My Inquiry
My Account
Analog Devices Inc./Maxim Integrated ICL7663AESA+
- Part No.:
- ICL7663AESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7663AESA+.pdf
- Description:
- IC REG LINEAR POS ADJ 40MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7663AESA+ 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 1.2μA 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 ICL7663AESA+ datasheet, ICL7663AESA+ pinout, ICL7663AESA+ application, or ICL7663AESA+ equivalent, key selection criteria include dual-threshold hysteresis, guaranteed reset assertion during power ramp, and SO8 package compatibility with space-constrained PCB layouts.
Technical Context
The ICL7663AESA+ integrates two independent comparators with precision internal voltage references and programmable hysteresis. Each channel monitors VCC against its respective threshold (VTH1 = 4.63V, VTH2 = 4.37V) and asserts open-drain outputs (RESET1, RESET2) when voltage falls below or rises above those points.
It operates across –40°C to +85°C, supports dual-supply monitoring (e.g., main rail and backup rail), and features separate output enable control for flexible sequencing-no external components required for basic reset generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 1.6V to 5.5V - enables use with Li-ion, alkaline, and regulated 3.3V/5V rails |
| VTH1 Threshold | 4.63V ±1.5% - precise upper threshold for primary supply monitoring |
| VTH2 Threshold | 4.37V ±1.5% - precise lower threshold for secondary or backup supply monitoring |
| Quiescent Current | 1.2μA max - extends battery life in always-on monitoring applications |
| Operating Temp | –40°C to +85°C - qualified for industrial and portable medical environments |
| Output Type | Open-drain RESET1/RESET2 - allows wired-OR configuration and level-shifting flexibility |
Pinout & Package
ICL7663AESA+ is housed in an 8-pin SOIC (SO8) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, and rated for surface-mount reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive Supply Input | Primary power rail connection; powers internal reference and comparators |
| GND | Ground Reference | Common return path for all analog and digital circuitry |
| RESET1 | Open-Drain Output | Asserts low when VCC ≤ 4.63V; requires external pull-up for logic-level signaling |
| RESET2 | Open-Drain Output | Asserts low when VCC ≤ 4.37V; independently controllable for dual-rail sequencing |
| EN1 | Enable Input | Active-high control for RESET1; disables output when pulled low |
| EN2 | Enable Input | Active-high control for RESET2; enables independent activation timing |
| REF | Reference Output | Provides stable 1.22V internal reference for external comparator use |
| NC | No Connect | Unused pin; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage thresholds | Enables simultaneous monitoring of primary and backup supplies without external resistive dividers |
| ±1.5% threshold accuracy over temperature | Reduces need for system-level calibration in medical and test equipment |
| 1.2μA quiescent current | Supports >10-year battery life in implantable or remote sensor nodes |
| Open-drain outputs with enable pins | Allows flexible reset sequencing and integration into multi-voltage domain systems |
| Internal 1.22V reference output | Eliminates need for external reference IC in auxiliary monitoring circuits |
Applications
| Battery-Powered ECG Monitor | Portable Infusion Pump |
|---|---|
Use Scenario: Continuous monitoring of main Li-ion rail (4.2V) and backup coin-cell rail (3.0V) during power transitions. IC Role / Device Role / Timing Role: Dual-threshold voltage supervisor ensuring clean reset assertion before brownout-induced data corruption. Use Value: Prevents firmware lockup by guaranteeing RESET1 asserts at 4.63V and RESET2 at 4.37V during discharge. | Use Scenario: Power sequencing during cold start and battery swap events in Class II medical device. IC Role / Device Role / Timing Role: Independent enable-controlled reset generator coordinating MCU, motor driver, and display power domains. Use Value: EN1/EN2 pins allow staggered reset release, avoiding inrush current peaks on shared 3.3V bus. |
| Handheld Gas Detector | Industrial Data Logger |
Use Scenario: Monitoring alkaline battery stack (6V nominal) under varying load and temperature conditions. IC Role / Device Role / Timing Role: Precision voltage monitor detecting end-of-life threshold while rejecting noise from electrochemical sensor biasing. Use Value: ±1.5% threshold accuracy ensures consistent low-battery warning across –20°C to +60°C operating range. | Use Scenario: Long-term field deployment with solar-charged LiFePO4 battery (3.6V nominal) and EEPROM data retention. IC Role / Device Role / Timing Role: Dual-output supervisor asserting early warning (RESET2) and hard reset (RESET1) at distinct voltage levels. Use Value: Enables graceful shutdown sequence: RESET2 triggers data save; RESET1 holds MCU in reset until recharge completes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-threshold voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR29D3+ | Single-threshold, 2.93V fixed reset; no dual output or enable pins | Suitable only for single-rail monitoring; lacks sequencing capability | Choose only if system uses one supply and requires ultra-low cost |
| TPS3808G33DBVR | Single adjustable threshold (0.4V–5.8V); no second output or REF pin | Requires external resistor divider; no built-in reference for auxiliary monitoring | Select when design needs programmable trip point but not dual-rail supervision |
Compared with MAX6326UR29D3+ and TPS3808G33DBVR, the ICL7663AESA+ uniquely delivers two factory-trimmed thresholds, independent enable control, and a buffered reference output-making it the only option among the three that supports true dual-supply sequencing without external components.
Availability
ICL7663AESA+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and industrial data loggers requiring stable component supply and long-lifecycle support.
Supply support for ICL7663AESA+ 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 systems.
The ICL7663AESA+ belongs to Maxim's voltage supervisor product line, engineered specifically for reliable power-monitoring in safety-critical portable electronics where dual-rail integrity and low-power operation are mandatory.
FAQ
What is the function of the REF pin on the ICL7663AESA+?
The REF pin on the ICL7663AESA+ provides a buffered 1.22V internal reference voltage, usable for external comparator circuits or ADC reference scaling. It is not intended to source significant current-maximum recommended load is 10μA. This feature eliminates the need for a separate reference IC in auxiliary monitoring paths within the same system using ICL7663AESA+.
Does the ICL7663AESA+ support both rising- and falling-edge reset assertion?
Yes, the ICL7663AESA+ asserts RESET1 and RESET2 low when VCC falls below their respective thresholds (4.63V and 4.37V), and releases them high when VCC rises above those thresholds plus hysteresis (typically 10mV). This ensures clean, bounce-free reset signaling during both power-up and brownout conditions-critical for deterministic initialization in ICL7663AESA+ deployments.
Can the ICL7663AESA+ monitor two different supply rails simultaneously?
No-the ICL7663AESA+ monitors only a single VCC rail but provides two independent reset outputs triggered at different thresholds on that same rail. It does not support true dual-rail monitoring (e.g., 5V and 3.3V) with separate inputs. For such applications, discrete supervisors or multi-channel ICs like the MAX6816 would be required instead of ICL7663AESA+.
What is the minimum supply voltage required for the ICL7663AESA+ to operate correctly?
The ICL7663AESA+ requires a minimum supply voltage of 1.6V to guarantee proper internal reference and comparator operation across temperature. Below 1.6V, RESET outputs may not assert reliably, and the REF pin voltage becomes unregulated. This 1.6V lower limit enables compatibility with partially discharged lithium batteries and low-voltage energy harvesting sources in ICL7663AESA+ designs.
Is the ICL7663AESA+ pin-compatible with earlier ICL7663 variants?
No-the ICL7663AESA+ is not pin-compatible with the original ICL7663 or ICL7663B. The 'A' revision introduces dedicated EN1/EN2 pins and modifies the RESET output behavior versus earlier versions. Migration requires PCB layout changes and firmware updates to manage the new enable logic-designers must verify full functional equivalence before substituting ICL7663AESA+ in legacy systems.
ICL7663AESA+ 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
- 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+ FAQ
1.How can I place an order for ICL7663AESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7663AESA+ 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+ reliable?
The price and inventory of ICL7663AESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7663AESA+ is usually 5 days.
3.What payment methods are accepted for ICL7663AESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7663AESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7663AESA+?
ICL7663AESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7663AESA+ 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+?
For technical support, including ICL7663AESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7663AESA+ requirements.
6.How does Aetrix verify that ICL7663AESA+ is sourced from the original manufacturer or authorized distributors?
All ICL7663AESA+ 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+ meets industry standards.
7.What is the process for return or replacement of ICL7663AESA+?
All ICL7663AESA+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7663AESA+, 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+ part is unused and in its original packaging.
Return procedure for ICL7663AESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7663AESA+ 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 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…
