My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX667ESA+
- Part No.:
- MAX667ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX667ESA+.pdf
- Description:
- IC REG LIN POS ADJ 250MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:409
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX667ESA+ from Maxim Integrated is a low-dropout, positive linear voltage regulator delivering up to 250mA output current with typical dropout of 150mV at 200mA load. It features Dual Mode™ operation (fixed +5V or adjustable 1.3V–16V output), integrated low-battery detector (LBO/LBI), dropout detector (DD), and shutdown control (SHDN). It is widely used in battery-powered portable instruments and solar-powered devices requiring micropower regulation and early power-failure warning.
For engineers reviewing the MAX667ESA+ datasheet, MAX667ESA+ pinout, MAX667ESA+ application, or MAX667ESA+ equivalent, key selection considerations include its -40°C to +85°C operating range, 8-pin SO package, 20µA typical quiescent current in normal mode, 0.2µA in shutdown, and dual-mode output configuration supporting both minimal-component fixed-5V and precision-adjustable designs.
Technical Context
The MAX667ESA+ employs a PNP pass transistor architecture with a trimmed 1.225V internal bandgap reference and error amplifier feedback path selectable between on-chip resistors (for +5V) or external SET-pin divider (for programmable output). Its Dual Mode™ logic switches feedback based on SET voltage threshold (>50mV above GND).
It integrates three independent comparator-based monitoring functions: LBI/LBO for low-battery detection referenced to 1.225V, DD as an open-collector PNP output that sources current when VIN–VOUT falls below ~300mV, and SHDN with CMOS-compatible threshold (VIH ≥ 1.5V) enabling sub-1µA shutdown quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 250mA maximum - supports moderate-power microcontrollers and analog sensors without external boost. |
| Dropout Voltage | 150mV typical at 200mA - enables >95% usable battery voltage in single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 20µA typical (normal), 0.2µA typical (shutdown) - extends shelf life and runtime in always-on battery applications. |
| Input Voltage Range | +3.5V to +16.5V - accommodates wide input sources including unregulated wall adapters and stacked batteries. |
| Output Voltage Options | Fixed +5V (SET = GND) or adjustable 1.3V–16V (via external R-divider on SET) - eliminates need for separate regulators across product variants. |
| Low-Battery Threshold | 1.225V ±25mV reference - allows precise end-of-life detection using simple resistor dividers on LBI pin. |
| Shutdown Threshold | 1.5V VIH - ensures reliable disable with standard logic-level GPIOs without level-shifting. |
Pinout & Package
MAX667ESA+ is housed in an 8-pin SO (Small Outline) package, rated for -40°C to +85°C operation, with gull-wing leads and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - DD | Dropout Detector Output | Open-collector PNP output sourcing current when VIN–VOUT drops near dropout limit - provides early warning before regulation loss. |
| 2 - OUT | Regulated Output | Main power rail; requires ≥10µF output capacitor for stability; voltage set by internal divider (5V) or external SET divider. |
| 3 - LBI | Low-Battery Input | CMOS input to 1.225V comparator; accepts resistor divider to set custom battery threshold (e.g., 5.5V via 8.2MΩ/2.4MΩ). |
| 4 - GND | Ground Reference | Analog and power ground return for regulator core, comparators, and error amplifier - must be low-impedance. |
| 5 - SHDN | Shutdown Control | Active-high enable; pulls high (>1.5V) to disable OUT, LBO, DD and reduce IQ to <1µA - compatible with MCU GPIOs. |
| 6 - SET | Voltage Set Input | Selects regulation mode: grounded → fixed 5V; >50mV → external divider sets VOUT = 1.225V × (R1+R2)/R1. |
| 7 - LBO | Low-Battery Output | Open-drain N-channel output sinking current when LBI < 1.225V - drives LEDs or interrupts with external pull-up to OUT. |
| 8 - IN | Unregulated Input | Raw supply input; must stay within +3.5V to +16.5V; internal protection limits short-circuit duration to 1 second. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ Output Configuration | Single IC supports both fixed +5V (zero external parts) and precision-adjustable outputs (1.3V–16V), reducing BOM count across product families. |
| Integrated Low-Battery Detection | LBI/LBO circuitry with 1.225V reference enables accurate, externally scalable battery monitoring without adding comparators or references. |
| Dropout Warning Output (DD) | Provides analog signal proportional to proximity to dropout - allows predictive system shutdown or display alerts before brownout. |
| Micropower Shutdown | 0.2µA typical IQ in shutdown mode preserves battery charge during storage or sleep states in portable instrumentation. |
| Stable with Standard Capacitors | Guaranteed stability with 10µF aluminum electrolytic or tantalum capacitors - no special low-ESR requirements simplify design and cost. |
Applications
| Battery-Powered Portable Instruments | Solar-Powered Remote Sensors |
|---|---|
Use Scenario: Handheld multimeters and data loggers powered by AA/AAA alkaline batteries with variable discharge profiles. IC Role / Device Role / Timing Role: Primary 5V power rail regulator with integrated low-battery alert and dropout warning to prevent data corruption during voltage sag. Use Value: 20µA quiescent current extends battery life beyond 1 year; DD output triggers firmware-initiated save-and-shutdown before regulation loss. |
Use Scenario: Environmental monitoring nodes deployed in remote locations, powered by small photovoltaic panels and rechargeable LiFePO₄ cells. IC Role / Device Role / Timing Role: Micropower voltage regulator maintaining stable 3.3V or 5V for MCU and sensor interface, with LBI configured for 3.0V cutoff to protect battery longevity. Use Value: Adjustable output allows optimal rail matching to sensor/MCU requirements; 0.2µA shutdown current prevents overnight drain during low-light conditions. |
| Pagers and Radio Control Receivers | Low-Power Industrial Telemetry |
Use Scenario: Compact RF receivers requiring clean, low-noise 5V supply with fast wake-from-sleep response and battery status indication. IC Role / Device Role / Timing Role: Regulator and system supervisor - SHDN controlled by baseband processor; LBO signals low battery to host MCU via interrupt line. Use Value: 150mV dropout maximizes usable battery voltage; 1.5V SHDN threshold ensures compatibility with 3.3V I/O domains without level shifters. |
Use Scenario: Wireless sensor transmitters in industrial settings where long-term reliability and temperature resilience (-40°C to +85°C) are critical. IC Role / Device Role / Timing Role: Main power conditioner for ultra-low-power MCUs and RF transceivers, leveraging DD output to initiate graceful transmission pause before brownout. Use Value: SO package meets IPC Class 2 reliability standards; guaranteed performance over full industrial temperature range eliminates derating concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX666ESA+ | Lower max output current (150mA), higher dropout (250mV typ @ 100mA), no DD output, same pinout and temperature grade. | Suitable only for lower-current, non-predictive systems lacking dropout warning requirement. | Choose MAX666ESA+ only if 150mA suffices and DD functionality is unnecessary - not a drop-in replacement for MAX667ESA+ in 250mA or predictive-alert designs. |
| TPS76350DBVR | Fixed 5V output only, 150mA max, 120mV dropout @ 100mA, no LBI/LBO or DD, 5-pin SOT-23 package. | Targeted at space-constrained, low-cost applications without supervision features or high-current demand. | Select TPS76350DBVR for compact, cost-sensitive designs needing only basic 5V regulation - incompatible pinout and missing supervision functions preclude direct substitution. |
Compared with MAX666ESA+, the MAX667ESA+ delivers 67% higher output current and adds critical system-monitoring features (DD, LBO); versus TPS76350DBVR, it offers triple the current, industrial temperature range, and comprehensive power-supervision capability - making it uniquely suited for robust, feature-rich portable instrumentation.
Availability
MAX667ESA+ is available at Aetrix Electronics and suitable for battery-powered portable instruments, solar-powered remote sensors, pagers and radio control receivers, low-power industrial telemetry, and handheld test equipment requiring stable component supply across extended temperature ranges.
Supply support for MAX667ESA+ 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, automotive, and communications markets.
The MAX667 belongs to Maxim's micropower linear regulator product line, designed specifically for battery-critical applications demanding ultra-low quiescent current, accurate voltage supervision, and predictable end-of-life behavior in portable and remote systems.
FAQ
What is the operating temperature range of the MAX667ESA+?
The MAX667ESA+ is specified for operation from -40°C to +85°C. This industrial-grade temperature range is validated per the device's datasheet and ensures reliable performance in outdoor instrumentation, automotive accessories, and factory-floor telemetry where ambient conditions vary significantly. The "ESA" suffix explicitly denotes this extended temperature grade, distinguishing it from commercial-grade variants like MAX667CSA.
How does the Dual Mode™ operation work on the MAX667ESA+?
Dual Mode™ operation on the MAX667ESA+ is controlled by the SET pin voltage. When SET is grounded, the device uses internal feedback resistors to regulate a fixed +5V output. When SET is biased above 50mV (e.g., via external resistor divider from OUT), the error amplifier switches to the SET node, allowing output voltage adjustment from 1.3V to 16V using VOUT = 1.225V × (R1 + R2)/R1. This eliminates need for separate fixed and adjustable regulators.
Can the MAX667ESA+ be used with a 3.7V Li-ion battery?
Yes, the MAX667ESA+ can regulate from a 3.7V Li-ion battery down to its end-of-discharge voltage (~3.0V), provided the required output voltage is ≤3.0V minus dropout. For a 3.3V output, minimum input is ~3.45V (150mV dropout), so usable range is ~3.45V–4.2V. To extend runtime, configure LBI for 3.2V detection and use DD output to trigger early system response before regulation fails.
What is the purpose of the DD pin on the MAX667ESA+?
The DD (Dropout Detector) pin on the MAX667ESA+ is an open-collector PNP output that begins sourcing current when VIN–VOUT falls below ~300mV. Unlike a digital flag, DD provides analog warning - its output current increases sharply near dropout, enabling predictive monitoring via resistor-to-ground conversion or comparator thresholding. This allows systems to save state or reduce load before brownout occurs.
Does the MAX667ESA+ require an external capacitor on the SET pin?
No, the MAX667ESA+ does not require an external capacitor on the SET pin. The SET input has extremely low bias current (≤10nA), so high-value resistors (e.g., 1MΩ) can be used without accuracy loss. However, board leakage must be minimized when using >1MΩ resistors - no capacitor is specified or needed for stability or filtering in the official MAX667ESA+ application circuits.
MAX667ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16.5V
- Voltage - Output (Min/Fixed):
- 1.3V (5V)
- Voltage - Output (Max):
- 16V
- Voltage Dropout (Max):
- 0.35V @ 200mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- 20 mA
- PSRR:
- -
- Control Features:
- Dropout Detector, Enable, Low Battery Detection
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX667ESA+ FAQ
1.How can I place an order for MAX667ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX667ESA+ 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 MAX667ESA+ reliable?
The price and inventory of MAX667ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX667ESA+ is usually 5 days.
3.What payment methods are accepted for MAX667ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX667ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX667ESA+?
MAX667ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX667ESA+ 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 MAX667ESA+?
For technical support, including MAX667ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX667ESA+ requirements.
6.How does Aetrix verify that MAX667ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX667ESA+ 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 MAX667ESA+ meets industry standards.
7.What is the process for return or replacement of MAX667ESA+?
All MAX667ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX667ESA+, 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 MAX667ESA+ part is unused and in its original packaging.
Return procedure for MAX667ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX667ESA+ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
