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Renesas ICL7665SIBA
- Part No.:
- ICL7665SIBA
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SIBA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,987
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Product details
Overview
ICL7665SIBA from Intersil is a dual CMOS micropower over/under voltage detector with individually programmable trip points and hysteresis, operating from 1.8V to 16V supply, consuming ≤10µA max quiescent current, featuring ±5mV trip voltage difference between channels, and used for battery low-voltage warning and power-rail fault monitoring in portable instrumentation.
For engineers reviewing the ICL7665SIBA datasheet, ICL7665SIBA pinout, ICL7665SIBA application, or ICL7665SIBA equivalent, this page delivers verified technical context, exact SOIC-8 package mapping, confirmed dual-comparator architecture with internal 1.3V bandgap reference, real-world hysteresis implementation guidance, and two validated alternative parts for voltage-monitoring designs requiring industrial temperature range (-40°C to +85°C) and Pb-free compliance.
Technical Context
The ICL7665SIBA 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 guarantees 100ppm/°C threshold temperature coefficient and ≤10µA supply current across -40°C to +85°C, supports output sinking up to 20mA, and maintains 1.3V input trip accuracy with 2% tolerance in the ICL7665SA variant-though ICL7665SIBA uses the base ICL7665S specification with 1.20–1.40V trip range and 200ppm/°C tempco.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 16V - Enables direct operation from single Li-ion, multi-cell alkaline, or regulated 3.3V/5V/12V rails without external regulators. |
| Max Quiescent Current | 10µA at -40°C to +85°C - Ensures >1-year battery life in coin-cell-powered pagers or memory backup circuits. |
| Input Trip Voltage (SET1/SET2) | 1.20V to 1.40V - Sets nominal 1.3V detection threshold; actual trip point determined by external resistor divider ratio. |
| Temperature Coefficient | 200ppm/°C - Predictable 0.26% drift over full industrial range; sufficient for non-critical brownout detection. |
| Output Sink Capability | 20mA per OUTx - Directly drives LEDs, small relays, or microcontroller interrupt inputs without buffer transistors. |
| Hysteresis Control | Dedicated HYST1/HYST2 open-drain P-channel outputs - Enables precise, resistor-programmable hysteresis to prevent chatter near trip points. |
| Package | 8-lead SOIC (M8.15), Pb-free - Standard surface-mount footprint compatible with automated assembly and IPC/JEDEC reflow profiles. |
Pinout & Package
ICL7665SIBA is housed in an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, Intersil drawing M8.15), 3.9mm × 4.9mm body, 1.27mm lead pitch, RoHS-compliant matte tin terminations.
| 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 | Sinks current to V+ when SET1 exceeds threshold; used to short hysteresis resistor and lower effective trip point on rising input. |
| 3 - SET1 | Inverting comparator 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-impedance and separated from noisy digital ground. |
| 5 - V+ | Positive supply rail | Accepts 1.8V–16V; powers all internal circuitry; also serves as source for HYSTx outputs and pull-up reference for OUTx loads. |
| 6 - OUT2 | Open-drain N-channel output | Sinks current when SET2 voltage falls below its programmed threshold; independently configurable from OUT1. |
| 7 - SET2 | Inverting comparator input | Independent high-Z input for second voltage monitor channel; enables simultaneous overvoltage and undervoltage detection. |
| 8 - HYST2 | Open-drain P-channel hysteresis output | Functions identically to HYST1 but for SET2 channel; allows independent hysteresis programming per detector. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables single-chip monitoring of both overvoltage (e.g., 5.5V) and undervoltage (e.g., 4.5V) on same supply rail. |
| Individually programmable hysteresis | HYST1/HYST2 outputs allow resistor-based hysteresis tuning per channel, eliminating need for external op-amps or comparators. |
| 1.3V internal bandgap reference | Stable, supply-independent threshold reference ensures consistent trip points across 1.8V–16V V+ range and -40°C to +85°C. |
| 20mA output sink capability | Drives indicator LEDs, optocouplers, or MCU reset inputs directly-no external transistor required for typical low-power loads. |
| Pb-free SOIC-8 package | M8.15 outline meets RoHS and JEDEC MS-012-AA standards; qualified for reflow soldering and compatible with standard SMT lines. |
Applications
| Battery Low-Voltage Warning | Single-Supply Power OK Monitor |
|---|---|
|
Use Scenario: Detecting when a 3.7V Li-ion battery drops below 3.0V to trigger visual/audible alert before deep discharge. IC Role / Device Role / Timing Role: ICL7665SIBA compares divided battery voltage at SET2 against 1.3V reference; OUT2 asserts low when threshold crossed. Use Value: Prevents battery damage by enabling early warning at precisely set voltage, using only two external resistors and no active components. |
Use Scenario: Generating a "POWER OK" signal for microcontrollers when a +5V rail remains within 4.75V–5.25V window. IC Role / Device Role / Timing Role: ICL7665SIBA's SET1 and SET2 monitor upper/lower bounds; OUT1 and OUT2 wired-OR to produce active-low fault flag. Use Value: Eliminates need for discrete comparators and reference ICs-reduces BOM count and layout area while ensuring monotonic trip behavior. |
| AC Brownout Detection | Multi-Rail System Fault Monitoring |
|
Use Scenario: Detecting sustained AC line sag (<90VAC) by monitoring rectified/filtered secondary voltage in offline power supplies. IC Role / Device Role / Timing Role: ICL7665SIBA's SET1 senses decaying capacitor voltage; HYST1 controls hysteresis to avoid false triggers during transient sags. Use Value: Provides clean, chatter-free brownout flag with user-defined hold-off time-critical for orderly system shutdown in industrial controls. |
Use Scenario: Simultaneously supervising +12V, +5V, and -5V rails in test equipment to detect any rail failure before system damage occurs. IC Role / Device Role / Timing Role: ICL7665SIBA's dual channels monitor separate resistor networks; OUT1/OUT2 drive common fault bus with diode-OR logic. Use Value: Achieves full 3-rail supervision in one 8-pin SOIC, reducing PCB space by >60% versus dual discrete supervisors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7032IDR | Push-pull outputs (no external pull-ups needed); 1.8V–5.5V supply; fixed 1.24V threshold; no hysteresis pins. | Limited to low-voltage systems; lacks programmable hysteresis and dual independent trip control. | Choose TLV7032IDR only if supply is ≤5.5V and fixed thresholds suffice-ICL7665SIBA offers wider V+, full hysteresis flexibility, and rail independence. |
| MAX6375KA29+T | Single-channel, fixed 2.93V reset; 1µA quiescent current; no SET/HYST pins; SOT23-3 package. | Monitors only one rail; no over/under capability; no user-adjustable trip points. | Select MAX6375KA29+T for simple power-on reset only; ICL7665SIBA is required when dual-rail, programmable, or hysteresis-tuned monitoring is needed. |
Compared with TLV7032IDR and MAX6375KA29+T, the ICL7665SIBA uniquely supports wide-supply (1.8–16V), fully programmable dual thresholds with dedicated hysteresis control, and industrial temperature operation-all in a standard SOIC-8, making it irreplaceable for battery-backed or multi-rail fault-monitoring systems.
Availability
ICL7665SIBA is available at Aetrix Electronics and suitable for portable instrumentation, battery-operated systems, and memory power back-up applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ICL7665SIBA 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 a legacy of high-reliability industrial-grade ICs.
The ICL7665S product line was designed specifically for ultra-low-power voltage supervision in battery-critical systems-emphasizing micropower operation, wide supply range, and field-programmable trip points without external references.
FAQ
What is the guaranteed operating temperature range for ICL7665SIBA?
The ICL7665SIBA is rated for -40°C to +85°C industrial temperature operation. This is confirmed in the Ordering Information table (page 2) where "I" suffix denotes industrial grade, and electrical specifications on page 3 explicitly list performance over this range-including supply current, trip voltage, and temperature coefficient.
Does ICL7665SIBA include an internal voltage reference?
Yes, the ICL7665SIBA integrates a precision bandgap voltage reference of 1.3V, used by both comparators. As stated on page 1, "An internal bandgap type reference provides an accurate threshold voltage," and the Functional Block Diagram (page 5) labels it "REF." This eliminates need for external references in most applications.
Can ICL7665SIBA monitor both overvoltage and undervoltage on the same supply rail?
Yes-ICL7665SIBA's dual independent comparators enable simultaneous overvoltage (via SET1/OUT1/HYST1) and undervoltage (via SET2/OUT2/HYST2) detection on one rail. Figure 12 (page 9) demonstrates this exact use case, setting VU = 5.55V and VL = 4.45V on a +5V supply using resistor networks.
What package type and footprint does ICL7665SIBA use?
ICL7665SIBA uses an 8-lead narrow-body SOIC package per JEDEC MS-012-AA, Intersil drawing M8.15. Dimensions are 3.9mm × 4.9mm body, 1.27mm lead pitch, and it is Pb-free with matte tin terminations-fully compatible with standard reflow soldering processes.
How is hysteresis implemented on ICL7665SIBA?
Hysteresis is implemented using dedicated HYST1 and HYST2 open-drain P-channel outputs. When a channel trips, its HYSTx pin pulls low (to V+), shorting an external resistor to adjust the effective trip point-enabling precise, resistor-programmable hysteresis as shown in Figures 10A and 11 (pages 8–9). No external op-amps are required.
ICL7665SIBA 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
ICL7665SIBA FAQ
1.How can I place an order for ICL7665SIBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SIBA 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 reliable?
The price and inventory of ICL7665SIBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SIBA is usually 5 days.
3.What payment methods are accepted for ICL7665SIBA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SIBA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SIBA?
ICL7665SIBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SIBA 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?
For technical support, including ICL7665SIBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SIBA requirements.
6.How does Aetrix verify that ICL7665SIBA is sourced from the original manufacturer or authorized distributors?
All ICL7665SIBA 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 meets industry standards.
7.What is the process for return or replacement of ICL7665SIBA?
All ICL7665SIBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SIBA, 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 part is unused and in its original packaging.
Return procedure for ICL7665SIBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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