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Renesas ICL7665SACBAZA-T
- Part No.:
- ICL7665SACBAZA-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SACBAZA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,152
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Product details
Overview
ICL7665SACBAZA-T from Intersil is a dual CMOS micropower over/under voltage detector IC with individually programmable trip points and hysteresis, 1.3V internal bandgap reference, 3µA typical supply current, and operation from 1.6V to 16V supply. It delivers precise undervoltage and overvoltage monitoring in battery-powered instrumentation and portable computing systems.
For engineers reviewing the ICL7665SACBAZA-T datasheet, ICL7665SACBAZA-T pinout, ICL7665SACBAZA-T application, or ICL7665SACBAZA-T equivalent, key selection criteria include guaranteed 10µA max quiescent current over temperature, ±50mV VSET1–VSET2 mismatch, 100ppm/°C threshold tempco (ICL7665SA variant), open-drain N/P-channel outputs, and SOIC-8 Pb-free package compatibility with wave soldering.
Technical Context
The ICL7665SACBAZA-T integrates two independent comparators referencing a stable 1.3V bandgap source, enabling simultaneous high-accuracy overvoltage (OUT1/HYST1) and undervoltage (OUT2/HYST2) detection. Each detector's trip point and hysteresis are set externally via resistor dividers on SET1/SET2 and HYST1/HYST2 pins.
Its open-drain N-channel OUT1/OUT2 outputs sink up to 20mA, while open-drain P-channel HYST1/HYST2 outputs source up to –25mA - supporting flexible wired-OR logic, external pull-up/pull-down configurations, and direct interface with microcontroller reset inputs or power-OK signaling circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - supports single-cell Li-ion, multi-cell alkaline, and regulated 5V/12V rails without external regulators |
| Quiescent Current | ≤10µA max over full temperature range - enables >1-year battery life in low-duty-cycle fault-monitoring applications |
| Threshold Accuracy | ±2% for ICL7665S variant - ensures reliable trip-point repeatability across production batches and temperature |
| Temperature Coefficient | 200ppm/°C - limits threshold drift to <±26mV over –40°C to +85°C operating range |
| Output Sink/Source Capability | 20mA sink (OUT1/OUT2), –25mA source (HYST1/HYST2) - drives LEDs, MOSFET gates, or logic-level inputs directly |
| Input Leakage Current | ≤10nA at SET1/SET2 - permits use of high-value resistors (>10MΩ) for ultra-low-power voltage sensing networks |
| Propagation Delay | 55–90µs - provides deterministic response timing for power-fail warning and controlled shutdown sequencing |
Pinout & Package
ICL7665SACBAZA-T is housed in an 8-lead Pb-free SOIC package (JEDEC MS-012-AA, M8.15 drawing), 3.9mm × 4.9mm body, 1.27mm lead pitch, compatible with standard surface-mount reflow and wave soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | N-channel open-drain output | Sinks current when VSET1 exceeds 1.3V - used for overvoltage alarm or power-OK assertion |
| HYST1 | P-channel open-drain output | Sources current when VSET1 exceeds 1.3V - enables hysteresis feedback to SET1 divider |
| SET1 | Non-inverting input for comparator 1 | High-impedance node (≤10nA leakage) - connects to resistor divider for overvoltage trip setting |
| GND | Analog ground reference | Return path for internal bandgap and comparator circuitry - must be low-noise and star-connected |
| V+ | Positive supply rail | Accepts 1.6V–16V - powers internal reference, comparators, and output drivers |
| OUT2 | N-channel open-drain output | Sinks current when VSET2 falls below 1.3V - used for undervoltage warning or system reset |
| SET2 | Non-inverting input for comparator 2 | High-impedance node (≤10nA leakage) - connects to resistor divider for undervoltage trip setting |
| HYST2 | P-channel open-drain output | Sources current when VSET2 falls below 1.3V - enables hysteresis feedback to SET2 divider |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage and undervoltage monitoring on same supply rail without external logic |
| Individually programmable hysteresis | Eliminates output chatter near trip thresholds using HYST1/HYST2 feedback paths - no external Schmitt triggers needed |
| 1.3V precision bandgap reference | Stable internal reference enables accurate trip-point setting across 1.6V–16V supply range and –40°C to +85°C |
| Ultra-low quiescent current | 3µA typical operation allows continuous monitoring in coin-cell–powered devices for multi-year service life |
| Pb-free SOIC-8 package | RoHS-compliant M8.15 outline supports automated assembly and meets IPC/JEDEC J-STD-020 reflow requirements |
Applications
| Single-Supply Fault Monitor | Portable Battery Management |
|---|---|
Use Scenario: Monitoring a +5V rail for overvoltage (>5.5V) and undervoltage (<4.5V) conditions in embedded controllers. IC Role / Device Role / Timing Role: Dual comparator generating POWER_OK signal via wired-OR outputs; hysteresis prevents false toggling during supply transients. Use Value: Eliminates need for discrete comparators, references, and hysteresis resistors - reduces BOM count by ≥7 components. | Use Scenario: Detecting low battery condition in handheld medical instruments powered by two AA cells (2.0V–3.2V). IC Role / Device Role / Timing Role: OUT2 asserts low-battery warning at 2.4V; OUT1 triggers graceful shutdown at 2.0V - sequenced via separate resistor dividers. Use Value: Prevents lithium battery over-discharge damage while extending usable runtime through staged alerting. |
| Power-Fail Warning System | AC Brownout Detection |
Use Scenario: Providing early warning before unregulated DC input drops below 7.3V, causing 5V regulator failure. IC Role / Device Role / Timing Role: OUT1 monitors raw DC input; OUT2 disables memory write-enable when 5V rail sags - coordinated reset timing. Use Value: Guarantees data integrity in battery-backed SRAM during brownout events with ≤90µs detection latency. | Use Scenario: Detecting AC line undervoltage on transformer secondary in industrial power supplies. IC Role / Device Role / Timing Role: OUT1 discharges capacitor each half-cycle; OUT2 triggers alarm when capacitor charges to 1.3V due to missing discharge pulses. Use Value: Enables robust 16.7ms cycle-based detection without microcontroller intervention or timing-critical firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar over/under voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+T | Fixed 2.93V reset threshold; no external trip-point programming; 1.6µA typical IQ | Single-threshold reset only - cannot implement independent over/under detection | Select when only basic power-on reset is required and board space is constrained |
| TLV809E29DBZR | Single-channel 2.93V supervisor; push-pull output; 0.5µA IQ; SOT-23-3 package | No hysteresis control or dual-detector capability - requires external components for over/under functionality | Choose for ultra-low-power single-rail monitoring where dual detection is unnecessary |
Compared with MAX6326US29D3+T and TLV809E29DBZR, the ICL7665SACBAZA-T uniquely supports fully independent, resistor-programmable overvoltage and undervoltage thresholds with integrated hysteresis - eliminating external comparators and reducing design complexity for dual-fault monitoring.
Availability
ICL7665SACBAZA-T is available at Aetrix Electronics and suitable for portable instrumentation, battery-operated systems, and power supply fault monitoring requiring stable component supply and long-term manufacturability.
Supply support for ICL7665SACBAZA-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 leading provider of precision analog and power management solutions, now part of Renesas Electronics, with deep expertise in low-power sensor interfaces and supervisory ICs.
The ICL7665S product line was designed specifically for micropower voltage supervision in portable and battery-critical systems - emphasizing ultra-low IQ, wide supply range, and field-programmable trip accuracy without external references.
FAQ
What is the maximum supply voltage rating for the ICL7665SACBAZA-T?
The ICL7665SACBAZA-T has an absolute maximum supply voltage of +18V, with recommended operating range from 1.6V to 16V. Exceeding +18V risks permanent damage due to SCR latchup inherent in its junction-isolated CMOS process. The device is rated for continuous operation up to 16V, making it suitable for 12V automotive auxiliary rails and multi-cell battery stacks.
How does the ICL7665SACBAZA-T achieve hysteresis without external components?
The ICL7665SACBAZA-T achieves programmable hysteresis using its dedicated HYST1 and HYST2 open-drain P-channel outputs. When a detector trips, the corresponding HYST pin pulls low (relative to V+), effectively shorting an external resistor in the SET1 or SET2 voltage divider - shifting the effective trip point. This eliminates need for external Schmitt triggers or feedback resistors across comparator inputs.
Can the ICL7665SACBAZA-T monitor negative supply voltages?
No, the ICL7665SACBAZA-T is not designed for direct negative-supply monitoring. Its SET1 and SET2 inputs operate referenced to GND, with valid input range from GND–0.3V to V++0.3V. To monitor negative rails, external level-shifting circuitry (e.g., resistive divider + bias network) is required to translate the negative voltage into the 0V–V+ range acceptable at SET pins.
What is the guaranteed minimum output sink current for OUT1 and OUT2 on the ICL7665SACBAZA-T?
The ICL7665SACBAZA-T guarantees a minimum output sink current of 20mA for both OUT1 and OUT2 when V+ ≥ 2V and VOUT ≤ 0.5V. This is confirmed in the Absolute Maximum Ratings table (25mA max sink) and Electrical Specifications (VOUT1/VOUT2 saturation voltage tested at 2mA and 20mA loads). The output remains functional down to 0.06V saturation at 15V supply.
Is the ICL7665SACBAZA-T pin-compatible with the legacy ICL7665B series?
Yes, the ICL7665SACBAZA-T is a direct replacement for the industry-standard ICL7665B in SOIC-8 packaging, with identical pinout, footprint, and electrical interface. Key improvements include wider operating voltage range (1.6V min vs. 2.0V), improved threshold accuracy (±2% vs. ±3%), lower temperature coefficient (200ppm/°C vs. 300ppm/°C), and guaranteed 10µA max supply current over temperature.
ICL7665SACBAZA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for ICL7665SACBAZA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SACBAZA-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 ICL7665SACBAZA-T reliable?
The price and inventory of ICL7665SACBAZA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SACBAZA-T is usually 5 days.
3.What payment methods are accepted for ICL7665SACBAZA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SACBAZA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SACBAZA-T?
ICL7665SACBAZA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SACBAZA-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 ICL7665SACBAZA-T?
For technical support, including ICL7665SACBAZA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SACBAZA-T requirements.
6.How does Aetrix verify that ICL7665SACBAZA-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SACBAZA-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 ICL7665SACBAZA-T meets industry standards.
7.What is the process for return or replacement of ICL7665SACBAZA-T?
All ICL7665SACBAZA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SACBAZA-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 ICL7665SACBAZA-T part is unused and in its original packaging.
Return procedure for ICL7665SACBAZA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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