My Inquiry
My Account
Renesas ICL7665SIBA-T
- Part No.:
- ICL7665SIBA-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SIBA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7665SIBA-T from Intersil is a dual CMOS micropower over/under voltage detector IC with individually programmable trip points, 1.3V internal bandgap reference, ±5mV trip voltage difference, and guaranteed 10µA max quiescent current across -40°C to +85°C. It enables battery-operated system fault monitoring in portable instrumentation and memory backup circuits.
For engineers reviewing the ICL7665SIBA-T datasheet, ICL7665SIBA-T pinout, ICL7665SIBA-T application, or ICL7665SIBA-T equivalent, this page delivers verified technical context, exact SOIC-8 package mapping, real-world hysteresis implementation guidance, and validated alternative options for voltage supervision design.
Technical Context
The ICL7665SIBA-T integrates two independent comparators sharing a precision 1.3V bandgap reference, 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, with hysteresis controlled by HYST1/HYST2 feedback paths.
It operates from 1.6V to 16V supply, supports 100ppm/°C threshold temperature coefficient (ICL7665S grade), and delivers up to 20mA sink current on OUT1/OUT2 while maintaining sub-0.5V saturation voltage at 2mA load. Input leakage is ≤10nA, enabling high-impedance sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - supports single-cell Li-ion to multi-rail industrial supplies without external regulation |
| Quiescent Current | ≤10µA max over -40°C to +85°C - enables >10-year battery life in low-power monitoring applications |
| Reference Voltage | 1.30V ±0.10V - stable internal bandgap reference eliminates need for external precision voltage source |
| Output Sink Current | Up to 20mA on OUT1/OUT2 - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages |
| Threshold Accuracy | ±50mV difference between VSET1 and VSET2 - allows precise separation of overvoltage and undervoltage detection windows |
| Temperature Coefficient | 200ppm/°C - ensures <±15mV drift over full industrial temperature range for reliable trip point stability |
| Input Leakage | ≤10nA at SET1/SET2 - permits use of MΩ-range resistor dividers without significant error contribution |
Pinout & Package
ICL7665SIBA-T is housed in 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 when VSET1 > 1.3V; shorts external hysteresis resistor to adjust rising/falling thresholds |
| 3 (SET1) | Voltage sense input for comparator 1 | High-impedance node (≤10nA leakage) for resistor-divider-based trip point programming |
| 4 (GND) | Analog ground reference | Return path for internal bandgap and comparator circuitry; must be low-noise and separate from power ground if possible |
| 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 independent fault indicator or reset signal |
| 7 (SET2) | Voltage sense input for comparator 2 | Independent high-Z input for separate overvoltage or secondary supply monitoring |
| 8 (HYST2) | Open-drain P-channel hysteresis control | Sources current when VSET2 > 1.3V; enables independent hysteresis tuning for comparator 2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage and undervoltage monitoring on same IC without cross-coupling or shared timing constraints |
| Individually programmable hysteresis | Separate HYST1/HYST2 pins allow asymmetric hysteresis tuning per channel to prevent chatter near trip points |
| 100% tested at 2V supply | Guarantees functionality down to ultra-low battery voltages, critical for end-of-life detection in coin-cell systems |
| Open-drain N/P-channel outputs | Supports wired-OR logic, level shifting, and direct interface to diverse loads (LEDs, microcontroller inputs, MOSFET gates) |
| Pb-free SOIC-8 packaging | RoHS-compliant M8.15 outline enables reflow soldering and meets global environmental compliance requirements |
Applications
| Portable Instrumentation Power Supervision | Battery Backup Memory Protection |
|---|---|
Use Scenario: Monitoring main supply rail in handheld multimeters or data loggers during battery discharge cycles. IC Role / Device Role / Timing Role: Dual comparator supervises both upper (overvoltage) and lower (undervoltage) limits using SET1/SET2 resistive dividers; OUT1 triggers shutdown below 3.0V, OUT2 warns at 3.3V. Use Value: Prevents measurement corruption and EEPROM write errors by asserting reset before supply collapse, leveraging 10µA quiescent current to extend operational time. |
Use Scenario: Ensuring safe write-enable control for SRAM or FRAM during brownout conditions in medical devices. IC Role / Device Role / Timing Role: OUT2 drives write-protect line low when VCC drops below 4.75V; HYST2 adds 50mV hysteresis to avoid spurious toggling during transient dips. Use Value: Eliminates need for discrete supervisor ICs or complex RC timing networks-single ICL7665SIBA-T replaces dual independent monitors with matched reference accuracy. |
| AC Power Fail Detection | Multi-Rail System Fault Monitoring |
Use Scenario: Detecting loss of AC mains in UPS or smart meter designs using rectified transformer secondary voltage. IC Role / Device Role / Timing Role: SET1 senses decaying DC bus; OUT1 discharges timing capacitor each half-cycle; OUT2 asserts fail signal when capacitor voltage exceeds 1.3V after missing cycles. Use Value: Provides ≥100ms warning margin before backup battery engagement, enabled by predictable 1.3V reference and sub-10µA supply current during standby. |
Use Scenario: Simultaneous monitoring of +5V, +12V, and -5V rails in industrial PLC I/O modules. IC Role / Device Role / Timing Role: SET1 monitors +5V via resistor network; SET2 monitors combined +12V/-5V string; OUT1 flags +5V fault, OUT2 flags dual-rail failure. Use Value: Reduces BOM count by consolidating three discrete supervisors into one IC with independent trip programming and no shared reference drift. |
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 pins | Requires external 1.2V reference and discrete hysteresis resistors; lacks dual independent channels | Choose when ultra-low IQ (<1µA) is mandatory and only one detection window is needed |
| MAX6326UT46D3+ | Dedicated 4.63V reset IC with 1.6µA IQ, fixed threshold, and push-pull output; no programmability | Provides factory-trimmed accuracy (±0.5%) but no adjustable trip points or dual-window capability | Choose for simple power-on reset where fixed 4.63V threshold suffices and PCB space is constrained |
Compared with TLV7032IDR and MAX6326UT46D3+, the ICL7665SIBA-T uniquely delivers dual independently programmable thresholds, integrated hysteresis control per channel, and guaranteed 10µA max supply current over industrial temperature range-enabling compact, flexible, and battery-optimized supervision without external references or trimming.
Availability
ICL7665SIBA-T is available at Aetrix Electronics and suitable for portable instrumentation, battery backup memory protection, and AC power fail detection requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ICL7665SIBA-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 provider of precision analog and power management ICs, now part of Renesas Electronics, with expertise in low-power supervision, voltage references, and battery management solutions.
The ICL7665S product line was designed specifically for micropower over/under voltage detection in battery-constrained systems, emphasizing ultra-low IQ, wide supply range, and field-programmable trip points without external components.
FAQ
What is the operating temperature range for the ICL7665SIBA-T?
The ICL7665SIBA-T is rated for operation from -40°C to +85°C, with all critical parameters-including supply current, trip voltage accuracy, and output saturation-guaranteed across this full industrial temperature range per the FN3182 Rev 10.00 datasheet.
Does the ICL7665SIBA-T require external components to function?
Yes, the ICL7665SIBA-T requires external resistor dividers on SET1 and SET2 to define trip voltages, and optional hysteresis resistors connected to HYST1/HYST2. No external reference or bypass capacitors are mandatory, though a 0.05µF V+/GND capacitor is recommended for fast-rising battery supplies to prevent latch-up.
Can the ICL7665SIBA-T monitor two different supply rails simultaneously?
Yes, the ICL7665SIBA-T can monitor two independent voltage rails: SET1 and SET2 accept separate input signals, allowing one channel to supervise a +5V rail and the other a +12V or battery rail. The internal 1.3V reference remains stable regardless of V+ within 1.6V–16V, enabling accurate ratio-based detection across rails.
What is the maximum sink current capability of the OUT1 and OUT2 pins on the ICL7665SIBA-T?
The OUT1 and OUT2 pins each support up to 20mA sink current with ≤0.5V saturation voltage at 2mA load (V+ = 2V). This allows direct driving of LEDs, small relays, or microcontroller interrupt inputs without additional buffering stages.
How does hysteresis work on the ICL7665SIBA-T, and how is it configured?
Hysteresis on the ICL7665SIBA-T is implemented via HYST1 and HYST2 pins, which are open-drain P-channel outputs. When the corresponding SETx voltage exceeds 1.3V, the HYSTx pin pulls low (sources current), shorting an external resistor to adjust the effective trip point for rising vs. falling inputs-enabling clean, chatter-free switching in noisy environments.
ICL7665SIBA-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
ICL7665SIBA-T FAQ
1.How can I place an order for ICL7665SIBA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SIBA-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 ICL7665SIBA-T reliable?
The price and inventory of ICL7665SIBA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SIBA-T is usually 5 days.
3.What payment methods are accepted for ICL7665SIBA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SIBA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SIBA-T?
ICL7665SIBA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SIBA-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 ICL7665SIBA-T?
For technical support, including ICL7665SIBA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SIBA-T requirements.
6.How does Aetrix verify that ICL7665SIBA-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SIBA-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 ICL7665SIBA-T meets industry standards.
7.What is the process for return or replacement of ICL7665SIBA-T?
All ICL7665SIBA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SIBA-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 ICL7665SIBA-T part is unused and in its original packaging.
Return procedure for ICL7665SIBA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7665SIBA-T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
