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Analog Devices Inc./Maxim Integrated MAX16023LTAV12+
- Part No.:
- MAX16023LTAV12+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16023LTAV12+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,452
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Product details
Overview
The MAX16023LTAV12+ from Maxim Integrated is a low-power battery-backup circuit with integrated 1.2V LDO regulator, µP reset supervisor, and automatic VCC-to-battery switchover. It delivers up to 100mA output current, features a 145ms reset timeout, 1.53V–5.5V input range, and operates across –40°C to +85°C. It is designed for SRAM/RTC backup power in brownout-prone systems such as industrial controllers and GPS modules.
For engineers reviewing the MAX16023LTAV12+ datasheet, MAX16023LTAV12+ pinout, MAX16023LTAV12+ application, or MAX16023LTAV12+ equivalent, key selection criteria include its fixed 1.2V regulated output, push-pull reset configuration, 1.575V reset threshold, battery-on indicator absence (MAX16023 variant), and 8-pin TDFN-EP package with exposed pad grounding.
Technical Context
The MAX16023LTAV12+ integrates a low-dropout linear regulator, precision reset supervisor with debounced manual-reset input (MR), and power-fail comparator (PFI/PFO). Its LDO maintains 1.2V ±2.5% output accuracy over load (1mA–100mA) and temperature (–40°C to +85°C), with dropout voltage of 150mV at 50mA.
Reset assertion occurs when VCC falls below 1.575V (typ) or MR is pulled low; deassertion follows a guaranteed 145ms minimum timeout after VCC rises above threshold. The device uses internal 30kΩ MR pullup and supports battery freshness seal activation to preserve backup battery life until first power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulated Output Voltage | Fixed 1.2V ±2.5% (1.145V–1.270V) at 1mA load; enables stable SRAM/RTC biasing without external feedback. |
| Reset Threshold Voltage | 1.575V (typ), min 1.514V / max 1.639V; triggers system reset before critical undervoltage on main supply. |
| Output Current Capability | Up to 100mA continuous; sufficient to power 32KB–1MB SRAM or RTC + oscillator circuits. |
| Supply Current (VCC mode) | 17µA (typ) at VCC = 1.7V, IOUT = 20mA; ultra-low quiescent draw extends primary supply runtime. |
| Battery-Backup Supply Current | 3.5µA–5.26µA (typ) at VBATT = 3V, no load; minimizes backup battery drain during extended outages. |
| Reset Timeout Period | 145ms (min) to 285ms (max); ensures µP completes full initialization before release from reset. |
| Operating Temperature Range | –40°C to +85°C; qualified for industrial and automotive-adjacent embedded environments. |
Pinout & Package
Package: 8-pin TDFN-EP (3mm × 3mm, 0.75mm height) with exposed pad thermally and electrically connected to GND. Requires PCB thermal pad connection for reliable operation at full load.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input (1.53V–5.5V); bypassed externally with 0.1µF capacitor to GND for noise suppression. |
| 2 | BATT | Backup battery input; automatically powers LDO when VCC drops below reset threshold and enters dropout. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (30kΩ); initiates reset on logic-low pulse ≥100ns. |
| 4 | PFI | Power-fail comparator input; referenced to 0.590V internal threshold; monitors auxiliary supply via resistive divider. |
| 5 | PFO | Active-low power-fail output; asserts when PFI falls below threshold; used for early warning or µP interrupt. |
| 6 | GND | Analog/digital ground reference; must connect to large PCB ground plane; EP tied to same node. |
| 7 | RESET | Active-low push-pull reset output; drives µP reset pin directly; VOL ≤0.3V at 100µA sink. |
| 8 | OUT | 1.2V regulated LDO output; requires 10µF low-ESR capacitor to GND for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Battery freshness seal | Internally disconnects BATT from OUT until VCC powers up for first time; preserves shelf life of backup battery. |
| Debounced manual-reset input | MR accepts direct switch-to-GND connection; no external RC debounce required due to built-in 100ns glitch immunity. |
| Power-fail comparator | Monitors auxiliary voltage down to 0.6V with 30mV hysteresis; powered from OUT, independent of VCC status. |
| Low-dropout regulation | 150mV dropout at 50mA load ensures regulation even as VCC sags to 1.35V (1.2V + 150mV). |
| UL® certification | Complies with IEC 60950-1 safety standard; validated for use in end-equipment requiring regulatory approval. |
Applications
| Industrial Control PLCs | GPS Tracking Modules |
|---|---|
|
Use Scenario: Maintaining volatile SRAM contents during AC mains interruption or vehicle ignition cycling. IC Role / Device Role / Timing Role: Provides uninterrupted 1.2V bias to static RAM and real-time clock while supervising main supply integrity. Use Value: Prevents loss of calibration data, position logs, or firmware state without requiring external backup switching circuitry. |
Use Scenario: Preserving satellite almanac, last-known position, and time-of-week data during battery swap or deep discharge. IC Role / Device Role / Timing Role: Acts as autonomous power manager-switches to coin cell when VCC drops below 1.575V and asserts reset to halt GPS baseband processor. Use Value: Enables cold-start acquisition in <15 seconds by retaining critical navigation parameters across power cycles. |
| Point-of-Sale Terminals | Set-Top Box EEPROM Backup |
|
Use Scenario: Safeguarding transaction logs and encryption keys during unexpected power loss during credit card swipe or PIN entry. IC Role / Device Role / Timing Role: Supplies regulated 1.2V to secure memory and generates synchronized reset to halt MCU before voltage collapse. Use Value: Eliminates risk of corrupted financial records or cryptographic key exposure due to partial write operations. |
Use Scenario: Backing up channel lineup, parental controls, and firmware patch metadata during AC outage or firmware update rollback. IC Role / Device Role / Timing Role: Powers 1.2V EEPROM interface and asserts reset to freeze microcontroller execution during brownout. Use Value: Guarantees EEPROM write completion or safe abort before VCC falls below retention threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery-backup supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16024LTBV12+T | Same 1.2V output and 1.575V reset threshold, but adds CEIN/CEOUT gating and BATT ON indicator; 10-pin TDFN. | Required where chip-enable signal blocking during reset is needed to prevent SRAM corruption in high-speed µP systems. | Select MAX16024LTBV12+T only if CE gating or battery-status signaling is mandatory; otherwise MAX16023LTAV12+ offers smaller footprint and lower cost. |
| TPS3808G12DBVR | Single-function 1.2V supervisor (no LDO, no battery switchover); 360ms reset timeout; SOT-23-5 package. | Only suitable when external 1.2V LDO and battery diode-OR circuit are already present; lacks integrated power path management. | Choose TPS3808G12DBVR only in space-constrained designs where discrete LDO + switchover is acceptable and longer reset timeout is tolerable. |
Compared with MAX16024LTBV12+T, the MAX16023LTAV12+ saves board area and BOM count by omitting CE gating-ideal for cost-sensitive, non-high-speed SRAM backup. Versus TPS3808G12DBVR, it eliminates two external components (LDO + OR-ing diode/FET) and provides true seamless switchover with sub-µA battery drain.
Availability
MAX16023LTAV12+ is available at Aetrix Electronics and suitable for industrial control PLCs, GPS tracking modules, point-of-sale terminals, and set-top box EEPROM backup requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX16023LTAV12+ 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, communications, and computing applications.
The MAX16023/MAX16024 product line was designed specifically for low-power, space-constrained memory backup systems-integrating LDO regulation, reset supervision, and battery switchover into a single 8-/10-pin package to replace multi-component discrete solutions.
FAQ
What is the reset timeout period of the MAX16023LTAV12+?
The MAX16023LTAV12+ guarantees a minimum reset timeout period of 145ms after VCC rises above its 1.575V (typ) reset threshold. This duration ensures reliable microprocessor initialization and prevents premature release from reset during marginal supply recovery. The actual timeout ranges from 145ms to 285ms across temperature and process variation, as specified in the Electrical Characteristics table.
Does the MAX16023LTAV12+ support adjustable output voltage?
No, the MAX16023LTAV12+ provides only a factory-trimmed fixed 1.2V output. Adjustable output voltage (1.8V–5.25V) is exclusive to the MAX16024 family, which includes the SET pin for external resistor-divider programming. The MAX16023LTAV12+ lacks the SET pin and internal reference circuitry required for voltage adjustment.
Can the MAX16023LTAV12+ be used without a backup battery?
Yes-the MAX16023LTAV12+ functions as a standalone 1.2V LDO and reset supervisor even with BATT grounded. In this configuration, it regulates VCC to 1.2V and asserts RESET during undervoltage events, but battery switchover and battery-on indication are disabled. The device remains fully operational for primary-supply monitoring and regulation.
What is the purpose of the PFI and PFO pins on the MAX16023LTAV12+?
The PFI (Power-Fail Input) and PFO (Power-Fail Output) pins on the MAX16023LTAV12+ implement an independent undervoltage monitor. PFI senses an external voltage via a resistive divider and compares it to a 0.590V internal reference; PFO asserts low when that voltage falls below threshold. This allows early warning of auxiliary supply failure-e.g., monitoring a 5V rail before LDO input-without affecting the main reset function.
Is the MAX16023LTAV12+ RoHS-compliant and lead-free?
Yes, the MAX16023LTAV12+ carries the '+' suffix per Maxim's ordering nomenclature, indicating a lead-free/RoHS-compliant package. It uses matte tin plating on its 8-pin TDFN-EP leads and conforms to JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), enabling standard reflow assembly without special handling.
MAX16023LTAV12+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- 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-EP (3x3)
MAX16023LTAV12+ FAQ
1.How can I place an order for MAX16023LTAV12+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16023LTAV12+ 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 MAX16023LTAV12+ reliable?
The price and inventory of MAX16023LTAV12+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16023LTAV12+ is usually 5 days.
3.What payment methods are accepted for MAX16023LTAV12+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16023LTAV12+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16023LTAV12+?
MAX16023LTAV12+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16023LTAV12+ 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 MAX16023LTAV12+?
For technical support, including MAX16023LTAV12+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16023LTAV12+ requirements.
6.How does Aetrix verify that MAX16023LTAV12+ is sourced from the original manufacturer or authorized distributors?
All MAX16023LTAV12+ 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 MAX16023LTAV12+ meets industry standards.
7.What is the process for return or replacement of MAX16023LTAV12+?
All MAX16023LTAV12+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16023LTAV12+, 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 MAX16023LTAV12+ part is unused and in its original packaging.
Return procedure for MAX16023LTAV12+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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