My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6367LKA29+T
- Part No.:
- MAX6367LKA29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6367LKA29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,855
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6367LKA29+T from Maxim Integrated is a low-power microprocessor supervisory circuit with battery-backup control and chip-enable gating, featuring a factory-preset 2.93V reset threshold, 150ms minimum reset timeout, and BATT ON push-pull output indicator for battery-switchover status. It operates from 1.2V to 5.5V supply, delivers <10µA quiescent current, and supports CMOS RAM backup in portable equipment during brownout.
For engineers reviewing the MAX6367LKA29+T datasheet, MAX6367LKA29+T pinout, MAX6367LKA29+T application, or MAX6367LKA29+T equivalent, key selection criteria include its BATT ON output function, 2.93V precision reset threshold, SOT23-8 package compatibility, and guaranteed RESET/RESET operation down to 1.2V supply voltage.
Technical Context
The MAX6367LKA29+T implements a dedicated battery-on indicator (BATT ON) that asserts high only when VCC falls below the 2.93V reset threshold *and* VBATT exceeds VCC by ≥20mV - confirming true battery-backup mode. Its internal MOSFET switchover path connects BATT to OUT with ≤4.6Ω on-resistance at 2.38V VCC and 25mA load.
Unlike MAX6365/MAX6366 variants, it omits manual reset input and watchdog timer, instead integrating a push-pull BATT ON output capable of sinking 3.2mA at 0.4V saturation while sourcing ~10µA from OUT in backup mode. Chip-enable gating remains active with 1.5ns propagation delay and 20–100Ω on-resistance between CE IN and CE OUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.85V to 3.00V (factory preset 2.93V); ensures reliable reset assertion before 3.3V system brownout. |
| Reset Timeout Period | 150ms minimum; guarantees µP initialization completes before release from reset. | Supply Voltage Range | 1.2V to 5.5V; enables operation across single-cell Li-ion, 3.3V, and 5V logic rails. |
| Quiescent Current | 10µA typical (VCC = 5.5V); minimizes standby power in battery-critical applications. |
| BATT ON Output Type | Push-pull active-high; drives LEDs or external pass transistors without pull-up resistors. |
| VCC-to-OUT On-Resistance | 4.6Ω max at 2.38V/25mA; limits voltage drop and heat during main-supply operation. |
| CE IN to CE OUT Delay | 1.5ns; preserves timing integrity for high-speed µP address/data gating. |
Pinout & Package
MAX6367LKA29+T is housed in an 8-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), compatible with standard reflow profiles and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-high open-drain reset output | Asserts high during VCC brownout or failure; requires external pull-down for logic-low default state. |
| 2 CE IN | Chip-enable input | Controls gating of CE signal to SRAM; low disables write access during power faults. |
| 3 GND | Ground reference | Common return for all analog/digital functions; must be low-impedance connection. |
| 4 BATT ON | Battery-on status indicator | Push-pull high output confirms valid battery-backup mode; sinks 3.2mA at 0.4V. |
| 5 RESET IN | Not connected / unused | This pin is unassigned on MAX6367; tied internally to avoid floating node. |
| 6 VCC | Main supply input | Accepts 1.2V–5.5V; powers device and supplies OUT during normal operation. |
| 7 OUT | Switched output rail | Connects to VCC or BATT based on switchover logic; sources up to 150mA from VCC. |
| 8 BATT | Backup battery input | Accepts 2.0V–5.5V; activates switchover when VBATT > VCC + 20mV and VCC < 2.93V. |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated push-pull BATT ON pin signals valid battery-backup mode without external logic or pull-ups. |
| Precision Reset Threshold | 2.93V ±70mV over -40°C to +85°C; matches 3.3V system tolerance for deterministic brownout response. |
| Ultra-Low Quiescent Current | 10µA max at 5.5V; extends battery life in always-on portable devices during extended backup periods. |
| Chip-Enable Gating | 1.5ns propagation delay with 20–100Ω on-resistance; prevents SRAM corruption during power transitions. |
| Power-Supply Transient Immunity | Withstands 100mV VCC glitches up to 30µs duration without false reset assertion. |
Applications
| Portable Medical Monitors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG monitor retains real-time waveform data during AC power loss. IC Role / Device Role / Timing Role: Supervisory IC asserts BATT ON to enable backup power path and gates CE to freeze SRAM writes until stable supply returns. Use Value: Prevents data loss and ensures deterministic restart after brownout using 2.93V threshold aligned with 3.3V analog front-end rails. | Use Scenario: Remote environmental sensor node logs temperature/humidity to nonvolatile memory during grid outage. IC Role / Device Role / Timing Role: MAX6367LKA29+T switches SRAM supply from VCC to BATT and holds CE inactive to block corrupted writes during voltage sag. Use Value: 10µA backup current extends 200mAh coin cell life to >2 years in sleep mode; BATT ON output triggers local alarm LED. |
| Point-of-Sale Terminals | Set-Top Box Firmware Storage |
Use Scenario: Retail terminal preserves transaction buffer in SRAM during brief UPS switchover or capacitor hold-up. IC Role / Device Role / Timing Role: Monitors 3.3V rail; asserts reset and BATT ON within 20µs of VCC falling below 2.93V to isolate memory subsystem. Use Value: 150ms reset timeout ensures ARM Cortex-M4 completes safe shutdown sequence before power collapse. | Use Scenario: Consumer STB retains channel lineup and parental lock settings during nightly power cycling. IC Role / Device Role / Timing Role: Provides battery-backed SRAM power and CE gating during 5V standby rail dropout, signaled via BATT ON to firmware. Use Value: Push-pull BATT ON output directly drives microcontroller GPIO for autonomous backup-mode software handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6367PKA29+T | Same 2.93V reset threshold and BATT ON function, but uses open-drain RESET output instead of open-drain active-high RESET. | Suitable where active-low reset signaling is required by host µP; lacks push-pull BATT ON drive strength. | Select MAX6367PKA29+T only if system design mandates active-low reset polarity and can tolerate weaker BATT ON sink capability. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no BATT ON output, no chip-enable gating, 2.5µA quiescent current. | Applicable for basic reset-only functions in 3.3V systems; cannot replace battery-switchover or memory protection features. | Choose TPS3808G33DBVR only for cost-sensitive designs omitting backup power management and CE control. |
Compared with MAX6367LKA29+T, MAX6367PKA29+T offers identical supervision and switchover logic but differs in RESET polarity and BATT ON drive strength, while TPS3808G33DBVR provides lower quiescent current but lacks battery-backup coordination and chip-enable gating entirely.
Availability
MAX6367LKA29+T is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, and point-of-sale terminals requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6367LKA29+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, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX6365–MAX6368 product line delivers integrated µP supervision with battery backup, chip-enable gating, and variant-specific functions (BATT ON, watchdog, manual reset) for space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6367LKA29+T?
The MAX6367LKA29+T has a factory-trimmed reset threshold of 2.93V, with guaranteed minimum and maximum values of 2.85V and 3.00V respectively across -40°C to +85°C. This threshold is laser-trimmed during production and applies to VCC monitoring only; it does not affect BATT ON activation, which depends on both VCC < VTH and VBATT > VCC + 20mV. The MAX6367LKA29+T maintains this accuracy without external components.
Does the MAX6367LKA29+T provide manual reset capability?
No, the MAX6367LKA29+T does not include a manual reset input (MR). That function is exclusive to the MAX6365 family. The MAX6367LKA29+T is specifically configured with the BATT ON output feature and omits MR, WDI, and RESET IN pins. Pin 5 (RESET IN) is unconnected internally. For manual reset functionality, engineers must select MAX6365LKA29+T or MAX6368LKA29+T instead.
How does the BATT ON output behave during power transitions?
The BATT ON output of the MAX6367LKA29+T goes high only when two conditions are simultaneously met: VCC falls below the 2.93V reset threshold *and* VBATT exceeds VCC by at least 20mV. It remains high throughout battery-backup mode and returns low within 12µs after VCC rises above VTH and exceeds VBATT by 20mV. The MAX6367LKA29+T guarantees this behavior across temperature and supply variations without external timing components.
Can the MAX6367LKA29+T operate with a 1.8V main supply?
Yes, the MAX6367LKA29+T operates with VCC as low as 1.2V, so it fully supports 1.8V systems. However, its 2.93V reset threshold means it will assert reset continuously when powered from 1.8V - making it unsuitable for direct supervision of 1.8V rails. It can still function as a battery-backup supervisor for 3.3V or 5V subsystems within a 1.8V-based system, provided VCC is derived from a higher-voltage source. The MAX6367LKA29+T's RESET and BATT ON outputs remain valid down to 1.2V supply.
What is the maximum load the BATT ON output can drive?
The BATT ON output of the MAX6367LKA29+T is a push-pull driver rated for 3.2mA sink current at 0.4V saturation voltage. It can directly drive LEDs, optocouplers, or base/gate inputs of external pass transistors. Source capability is limited to ~10µA from OUT in battery-backup mode. For loads exceeding 3.2mA, an external transistor buffer is required. The MAX6367LKA29+T does not specify short-circuit current limiting on BATT ON, so external current limiting is recommended for sustained heavy loads.
MAX6367LKA29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6367LKA29+T FAQ
1.How can I place an order for MAX6367LKA29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6367LKA29+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 MAX6367LKA29+T reliable?
The price and inventory of MAX6367LKA29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6367LKA29+T is usually 5 days.
3.What payment methods are accepted for MAX6367LKA29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6367LKA29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6367LKA29+T?
MAX6367LKA29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6367LKA29+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 MAX6367LKA29+T?
For technical support, including MAX6367LKA29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6367LKA29+T requirements.
6.How does Aetrix verify that MAX6367LKA29+T is sourced from the original manufacturer or authorized distributors?
All MAX6367LKA29+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 MAX6367LKA29+T meets industry standards.
7.What is the process for return or replacement of MAX6367LKA29+T?
All MAX6367LKA29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6367LKA29+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 MAX6367LKA29+T part is unused and in its original packaging.
Return procedure for MAX6367LKA29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6367LKA29+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
