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Analog Devices Inc./Maxim Integrated MAX16023LTAT18+T
- Part No.:
- MAX16023LTAT18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16023LTAT18+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,624
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Product details
Overview
MAX16023LTAT18+T from Maxim Integrated is a low-power battery-backup circuit with integrated 1.8V LDO regulator, µP reset supervisor, and automatic VCC/BATT switchover logic. It delivers up to 100mA output current, features a 3.08V reset threshold, 145ms reset timeout, and operates from 1.53V to 5.5V input. It is designed for SRAM/RTC backup power in brownout conditions.
For engineers reviewing the MAX16023LTAT18+T datasheet, MAX16023LTAT18+T pinout, MAX16023LTAT18+T application, or MAX16023LTAT18+T equivalent, key selection criteria include regulated 1.8V output accuracy (±2.5%), push-pull RESET configuration, -40°C to +85°C operation, battery-freshness seal, and PFI/PFO power-fail monitoring capability.
Technical Context
The MAX16023LTAT18+T integrates a precision low-dropout linear regulator, a microprocessor reset supervisor with factory-trimmed 3.08V threshold, and a seamless battery switchover circuit that activates when VCC falls below VTH, drops below VBATT, and enters dropout. Its internal 30kΩ MR pullup and debounced manual-reset input support reliable system initialization.
It includes a dedicated power-fail comparator (PFI/PFO) referenced to 0.59V with 30mV hysteresis, enabling early warning of auxiliary supply collapse. The device uses an exposed-pad 8-pin TDFN package and draws only 4µA typical supply current in active mode and 3.5–5.26µA in battery-backup mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulated Output Voltage | 1.8V ±2.5% (factory-trimmed; ensures stable SRAM/RTC bias under varying load and temperature) |
| Reset Threshold Voltage | 3.08V (typ), with ±0.15V tolerance; triggers reset before critical logic voltage margin is violated |
| Reset Timeout Period | 145ms (min); guarantees sufficient hold time for µP initialization after VCC recovery |
| LDO Dropout Voltage | 150mV at 50mA (for 1.8V output); enables operation down to VCC = 1.95V while maintaining regulation |
| Supply Current (VCC) | 4µA (typ) at 25°C; minimizes primary supply drain during normal operation |
| Battery-Backup Supply Current | 3.5–5.26µA (typ) at VBATT = 3V; extends coin-cell life in long-term memory retention |
| Operating Temperature Range | -40°C to +85°C; qualified for industrial and embedded environments without derating |
| Package | 8-pin TDFN-EP (3mm × 3mm, 0.75mm height); exposes thermal pad for enhanced PCB heat dissipation |
Pinout & Package
MAX16023LTAT18+T is housed in an 8-pin TDFN-EP (exposed pad) package, 3mm × 3mm, with GND-connected EP for thermal management. Pin 1 is marked by beveled corner.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input; powers internal circuits and LDO when above dropout; bypass with 0.1µF to GND |
| 2 | BATT | Backup battery input; automatically takes over LDO supply during VCC brownout if VBATT ≥ VCC |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (30kΩ); initiates reset on logic-low pulse |
| 4 | PFI | Power-fail comparator input; monitors external voltage via resistive divider; referenced to 0.59V internal threshold |
| 5 | PFO | Active-low power-fail output; asserts when PFI falls below threshold; provides early warning of supply collapse |
| 6 | GND | Analog/digital ground reference; connects to exposed pad (EP) for thermal and electrical integrity |
| 7 | RESET | Active-low push-pull reset output; asserts on VCC drop <3.08V or MR low; holds for ≥145ms after recovery |
| 8 | OUT | Regulated 1.8V LDO output; supplies up to 100mA; requires 10µF low-ESR capacitor to GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| Battery freshness seal | Internally disconnects BATT from OUT until first VCC power-up, preserving shelf life of backup cell |
| Debounced manual-reset input | MR pin includes built-in noise immunity and 100ns glitch rejection; no external RC required |
| Power-fail comparator | Monitors auxiliary supplies down to 0.6V with 30mV hysteresis; independent of reset circuit and powered from OUT |
| Low quiescent current | 4µA typical ICC and ≤5.26µA IBATT enable >10-year coin-cell operation in RTC/SRAM backup |
| Factory-trimmed 1.8V output | ±2.5% accuracy across -40°C to +85°C ensures reliable memory bias without external trimming |
| UL® certification | Complies with IEC 60950-1 safety standard; supports certified industrial and commercial end-equipment |
Applications
| Real-Time Clock (RTC) Backup | SRAM Data Retention |
|---|---|
|
Use Scenario: Maintaining accurate timekeeping in GPS modules or smart meters during main power interruption. IC Role / Device Role / Timing Role: Provides regulated 1.8V standby power and asserts RESET to halt RTC clock domain during unsafe voltage conditions. Use Value: Prevents time drift and register corruption by guaranteeing clean power switchover and deterministic reset timing (145ms min). |
Use Scenario: Preserving volatile configuration data in industrial PLCs during AC line sags or battery replacement. IC Role / Device Role / Timing Role: Supplies continuous 1.8V to CMOS SRAM and gates CE signals via internal logic to block writes during brownout. Use Value: Eliminates need for external CE gating circuitry; prevents partial writes and memory corruption during power transitions. |
| Point-of-Sale Terminal Power Management | Portable Medical Device Memory Hold |
|
Use Scenario: Enabling fast wake-from-sleep and secure transaction logging in handheld POS terminals with coin-cell backup. IC Role / Device Role / Timing Role: Delivers 100mA peak current to SRAM and RTC while monitoring VCC with 3.08V reset threshold aligned to 3.3V logic rails. Use Value: Supports rapid boot and data integrity with sub-200ms reset assertion and ultra-low 4µA quiescent draw. |
Use Scenario: Ensuring patient parameter history remains intact in battery-powered glucose monitors or portable ECG devices. IC Role / Device Role / Timing Role: Acts as fail-safe power source and supervisor for low-voltage 1.8V SRAM, with battery-on indication for firmware status reporting. Use Value: Extends usable battery life via 3.5µA backup current and provides diagnostic visibility through PFO and RESET signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery-backup supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16024LTBT18+T | 10-pin TDFN; adds CEIN/CEOUT signal gating and BATT ON indicator; adjustable SET pin not used in fixed 1.8V version | Required when chip-enable locking during reset is needed to prevent SRAM write errors in high-speed µP systems | Select MAX16024LTBT18+T if CE signal control or battery-status flag functionality is required; otherwise MAX16023LTAT18+T offers smaller footprint and lower cost |
| TPS3808G33DBVR | Single-function 3.3V supervisor (no LDO, no battery switchover); 3.08V reset threshold; SOT-23-6 package | Only supervises main supply; cannot replace backup power path - must be paired with external LDO and battery diode ORing | Choose TPS3808G33DBVR only for cost-sensitive designs where backup power is handled separately; lacks integrated LDO and switchover logic of MAX16023LTAT18+T |
Compared with MAX16024LTBT18+T, MAX16023LTAT18+T saves board space and BOM count by omitting CE gating but sacrifices battery-status feedback. Against TPS3808G33DBVR, it delivers full single-chip backup functionality-eliminating discrete diodes, regulators, and external supervision logic-while maintaining identical reset timing and accuracy.
Availability
MAX16023LTAT18+T is available at Aetrix Electronics and suitable for real-time clock backup, SRAM data retention, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16023LTAT18+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) is a semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, computing, and communications applications.
The MAX16023/MAX16024 product line was designed specifically for compact, low-power battery-backed memory and timing applications-integrating LDO regulation, reset supervision, and switchover logic into minimal-footprint TDFN packages.
FAQ
What is the regulated output voltage of the MAX16023LTAT18+T?
The MAX16023LTAT18+T provides a factory-trimmed, fixed 1.8V regulated output with ±2.5% accuracy over -40°C to +85°C. This voltage is delivered via the OUT pin and is designed to power low-voltage SRAM or RTC circuits without external feedback components. The MAX16023LTAT18+T does not support adjustable output; only the MAX16024 variant offers that capability.
What does the "T" suffix in MAX16023LTAT18+T indicate?
The "T" suffix in MAX16023LTAT18+T denotes tape-and-reel packaging, standard for automated SMT assembly. The "+" indicates RoHS-compliant, lead-free construction. The "LTA" portion specifies push-pull RESET output, "T" reset threshold (3.08V), and "18" fixed 1.8V output - all confirmed in Maxim's official part number table for the MAX16023LTAT18+T.
Does the MAX16023LTAT18+T include battery-freshness protection?
Yes, the MAX16023LTAT18+T incorporates a battery-freshness seal that electrically isolates the BATT pin from internal circuitry until VCC is first applied. This prevents self-discharge of the backup battery during storage or before initial device power-up. The seal is latched on first VCC application and remains active across subsequent power cycles unless explicitly reset using the MR and OUT pins per datasheet procedure.
Can the MAX16023LTAT18+T monitor a second power rail?
Yes, the MAX16023LTAT18+T includes a dedicated power-fail comparator with PFI and PFO pins. By connecting PFI to a resistive divider from an auxiliary supply (e.g., 5V or 3.3V rail), the device can generate an early warning interrupt when that rail falls below ~0.59V (internally referenced). This function operates independently of the main reset circuit and is powered from the 1.8V OUT rail.
What is the maximum continuous output current of the MAX16023LTAT18+T?
The MAX16023LTAT18+T supports up to 100mA continuous output current from its integrated LDO regulator. This rating applies when powered from VCC; in battery-backup mode, the continuous BATT current is limited to 70mA per absolute maximum ratings. Exceeding 100mA at OUT may cause thermal shutdown or damage - design margin and thermal layout must accommodate worst-case load and ambient conditions.
MAX16023LTAT18+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- 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:
- 8-TDFN (3x3)
MAX16023LTAT18+T FAQ
1.How can I place an order for MAX16023LTAT18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16023LTAT18+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 MAX16023LTAT18+T reliable?
The price and inventory of MAX16023LTAT18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16023LTAT18+T is usually 5 days.
3.What payment methods are accepted for MAX16023LTAT18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16023LTAT18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16023LTAT18+T?
MAX16023LTAT18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16023LTAT18+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 MAX16023LTAT18+T?
For technical support, including MAX16023LTAT18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16023LTAT18+T requirements.
6.How does Aetrix verify that MAX16023LTAT18+T is sourced from the original manufacturer or authorized distributors?
All MAX16023LTAT18+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 MAX16023LTAT18+T meets industry standards.
7.What is the process for return or replacement of MAX16023LTAT18+T?
All MAX16023LTAT18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16023LTAT18+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 MAX16023LTAT18+T part is unused and in its original packaging.
Return procedure for MAX16023LTAT18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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