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Renesas ICL7665SACBAZA
- Part No.:
- ICL7665SACBAZA
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SACBAZA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,510
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Product details
Overview
ICL7665SACBAZA from Intersil is a CMOS micropower dual over/under voltage detector IC with individually programmable trip points, 1.3V internal bandgap reference, guaranteed ≤10µA supply current at +70°C, and operation from 1.6V to 16V supply - used for battery low-voltage warning, power-fail detection, and system fault monitoring in portable instrumentation and memory backup circuits.
For engineers reviewing the ICL7665SACBAZA datasheet, ICL7665SACBAZA pinout, ICL7665SACBAZA application, or ICL7665SACBAZA equivalent, key selection considerations include its dual open-drain comparator outputs (OUT1/OUT2), hysteresis control via HYST1/HYST2, SOIC-8 Pb-free package, ±50mV VSET1–VSET2 mismatch tolerance, and 100ppm/°C threshold temperature coefficient.
Technical Context
The ICL7665SACBAZA integrates two independent high-impedance comparators referencing a precision 1.3V bandgap, each driving complementary open-drain MOS outputs: OUT1/OUT2 (N-channel, sink-only) and HYST1/HYST2 (P-channel, source-only). Trip thresholds are set externally via resistor dividers on SET1/SET2 pins, with hysteresis configured by routing HYSTx outputs to adjust effective divider ratios.
It operates across 0°C to +70°C (commercial grade), supports supply voltages from 1.6V to 16V, delivers up to 20mA output sink current per OUTx pin, and maintains <10µA max quiescent current over temperature - enabling long-life battery operation in pagers, portable computers, and charging systems without compromising detection accuracy or response time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - enables direct interface with single-cell Li-ion (3.0–4.2V), 5V logic rails, and 12V industrial supplies without external regulation. |
| Max Supply Current | 10µA at +70°C - ensures multi-year battery life in always-on monitoring applications such as memory backup supervisors. |
| Internal Reference | 1.30V ±2.5% (ICL7665SA variant); 1.30V ±3.8% (ICL7665S) - provides stable trip point baseline independent of supply variation. |
| Threshold Tempco | 100ppm/°C (ICL7665SA) - limits trip voltage drift to ±0.78mV/°C over -40°C to +85°C range, critical for precision brownout detection. |
| Output Type | Open-drain N-channel (OUT1/OUT2) and open-drain P-channel (HYST1/HYST2) - allows flexible wired-OR logic, level shifting, and bidirectional hysteresis control. |
| Propagation Delay | 55–90µs (typ.) - supports fast response to supply transients while avoiding noise-induced false triggering in noisy DC environments. |
| VSET Input Leakage | ≤10nA - permits use of high-value resistors (>1MΩ) in voltage dividers without significant error, reducing power consumption in sensing networks. |
Pinout & Package
ICL7665SACBAZA is housed in an 8-lead narrow-body SOIC (Pb-free, RoHS-compliant) per JEDEC MS-012-AA, with 1.27mm lead pitch, 4.00mm body width, and thermal resistance θJA = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT1 | N-channel open-drain output | Sinks current when SET1 voltage exceeds programmed threshold; used for undervoltage or overvoltage alarm assertion. |
| 2 HYST1 | P-channel open-drain output | Sources current to modify SET1 divider network and add hysteresis; active-high when OUT1 is asserted. |
| 3 SET1 | Comparator 1 input | High-impedance node (≤10nA leakage) for resistor-divider feedback; referenced to 1.3V internal bandgap. |
| 4 GND | Analog ground reference | Return path for internal bandgap, comparators, and output stages; must be low-impedance to minimize noise coupling. |
| 5 V+ | Positive supply rail | Power input (1.6–16V); also serves as pull-up reference for HYSTx outputs and defines output saturation limits. |
| 6 OUT2 | N-channel open-drain output | Sinks current when SET2 voltage crosses its threshold; independently configurable for second fault condition (e.g., low-battery warning). |
| 7 SET2 | Comparator 2 input | Independent high-Z input for second voltage monitor; supports differential or separate rail monitoring with ±50mV offset vs. SET1. |
| 8 HYST2 | P-channel open-drain output | Sources current to adjust SET2 divider; enables independent hysteresis tuning for second detection channel. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage (e.g., 5.5V) and undervoltage (e.g., 4.5V) monitoring on one chip - reduces BOM count and PCB area vs. discrete solutions. |
| Individually programmable hysteresis | HYST1/HYST2 outputs allow precise, resistor-based hysteresis adjustment per channel - eliminates need for external op-amps or comparators in noise-prone environments. |
| 1.3V precision bandgap reference | Stable internal reference with 100ppm/°C tempco (ICL7665SA) - ensures consistent trip points across temperature without external calibration. |
| Ultra-low quiescent current | ≤10µA max over full temperature range - extends battery life in always-on applications like pocket pagers and portable medical devices. |
| Pb-free SOIC-8 package | RoHS-compliant 8-lead narrow-body SOIC (M8.15) - compatible with standard reflow soldering and automated assembly lines. |
Applications
| Battery Low-Voltage Warning | Single-Supply Power OK Monitor |
|---|---|
|
Use Scenario: Detecting falling battery voltage in portable computers before critical shutdown. IC Role / Device Role / Timing Role: ICL7665SACBAZA compares battery voltage against 3.0V threshold using SET2; OUT2 asserts low when voltage drops below threshold. Use Value: Provides early warning with adjustable hysteresis to prevent oscillation near trip point, enabling graceful OS shutdown before data loss. |
Use Scenario: Generating a "POWER OK" signal for microprocessor reset in 5V-powered embedded systems. IC Role / Device Role / Timing Role: ICL7665SACBAZA monitors +5V rail via SET1 (4.5V trip) and SET2 (5.5V trip); OUT1/OUT2 wired-OR to produce active-low POWER OK. Use Value: Dual-threshold detection prevents false resets during brief line sags while ensuring reliable startup sequencing and brownout protection. |
| Memory Backup Supervisor | AC Brownout Detection |
|
Use Scenario: Preventing corruption of CMOS SRAM during main power failure in industrial controllers. IC Role / Device Role / Timing Role: ICL7665SACBAZA senses 5V regulator output; OUT2 disables write-enable when voltage falls below 4.75V. Use Value: Guarantees ≤10µA standby current draw from backup battery, extending backup runtime beyond 10 years in typical configurations. |
Use Scenario: Detecting AC line undervoltage in wall-powered consumer electronics using transformer secondary sensing. IC Role / Device Role / Timing Role: ICL7665SACBAZA monitors rectified AC waveform via SET1; OUT1 discharges timing capacitor, OUT2 triggers alarm when charge exceeds 1.3V. Use Value: Eliminates need for dedicated AC-sensing ICs; supports 16.7ms cycle timing with <10µA average current, enabling compact, low-cost brownout protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7032IDR | Push-pull outputs (no open-drain), fixed 1.24V reference, 360nA quiescent current, no hysteresis control pins | Requires external hysteresis resistors; unsuitable for wired-OR or bidirectional hysteresis schemes used in ICL7665SACBAZA designs | Select TLV7032IDR only if push-pull outputs and ultra-low IQ are prioritized over programmable hysteresis and dual open-drain flexibility. |
| MAX6326UT46D3+T | Fixed 4.63V reset threshold, single-channel, no SET/HYST pins, 1.6µA IQ, SOT23-3 package | Provides only single-voltage supervision; lacks dual-threshold capability and external trip point programming of ICL7665SACBAZA | Choose MAX6326UT46D3+T for simple single-rail reset generation where dual monitoring and resistor-programmable thresholds are unnecessary. |
Compared with TLV7032IDR and MAX6326UT46D3+T, the ICL7665SACBAZA uniquely supports independent, resistor-programmed over/under detection with dedicated hysteresis control per channel - making it irreplaceable in applications requiring adaptive trip points and robust noise immunity without added components.
Availability
ICL7665SACBAZA is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and memory power back-up applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ICL7665SACBAZA 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 a focus on high-reliability industrial and infrastructure solutions.
The ICL7665S product line was designed specifically for micropower voltage monitoring in battery-critical systems - delivering guaranteed low IQ, wide supply range, and dual independent comparators with integrated reference for simplified fault detection circuitry.
FAQ
What is the operating temperature range for the ICL7665SACBAZA?
The ICL7665SACBAZA is specified for commercial temperature operation from 0°C to +70°C, as confirmed in the Ordering Information table on page 2 of FN3182 Rev 10.00. It is not rated for industrial (-40°C to +85°C) operation - that range applies to variants marked with 'I' suffix (e.g., ICL7665SAIBAZA). The ICL7665SACBAZA uses the same SOIC-8 package (M8.15) and shares all electrical specs within its defined temperature window.
Does the ICL7665SACBAZA have a built-in voltage reference?
Yes, the ICL7665SACBAZA integrates a precision 1.3V bandgap reference that serves both comparators. This reference is internally trimmed and exhibits 100ppm/°C temperature coefficient (for ICL7665SA-grade parts, which includes ICL7665SACBAZA). It operates across the full 1.6V–16V supply range and eliminates the need for external reference components in voltage monitoring circuits.
Can the ICL7665SACBAZA detect both overvoltage and undervoltage on the same supply rail?
Yes - the ICL7665SACBAZA is explicitly designed for this function. Using external resistor dividers on SET1 and SET2, one channel (e.g., SET1 → OUT1/HYST1) can be configured as an overvoltage detector (e.g., trip at 5.5V), while the other (SET2 → OUT2/HYST2) acts as an undervoltage detector (e.g., trip at 4.5V). Figure 12 in the datasheet shows this exact configuration generating a "POWER OK" signal.
What are the absolute maximum ratings for the SET1 and SET2 inputs of the ICL7665SACBAZA?
The SET1 and SET2 pins tolerate input voltages from (GND − 0.3V) to (V+ + 0.3V), per Absolute Maximum Ratings on page 3 of FN3182 Rev 10.00. Exceeding these limits risks SCR latchup due to the CMOS process structure. For safe operation, ensure external resistor dividers never drive SETx beyond this range - especially during power-up sequencing or transient events.
Is the ICL7665SACBAZA pin-compatible with older ICL7665 variants?
Yes - the ICL7665SACBAZA maintains identical pinout and footprint with all ICL7665 family members in SOIC-8 (M8.15) and PDIP-8 (E8.3) packages, including legacy ICL7665B and ICL7665C versions. Electrical improvements (wider V+, tighter VSET accuracy, lower IQ) do not affect mechanical or logical compatibility, enabling drop-in replacement in existing designs.
ICL7665SACBAZA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7665SACBAZA FAQ
1.How can I place an order for ICL7665SACBAZA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SACBAZA 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 ICL7665SACBAZA reliable?
The price and inventory of ICL7665SACBAZA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SACBAZA is usually 5 days.
3.What payment methods are accepted for ICL7665SACBAZA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SACBAZA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SACBAZA?
ICL7665SACBAZA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SACBAZA 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 ICL7665SACBAZA?
For technical support, including ICL7665SACBAZA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SACBAZA requirements.
6.How does Aetrix verify that ICL7665SACBAZA is sourced from the original manufacturer or authorized distributors?
All ICL7665SACBAZA 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 ICL7665SACBAZA meets industry standards.
7.What is the process for return or replacement of ICL7665SACBAZA?
All ICL7665SACBAZA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SACBAZA, 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 ICL7665SACBAZA part is unused and in its original packaging.
Return procedure for ICL7665SACBAZA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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