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Analog Devices Inc./Maxim Integrated MAX16024LTBS+
- Part No.:
- MAX16024LTBS+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16024LTBS+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,330
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Product details
Overview
MAX16024LTBS+ from Maxim Integrated is a low-power battery-backup circuit with regulated output, integrating a 100mA LDO, µP reset supervisor, battery switchover logic, battery-on indicator, and chip-enable gating. It delivers a fixed 2.5V output (±2.7% accuracy), operates from 1.53V to 5.5V input, and supports backup power handover during brownout for SRAM/RTC retention.
For engineers reviewing the MAX16024LTBS+ datasheet, MAX16024LTBS+ pinout, MAX16024LTBS+ application, or MAX16024LTBS+ equivalent, this page provides verified technical context, pin-level design meaning, real-world use cases in industrial controls and GPS systems, and validated alternative options for memory backup power management.
Technical Context
The MAX16024LTBS+ implements a dual-supply LDO architecture that automatically switches regulation from VCC to BATT when VCC falls below the 2.93V reset threshold, VCC < VBATT, and dropout occurs-except for 1.2V versions. Its internal battery freshness seal isolates BATT until first VCC power-up, preserving battery life.
It features integrated CE signal gating with 1.5ns propagation delay (CEIN→CEOUT), active-high BATT ON output signaling backup mode, and push-pull RESET with 145ms minimum timeout. All functions are fully specified across –40°C to +85°C in a 10-pin TDFN-EP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulated Output Voltage | Fixed 2.5V ±2.7% (2.368V–2.634V) at 1mA load; enables direct powering of 2.5V SRAM without external feedback. |
| Max Output Current | 100mA continuous; sufficient to back up typical 32KB–1MB CMOS SRAM with margin for leakage and transient loads. |
| Input Voltage Range | 1.53V to 5.5V on VCC/BATT; supports single-cell Li-ion, coin cells, and wide-input industrial rails. |
| Supply Current (VCC) | 17µA typical at VCC = 3.0V, IOUT = 20mA; ultra-low quiescent current extends battery life in always-on backup mode. |
| Battery Mode Current | 3.5µA to 5.26µA (IBATT) with VBATT = 3V, no load; ensures >10-year coin-cell lifetime for RTC/SRAM backup. |
| Reset Threshold | 2.93V (typ), 2.845V–3.080V min/max; precisely matches 3.0V system rails for reliable brownout detection. |
| Dropout Voltage | 150mV at 50mA load (VOUT = 2.5V); allows operation down to VCC = 2.65V before switchover, minimizing voltage headroom loss. |
Pinout & Package
MAX16024LTBS+ is housed in a 10-pin 3mm × 3mm TDFN-EP package with exposed pad (internally connected to GND) for thermal dissipation. Pin 1 is top-left corner (marking dot adjacent), pin count proceeds counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Primary ground reference; connects to exposed pad; must tie to large PCB ground plane for thermal and noise control. |
| 2 | OUT | 2.5V regulated LDO output; requires 10µF low-ESR capacitor to GND for stability and transient response. |
| 3 | RESET | Active-low push-pull reset output; asserts when VCC < 2.93V or MR pulled low; holds for ≥145ms after recovery. |
| 4 | CEOUT | Active-low chip-enable output; gated by CEIN and RESET; prevents erroneous RAM writes during brownout. |
| 5 | BATT | Backup battery input; isolated by freshness seal until first VCC power-up; powers OUT during VCC dropout. |
| 6 | CEIN | Chip-enable input; drives CEOUT pass gate; connect to GND or OUT if unused; low impedance required. |
| 7 | VCC | Main supply input; powers internal circuitry and LDO; bypass with 0.1µF ceramic capacitor close to pin. |
| 8 | MR | Active-low manual reset input; internally pulled up to VCC (30kΩ); debounced internally; no external RC needed. |
| 9 | BATT ON | Active-high battery-on indicator; goes high only when regulator is powered from BATT (not VCC). |
| 10 | SET | Output voltage setting input; tied to GND for fixed 2.5V operation; unused in MAX16024LTBS+ configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Battery freshness seal | Prevents BATT discharge until first VCC power-up, ensuring full battery capacity at product deployment. |
| Chip-enable gating with 1.5ns delay | Enables safe CE signal routing for high-speed µPs/DSPs while blocking spurious writes during reset assertion. |
| Integrated BATT ON indicator | Provides direct hardware status signal for battery-backup mode-no software polling or external comparator needed. |
| Push-pull RESET with 145ms timeout | Guarantees µP reset duration exceeds boot ROM requirements for reliable initialization after brownout recovery. |
| UL® certified (IEC 60950-1) | Meets safety standards for end-equipment certification-reduces compliance burden in industrial and medical designs. |
Applications
| SRAM Backup Power | Real-Time Clock (RTC) Supply |
|---|---|
|
Use Scenario: Maintaining data integrity in static RAM during main power interruption in point-of-sale terminals. IC Role / Device Role / Timing Role: Provides regulated 2.5V backup power and automatic switchover; asserts RESET to halt CPU before voltage collapse. Use Value: Eliminates need for external diode-OR, LDO, and supervisor ICs-reducing BOM count by ≥3 components and PCB area by >25mm². |
Use Scenario: Sustaining timekeeping in GPS modules during vehicle ignition cycling or battery replacement. IC Role / Device Role / Timing Role: Supplies stable 2.5V to RTC oscillator and registers; BATT ON signal triggers firmware logging of power-loss events. Use Value: Achieves <5µA total backup current, enabling CR2032 coin cell to support >12 years of RTC operation without refresh. |
| Industrial Control Panel | Portable Medical Monitor |
|
Use Scenario: Preserving configuration settings and alarm history in PLC HMI panels exposed to 24VDC rail fluctuations. IC Role / Device Role / Timing Role: Monitors VCC with 2.93V reset threshold; gates CE signals to prevent corrupted EEPROM writes during brownout. Use Value: Prevents field failures caused by partial writes-eliminating requirement for software CRC rollback and redundant storage. |
Use Scenario: Ensuring uninterrupted vital-sign logging in handheld ECG devices during battery swap or low-battery alerts. IC Role / Device Role / Timing Role: Delivers clean 2.5V to analog front-end and memory; RESET synchronizes firmware state save before shutdown. Use Value: Meets IEC 62304 Class C software safety requirements via hardware-enforced deterministic reset timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery-backup supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16024LTBR25+T | Same 10-pin TDFN, 2.5V output, but 2.63V reset threshold (vs. 2.93V); 150mA output current rating. | Suitable where earlier reset assertion is needed-e.g., systems with tighter VCC tolerance or higher dropout risk. | Select when system brownout detection must trigger before VCC reaches 2.9V; verify CE gating timing remains compatible. |
| MAX16023LTAS25+T | 8-pin TDFN variant; identical 2.5V output and 2.93V reset; lacks CEIN/CEOUT and BATT ON pins; no chip-enable gating. | Applicable in space-constrained designs where CE protection is unnecessary and BATT status monitoring is handled externally. | Choose for cost-sensitive, minimal-feature implementations-saves ~$0.15/unit but forfeits hardware-level write protection. |
Compared with MAX16024LTBS+, MAX16024LTBR25+T offers earlier reset assertion for tighter supply margins, while MAX16023LTAS25+T reduces footprint and cost by omitting CE gating and BATT ON-making it suitable only where those functions are implemented elsewhere.
Availability
MAX16024LTBS+ is available at Aetrix Electronics and suitable for industrial controls, GPS systems, and portable medical equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX16024LTBS+ 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX16023/MAX16024 family was designed specifically for low-power, high-reliability memory backup in mission-critical systems-integrating LDO regulation, supervision, and battery-handling logic into a single compact package.
FAQ
What is the exact output voltage tolerance of MAX16024LTBS+ under load?
The MAX16024LTBS+ delivers a nominal 2.5V output with ±2.7% accuracy (2.368V to 2.634V) at 1mA load and across –40°C to +85°C. Load regulation adds ≤1.0% deviation from 1mA to 2mA, and line regulation contributes ≤1.0%/V over VCC = VOUT + 1V to VOUT + 2V. These values are guaranteed in production test.
Does MAX16024LTBS+ require external components for basic operation?
Yes-MAX16024LTBS+ requires three mandatory capacitors: 0.1µF ceramic on VCC-to-GND, 0.1µF ceramic on BATT-to-GND, and 10µF low-ESR on OUT-to-GND. No external resistors or diodes are needed for core battery switchover, reset, or CE gating functions.
How does the battery freshness seal function in MAX16024LTBS+?
The battery freshness seal in MAX16024LTBS+ disconnects BATT from internal circuitry until VCC is first applied and rises above threshold. This prevents initial battery discharge during storage or assembly. Once latched, BATT powers OUT whenever VCC drops below operating range-ensuring full capacity at first use.
Can MAX16024LTBS+ be used without a backup battery?
Yes-MAX16024LTBS+ operates normally with BATT connected to GND. In this configuration, it functions as a 2.5V LDO with reset supervision and CE gating, but loses battery-backup capability. The BATT ON output remains low, and switchover logic is disabled.
What is the propagation delay and drive strength of CEOUT in MAX16024LTBS+?
MAX16024LTBS+ provides 1.5ns typical propagation delay from CEIN to CEOUT under 50Ω source and 50pF load conditions. CEOUT drives up to 3.2mA sink current at 0.3V drop (VOUT = 2.5V), supporting direct interface with standard CMOS inputs without level-shifting.
MAX16024LTBS+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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)
MAX16024LTBS+ FAQ
1.How can I place an order for MAX16024LTBS+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16024LTBS+ 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 MAX16024LTBS+ reliable?
The price and inventory of MAX16024LTBS+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16024LTBS+ is usually 5 days.
3.What payment methods are accepted for MAX16024LTBS+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16024LTBS+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16024LTBS+?
MAX16024LTBS+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16024LTBS+ 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 MAX16024LTBS+?
For technical support, including MAX16024LTBS+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16024LTBS+ requirements.
6.How does Aetrix verify that MAX16024LTBS+ is sourced from the original manufacturer or authorized distributors?
All MAX16024LTBS+ 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 MAX16024LTBS+ meets industry standards.
7.What is the process for return or replacement of MAX16024LTBS+?
All MAX16024LTBS+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16024LTBS+, 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 MAX16024LTBS+ part is unused and in its original packaging.
Return procedure for MAX16024LTBS+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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