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Renesas ICL7665SCPA
- Part No.:
- ICL7665SCPA
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7665SCPA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,335
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Product details
Overview
ICL7665SCPA from Intersil is a dual CMOS micropower over/under voltage detector IC with two independently programmable comparators, 1.3V internal bandgap reference, 3µA typical supply current, 1.6V–16V operating voltage range, and open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs - used for battery low-voltage warning, power-fail detection, and supply fault monitoring in portable instrumentation and memory backup systems.
For engineers reviewing the ICL7665SCPA datasheet, ICL7665SCPA pinout, ICL7665SCPA application, or ICL7665SCPA equivalent, key selection considerations include its guaranteed ≤10µA max quiescent current over temperature, ±5mV trip voltage matching between detectors, 100ppm/°C threshold tempco (ICL7665S grade), individually settable hysteresis via external resistors, and PDIP-8 package compatibility with through-hole wave soldering.
Technical Context
The ICL7665SCPA integrates two independent high-impedance input comparators referencing a stable 1.3V bandgap source. Each comparator drives an open-drain output stage: OUT1/OUT2 sink up to 20mA to GND; HYST1/HYST2 source up to 25mA from V+. Trip points are set externally via resistor dividers on SET1/SET2 pins, with hysteresis controlled by HYST1/HYST2 feedback paths.
It operates across 0°C to +70°C with guaranteed 1.8V–16V supply range, supports 1.0mV minimum detectable ΔVSET (ICL7665S grade), and exhibits <100nA input leakage at SET pins. The device avoids latch-up risk via design precautions including internal SCR mitigation and recommended V+/GND decoupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 16V - supports single-cell Li-ion up to 12V industrial rails without external regulation |
| Quiescent Supply Current | ≤10µA max over full temp range - enables multi-year battery life in always-on monitoring |
| Internal Reference Voltage | 1.30V ±0.10V - provides stable trip baseline independent of supply variation |
| Output Sink/Source Capability | 20mA sink (OUT1/OUT2), 25mA source (HYST1/HYST2) - directly drives LEDs, MOSFET gates, or logic inputs |
| Threshold Tempco | 200ppm/°C - ensures <±15mV drift over 0°C–70°C for reliable trip point stability |
| Input Leakage Current | ≤10nA at SET pins - permits use of >10MΩ programming resistors without significant error |
| Propagation Delay | 55–90µs - sufficient for DC supply monitoring but not high-speed rail sequencing |
Pinout & Package
ICL7665SCPA uses an 8-lead PDIP (Plastic Dual-In-Line) package per JEDEC MS-001-BA (PKG DWG E8.3), with 0.300" body width, 0.100" lead pitch, and Pb-free RoHS-compliant finish. Designed for through-hole wave solder only - not reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | Open-drain N-channel output | Sinks current to GND when SET1 voltage exceeds 1.3V - used for overvoltage alarm or reset assertion |
| 2: HYST1 | Open-drain P-channel output | Sources current from V+ when SET1 > 1.3V - enables resistor-programmable hysteresis for undervoltage lockout |
| 3: SET1 | Inverting input of comparator 1 | High-impedance node (≤10nA leakage) for resistor-divider voltage sensing - sets upper trip threshold |
| 4: GND | Analog ground reference | Return path for internal bandgap, comparators, and output stages - must be low-impedance connection |
| 5: V+ | Positive supply input | Power rail for internal circuitry and HYSTx sourcing - accepts 1.8V–16V with ≤10µA total current draw |
| 6: OUT2 | Open-drain N-channel output | Sinks current to GND when SET2 voltage falls below 1.3V - used for low-battery warning or undervoltage flag |
| 7: SET2 | Non-inverting input of comparator 2 | High-impedance node for second resistor-divider - sets lower trip threshold independent of SET1 |
| 8: HYST2 | Open-drain P-channel output | Sources current from V+ when SET2 < 1.3V - enables independent hysteresis for overvoltage recovery |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage (OUT1/HYST1) and undervoltage (OUT2/HYST2) monitoring from one supply rail |
| Individually programmable trip points & hysteresis | External resistor networks on SET1/SET2 and HYST1/HYST2 allow precise, asymmetric thresholds without trimming |
| 1.3V precision bandgap reference | Stable internal reference eliminates need for external voltage reference IC or Zener diode |
| Guaranteed ≤10µA max supply current | Ensures predictable battery drain in always-on applications - validated across full 0°C–70°C range |
| Pb-free RoHS-compliant PDIP package | Meets environmental compliance requirements while maintaining legacy through-hole assembly compatibility |
Applications
| Battery Low-Voltage Warning | Single-Supply Power OK Monitor |
|---|---|
|
Use Scenario: Portable medical device detects declining lithium coin cell voltage before critical shutdown. IC Role / Device Role / Timing Role: ICL7665SCPA compares battery voltage against 2.7V threshold using SET2 divider; OUT2 asserts low-battery flag when voltage drops below trip point. Use Value: Enables user alert 30 seconds prior to brownout, preserving data integrity and allowing graceful shutdown. |
Use Scenario: Industrial PLC verifies 5V rail remains within ±5% tolerance during operation. IC Role / Device Role / Timing Role: ICL7665SCPA monitors 5V rail with SET1=4.75V (undervoltage) and SET2=5.25V (overvoltage); wired-OR outputs generate POWER_OK signal. Use Value: Prevents firmware corruption by disabling CPU clock when rail deviates beyond safe margins. |
| Memory Backup Supply Monitoring | AC Mains Brownout Detection |
|
Use Scenario: Embedded system maintains SRAM contents during main power loss using supercapacitor backup. IC Role / Device Role / Timing Role: ICL7665SCPA senses backup rail decay via SET2; OUT2 disables write-enable to CMOS RAM when voltage falls below 2.5V. Use Value: Eliminates need for separate supervisor IC - reduces BOM count and PCB area in space-constrained designs. |
Use Scenario: Smart meter detects utility voltage sag below 90VAC for grid event logging. IC Role / Device Role / Timing Role: ICL7665SCPA monitors rectified AC secondary via SET1; OUT1 triggers interrupt when voltage drops below programmed threshold. Use Value: Achieves <100ms response time with no external op-amps or comparators - simplifies analog front-end design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7032IDR | Single-supply, rail-to-rail comparator with 350nA IQ; no internal reference or hysteresis control | Requires external reference and hysteresis resistors; lacks dual-threshold integration | Choose when ultra-low IQ (<1µA) is critical and board space allows discrete hysteresis design |
| MAX6326UT46D3+ | Dedicated 4.63V reset IC with 20µs reset pulse, fixed threshold, no programmability | Provides guaranteed power-on reset timing but cannot monitor both over/under conditions | Choose for simple microprocessor reset where fixed threshold suffices and dual detection is unnecessary |
Compared with TLV7032IDR and MAX6326UT46D3+, the ICL7665SCPA uniquely delivers dual independently programmable thresholds, integrated hysteresis control, and sub-10µA supply current in a single PDIP-8 package - making it optimal for battery-backed systems requiring both overvoltage and undervoltage supervision without external components.
Availability
ICL7665SCPA is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and memory power back-up applications requiring stable component supply and long-term manufacturing continuity.
Supply support for ICL7665SCPA 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
Intersil Corporation is a precision analog and power management semiconductor company, now part of Renesas Electronics, with ISO9001-certified manufacturing and global distribution.
The ICL7665S family was designed specifically for micropower supply monitoring in portable and battery-critical systems, emphasizing ultra-low quiescent current, wide supply range, and flexible external threshold programming.
FAQ
What is the maximum supply voltage rating for the ICL7665SCPA?
The ICL7665SCPA has an absolute maximum supply voltage rating of +18V. However, its specified operating range is 1.8V to 16V across 0°C to +70°C. Operation above 16V may cause parametric degradation or reliability risk, and voltages exceeding +18V or falling below –0.3V relative to GND can trigger destructive latch-up due to inherent SCR structure.
Can the ICL7665SCPA monitor both overvoltage and undervoltage conditions simultaneously on the same supply rail?
Yes, the ICL7665SCPA can monitor both conditions simultaneously using its dual comparators. SET1 configures the overvoltage threshold (e.g., 5.5V), while SET2 configures the undervoltage threshold (e.g., 4.5V). OUT1 signals overvoltage, OUT2 signals undervoltage, and HYST1/HYST2 provide independent hysteresis control for each condition - all from a single 5V or 3.3V supply rail.
Does the ICL7665SCPA require external components to function as a basic voltage detector?
Yes, the ICL7665SCPA requires external resistor dividers on SET1 and SET2 to define trip voltages, plus pull-up resistors on OUT1/OUT2 for logic-level interfacing. HYST1/HYST2 also require external resistors to implement hysteresis. No external reference or capacitors are needed for basic operation, but a 0.05µF V+/GND decoupling capacitor is recommended to prevent supply-ramp-induced latch-up.
Is the ICL7665SCPA pin-compatible with earlier ICL7665 variants like the ICL7665B or ICL7665SA?
No, the ICL7665SCPA is not pin-compatible with ICL7665B or ICL7665SA. While all share the same 8-pin PDIP/SOIC footprint and functional pinout, the ICL7665SA offers tighter 2% threshold accuracy and 100ppm/°C tempco versus the ICL7665SCPA's looser tolerance and 200ppm/°C spec. Electrical differences affect direct substitution without validation of trip point stability and hysteresis behavior.
What is the purpose of the HYST1 and HYST2 pins on the ICL7665SCPA?
HYST1 and HYST2 are open-drain P-channel outputs that source current from V+ when their respective comparators change state. They enable external hysteresis by shorting or adding resistance in the SET1/SET2 voltage divider network - preventing oscillation near trip points caused by noise or slow-rising/falling supplies. Their use is optional but strongly recommended for robust fault detection in noisy environments.
ICL7665SCPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7665SCPA FAQ
1.How can I place an order for ICL7665SCPA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SCPA 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 ICL7665SCPA reliable?
The price and inventory of ICL7665SCPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SCPA is usually 5 days.
3.What payment methods are accepted for ICL7665SCPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SCPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SCPA?
ICL7665SCPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SCPA 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 ICL7665SCPA?
For technical support, including ICL7665SCPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SCPA requirements.
6.How does Aetrix verify that ICL7665SCPA is sourced from the original manufacturer or authorized distributors?
All ICL7665SCPA 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 ICL7665SCPA meets industry standards.
7.What is the process for return or replacement of ICL7665SCPA?
All ICL7665SCPA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SCPA, 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 ICL7665SCPA part is unused and in its original packaging.
Return procedure for ICL7665SCPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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