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Renesas ICL7665SIBAZA
- Part No.:
- ICL7665SIBAZA
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SIBAZA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:835
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Product details
Overview
ICL7665SIBAZA from Intersil is a dual CMOS micropower over/under voltage detector IC with individually programmable trip points and hysteresis, 1.3V internal bandgap reference, ±50mV VSET1–VSET2 mismatch, and guaranteed ≤10µA max supply current across –40°C to +85°C. It operates from 1.6V to 16V and sinks up to 20mA per output, used for battery low-voltage warning and power-rail fault monitoring in portable instrumentation.
For engineers reviewing the ICL7665SIBAZA datasheet, ICL7665SIBAZA pinout, ICL7665SIBAZA application, or ICL7665SIBAZA equivalent, key selection criteria include its industrial-temperature SOIC-8 package, dual independent comparator architecture with open-drain N-channel OUT and open-drain P-channel HYST outputs, 100ppm/°C threshold temperature coefficient, and resistor-programmable upper/lower trip voltages without external reference.
Technical Context
The ICL7665SIBAZA integrates two independent high-impedance comparators referencing a precision 1.3V bandgap source. Each comparator drives separate open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs, enabling flexible hysteresis configuration via external resistors on SET and HYST pins.
Its design supports both overvoltage and undervoltage detection on the same supply rail using distinct resistor networks. The device guarantees operation across –40°C to +85°C with ≤10µA maximum quiescent current and maintains <±50mV VSET1–VSET2 differential accuracy under full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - enables direct monitoring of Li-ion, 3.3V, 5V, and 12V rails without level-shifting. |
| Max Supply Current | 10µA at –40°C to +85°C - ensures multi-year battery life in always-on portable systems. |
| Internal Reference | 1.3V bandgap - provides stable trip threshold independent of supply voltage variation. |
| Threshold Tempco | 100ppm/°C - limits trip point drift to ±0.13V over –40°C to +85°C, critical for precision fault detection. |
| Output Sink/Source | 20mA sink (OUT), 25mA source (HYST) - directly drives LEDs, MOSFET gates, or logic inputs without buffers. |
| VSET Input Leakage | 10nA max - permits use of high-value resistor dividers (e.g., 10MΩ) without significant error. |
| Delay Time | 55–90µs - supports fast response to supply transients while avoiding noise-induced false triggers. |
Pinout & Package
ICL7665SIBAZA is housed in an 8-lead narrow-body SOIC (M8.15) RoHS-compliant package with 1.27mm lead pitch, 3.9mm body width, and 4.9mm body length. Thermal resistance θJA = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT1 | Open-drain N-channel output | Sinks current when VSET1 < 1.3V; used for undervoltage alert or shutdown control. |
| 2 HYST1 | Open-drain P-channel output | Sources current when VSET1 > 1.3V; enables resistor-programmed hysteresis for OUT1. |
| 3 SET1 | Comparator 1 input | High-impedance node (≤10nA leakage) for resistor-divider connection to monitored voltage. |
| 4 GND | Analog ground reference | Return path for internal bandgap and comparator circuitry; must be low-impedance. |
| 5 V+ | Positive supply input | Accepts 1.6V–16V; powers internal reference, comparators, and output drivers. |
| 6 OUT2 | Open-drain N-channel output | Sinks current when VSET2 < 1.3V; used for second fault channel or low-battery warning. |
| 7 SET2 | Comparator 2 input | Independent high-Z input for separate voltage monitoring or overvoltage detection. |
| 8 HYST2 | Open-drain P-channel output | Sources current when VSET2 > 1.3V; configures hysteresis for OUT2 independently. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detectors | Enables simultaneous overvoltage and undervoltage monitoring on one rail with no shared timing or bias constraints. |
| Resistor-programmable trip points | Eliminates need for external references or precision op-amps; trip voltages set by standard resistor ratios. |
| Open-drain N/P outputs | Permits wired-OR logic, level translation, and bidirectional hysteresis control without additional components. |
| Guaranteed 10µA max I+ | Validated across full –40°C to +85°C range, enabling reliable battery-life estimation in industrial deployments. |
| 100ppm/°C tempco | Reduces thermal drift impact on trip accuracy-critical for applications operating across wide ambient ranges. |
Applications
| Battery Low-Voltage Warning | Single-Supply Power OK Monitor |
|---|---|
Use Scenario: Detecting when a Li-ion battery voltage drops below 3.0V during discharge in handheld medical devices. IC Role / Device Role / Timing Role: ICL7665SIBAZA compares divided battery voltage against 1.3V reference using SET2; OUT2 asserts low to illuminate LED warning. Use Value: 10nA input leakage allows 10MΩ divider network, minimizing standby current drain while maintaining ±50mV trip accuracy. |
Use Scenario: Generating a "POWER OK" signal for microcontroller reset in a 5V-powered data logger. IC Role / Device Role / Timing Role: ICL7665SIBAZA monitors 5V rail with hysteresis: OUT1 (undervoltage) and OUT2 (overvoltage) wired-OR'd to pull-down a 10kΩ pull-up. Use Value: Dual independent comparators eliminate need for two discrete supervisors, reducing BOM count and PCB area by 30%. |
| AC Brownout Detection | Multi-Rail System Fault Monitoring |
Use Scenario: Detecting AC line sags below 90VAC in industrial power supplies using secondary-side rectified voltage. IC Role / Device Role / Timing Role: ICL7665SIBAZA's SET1 input monitors filtered DC from transformer secondary; HYST1 configures hysteresis to prevent chatter during marginal conditions. Use Value: 55µs propagation delay ensures response within one AC half-cycle (8.3ms), meeting IEC 61000-4-11 immunity requirements. |
Use Scenario: Simultaneous monitoring of +12V, +5V, and –5V rails in test equipment to flag any rail deviation before system damage. IC Role / Device Role / Timing Role: ICL7665SIBAZA uses SET1/HYST1 for +12V overvoltage and SET2/HYST2 for –5V undervoltage detection. Use Value: Independent programming of each detector allows optimized resistor networks per rail, achieving ±1% trip accuracy across three different voltage domains. |
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 360nA quiescent current; no internal reference or hysteresis control. | Requires external 1.2V reference and hysteresis resistors; lacks dual independent channels. | Select TLV7032IDR only when ultra-low IQ (<1µA) is mandatory and external component count is acceptable. |
| MAX6326UT46D3+T | Dedicated 4.63V reset IC with fixed threshold, 1.6V to 5.5V supply, and 20µs reset timeout; no programmability. | Provides factory-trimmed accuracy (±0.5%) but cannot monitor custom voltages or support over/under detection. | Choose MAX6326UT46D3+T for simple power-on reset where fixed 4.63V threshold suffices and programmability is unnecessary. |
Compared with TLV7032IDR and MAX6326UT46D3+T, the ICL7665SIBAZA uniquely delivers dual independently programmable over/under detection in one SOIC-8 package with guaranteed 10µA max IQ across industrial temperature range-enabling compact, flexible, and battery-optimized supervision without external references or timing components.
Availability
ICL7665SIBAZA is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and industrial power monitoring requiring stable component supply and long-term lifecycle support.
Supply support for ICL7665SIBAZA 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 solutions provider, now part of Renesas Electronics, with ISO9001-certified manufacturing and global distribution.
The ICL7665SIBAZA belongs to Intersil's micropower supervisor IC family, designed specifically for battery-critical applications demanding ultra-low IQ, wide supply range, and field-programmable fault thresholds without external references.
FAQ
What is the operating temperature range for the ICL7665SIBAZA?
The ICL7665SIBAZA is rated for –40°C to +85°C industrial temperature operation. All electrical specifications-including 10µA maximum supply current, 1.3V reference accuracy, and 100ppm/°C temperature coefficient-are guaranteed across this full range, making it suitable for harsh-environment deployments like outdoor instrumentation and automotive auxiliary systems.
How do I configure hysteresis on the ICL7665SIBAZA?
Hysteresis is configured per channel using the HYST1 or HYST2 pin in conjunction with external resistors. For example, connecting HYST1 to the SET1 node through a resistor creates positive feedback that raises the rising-threshold and lowers the falling-threshold. Figure 10A in the FN3182 datasheet shows the exact resistor network topology and equations for calculating VU1 and VL1 trip points.
Can the ICL7665SIBAZA monitor negative supply voltages?
Yes-the ICL7665SIBAZA can monitor negative rails by referencing SET1 or SET2 to GND and applying the negative voltage through a resistor divider to shift it into the 0V–V+ input range. The datasheet's Figure 13 demonstrates multi-supply monitoring including –5V and –15V rails, confirming compatibility with split-supply systems when properly biased.
What is the minimum supply voltage required for ICL7665SIBAZA operation?
The ICL7665SIBAZA operates down to 1.6V at +25°C and 1.8V across the full –40°C to +85°C range. This enables direct monitoring of single-cell LiFePO₄ (2.5–3.65V) and alkaline (0.9–1.6V per cell) batteries in series configurations where the total pack voltage remains ≥1.8V at end-of-discharge.
Does the ICL7665SIBAZA require external capacitors for stability?
No external compensation capacitors are required for basic operation. However, a 0.05µF ceramic capacitor between V+ and GND is recommended in battery-powered applications to limit supply voltage slew rate and prevent SCR latchup, as specified in the "Precautions" section of the FN3182 datasheet. A 1µF capacitor on SETx pins suppresses false triggers during V+ transients.
ICL7665SIBAZA 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7665SIBAZA FAQ
1.How can I place an order for ICL7665SIBAZA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SIBAZA 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 ICL7665SIBAZA reliable?
The price and inventory of ICL7665SIBAZA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SIBAZA is usually 5 days.
3.What payment methods are accepted for ICL7665SIBAZA?
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4.How is shipping managed for ICL7665SIBAZA?
ICL7665SIBAZA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SIBAZA 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 ICL7665SIBAZA?
For technical support, including ICL7665SIBAZA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SIBAZA requirements.
6.How does Aetrix verify that ICL7665SIBAZA is sourced from the original manufacturer or authorized distributors?
All ICL7665SIBAZA 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 ICL7665SIBAZA meets industry standards.
7.What is the process for return or replacement of ICL7665SIBAZA?
All ICL7665SIBAZA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SIBAZA, 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 ICL7665SIBAZA part is unused and in its original packaging.
Return procedure for ICL7665SIBAZA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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