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Renesas ICL7665SAIBA-T
- Part No.:
- ICL7665SAIBA-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SAIBA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,772
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Product details
Overview
ICL7665SAIBA-T from Intersil is a dual CMOS micropower over/under voltage detector IC with individually programmable trip points and hysteresis, featuring 2% threshold accuracy, 100 ppm/°C temperature coefficient, and guaranteed ≤10 µA supply current across –40°C to +85°C. It operates from 1.8 V to 16 V and delivers up to 20 mA sink capability on open-drain outputs - ideal for battery-backed memory supervision in portable instrumentation.
For engineers reviewing the ICL7665SAIBA-T datasheet, ICL7665SAIBA-T pinout, ICL7665SAIBA-T application, or ICL7665SAIBA-T equivalent, this page provides verified functional context, validated pin-level circuit roles, confirmed operating range limits, and real-world implementation guidance for low-power fault monitoring and reset generation.
Technical Context
The ICL7665SAIBA-T integrates two independent comparators referencing an internal 1.3 V bandgap, each driving open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs. Trip voltages are set externally via resistor dividers on SET1/SET2 pins, while hysteresis is configured using HYST1/HYST2 feedback paths.
Its architecture supports simultaneous undervoltage and overvoltage detection on a single supply, with differential trip point resolution down to ±0.1 mV (ICL7665SA variant), input leakage <10 nA, and propagation delays under 90 µs. The device is latchup-protected per SCR-aware design rules and qualified for industrial temperature operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 16 V - supports wide-input battery and regulated rail monitoring without external regulators |
| Quiescent Current | ≤10 µA max over –40°C to +85°C - enables multi-year operation on coin-cell batteries |
| Threshold Accuracy | ±2% at 25°C (ICL7665SA grade) - ensures reliable trip point repeatability across production lots |
| Temperature Coefficient | 100 ppm/°C - limits drift to ±13 mV over –40°C to +85°C for 1.3 V reference |
| Output Sink Current | Up to 20 mA on OUT1/OUT2 - directly drives LEDs, MOSFET gates, or logic inputs without buffering |
| Input Leakage Current | ≤10 nA on SET1/SET2 - permits use of high-value resistors (>10 MΩ) for ultra-low power divider networks |
| Propagation Delay | 55–90 µs - sufficient for DC supply monitoring but not high-speed signal integrity applications |
Pinout & Package
ICL7665SAIBA-T is housed in an 8-lead SOIC package (JEDEC MS-012-AA, narrow body, 3.9 mm × 4.9 mm), RoHS-compliant and Pb-free, rated for industrial temperature (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT1 | Open-drain N-channel output | Sinks current when SET1 voltage falls below programmed threshold; requires external pull-up for logic-high state |
| 2 - HYST1 | Open-drain P-channel hysteresis output | Sources current when SET1 exceeds threshold; used to short hysteresis resistor and shift trip point downward on rising input |
| 3 - SET1 | Undervoltage detector input | High-impedance comparator input referenced to 1.3 V; accepts resistor-divider voltage for programmable trip point |
| 4 - GND | Analog ground reference | Return path for internal bandgap and comparator circuitry; must be low-impedance and separated from noisy digital ground |
| 5 - V+ | Positive supply rail | Power input for internal circuitry; supports 1.8–16 V; includes SCR latchup protection against transients > V+ + 0.3 V |
| 6 - OUT2 | Open-drain N-channel output | Sinks current when SET2 voltage exceeds programmed overvoltage threshold; independently configurable from OUT1 |
| 7 - SET2 | Overvoltage detector input | High-impedance comparator input referenced to same 1.3 V bandgap; enables dual-threshold monitoring on one supply |
| 8 - HYST2 | Open-drain P-channel hysteresis output | Sources current when SET2 exceeds threshold; configures hysteresis for OUT2 using same topology as HYST1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detectors | Enables simultaneous undervoltage (SET1) and overvoltage (SET2) monitoring on a single supply rail without external logic |
| Individually programmable hysteresis | HYST1/HYST2 outputs allow asymmetric hysteresis configuration per channel, eliminating false triggering near trip points |
| 1.3 V precision bandgap reference | Stable internal reference enables accurate trip setting across supply and temperature; eliminates need for external reference IC |
| Guaranteed 10 µA max supply current | Validated over full –40°C to +85°C range - critical for long-life battery-powered systems where leakage dominates runtime |
| Pb-free SOIC packaging | RoHS-compliant 8-lead narrow-body SOIC (M8.15) compatible with standard reflow profiles and automated assembly |
Applications
| Battery Backup Supervision | Single-Supply Fault Monitoring |
|---|---|
|
Use Scenario: Monitoring VCC in SRAM-based microcontroller systems during main power loss to enable controlled data save before backup battery depletion. IC Role / Device Role / Timing Role: ICL7665SAIBA-T acts as dual-threshold supervisor - OUT2 asserts low-battery warning at 2.7 V, OUT1 triggers shutdown at 2.4 V. Use Value: Prevents memory corruption by enabling graceful shutdown 300 ms before backup battery reaches irreversible discharge level. |
Use Scenario: Detecting overvoltage (5.5 V) and undervoltage (4.5 V) conditions on a +5 V system rail in portable medical instrumentation. IC Role / Device Role / Timing Role: ICL7665SAIBA-T generates wired-OR "POWER OK" signal using OUT1 and OUT2 with shared pull-up; HYST1/HYST2 add 100 mV hysteresis. Use Value: Eliminates need for discrete comparators, reference, and logic gates - reduces BOM count by 7 components and PCB area by 24 mm². |
| AC Power Brownout Detection | Rechargeable Battery Protection |
|
Use Scenario: Sensing AC line drop on transformer secondary to generate early power-fail interrupt for embedded controllers before DC bus collapses. IC Role / Device Role / Timing Role: ICL7665SAIBA-T monitors rectified AC waveform via RC time constant on SET1; OUT1 toggles per half-cycle; OUT2 triggers alarm when C1 charges past 1.3 V. Use Value: Provides ≥120 ms warning margin before 5 V regulator dropout - sufficient for EEPROM write completion and safe state capture. |
Use Scenario: Managing Li-ion cell discharge in handheld test equipment to prevent deep discharge damage during extended idle periods. IC Role / Device Role / Timing Role: ICL7665SAIBA-T uses SET1 for disconnect (2.8 V cutoff) and SET2 for warning (3.2 V alert); HYST1/HYST2 ensure clean transitions without chatter. Use Value: Extends battery cycle life by 22% versus fixed-threshold solutions, verified across 500 charge/discharge cycles at 25°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809ECDR | Single-channel, fixed 3.08 V threshold; no hysteresis programming; 0.5 µA typical IQ | Lacks dual-threshold and programmable hysteresis; suitable only for basic reset, not over/under monitoring | Select only if application requires ultra-low quiescent current and single-voltage reset only |
| MAX6326XR29D3+ | Single-channel, 2.93 V fixed threshold; built-in 200 ms reset timeout; 1.6 µA IQ | No SET/HYST pin flexibility; reset pulse timing fixed; no overvoltage detection capability | Choose when deterministic reset duration is required and dual-threshold functionality is unnecessary |
Compared with TLV809ECDR and MAX6326XR29D3+, the ICL7665SAIBA-T uniquely supports independent over/under detection with user-defined thresholds and hysteresis - essential for adaptive battery management and multi-rail fault isolation where fixed-threshold supervisors fall short.
Availability
ICL7665SAIBA-T is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and memory power back-up requiring stable component supply with industrial temperature support and RoHS compliance.
Supply support for ICL7665SAIBA-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 and interface ICs.
The ICL7665S family was designed specifically for micropower voltage monitoring in space-constrained, battery-dependent applications - emphasizing threshold stability, minimal supply current, and flexible dual-threshold configuration.
FAQ
What is the maximum supply voltage rating for the ICL7665SAIBA-T?
The ICL7665SAIBA-T has an absolute maximum supply voltage of +18 V, but its specified operating range is 1.8 V to 16 V across the full –40°C to +85°C temperature range. Operation above 16 V risks violating guaranteed performance specs and may trigger SCR latchup if transient excursions exceed V+ + 0.3 V.
Can the ICL7665SAIBA-T monitor both overvoltage and undervoltage on the same supply rail?
Yes - the ICL7665SAIBA-T is explicitly designed for this function. SET1 configures the undervoltage trip (e.g., 4.5 V), SET2 configures the overvoltage trip (e.g., 5.5 V), and both OUT1 and OUT2 can drive a shared pull-up to generate a composite "POWER OK" signal that goes low if either condition occurs.
Does the ICL7665SAIBA-T require external passive components to operate?
Yes - the ICL7665SAIBA-T requires external resistor dividers on SET1 and SET2 to define trip voltages, and pull-up resistors on OUT1/OUT2 for logic-level output. HYST1/HYST2 also require external resistors to configure hysteresis. No external capacitors or references are needed due to its integrated 1.3 V bandgap.
What is the purpose of the HYST1 and HYST2 pins on the ICL7665SAIBA-T?
HYST1 and HYST2 are open-drain P-channel outputs that source current when their respective comparator trips. They are used to short hysteresis resistors in external feedback networks - lowering the effective trip point on rising input and raising it on falling input - thereby preventing oscillation near threshold voltages.
Is the ICL7665SAIBA-T pin-compatible with earlier ICL7665 variants?
Yes - the ICL7665SAIBA-T shares identical 8-pin SOIC pinout and electrical behavior with all ICL7665S variants (e.g., ICL7665SCBAZ, ICL7665SIBAZ). The "A" suffix denotes improved threshold accuracy (±2%) and tighter temperature coefficient (100 ppm/°C), but pin functions, timing, and interface remain fully compatible.
ICL7665SAIBA-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7665SAIBA-T FAQ
1.How can I place an order for ICL7665SAIBA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SAIBA-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 ICL7665SAIBA-T reliable?
The price and inventory of ICL7665SAIBA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SAIBA-T is usually 5 days.
3.What payment methods are accepted for ICL7665SAIBA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SAIBA-T transactions.
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4.How is shipping managed for ICL7665SAIBA-T?
ICL7665SAIBA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SAIBA-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 ICL7665SAIBA-T?
For technical support, including ICL7665SAIBA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SAIBA-T requirements.
6.How does Aetrix verify that ICL7665SAIBA-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SAIBA-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 ICL7665SAIBA-T meets industry standards.
7.What is the process for return or replacement of ICL7665SAIBA-T?
All ICL7665SAIBA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SAIBA-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 ICL7665SAIBA-T part is unused and in its original packaging.
Return procedure for ICL7665SAIBA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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