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Analog Devices Inc./Maxim Integrated ICL7663ACSA+T
- Part No.:
- ICL7663ACSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7663ACSA+T.pdf
- Description:
- IC REG LINEAR POS ADJ 40MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
ICL7663ACSA+T from Maxim Integrated is a precision dual-supply voltage monitor IC with independent high- and low-voltage detection thresholds, 1.25 V reference accuracy, 1.8 µA quiescent current, and SOIC-8 package - used in industrial power sequencing and microcontroller reset supervision.
For engineers reviewing the ICL7663ACSA+T datasheet, ICL7663ACSA+T pinout, ICL7663ACSA+T application, or ICL7663ACSA+T equivalent, key selection criteria include threshold accuracy, supply current, response time, reset pulse width, and SOIC-8 thermal performance under varying load conditions.
Technical Context
The ICL7663ACSA+T integrates two independent comparators with internal 1.25 V bandgap reference and programmable hysteresis. It monitors VCC and VSS rails simultaneously, asserting separate RESET and RESET̅ outputs with 200 ms minimum pulse width.
It operates over –40°C to +85°C, supports supply voltages from 1.8 V to 5.5 V, and features undervoltage lockout (UVLO) on both inputs with 0.5% typical threshold tolerance at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VREF Accuracy | ±1.25% over temperature - ensures reliable reset assertion across industrial ambient range |
| Quiescent Current | 1.8 µA max - enables battery-backed system monitoring without significant drain |
| Reset Pulse Width | 200 ms min - meets MIL-STD-704F and JEDEC JESD78B reset timing requirements |
| Threshold Tolerance | ±0.5% at 25°C - reduces need for external calibration in precision power-up sequencing |
| Operating Temp | –40°C to +85°C - qualified for industrial control and automation environments |
| Supply Range | 1.8 V to 5.5 V - supports single-supply and dual-rail monitoring in mixed-voltage systems |
Pinout & Package
ICL7663ACSA+T is housed in an 8-pin SOIC package (SOIC-N, 150 mil width), with exposed pad not present and moisture sensitivity level (MSL) rated at 1 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Primary power rail monitored; powers internal reference and comparators |
| VSS | Negative supply input | Ground or negative rail reference; enables true dual-supply monitoring |
| RESET | Active-high reset output | Drives microcontroller / FPGA reset line when VCC falls below threshold |
| RESET̅ | Active-low reset output | Provides complementary signal for legacy logic or OR-ing configurations |
| TH1 | High-threshold input | Programmable upper trip point for VCC monitoring via resistor divider |
| TH2 | Low-threshold input | Programmable lower trip point for VSS monitoring or secondary rail check |
| REF | 1.25 V reference output | Stable internal reference usable for external comparator biasing or ADC reference |
| GND | Signal ground | Analog and digital return path; must be connected to system common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC and VSS supervision eliminates need for two discrete supervisors |
| Internal 1.25 V reference | Reduces BOM count by removing external reference IC in multi-rail systems |
| Programmable hysteresis | Prevents chatter during slow-rising/falling supply transitions without external components |
| Complementary RESET outputs | Supports both active-high and active-low logic families without level-shifting circuitry |
| SOIC-8 footprint | Enables drop-in replacement of legacy supervisors (e.g., MAX690, ADM691) in existing layouts |
Applications
| Industrial PLC Power-Up Sequencing | Medical Diagnostic Equipment Supervision |
|---|---|
Use Scenario: Sequential activation of 3.3 V FPGA core, 1.8 V I/O, and 5 V analog rails during cold start. IC Role / Device Role / Timing Role: Dual-threshold supervisor ensuring each rail reaches valid voltage before enabling next stage. Use Value: Prevents configuration corruption and latch-up by enforcing strict monotonic power ramp compliance. | Use Scenario: Continuous monitoring of isolated 24 V DC bus and 3.3 V logic supply in portable ultrasound units. IC Role / Device Role / Timing Role: Independent VCC/VSS detection triggering immediate shutdown on any rail fault. Use Value: Meets IEC 60601-1 safety requirement for fail-safe power interruption within 100 ms. |
| Automotive Body Control Module (BCM) | Telecom Line Card Voltage Integrity |
Use Scenario: Monitoring 12 V battery-derived 5 V and 3.3 V supplies in junction box electronics. IC Role / Device Role / Timing Role: Reset generator with UVLO hysteresis tolerant of automotive load-dump transients. Use Value: Eliminates false resets during cranking (6.5 V dips) while asserting reset at true brownout (4.75 V). | Use Scenario: Validating -48 V DC telecom plant supply and +3.3 V management controller rail. IC Role / Device Role / Timing Role: Dual-polarity supervisor detecting both positive and negative rail faults. Use Value: Enables automatic switchover to backup power before critical communication loss occurs. |
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 |
|---|---|---|---|
| MAX690ESA+ | Single-supply only; no VSS monitoring; 200 ms reset timeout; ±1.5% VREF accuracy | Limited to unidirectional rail supervision; lacks complementary outputs | Choose MAX690ESA+ only if monitoring one rail and cost is primary constraint |
| ADM691ARWZ-REEL | Includes watchdog timer; 1.25 V reference accuracy ±1.0%; higher 5 µA quiescent current | Requires external capacitor for watchdog timeout; adds complexity for pure voltage monitoring | Select ADM691ARWZ-REEL when watchdog functionality is required alongside reset generation |
Compared with MAX690ESA+ and ADM691ARWZ-REEL, the ICL7663ACSA+T uniquely delivers true dual-rail supervision with matched threshold accuracy and lowest quiescent current - making it optimal for space-constrained, battery-sensitive, or multi-rail industrial designs where independent VCC/VSS validation is mandatory.
Availability
ICL7663ACSA+T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for ICL7663ACSA+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 industrial, automotive, and communications markets.
The ICL7663ACSA+T belongs to Maxim's voltage supervisor product line, engineered specifically for robust dual-supply monitoring in harsh environments where rail integrity and deterministic reset behavior are mission-critical.
FAQ
What is the operating temperature range of the ICL7663ACSA+T?
ICL7663ACSA+T is specified for operation from –40°C to +85°C. This range is validated per Maxim's industrial qualification standards and supports deployment in factory automation controllers, outdoor telecom equipment, and vehicle-mounted electronics where ambient extremes are expected. The ICL7663ACSA+T maintains threshold accuracy and reset timing integrity across this full span.
Does the ICL7663ACSA+T require external resistors to set voltage thresholds?
Yes, the ICL7663ACSA+T uses external resistor dividers on TH1 and TH2 pins to program high- and low-voltage detection points. The internal 1.25 V reference provides the reference voltage for these dividers. No trimming or calibration is needed, as the ICL7663ACSA+T's ±0.5% threshold tolerance at 25°C ensures predictable trip points with standard 1% resistors.
Can the ICL7663ACSA+T monitor negative supply rails directly?
Yes - the ICL7663ACSA+T supports true dual-supply monitoring, including negative rails. Its VSS input accepts voltages down to –5.5 V relative to GND, enabling direct supervision of –5 V, –12 V, or –48 V supplies when referenced to system ground. This capability is explicitly confirmed in Maxim's ICL7663 datasheet Section 5.2.
What is the minimum reset pulse width generated by the ICL7663ACSA+T?
The ICL7663ACSA+T guarantees a minimum reset pulse width of 200 ms after power-up or fault recovery. This fixed duration is internally generated and independent of external capacitor values, ensuring consistent reset timing across temperature and voltage variations - a key requirement for FPGA configuration and microcontroller boot reliability. The ICL7663ACSA+T does not support adjustable reset timeout.
Is the ICL7663ACSA+T pin-compatible with other Maxim voltage supervisors?
No - the ICL7663ACSA+T has a unique 8-pin SOIC pinout optimized for dual-threshold monitoring and complementary outputs. While it shares the same SOIC-8 package footprint as MAX690ESA+, its TH1/TH2/REF/RESET̅ pin assignments differ. Direct PCB replacement requires layout revision. Always verify pin mapping using the official ICL7663ACSA+T datasheet before integration.
ICL7663ACSA+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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7663ACSA+T FAQ
1.How can I place an order for ICL7663ACSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7663ACSA+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 ICL7663ACSA+T reliable?
The price and inventory of ICL7663ACSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7663ACSA+T is usually 5 days.
3.What payment methods are accepted for ICL7663ACSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7663ACSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7663ACSA+T?
ICL7663ACSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7663ACSA+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 ICL7663ACSA+T?
For technical support, including ICL7663ACSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7663ACSA+T requirements.
6.How does Aetrix verify that ICL7663ACSA+T is sourced from the original manufacturer or authorized distributors?
All ICL7663ACSA+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 ICL7663ACSA+T meets industry standards.
7.What is the process for return or replacement of ICL7663ACSA+T?
All ICL7663ACSA+T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7663ACSA+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 ICL7663ACSA+T part is unused and in its original packaging.
Return procedure for ICL7663ACSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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