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Renesas ICL7665SACBAZ-T
- Part No.:
- ICL7665SACBAZ-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SACBAZ-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,668
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Product details
Overview
ICL7665SACBAZ-T from Intersil is a dual CMOS micropower over/under voltage detector with individually programmable trip points, 1.3V internal bandgap reference, ±50mV VSET1–VSET2 mismatch, and 10µA max quiescent current across temperature - used in battery-operated systems for low-battery warning, power-fail detection, and supply fault monitoring.
For engineers reviewing the ICL7665SACBAZ-T datasheet, ICL7665SACBAZ-T pinout, ICL7665SACBAZ-T application, or ICL7665SACBAZ-T equivalent, this page delivers verified specifications, SOIC-8 package details, dual-threshold hysteresis implementation guidance, and real-world use cases including single/multi-supply fault monitors and temperature alarms.
Technical Context
The ICL7665SACBAZ-T integrates two independent comparators sharing a precision 1.3V bandgap reference; each compares SET1/SET2 input voltages against that reference to drive open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs. Trip thresholds are resistor-programmable with hysteresis controlled via external HYST feedback paths.
It operates from 1.6V to 16V supply, supports 0°C to +70°C commercial temperature range, and guarantees ≤10µA supply current over full temperature range. Threshold accuracy is ±2% (ICL7665S variant), with 100ppm/°C tempco on VSET and <1mV input resolution for stable switching under noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V 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 portable instrumentation. |
| Internal Reference | 1.3V bandgap - provides stable, supply-independent threshold baseline for accurate over/under detection across voltage rails. |
| VSET Accuracy | ±2% (ICL7665S) - allows precise setting of 4.5V undervoltage and 5.5V overvoltage trip points in 5V systems with minimal calibration. |
| Output Type | Open-drain OUT1/OUT2 (N-ch), open-drain HYST1/HYST2 (P-ch) - supports wired-OR logic, flexible pull-up/pull-down, and bidirectional hysteresis control. |
| Delay Time | 55–90µs (tSOxD/tSHxD) - fast enough for microprocessor reset assertion but slow enough to reject sub-cycle transients in brownout detection. |
| Tempco (ΔVSET/ΔT) | 200ppm/°C - introduces only ~26mV drift over -25°C to +85°C, maintaining reliable trip margins in industrial environments. |
Pinout & Package
ICL7665SACBAZ-T is housed in an 8-lead narrow-body SOIC (M8.15) RoHS-compliant package with 1.27mm lead pitch, 4.00mm body width, and 6.20mm length - optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | N-channel open-drain output | Sinks current when VSET1 < 1.3V - used for undervoltage alert or system shutdown signal. |
| 2: HYST1 | P-channel open-drain output | Sources current when VSET1 > 1.3V - enables hysteresis by shorting R31 to ground in Figure 10A. |
| 3: SET1 | Comparator 1 input | High-impedance node (≤10nA leakage) - accepts resistor-divided supply voltage for programmable undervoltage trip point. |
| 4: GND | Analog/digital ground reference | Common return for internal bandgap, comparators, and all external resistive dividers. |
| 5: V+ | Positive supply rail | Power input (1.6–16V); also serves as reference for HYSTx outputs and defines output saturation limits. |
| 6: OUT2 | N-channel open-drain output | Sinks current when VSET2 < 1.3V - used for low-battery warning or memory backup disable. |
| 7: SET2 | Comparator 2 input | High-impedance node - accepts separate resistor divider for overvoltage or second threshold detection. |
| 8: HYST2 | P-channel open-drain output | Sources current when VSET2 > 1.3V - implements hysteresis for comparator 2 using same topology as HYST1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detectors | Enables simultaneous monitoring of supply overvoltage (e.g., 5.5V) and undervoltage (e.g., 4.5V) with separate hysteresis control per channel. |
| Resistor-programmable thresholds | Eliminates need for external references or trimming; trip points set via standard resistor networks (e.g., R11/R21 for VTR1). |
| Guaranteed 10µA max I+ | Validated across -40°C to +85°C - removes thermal derating uncertainty in battery-powered designs. |
| Open-drain HYST outputs | Allows true bidirectional hysteresis: HYST1 pulls low to reduce effective R21, raising trip point on rising VIN (Figure 10A). |
| 100% tested at 2V | Ensures functionality at lowest operating voltage - critical for end-of-life battery detection in 2-cell alkaline systems. |
Applications
| Single-Supply Fault Monitor | Multi-Supply Monitoring |
|---|---|
Use Scenario: Detecting out-of-spec 5V rail in embedded controllers where undervoltage (4.5V) and overvoltage (5.5V) must trigger a POWER_OK signal. IC Role / Device Role / Timing Role: Dual comparator generating complementary open-drain outputs wired-OR'd to a pull-up resistor for clean power-good assertion. Use Value: Prevents system lockup or data corruption by halting processor clocks before supply collapse, with hysteresis eliminating chatter near trip points. |
Use Scenario: Simultaneous monitoring of +5V, -5V, and -15V rails in test equipment requiring coordinated fault response. IC Role / Device Role / Timing Role: Shared VSET node configuration (Figure 13) where resistor network sums currents from multiple supplies to generate composite trip condition. Use Value: Reduces BOM count vs. discrete detectors; enables detection of partial supply failure (e.g., -5V loss while +5V remains nominal). |
| Low-Battery Disconnect | AC Brownout Detection |
Use Scenario: Protecting rechargeable Li-ion batteries in portable medical devices from deep discharge below 3.0V. IC Role / Device Role / Timing Role: OUT1 drives enable pin of DC-DC converter (e.g., ICL7663S) to disconnect load; OUT2 lights LED warning at higher threshold (e.g., 3.3V). Use Value: Extends battery cycle life by enforcing hard cutoff while providing user-visible advance warning - no firmware or ADC required. |
Use Scenario: Detecting AC line sags in industrial PLCs where transformer secondary voltage drops below 12V RMS. IC Role / Device Role / Timing Role: OUT1 discharges capacitor C1 each half-cycle; OUT2 asserts when C1 charges to 1.3V during sustained undervoltage (Figure 17). Use Value: Provides >100ms warning before 5V regulator dropout - sufficient time to save state or initiate graceful shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar over/under voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7032IDR | Single-supply nanosupply comparator (350nA), no internal reference or hysteresis control - requires external reference and feedback resistors. | Lacks integrated bandgap and HYST outputs; cannot replicate dual-threshold hysteresis without ≥4 external components. | Choose TLV7032IDR only if ultra-low I+ (<1µA) dominates over design simplicity and board space. |
| MAX6326US29D3+ | Dedicated 2.93V reset IC with fixed threshold, 140ms delay, and push-pull output - no programmability or dual-threshold capability. | Only supports single-voltage monitoring; unsuitable for asymmetric over/under detection or custom hysteresis. | Select MAX6326US29D3+ when replacing legacy reset circuits with fixed 2.93V threshold and no redesign budget. |
Compared with TLV7032IDR and MAX6326US29D3+, the ICL7665SACBAZ-T uniquely combines dual programmable thresholds, integrated 1.3V reference, and dedicated HYST outputs - enabling compact, self-contained over/under detection without external references or complex feedback networks.
Availability
ICL7665SACBAZ-T is available at Aetrix Electronics and suitable for battery-operated instrumentation, portable computing power management, and industrial fault-monitoring systems requiring stable component supply and long-term obsolescence support.
Supply support for ICL7665SACBAZ-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 sensing and protection ICs.
The ICL7665S product line was designed specifically for micropower supply monitoring in portable and battery-critical systems - emphasizing ultra-low I+, resistor-programmable flexibility, and robust hysteresis implementation.
FAQ
What is the guaranteed maximum supply current for ICL7665SACBAZ-T across temperature?
The ICL7665SACBAZ-T guarantees ≤10µA supply current over the full operating temperature range of 0°C to +70°C, validated at 2V, 9V, and 15V supply voltages - critical for multi-year battery life in always-on monitoring applications.
Can ICL7665SACBAZ-T monitor both overvoltage and undervoltage on the same supply rail?
Yes - ICL7665SACBAZ-T uses separate SET1 and SET2 inputs with resistor dividers to configure distinct trip points (e.g., 4.5V undervoltage and 5.5V overvoltage on a 5V rail), and its HYST1/HYST2 outputs enable independent hysteresis for each threshold.
What package type and lead count does ICL7665SACBAZ-T use?
ICL7665SACBAZ-T uses an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, Intersil M8.15 drawing), with 1.27mm lead pitch, 4.00mm body width, and Pb-free RoHS-compliant construction - compatible with standard reflow soldering profiles.
How does the internal 1.3V bandgap reference affect threshold accuracy in ICL7665SACBAZ-T?
The internal 1.3V bandgap reference establishes the comparator trip baseline; combined with ±2% VSET tolerance and 200ppm/°C tempco, it ensures absolute threshold error remains within ±50mV over -25°C to +85°C - sufficient for 5V supply monitoring with 100mV guard bands.
Is ICL7665SACBAZ-T pin-compatible with earlier ICL7665 variants?
Yes - ICL7665SACBAZ-T shares identical SOIC-8 pinout and electrical behavior with ICL7665SCBAZ and ICL7665SIBAZ, differing only in temperature grade (0°C to +70°C) and Pb-free packaging; no PCB changes are needed for drop-in replacement.
ICL7665SACBAZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
ICL7665SACBAZ-T FAQ
1.How can I place an order for ICL7665SACBAZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SACBAZ-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 ICL7665SACBAZ-T reliable?
The price and inventory of ICL7665SACBAZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SACBAZ-T is usually 5 days.
3.What payment methods are accepted for ICL7665SACBAZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SACBAZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SACBAZ-T?
ICL7665SACBAZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SACBAZ-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 ICL7665SACBAZ-T?
For technical support, including ICL7665SACBAZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SACBAZ-T requirements.
6.How does Aetrix verify that ICL7665SACBAZ-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SACBAZ-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 ICL7665SACBAZ-T meets industry standards.
7.What is the process for return or replacement of ICL7665SACBAZ-T?
All ICL7665SACBAZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SACBAZ-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 ICL7665SACBAZ-T part is unused and in its original packaging.
Return procedure for ICL7665SACBAZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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