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Analog Devices Inc./Maxim Integrated MAX16024PTBS+T
- Part No.:
- MAX16024PTBS+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX16024PTBS+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,988
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Product details
Overview
MAX16024PTBS+T from Maxim Integrated is a low-power, 10-pin TDFN battery-backup circuit with integrated 100mA LDO, microprocessor reset supervisor, battery switchover, chip-enable gating (1.5ns propagation delay), and battery-on indicator. It delivers a factory-set 2.5V regulated output (±2.2% accuracy) and operates from 1.53V to 5.5V input, supporting SRAM/RTC backup in brownout conditions.
For engineers reviewing the MAX16024PTBS+T datasheet, MAX16024PTBS+T pinout, MAX16024PTBS+T application, or MAX16024PTBS+T equivalent, this page provides verified technical context, real-world timing behavior (145ms reset timeout, 20µs PFI response), package-validated pin functions, and alternatives for SRAM/RTC power management, CE signal protection, and battery-status indication.
Technical Context
The MAX16024PTBS+T integrates three core subsystems: a precision LDO regulator (2.5V ±2.2%, 100mA, 150mV dropout at 50mA), a supervisory block with push-pull RESET (145ms timeout, 2.93V threshold), and a dedicated CE gating path (CEIN→CEOUT, 1.5ns typical delay, 8–50Ω on-resistance). All operate across –40°C to +85°C.
Its battery switchover logic activates only when VCC < 2.93V, VCC < VBATT, and the LDO enters dropout - ensuring clean transition without false triggering. The BATT ON output asserts high exclusively during active battery-backup mode, while SET is internally grounded for fixed 2.5V operation (no external divider required).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulated Output Voltage | 2.5V ±2.2% (factory-trimmed; no external resistor needed) |
| Output Current Capability | 100mA continuous; supports full SRAM retention under backup |
| Reset Threshold Voltage | 2.93V (typical); triggers reset before critical brownout of host µP |
| Reset Timeout Period | 145ms minimum; ensures reliable µP initialization after power recovery |
| LDO Dropout Voltage | 150mV at 50mA load; enables operation down to VCC = 2.65V while maintaining 2.5V OUT |
| Supply Current (VCC mode) | 17µA typical at 2.5V load; minimizes main supply drain during active operation |
| Battery-Backup Supply Current | 3.5–5.26µA (VBATT = 3V, no load); preserves battery life for years in standby |
| CEIN-to-CEOUT Propagation Delay | 1.5ns typical; meets timing requirements for high-speed DSP/µP CE interfaces |
Pinout & Package
MAX16024PTBS+T is housed in a 10-pin 3mm × 3mm TDFN-EP package with exposed pad (internally connected to GND). Thermal resistance θJA = 41°C/W enables stable operation at full load in industrial ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference; EP pad must be soldered to large PCB ground plane for thermal and EMI 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; drives µP reset pin directly without pull-up; asserts for ≥145ms |
| 4 | CEOUT | Active-low chip-enable output; gated by CEIN and RESET; prevents erroneous memory writes during brownout |
| 5 | BATT | Backup battery input; isolated by freshness seal until first VCC power-up; accepts 1.53–5.5V |
| 6 | CEIN | Chip-enable input; low enables CEOUT pass-through; high disables CEOUT during reset (latched behavior) |
| 7 | VCC | Main supply input; powers all internal circuits except PFI/PFO (powered from OUT); bypass with 0.1µF |
| 8 | MR | Active-low manual reset input; debounced internally; 30kΩ pull-up to VCC; 100ns glitch immunity |
| 9 | BATT ON | Active-high battery status indicator; asserts only when regulator is powered from BATT (not VCC) |
| 10 | SET | Grounded internally for fixed 2.5V output; unused and must be connected to GND per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CE signal gating | 1.5ns CEIN→CEOUT propagation enables use with >500MHz µPs/DSPs without timing violation |
| Battery-on status flag | Dedicated BATT ON output eliminates need for external voltage monitoring or firmware polling |
| Battery freshness seal | Prevents backup battery discharge prior to first power-up, preserving shelf life up to 10 years |
| Factory-trimmed 2.5V LDO | ±2.2% output accuracy over –40°C to +85°C avoids calibration overhead in production test |
| Low-quiescent-current backup mode | 3.5–5.26µA IBATT extends coin-cell life to >10 years in RTC/SRAM applications |
| Push-pull RESET output | Drives µP reset directly with VOL ≤ 0.3V at 3.2mA sink; eliminates external pull-up resistor |
Applications
| Industrial Real-Time Clock Backup | SRAM Data Retention System |
|---|---|
Use Scenario: Maintaining accurate timekeeping in programmable logic controllers (PLCs) during AC mains failure or brownout events lasting seconds to minutes. IC Role / Device Role / Timing Role: Provides uninterrupted 2.5V power to RTC IC and asserts RESET to halt processor activity until stable VCC returns. Use Value: Guarantees time continuity and prevents clock drift or reset-induced time loss; BATT ON signal enables HMI to display "battery backup active" status. |
Use Scenario: Preserving configuration and state data in industrial HMIs during unexpected power loss, enabling instant resume on restoration. IC Role / Device Role / Timing Role: Supplies regulated 2.5V to CMOS SRAM and gates CE signals via CEIN/CEOUT to block write cycles during voltage collapse. Use Value: Eliminates need for external CE logic or FPGA-based protection; 1.5ns CE gating ensures no spurious writes occur even during fast transients. |
| GPS Module Memory Hold | Point-of-Sale Transaction Buffer |
Use Scenario: Sustaining ephemeris and almanac data in handheld GPS receivers during battery swap or vehicle ignition cycling. IC Role / Device Role / Timing Role: Powers GPS baseband SRAM from backup cell; BATT ON output triggers firmware to enter low-power tracking mode. Use Value: Reduces TTFF (Time-To-First-Fix) from >30s to <5s after power restoration; freshness seal ensures full battery capacity at first use. |
Use Scenario: Securing last transaction buffer in retail POS terminals during brief grid interruptions or UPS switchover delays. IC Role / Device Role / Timing Role: Delivers 100mA 2.5V to NV-SRAM and asserts RESET to freeze CPU execution mid-transaction until power stabilizes. Use Value: Prevents partial transaction commits or database corruption; 145ms reset timeout exceeds typical UPS hold-up time (20–100ms). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery-backup supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16023PTBS+T | No CEIN/CEOUT or BATT ON pins; lacks chip-enable gating and battery status output | Suitable only for basic reset + LDO backup; cannot protect memory writes or indicate battery mode | Select when CE gating and BATT ON are unnecessary and BOM cost reduction is prioritized |
| TPS3808G33DBVR | Standalone reset IC only (no LDO, no battery switchover, no CE gating) | Requires external LDO and battery diode-OR circuit; adds board area and component count | Choose only if system already includes discrete backup power path and only reset supervision is needed |
Compared with MAX16023PTBS+T, MAX16024PTBS+T adds hardware-enforced CE signal blocking and explicit battery-mode signaling-critical for data integrity in memory-intensive systems. Versus TPS3808G33DBVR, it integrates power path management, eliminating four external components and reducing layout risk.
Availability
MAX16024PTBS+T is available at Aetrix Electronics and suitable for industrial controls, GPS modules, point-of-sale equipment, and portable/battery-powered devices requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX16024PTBS+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 power management, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX16024PTBS+T belongs to Maxim's battery-backup supervisor family, engineered specifically to replace discrete reset + LDO + diode-OR solutions in SRAM/RTC systems where data integrity, space constraints, and battery longevity are critical.
FAQ
What is the exact output voltage and tolerance of MAX16024PTBS+T?
The MAX16024PTBS+T delivers a factory-trimmed 2.5V regulated output with ±2.2% accuracy over –40°C to +85°C (2.368V to 2.634V). This is confirmed in the Electrical Characteristics table (page 3) under "Output Voltage Accuracy" for LDO = 2.5V, IOUT = 1mA. No external resistors are required - the SET pin is internally grounded for fixed-voltage operation.
Does MAX16024PTBS+T support battery switchover without external components?
Yes. MAX16024PTBS+T performs fully autonomous battery switchover: when VCC falls below 2.93V, drops below VBATT, and the LDO enters dropout, it seamlessly transfers OUT supply from VCC to BATT. No external diodes, MOSFETs, or control logic are needed - the internal freshness seal and switchover logic handle all sequencing and isolation.
What is the function of the CEIN and CEOUT pins on MAX16024PTBS+T?
CEIN and CEOUT implement hardware-enforced chip-enable gating. During normal operation, CEIN passes directly to CEOUT. When RESET asserts, CEOUT is immediately disabled - preventing spurious memory writes during brownout. CEOUT remains latched high (if CEIN was high) or held low for 12µs (if CEIN was low), then goes high. This behavior is intrinsic to MAX16024PTBS+T and requires no firmware intervention.
How does the BATT ON output behave on MAX16024PTBS+T?
The BATT ON pin on MAX16024PTBS+T is an active-high indicator that asserts only when the device is actively sourcing OUT from the BATT pin - i.e., during true battery-backup mode. It remains low during VCC operation, reset assertion without battery engagement, or when VCC > VBATT. This provides unambiguous hardware-level status for system monitoring or user feedback.
What is the minimum reset timeout period for MAX16024PTBS+T?
The guaranteed minimum reset timeout period for MAX16024PTBS+T is 145ms after VCC rises above the 2.93V reset threshold. This value is specified in the Electrical Characteristics table (page 3) under "Reset Timeout Period" (tRP) and is valid across the full –40°C to +85°C temperature range. Typical values extend to 215ms, but design must accommodate the 145ms minimum.
MAX16024PTBS+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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:
- 10-TDFN (3x3)
MAX16024PTBS+T FAQ
1.How can I place an order for MAX16024PTBS+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16024PTBS+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 MAX16024PTBS+T reliable?
The price and inventory of MAX16024PTBS+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16024PTBS+T is usually 5 days.
3.What payment methods are accepted for MAX16024PTBS+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16024PTBS+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16024PTBS+T?
MAX16024PTBS+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16024PTBS+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 MAX16024PTBS+T?
For technical support, including MAX16024PTBS+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16024PTBS+T requirements.
6.How does Aetrix verify that MAX16024PTBS+T is sourced from the original manufacturer or authorized distributors?
All MAX16024PTBS+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 MAX16024PTBS+T meets industry standards.
7.What is the process for return or replacement of MAX16024PTBS+T?
All MAX16024PTBS+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16024PTBS+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 MAX16024PTBS+T part is unused and in its original packaging.
Return procedure for MAX16024PTBS+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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