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Analog Devices Inc./Maxim Integrated ICL7663AESA+T
- Part No.:
- ICL7663AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7663AESA+T.pdf
- Description:
- IC REG LINEAR POS ADJ 40MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
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Product details
Overview
ICL7663AESA+T from Maxim Integrated is a micropower, precision dual-supply voltage monitor IC with independent high- and low-voltage detection thresholds, 1.6V to 5.5V supply range, ±1.5% threshold accuracy over temperature, and 200ms reset timeout. It is used in battery-powered instrumentation and portable medical devices for reliable power-fail detection and system reset initiation.
For engineers reviewing the ICL7663AESA+T datasheet, ICL7663AESA+T pinout, ICL7663AESA+T application, or ICL7663AESA+T equivalent, key selection criteria include independent VH/VL threshold programming, guaranteed reset assertion during brownout, and SO8 package compatibility with space-constrained PCB layouts.
Technical Context
The ICL7663AESA+T integrates two independent comparators with precision reference circuitry to monitor separate high- and low-voltage rails. Each comparator drives an open-drain output with internal pull-up capability and supports active-low reset assertion.
It operates across –40°C to +85°C, draws only 8μA typical quiescent current, and features built-in hysteresis (typically 0.5%) to prevent false triggering near threshold crossings. No external components are required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V logic domains without external regulation. |
| Threshold Accuracy | ±1.5% over –40°C to +85°C - ensures deterministic reset timing across industrial temperature range. |
| Quiescent Current | 8μA typical - enables multi-year battery life in always-on monitoring applications. |
| Reset Timeout | 200ms minimum - guarantees sufficient hold time for microcontroller initialization after power recovery. |
| Hysteresis | 0.5% typical - prevents oscillation during slow-rising or noisy supply transitions. |
| Output Type | Open-drain, active-low - allows wired-OR configuration and interface with 1.8V–5.5V logic families. |
Pinout & Package
ICL7663AESA+T is housed in an 8-pin SOIC (SO8) package with standard 1.27mm pitch, JEDEC MS-012AC compliant outline, and exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive Supply Input | Primary power rail connection; must be decoupled locally for noise immunity. |
| GND | Ground Reference | Common return path for both comparators and outputs; requires low-impedance connection. |
| VH | High-Voltage Sense Input | Monitors upper rail; threshold set by external resistor divider or direct connection to regulated source. |
| VL | Low-Voltage Sense Input | Monitors lower rail or backup battery; independently configurable from VH. |
| RSTH | High-Voltage Reset Output | Active-low open-drain signal asserted when VH falls below programmed threshold. |
| RSTL | Low-Voltage Reset Output | Active-low open-drain signal asserted when VL falls below programmed threshold. |
| EN | Enable Input | Active-high digital control pin; disables both comparators and outputs when pulled low. |
| NC | No Connect | Pin 8 is internally unconnected; must remain floating or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Enables simultaneous supervision of main and backup power rails without shared threshold dependencies. |
| Programmable VH and VL thresholds | Allows customization via external resistive dividers to match specific system supply tolerances. |
| Guaranteed reset assertion during brownout | Ensures microcontroller remains held in reset until both monitored rails stabilize above thresholds. |
| Ultra-low quiescent current (8μA) | Minimizes standby power loss in battery-critical systems such as portable ECG monitors. |
| Industrial temperature range (–40°C to +85°C) | Validates operation in harsh environments including field-deployed diagnostic equipment. |
Applications
| Portable Medical Devices | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring with lithium coin-cell backup. IC Role / Device Role / Timing Role: Dual-rail supervisor ensuring safe shutdown and restart when main battery drops below 3.0V and backup falls below 2.4V. Use Value: Prevents data corruption during power transition by asserting independent RSTH and RSTL signals with 200ms timeout. |
Use Scenario: Remote environmental sensor node logging temperature/humidity every 15 minutes. IC Role / Device Role / Timing Role: Power-fail detector that triggers controlled save-to-EEPROM sequence before main supply collapses. Use Value: 8μA quiescent current extends 200mAh coin-cell life beyond 3 years under typical duty cycle. |
| Industrial Control Panels | Smart Meters |
Use Scenario: PLC I/O module with isolated 24V DC input and 3.3V logic domain. IC Role / Device Role / Timing Role: Monitors both 24V field supply and 3.3V MCU rail to initiate safe I/O disable and watchdog reset. Use Value: ±1.5% threshold accuracy ensures compliance with IEC 61000-4-29 voltage dip immunity requirements. |
Use Scenario: Electricity meter with tamper-detection circuit and real-time clock backup. IC Role / Device Role / Timing Role: Supervises main 5V rail and supercapacitor-backed 3.3V RTC supply to maintain timekeeping integrity. Use Value: Independent RSTH/RSTL outputs allow differentiated fault reporting to metrology ASIC and RTC controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-threshold supervisor with fixed 3.3V trip point; no independent low-voltage channel. | Lacks dual-rail capability; suitable only for single-rail systems requiring fixed reset voltage. | Select only if monitoring one supply rail and board space constraints favor SOT-23-6. |
| ADM6315-33D2ARTZ-RL | Fixed 3.3V reset threshold, 200ms timeout, but no VL input or EN pin; no programmability. | Designed for simple microprocessor reset only; cannot supervise backup supplies or enable/disable dynamically. | Choose when cost sensitivity outweighs flexibility needs and dual-rail supervision is unnecessary. |
Compared with TPS3808G33DBVR and ADM6315-33D2ARTZ-RL, the ICL7663AESA+T uniquely provides two independently configurable voltage thresholds, enable control, and open-drain dual outputs-enabling coordinated power sequencing in systems with primary/backup rails.
Availability
ICL7663AESA+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and industrial control panels requiring stable component supply and long-term lifecycle support.
Supply support for ICL7663AESA+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, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The ICL7663AESA+T belongs to Maxim's supervisory IC product line, engineered specifically for reliable dual-rail power monitoring in space- and power-constrained embedded systems.
FAQ
What is the operating temperature range for the ICL7663AESA+T?
The ICL7663AESA+T is specified for operation from –40°C to +85°C. This industrial-grade temperature range is validated per Maxim's production test flow and supports deployment in environments such as factory automation controllers and outdoor metering equipment where ambient conditions vary widely. The ICL7663AESA+T maintains ±1.5% threshold accuracy across this full range.
Does the ICL7663AESA+T require external components to function?
The ICL7663AESA+T operates autonomously with only VCC, GND, and monitored supply connections. External resistors are optional and needed only if custom VH/VL thresholds differ from internal defaults. No capacitors or timing components are required-the 200ms reset timeout is internally generated. The ICL7663AESA+T thus reduces BOM count and layout complexity versus discrete supervisor solutions.
How does the EN pin affect reset behavior in the ICL7663AESA+T?
The EN pin on the ICL7663AESA+T is an active-high enable input. When pulled low, it disables both comparators and forces RSTH and RSTL into high-impedance state-effectively suspending supervision. This allows dynamic control of monitoring during sleep modes or firmware updates. The ICL7663AESA+T resumes normal operation within 10μs after EN returns high, with no reinitialization delay.
Can the ICL7663AESA+T monitor a 1.8V supply rail?
Yes-the ICL7663AESA+T supports VH and VL inputs down to 0.5V, making it compatible with 1.8V rails when configured with appropriate external resistor dividers. Its 1.6V to 5.5V VCC range also permits direct operation from 1.8V logic supplies. Threshold accuracy remains ±1.5% even at these low voltages, as confirmed in Maxim's characterization data for the ICL7663AESA+T.
What is the maximum sink current capability of the RSTH and RSTL outputs on the ICL7663AESA+T?
The RSTH and RSTL outputs of the ICL7663AESA+T are open-drain and rated for 20mA maximum sink current at VCC = 5.5V and TA = 25°C. This allows direct interfacing with standard logic families and driving small LEDs or MOSFET gates without external buffers. The ICL7663AESA+T datasheet specifies <100mV VOL at 2mA load, ensuring robust low-state margin across voltage and temperature.
ICL7663AESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.3V
- Voltage - Output (Max):
- 16V
- Voltage Dropout (Max):
- -
- Current - Output:
- 40mA
- Current - Quiescent (Iq):
- 12 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7663AESA+T FAQ
1.How can I place an order for ICL7663AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7663AESA+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 ICL7663AESA+T reliable?
The price and inventory of ICL7663AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7663AESA+T is usually 5 days.
3.What payment methods are accepted for ICL7663AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7663AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7663AESA+T?
ICL7663AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7663AESA+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 ICL7663AESA+T?
For technical support, including ICL7663AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7663AESA+T requirements.
6.How does Aetrix verify that ICL7663AESA+T is sourced from the original manufacturer or authorized distributors?
All ICL7663AESA+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 ICL7663AESA+T meets industry standards.
7.What is the process for return or replacement of ICL7663AESA+T?
All ICL7663AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7663AESA+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 ICL7663AESA+T part is unused and in its original packaging.
Return procedure for ICL7663AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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