11) | Ground reference | Primary return path; EP must be soldered to same plane for thermal and noise integrity |
| RESET (Pin 12) | Reset output | Active-low, open-drain; compatible with 1.8V–5V µP reset inputs - VOL ≤ 0.3V @ 1mA |
| OUT (Pin 13) | Switched power output | Delivers VCC or BATT to load; RON = 2.6Ω (typ at 1.91V) - powers SRAM/RTC directly |
| CEOUT (Pin 14) | Chip-enable gated output | Active-low; passes CEIN only when RESET deasserted - prevents write corruption during brownout |
| CEIN (Pin 15) | Chip-enable input | Directly controls CEOUT path; 50Ω source drive capability - matches µP CE timing requirements |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CE signal gating | 1.5ns CEIN→CEOUT propagation enables use with 200+ MHz µPs without added logic |
| Battery-freshness seal | Ultra-low BATT standby current (<10nA) preserves shelf life of unused backup cells |
| Early-warning low-line (LL) output | Asserts 2.5% above reset threshold - provides ≥100µs advance notice before reset for NMI-driven save routines |
| Watchdog timer with edge-triggered clear | 1.2s timeout (typ); cleared on any WDI edge - eliminates need for precise strobe timing |
| Dual-supply switchover control | VCC-to-BATT transition occurs only when both VCC < VTH and VCC < VBATT - prevents false switching |
| UL® certification (IEC 60950-1) | Validated for safety-critical industrial and commercial end equipment without additional agency review |
Applications
| GPS Navigation Units | Point-of-Sale Terminals |
|---|---|
|
Use Scenario: Maintains real-time clock and last-known position data during vehicle ignition cycling or battery disconnect. IC Role / Device Role / Timing Role: Supervisory IC providing battery-backed power switchover, reset generation, and memory write protection. Use Value: Prevents RTC drift and map-data corruption using 3.08V reset threshold aligned with 3.3V GPS module rails. |
Use Scenario: Safeguards transaction logs and configuration EEPROM during AC power interruption or battery depletion. IC Role / Device Role / Timing Role: System supervisor enabling orderly shutdown via LL-triggered NMI and CE gating during brownout. Use Value: Eliminates need for external CE logic; 1.5ns CEIN→CEOUT delay ensures compatibility with fast SPI EEPROM interfaces. |
| Industrial PLC I/O Modules | Set-Top Box Firmware Storage |
|
Use Scenario: Preserves I/O state and calibration parameters during field power fluctuations in factory environments. IC Role / Device Role / Timing Role: Power monitor and backup controller with BATTOK/BATTON status signaling for diagnostics. Use Value: 0.25µA battery-backup current extends CR2032 life beyond 10 years; BATTOK threshold (2.508V) flags cell replacement. |
Use Scenario: Secures bootloader and channel lineup data in consumer STBs subjected to frequent power cycling. IC Role / Device Role / Timing Role: Reset generator and watchdog supervisor ensuring firmware integrity across power cycles. Use Value: 145ms reset timeout satisfies ARM-based SoC boot requirements; WDO output isolates watchdog faults from main reset path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16021PTES+T | Same pinout and features, but includes active-high RESET output (in addition to active-low) | Required where µP reset input is active-high; adds flexibility in mixed-voltage designs | Select when dual-polarity reset signaling is needed - otherwise MAX16020PTES+T is functionally identical |
| TPS3808G30DBVR | 3.0V reset threshold, no CE gating, no battery switchover, SOT-23-6 package | Suitable only for basic reset supervision - lacks backup power management and memory protection | Choose only for cost-sensitive, space-constrained designs without battery backup or CE control needs |
Compared with MAX16021PTES+T, MAX16020PTES+T offers identical supervision and CE functionality at lower BOM complexity; versus TPS3808G30DBVR, it delivers full battery-backup autonomy and memory write protection - critical for data-retentive systems.
Availability
MAX16020PTES+T is available at Aetrix Electronics and suitable for GPS navigation units, point-of-sale terminals, and industrial PLC modules requiring stable component supply with long-term manufacturability and RoHS compliance.
Supply support for MAX16020PTES+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 industrial, communications, and computing applications - emphasizing reliability, integration, and low-power operation.
The MAX160xx family targets µP-based systems needing consolidated power supervision, battery backup, and memory protection - reducing board area and design risk versus discrete solutions.
FAQ
What is the reset threshold voltage of the MAX16020PTES+T?
The MAX16020PTES+T has a fixed reset threshold of 3.08V (typical), with min/max of 2.991V/3.239V per Table 1b. This value is laser-trimmed and temperature-stable (±0.5% over -40°C to +85°C), making it suitable for 3V system supervision without external resistor networks.
Does the MAX16020PTES+T support battery-backed SRAM write protection?
Yes - the MAX16020PTES+T provides hardware-enforced write protection via its CEIN/CEOUT gating circuit. When RESET asserts during brownout, CEOUT is latched low for 12µs then pulled high, blocking spurious writes to SRAM. This function is confirmed in the functional diagram and Pin Description section for MAX16020.
What package type and dimensions does the MAX16020PTES+T use?
The MAX16020PTES+T uses a 16-pin TQFN package measuring 4mm × 4mm with 0.5mm pitch and an exposed pad (EP). The EP is internally connected to GND and must be soldered to a thermal pad for optimal junction-to-ambient dissipation (θJA = 40°C/W).
How does the battery-test feature work on the MAX16020PTES+T?
The MAX16020PTES+T includes a BATT_TEST pin (Pin 6) that pulses low for 1.3 seconds every 24 hours. During this pulse, the device applies a test load to the battery; if VBATT drops below 2.6V, BATTOK deasserts. This autonomous self-test requires no host intervention and is documented in the Pin Description and Detailed Description sections.
Can the MAX16020PTES+T operate with a 1.8V supply rail?
Yes - the MAX16020PTES+T operates from 1.53V to 5.5V, fully specified down to 1.53V. At VCC = 1.8V, it maintains 3.08V reset supervision (via internal reference), 145ms timeout, and all outputs function with VOL ≤ 0.3V at 100µA sink - validated across -40°C to +85°C per Electrical Characteristics table.
MAX16020PTES+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.946V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 145ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
MAX16020PTES+T FAQ
1.How can I place an order for MAX16020PTES+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16020PTES+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 MAX16020PTES+T reliable?
The price and inventory of MAX16020PTES+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16020PTES+T is usually 5 days.
3.What payment methods are accepted for MAX16020PTES+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16020PTES+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16020PTES+T?
MAX16020PTES+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16020PTES+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 MAX16020PTES+T?
For technical support, including MAX16020PTES+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16020PTES+T requirements.
6.How does Aetrix verify that MAX16020PTES+T is sourced from the original manufacturer or authorized distributors?
All MAX16020PTES+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 MAX16020PTES+T meets industry standards.
7.What is the process for return or replacement of MAX16020PTES+T?
All MAX16020PTES+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16020PTES+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 MAX16020PTES+T part is unused and in its original packaging.
Return procedure for MAX16020PTES+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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