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Renesas ICL7665SAIBA
- Part No.:
- ICL7665SAIBA
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SAIBA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,996
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Product details
Overview
ICL7665SAIBA from Intersil is a dual CMOS micropower over/under voltage detector IC with individually programmable trip points and hysteresis, 2% threshold accuracy, 100 ppm/°C temperature coefficient, and guaranteed ≤10 µA max supply current across -40°C to +85°C. It operates from 1.8 V to 16 V and is used in battery backup supervision, power fail warning, and low-battery disconnect circuits.
For engineers reviewing the ICL7665SAIBA datasheet, ICL7665SAIBA pinout, ICL7665SAIBA application, or ICL7665SAIBA equivalent, this page delivers verified technical context, exact SOIC-8 package mapping, confirmed dual-comparator architecture with open-drain outputs, real-world hysteresis implementation guidance, and validated alternative part comparisons for industrial-grade voltage monitoring designs.
Technical Context
The ICL7665SAIBA integrates two independent comparators referencing a precision 1.3 V internal 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.
It guarantees operation over -40°C to +85°C with 1.8 V to 16 V supply range, 2% input threshold accuracy (ICL7665SA grade), and 100 ppm/°C temperature coefficient - distinguishing it from the base ICL7665S (200 ppm/°C, 2% tolerance only at 25°C). All critical parameters are tested across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 16 V - supports wide-input battery and industrial rail monitoring without external regulation |
| Max Supply Current | 10 µA at -40°C to +85°C - enables multi-year operation on coin cells or energy-harvesting systems |
| Threshold Accuracy | ±2% over full temperature range - ensures reliable trip point stability in automotive or outdoor environments |
| Temp Coefficient | 100 ppm/°C - reduces drift-induced false triggers in thermal-cycling applications vs. 200 ppm/°C ICL7665S |
| Output Type | Open-drain OUT1/OUT2 (N-ch) + open-drain HYST1/HYST2 (P-ch) - allows flexible wired-OR, level-shifting, and hysteresis injection |
| Input Leakage | ≤10 nA at SET1/SET2 - permits use of high-value resistors (>10 MΩ) for ultra-low-power threshold setting |
| Delay Time | 55–90 µs typical - sufficient for DC supply monitoring; not intended for high-speed signal detection |
Pinout & Package
ICL7665SAIBA is housed in an 8-lead Pb-free SOIC package (JEDEC MS-012-AA, package drawing M8.15), 3.9 mm × 4.9 mm body, 1.27 mm lead pitch, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | Open-drain N-channel output | Sinks current when VSET1 exceeds 1.3 V; requires external pull-up for logic-high state |
| 2: HYST1 | Open-drain P-channel hysteresis output | Sources current when VSET1 < 1.3 V; used to inject hysteresis by shunting upper divider resistor |
| 3: SET1 | Undervoltage/overvoltage sense input | High-impedance comparator input referenced to 1.3 V; sets trip point via resistor divider from V+ |
| 4: GND | Analog ground reference | Return path for internal bandgap and comparator circuitry; must be low-impedance for accuracy |
| 5: V+ | Positive supply rail | Power input (1.8–16 V); also supplies internal reference and drives HYSTx outputs |
| 6: OUT2 | Open-drain N-channel output | Sinks current when VSET2 exceeds 1.3 V; independent of OUT1 for dual-threshold detection |
| 7: SET2 | Second sense input | Independent high-Z input for second threshold; enables over/under detection on same supply |
| 8: HYST2 | Open-drain P-channel hysteresis output | Sources current when VSET2 < 1.3 V; provides separate hysteresis control for second detector |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detectors | Enables simultaneous overvoltage (OUT1/HYST1) and undervoltage (OUT2/HYST2) monitoring on one rail without external logic |
| Programmable hysteresis | Each detector's hysteresis is set independently via HYSTx feedback - eliminates need for external Schmitt triggers |
| 100 ppm/°C threshold drift | Reduces temperature-induced trip point shift by 50% vs. ICL7665S, improving reliability in uncontrolled ambient conditions |
| Guaranteed 10 µA max IQ | Validated across -40°C to +85°C - ensures predictable battery life in portable medical or IoT edge devices |
| Pb-free SOIC-8 package | RoHS-compliant, JEDEC-standard M8.15 footprint - drop-in compatible with automated SMT assembly lines |
Applications
| Battery Backup Supervision | Power Fail Warning |
|---|---|
|
Use Scenario: Monitoring VCC in microcontroller-based systems with non-volatile RAM to prevent data corruption during brownout. IC Role / Device Role / Timing Role: Dual-threshold detector asserting write-protection (OUT2) before backup switchover and disabling main supply (OUT1) at critical low voltage. Use Value: Prevents spurious writes to battery-backed SRAM by generating clean, hysteresis-stabilized enable/disable signals with no external components beyond resistors. |
Use Scenario: Detecting AC line dropout or DC supply sag in industrial PLCs to initiate graceful shutdown before control loss. IC Role / Device Role / Timing Role: OUT1 monitors unregulated DC input; rising edge on OUT2 triggers warning LED or UART alert prior to system reset. Use Value: Provides ≥100 ms advance warning (via RC time constant on HYST2) before 5 V regulator collapse, enabling safe state save. |
| Low-Battery Disconnect | Multi-Rail Fault Monitor |
|
Use Scenario: Protecting Li-ion or NiMH batteries in handheld instruments from deep discharge damage. IC Role / Device Role / Timing Role: OUT1 disables charging/load switch at 3.0 V cutoff; OUT2 illuminates "low battery" LED at 3.3 V warning threshold. Use Value: Enables two-stage battery management with independent, resistor-programmable thresholds and built-in hysteresis to avoid oscillation near trip points. |
Use Scenario: Simultaneous monitoring of +5 V, +15 V, and -15 V rails in test equipment to assert single "POWER OK" signal. IC Role / Device Role / Timing Role: SET1 and SET2 biased from weighted resistor networks across multiple supplies; OUT1/OUT2 wired-OR'd to common pull-up. Use Value: Reduces BOM count vs. discrete comparators - single IC replaces three independent voltage monitors with shared reference accuracy. |
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), 36 V max VIN, but only 1.8 V min supply; no dedicated hysteresis outputs | Requires external hysteresis resistors or RC networks; better suited for high-voltage industrial sensors than battery systems | Select TLV7032IDR when push-pull drive and higher input voltage range outweigh need for integrated hysteresis control |
| MAX6375CSA+ | Single-threshold supervisor (not dual), fixed 2.93 V trip, 200 ms reset timeout, no programmability | Only provides reset assertion - cannot implement independent over/under detection or custom hysteresis | Select MAX6375CSA+ only for simple power-on reset where dual thresholds and field-adjustable trip points are unnecessary |
Compared with TLV7032IDR and MAX6375CSA+, the ICL7665SAIBA uniquely delivers dual independently programmable thresholds with dedicated open-drain hysteresis outputs in a single SOIC-8 package - essential for compact, low-power over/under voltage supervision where resistor-based flexibility and minimal external components are required.
Availability
ICL7665SAIBA is available at Aetrix Electronics and suitable for battery-operated instrumentation, industrial power monitoring, and portable computing applications requiring stable component supply across extended temperature ranges.
Supply support for ICL7665SAIBA 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 voltage monitoring and supervisory ICs.
The ICL7665S family was designed specifically for micropower over/under voltage detection in battery-critical systems, emphasizing guaranteed performance across industrial temperature ranges and resistor-programmable flexibility without external references.
FAQ
What is the operating temperature range for the ICL7665SAIBA?
The ICL7665SAIBA is rated for -40°C to +85°C industrial temperature operation. This is confirmed in the Ordering Information table (page 2) and Electrical Specifications (page 3), where all key parameters - including supply current, threshold accuracy, and temperature coefficient - are guaranteed across this full range. The 'I' suffix in the part number explicitly denotes the industrial grade.
Does the ICL7665SAIBA require an external reference voltage?
No, the ICL7665SAIBA does not require an external reference. It contains an internal bandgap reference generating a precise 1.3 V threshold for both comparators, as stated on page 1 ("internal bandgap type reference provides an accurate threshold voltage") and confirmed in the Functional Block Diagram (page 5) and Detailed Description (page 7).
How is hysteresis implemented on the ICL7665SAIBA?
Hysteresis is implemented using the HYST1 and HYST2 pins, which are open-drain P-channel outputs. When active, they short part of the external resistor divider on SET1 or SET2, effectively lowering the trip voltage for falling inputs. This is detailed in Figures 10A/11 and Table 1 (pages 8–9), with equations showing how R31/R32 adjust upper/lower thresholds independently per channel.
Can the ICL7665SAIBA monitor two different supply rails simultaneously?
Yes - the ICL7665SAIBA can monitor two independent rails. SET1 and SET2 accept separate resistor-divider networks tied to distinct voltage sources (e.g., +5 V and +15 V), as demonstrated in Figure 13 (page 9). Each comparator operates autonomously, allowing true dual-rail fault detection with no shared sensing constraints.
What is the maximum sink current capability of the OUT1 and OUT2 pins on the ICL7665SAIBA?
The OUT1 and OUT2 pins can sink up to 20 mA, as specified in the Features list (page 1) and Absolute Maximum Ratings (page 3: "Maximum Sink Output OUT1 and OUT2 … 25 mA"). Typical saturation voltage remains below 0.5 V at 2 mA (page 4), confirming robust drive capability for LEDs, MOSFET gates, or logic inputs.
ICL7665SAIBA 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
ICL7665SAIBA FAQ
1.How can I place an order for ICL7665SAIBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SAIBA 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 reliable?
The price and inventory of ICL7665SAIBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SAIBA is usually 5 days.
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4.How is shipping managed for ICL7665SAIBA?
ICL7665SAIBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SAIBA 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?
For technical support, including ICL7665SAIBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SAIBA requirements.
6.How does Aetrix verify that ICL7665SAIBA is sourced from the original manufacturer or authorized distributors?
All ICL7665SAIBA 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 meets industry standards.
7.What is the process for return or replacement of ICL7665SAIBA?
All ICL7665SAIBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SAIBA, 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 part is unused and in its original packaging.
Return procedure for ICL7665SAIBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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