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Renesas ICL7665SIBAZ-T
- Part No.:
- ICL7665SIBAZ-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SIBAZ-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,682
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Product details
Overview
ICL7665SIBAZ-T from Intersil is a dual-channel CMOS micropower over/under voltage detector in 8-lead SOIC package, featuring individually programmable trip points (1.275V–1.325V), ±0.1mV trip difference, 100ppm/°C threshold temperature coefficient, and 2.5µA typical supply current at 2V - designed for battery-operated systems requiring precise low-voltage warning and fault monitoring.
For engineers reviewing the ICL7665SIBAZ-T datasheet, ICL7665SIBAZ-T pinout, ICL7665SIBAZ-T application, or ICL7665SIBAZ-T equivalent, this page delivers verified functional identity, industrial-grade (-40°C to +85°C) operating range, open-drain N/P-channel output architecture, hysteresis programming capability via external resistors, and confirmed compatibility with memory backup, portable instrumentation, and power fail detection circuits.
Technical Context
The ICL7665SIBAZ-T integrates two independent comparators referencing an internal 1.3V bandgap, each driving open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs. Trip thresholds are set externally via resistor dividers on SET1/SET2 pins, while hysteresis is configured using HYST1/HYST2 feedback paths.
It operates across 1.8V–16V supply range with guaranteed ≤10µA max quiescent current over temperature, 2% threshold accuracy (ICL7665SA variant), and output sink capability up to 20mA. Input leakage is ≤10nA, and propagation delay ranges from 55µs to 90µs depending on input transition direction and channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 16V - supports single-cell Li-ion, multi-cell alkaline, and regulated 5V/12V rails without external regulation. |
| Quiescent Current | 2.5µA typical at 2V, ≤10µA max over -40°C to +85°C - enables multi-year battery life in always-on monitoring applications. |
| Threshold Accuracy | ±2.5% (1.275V–1.325V at 25°C) - ensures reliable trip point repeatability across voltage and temperature for precision fault detection. |
| Temperature Coefficient | 100ppm/°C - limits threshold drift to ±10.5mV over full -40°C to +85°C range, critical for stable operation in industrial environments. |
| Output Sink/Source | 20mA sink (OUT1/OUT2), 25mA source (HYST1/HYST2) - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages. |
| Input Leakage Current | ≤10nA at SET1/SET2 - preserves high-impedance sensing integrity when using megaohm-level resistor dividers. |
| Propagation Delay | 55–90µs - provides fast response to supply transients while avoiding noise-induced false triggering in noisy DC systems. |
Pinout & Package
ICL7665SIBAZ-T uses an 8-lead narrow-body SOIC (M8.15) package, RoHS-compliant, with 1.27mm lead pitch and JEDEC MS-012-AA compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT1 | Open-drain N-channel output | Sinks current when VSET1 < 1.3V; used for undervoltage alarm or shutdown signal. |
| 2 HYST1 | Open-drain P-channel hysteresis control | Sources current to adjust rising-edge trip point of Detector 1 via external resistor network. |
| 3 SET1 | Undervoltage detector input | High-impedance node (≤10nA leakage) for resistor-divider voltage sensing; referenced to internal 1.3V bandgap. |
| 4 GND | Analog ground reference | Return path for internal bandgap, comparators, and output stages; must be low-noise and star-connected. |
| 5 V+ | Positive supply rail | Accepts 1.8V–16V; powers internal reference, comparators, and output drivers; decoupling capacitor required. |
| 6 OUT2 | Open-drain N-channel output | Sinks current when VSET2 > 1.3V; used for overvoltage alarm or power-ok assertion. |
| 7 SET2 | Overvoltage detector input | High-impedance node for resistor-divider sensing; independent of SET1, enabling asymmetric trip windows. |
| 8 HYST2 | Open-drain P-channel hysteresis control | Sources current to adjust falling-edge trip point of Detector 2; enables clean hysteresis implementation per Figure 10A. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detectors | Enables simultaneous overvoltage (OUT2/HYST2) and undervoltage (OUT1/HYST1) monitoring from one supply rail. |
| Programmable hysteresis | External resistor networks on HYST1/HYST2 allow precise control of hysteresis width (e.g., 100mV) to prevent chatter near trip points. |
| Bandgap-referenced threshold | Stable 1.3V internal reference ensures consistent trip points across supply and temperature variations without external components. |
| Ultra-low power operation | 2.5µA typical supply current at 2V enables use in coin-cell-powered devices like portable medical sensors and asset trackers. |
| Industrial temperature range | -40°C to +85°C guaranteed operation supports deployment in automotive infotainment, industrial PLCs, and outdoor IoT nodes. |
Applications
| Battery Backup Monitoring | Portable Instrumentation Power Supervision |
|---|---|
Use Scenario: Monitoring lithium coin-cell voltage during system sleep to prevent deep discharge and data corruption in SRAM/RTC backup circuits. IC Role / Device Role / Timing Role: ICL7665SIBAZ-T acts as dual-threshold supervisor: OUT1 triggers shutdown at 2.4V (undervoltage), OUT2 asserts warning at 2.7V (pre-warning). Use Value: Prevents irreversible battery damage and maintains data integrity by enabling graceful power-down before voltage collapse. |
Use Scenario: Ensuring stable 3.3V rail in handheld multimeters and oscilloscopes during battery drain or charger insertion events. IC Role / Device Role / Timing Role: ICL7665SIBAZ-T monitors main supply (SET1) and reference rail (SET2) independently; OUT1 disables analog front-end, OUT2 flags brownout to MCU. Use Value: Eliminates measurement errors and display glitches caused by marginal supply conditions, improving field reliability. |
| AC Power Fail Detection | Multi-Rail System Fault Monitoring |
Use Scenario: Detecting AC line dropout in wall-powered medical devices to initiate controlled shutdown and save patient data before backup capacitors deplete. IC Role / Device Role / Timing Role: ICL7665SIBAZ-T senses rectified AC waveform via SET1; OUT1 goes high on loss-of-zero-crossing, triggering interrupt within 100µs. Use Value: Provides deterministic 16.7ms warning window before 5V regulator dropout, meeting IEC 60601-1 safety timing requirements. |
Use Scenario: Simultaneous monitoring of +12V, +5V, and -5V rails in test equipment to detect partial supply failure without dedicated IC per rail. IC Role / Device Role / Timing Role: ICL7665SIBAZ-T uses resistor-summing network on SET1/SET2 to generate composite fault voltage; OUT1/OUT2 drive wired-OR "POWER OK" signal. Use Value: Reduces BOM count and PCB area versus discrete supervisors while maintaining fault isolation granularity per rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+T | Single-channel, fixed 2.93V threshold, 1.6µA quiescent current, SOT23-3 package | Lacks dual-channel flexibility and programmable hysteresis; suited only for simple reset generation | Select when space-constrained designs require minimal footprint and only one trip point is needed. |
| TLV809EADBZR | Single-channel, fixed 3.08V threshold, 0.5µA quiescent current, SOT23-3 package | No hysteresis control, no dual detection, lower accuracy (±2.5% vs ±2.5% but no tempco spec) | Choose for ultra-low-power applications where trip point is fixed and thermal stability is secondary. |
Compared with MAX6326US29D3+T and TLV809EADBZR, the ICL7665SIBAZ-T offers unique dual-channel programmability, hysteresis tuning, and industrial temperature support - making it irreplaceable in systems requiring coordinated over/under supervision of a single rail or composite multi-rail fault detection.
Availability
ICL7665SIBAZ-T is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and power fail detection requiring stable component supply with long-term industrial temperature support.
Supply support for ICL7665SIBAZ-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
Intersil Corporation is a precision analog and power management semiconductor provider, now part of Renesas Electronics, with expertise in low-power, high-accuracy supervisory ICs.
The ICL7665SIBAZ-T belongs to Intersil's micropower voltage detector product line, engineered specifically for battery-backed memory, portable medical devices, and industrial control systems demanding robust fault monitoring under wide voltage and temperature extremes.
FAQ
What is the operating temperature range of the ICL7665SIBAZ-T?
The ICL7665SIBAZ-T is rated for industrial operation from -40°C to +85°C. This range is explicitly guaranteed in the datasheet's Operating Conditions table and applies to all electrical specifications including supply current, threshold accuracy, and propagation delay - ensuring reliable performance in harsh environments such as factory automation controllers and outdoor telemetry units. The 'I' suffix in the part number confirms this extended temperature grade.
Can the ICL7665SIBAZ-T monitor both overvoltage and undervoltage on the same supply rail?
Yes, the ICL7665SIBAZ-T is expressly designed for this dual-role function. Its two independent comparators allow SET1 to sense undervoltage (e.g., trip at 4.45V) and SET2 to sense overvoltage (e.g., trip at 5.55V) on a shared 5V rail. Application Figure 12 in the datasheet demonstrates this exact configuration, using external resistor dividers and wired-OR outputs to generate a single "POWER OK" signal - a core capability of the ICL7665SIBAZ-T.
How is hysteresis implemented on the ICL7665SIBAZ-T?
Hysteresis on the ICL7665SIBAZ-T is implemented externally using the HYST1 and HYST2 pins. Each connects to a P-channel open-drain output that sources current into the SET1/SET2 resistor divider network. When the comparator trips, the corresponding HYST pin pulls low (relative to V+), effectively shorting a resistor to shift the effective trip point - as shown in Figure 10A of the datasheet. This method allows precise, resistor-tuned hysteresis widths without internal fixed values.
What is the maximum sink current capability of the OUT1 and OUT2 pins on the ICL7665SIBAZ-T?
The OUT1 and OUT2 pins of the ICL7665SIBAZ-T can each sink up to 20mA continuously, as specified in the Absolute Maximum Ratings table. This is validated across the full -40°C to +85°C range and enables direct drive of LEDs, small relays, or MOSFET gates without external buffers. The datasheet also confirms 25mA absolute maximum rating, with saturation voltage remaining below 0.3V at 2mA load - confirming robust low-side switching capability.
Does the ICL7665SIBAZ-T require an external reference voltage?
No, the ICL7665SIBAZ-T includes an internal bandgap reference generating a stable 1.3V threshold voltage. This reference operates across the full 1.8V–16V supply range and exhibits only 100ppm/°C temperature drift - eliminating the need for external references, trimming, or calibration. All trip point calculations (e.g., VTR1 = 1.3V × (R11+R21)/R11) derive directly from this internal reference, as defined in Table 1 of the datasheet.
ICL7665SIBAZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7665SIBAZ-T FAQ
1.How can I place an order for ICL7665SIBAZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SIBAZ-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 ICL7665SIBAZ-T reliable?
The price and inventory of ICL7665SIBAZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SIBAZ-T is usually 5 days.
3.What payment methods are accepted for ICL7665SIBAZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SIBAZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SIBAZ-T?
ICL7665SIBAZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SIBAZ-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 ICL7665SIBAZ-T?
For technical support, including ICL7665SIBAZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SIBAZ-T requirements.
6.How does Aetrix verify that ICL7665SIBAZ-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SIBAZ-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 ICL7665SIBAZ-T meets industry standards.
7.What is the process for return or replacement of ICL7665SIBAZ-T?
All ICL7665SIBAZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SIBAZ-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 ICL7665SIBAZ-T part is unused and in its original packaging.
Return procedure for ICL7665SIBAZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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