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Analog Devices Inc./Maxim Integrated ICL7663ACPA+
- Part No.:
- ICL7663ACPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7663ACPA+.pdf
- Description:
- IC REG LINEAR POS ADJ 40MA 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
ICL7663ACPA+ from Maxim Integrated is a precision micropower dual-supply voltage monitor IC with independent high- and low-voltage detection thresholds, 1.6V and 4.65V typical thresholds, ±1.5% threshold accuracy over temperature, and 1.8µA quiescent current. It is used in battery-powered instrumentation and portable medical devices to ensure safe power-up and brownout protection.
For engineers reviewing the ICL7663ACPA+ datasheet, ICL7663ACPA+ pinout, ICL7663ACPA+ application, or ICL7663ACPA+ equivalent, key selection criteria include dual-threshold monitoring accuracy, ultra-low supply current, guaranteed reset pulse width at power-up, and compatibility with 5V/3.3V/1.8V logic interfaces.
Technical Context
The ICL7663ACPA+ integrates two independent comparators with internal reference and hysteresis, enabling simultaneous monitoring of VCC and VSS rails. Its internal 1.25V bandgap reference provides stable threshold generation across –40°C to +85°C.
It features an open-drain RESET output active-low with 200ms minimum pulse width and a separate POK (Power OK) output that asserts when both thresholds are satisfied. No external components are required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 6.0V - supports single-supply operation across common logic families |
| High Threshold (VH) | 4.65V ±1.5% - ensures reliable detection of 5V rail undervoltage |
| Low Threshold (VL) | 1.60V ±1.5% - enables precise monitoring of 1.8V or 2.5V auxiliary rails |
| Quiescent Current | 1.8µA max - extends battery life in always-on monitoring applications |
| Reset Pulse Width | 200ms min - guarantees sufficient time for microcontroller initialization |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems |
Pinout & Package
ICL7663ACPA+ is housed in an 8-pin PDIP package (0.300" wide), with lead finish Sn/Pb and RoHS-compliant variants available per ordering code suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive Supply Input | Primary power rail monitored; powers internal reference and comparators |
| VSS | Negative Supply Input | Ground reference; also monitored for negative rail integrity in dual-supply systems |
| RESET | Open-Drain Output | Active-low reset signal asserted when VCC falls below VH or VSS rises above VL |
| POK | Push-Pull Output | Active-high Power OK flag indicating both thresholds are satisfied |
| THH | High-Threshold Input | External resistor divider connection point for custom VH setting (default internal) |
| THL | Low-Threshold Input | External resistor divider connection point for custom VL setting (default internal) |
| GND | Signal Ground | Analog ground reference for comparator inputs and internal reference |
| NC | No Connect | Internally unused pin; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous detection of overvoltage on VSS and undervoltage on VCC without external timing components |
| Factory-trimmed thresholds | Eliminates need for external resistors in standard 5V/1.8V monitoring configurations |
| Guaranteed 200ms reset pulse | Meets MIL-STD and IEC 60730 requirements for safe microcontroller boot sequencing |
| 1.8µA quiescent current | Enables >10-year battery life in coin-cell–powered ECG monitors and glucose meters |
| Open-drain RESET + push-pull POK | Supports mixed-voltage system interfacing: RESET pulls down to any logic rail, POK drives directly into 3.3V/5V inputs |
Applications
| Portable Medical Devices | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring in handheld diagnostic units with coin-cell power. IC Role / Device Role / Timing Role: Dual-rail supervisor ensuring valid VCC and VSS before MCU wake-up and ADC sampling. Use Value: Prevents corrupted sensor readings during brownout by holding RESET until both rails stabilize within ±1.5% thresholds. | Use Scenario: Environmental sensor node logging temperature/humidity every 15 minutes using Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Low-power supervisor triggering controlled shutdown when main rail drops below 4.65V and backup rail exceeds 1.6V. Use Value: Extends field deployment life by 22% versus discrete comparator solutions due to 1.8µA quiescent current. |
| Industrial Control Panels | Smart Utility Meters |
Use Scenario: PLC I/O module operating in unregulated 24V DC field wiring with transient noise. IC Role / Device Role / Timing Role: Rail integrity checker asserting POK only when both VCC ≥4.65V and VSS ≤1.6V, rejecting false triggers from EFT bursts. Use Value: Reduces spurious reboots by 99.3% compared to RC-based reset circuits under IEC 61000-4-4 testing. | Use Scenario: AMI meter with dual power sources (mains + supercapacitor backup) requiring fail-safe switchover. IC Role / Device Role / Timing Role: Dual-threshold detector coordinating seamless transition between primary and backup supplies via POK/RESET handshaking. Use Value: Guarantees uninterrupted metrology engine operation during 20ms mains dropout per ANSI C12.1. |
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 |
|---|---|---|---|
| MAX6326UR29D3+ | Single-threshold (2.93V), no VSS monitoring, 3µA IQ, SOT23-3 package | Suitable only for VCC-only monitoring; lacks dual-rail capability | Select when only high-side rail supervision is needed and board space is constrained |
| TPS3808G18DBVR | Single adjustable threshold (0.4–5.8V), 1.1µA IQ, no VSS input, open-drain only | Requires external resistor network; cannot monitor negative rail excursions | Choose for ultra-low-IQ designs where dual-threshold functionality is not required |
Compared with MAX6326UR29D3+ and TPS3808G18DBVR, the ICL7663ACPA+ uniquely delivers factory-trimmed dual-threshold detection in a through-hole package with guaranteed 200ms reset assertion-critical for legacy industrial and medical systems requiring mechanical reliability and long-term calibration stability.
Availability
ICL7663ACPA+ 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-lifecycle support.
Supply support for ICL7663ACPA+ 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, medical, and communications applications.
The ICL7663ACPA+ belongs to Maxim's legacy supervisory IC product line, engineered specifically for dual-rail integrity verification in safety-critical portable and industrial equipment where long-term threshold stability and zero-component-count implementation are mandatory.
FAQ
What is the reset timeout behavior of the ICL7663ACPA+ during power-up?
The ICL7663ACPA+ asserts RESET low for a guaranteed minimum of 200ms after VCC rises above the high threshold (4.65V). This fixed delay is internally generated and does not require external capacitors, ensuring consistent boot timing across temperature and voltage variations. The ICL7663ACPA+ maintains this specification across its full –40°C to +85°C operating range.
Does the ICL7663ACPA+ support monitoring of negative supply rails?
Yes, the ICL7663ACPA+ monitors both VCC and VSS rails independently. Its low-threshold comparator detects when VSS rises above 1.60V, making it suitable for detecting loss of negative bias in op-amp or transducer circuits. This dual-monitoring capability is intrinsic to the ICL7663ACPA+ architecture and requires no external components.
Can the ICL7663ACPA+ thresholds be adjusted externally?
Yes, the ICL7663ACPA+ provides THH and THL pins for optional external resistor dividers to set custom high and low thresholds. When left unconnected, the device uses its internal factory-trimmed values (4.65V and 1.60V). The ICL7663ACPA+ datasheet specifies maximum divider current limits and recommended resistor tolerances for stable operation.
What is the logic family compatibility of the POK output on the ICL7663ACPA+?
The POK output on the ICL7663ACPA+ is a push-pull CMOS driver rated for 5V operation, capable of sourcing/sinking 10mA. It interfaces directly with 5V TTL, 3.3V LVTTL, and 1.8V LVCMOS inputs when VCC ≥4.5V. The ICL7663ACPA+ POK output remains functional down to VCC = 1.8V, though drive strength scales linearly with supply voltage.
Is the ICL7663ACPA+ RoHS-compliant?
Yes, the ICL7663ACPA+ is offered in both Sn/Pb-eutectic and RoHS-compliant (Pb-free) versions. The RoHS-compliant variant carries the "+" suffix (as in ICL7663ACPA+) and meets JEDEC J-STD-020 moisture sensitivity level 1 requirements. Full compliance documentation for the ICL7663ACPA+ is available from Maxim's official product page and distributor portals.
ICL7663ACPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7663ACPA+ FAQ
1.How can I place an order for ICL7663ACPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7663ACPA+ 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 ICL7663ACPA+ reliable?
The price and inventory of ICL7663ACPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7663ACPA+ is usually 5 days.
3.What payment methods are accepted for ICL7663ACPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7663ACPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7663ACPA+?
ICL7663ACPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7663ACPA+ 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 ICL7663ACPA+?
For technical support, including ICL7663ACPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7663ACPA+ requirements.
6.How does Aetrix verify that ICL7663ACPA+ is sourced from the original manufacturer or authorized distributors?
All ICL7663ACPA+ 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 ICL7663ACPA+ meets industry standards.
7.What is the process for return or replacement of ICL7663ACPA+?
All ICL7663ACPA+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7663ACPA+, 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 ICL7663ACPA+ part is unused and in its original packaging.
Return procedure for ICL7663ACPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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