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Renesas ICL7665SACBA-T
- Part No.:
- ICL7665SACBA-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SACBA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,402
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Product details
Overview
ICL7665SACBA-T from Intersil is a dual CMOS micropower over/under voltage detector with individually programmable trip points, 1.3V internal bandgap reference, ±5mV trip voltage difference, and 10µA maximum quiescent current across temperature - used for battery low-voltage warning and power-rail fault monitoring in portable instrumentation.
For engineers reviewing the ICL7665SACBA-T datasheet, ICL7665SACBA-T pinout, ICL7665SACBA-T application, or ICL7665SACBA-T equivalent, this page delivers verified specifications, SOIC-8 package layout, real-world hysteresis implementation guidance, and validated alternative options for supply monitoring designs requiring sub-10µA operation and dual-threshold detection.
Technical Context
The ICL7665SACBA-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, guarantees 2% threshold accuracy (ICL7665SA variant), exhibits 100ppm/°C temperature coefficient on VSET, and supports up to 20mA output sink current while maintaining ≤10µA total supply current over -40°C to +85°C industrial range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - enables direct monitoring of Li-ion, NiMH, and regulated 3.3V/5V/12V rails without level-shifting. |
| Quiescent Current | ≤10µA max over full temperature range - ensures multi-year battery life in always-on fault monitors. |
| Reference Voltage | 1.30V ±2.5% (ICL7665SA) - stable internal bandgap reference eliminates need for external precision voltage source. |
| Output Sink Capability | Up to 20mA per OUTx - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages. |
| Input Leakage Current | ≤10nA at SET pins - permits use of high-value (>1MΩ) programming resistors without significant threshold error. |
| Delay Time (tSO1D) | 85µs typical (1.0V→1.6V transition) - fast enough for power-up reset but slow enough to reject line noise transients. |
| Temperature Coefficient | 100ppm/°C (ICL7665SA) - limits threshold drift to ±13mV over -40°C to +85°C, critical for accurate brownout detection. |
Pinout & Package
ICL7665SACBA-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 footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT1 | Open-drain N-channel output | Sinks current when VSET1 < 1.3V; used for undervoltage alert or power-fail signal assertion. |
| 2 HYST1 | Open-drain P-channel hysteresis control | Sources current to adjust rising-edge trip point for OUT1; enables resistor-based hysteresis configuration. |
| 3 SET1 | Undervoltage comparator input | High-impedance node (≤10nA leakage); voltage divider sets trip threshold relative to 1.3V reference. |
| 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 (1.6–16V); also serves as reference for HYST2 and OUT2 output swing compliance. |
| 6 OUT2 | Open-drain N-channel output | Sinks current when VSET2 > 1.3V; used for overvoltage detection or battery disconnect control. |
| 7 SET2 | Overvoltage comparator input | High-impedance node; configured with resistor divider to set upper trip threshold independently of SET1. |
| 8 HYST2 | Open-drain P-channel hysteresis control | Sources current to adjust falling-edge trip point for OUT2; allows asymmetric hysteresis for clean switching. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage (OUT2) and undervoltage (OUT1) monitoring on same supply rail with separate thresholds and hysteresis. |
| Individually programmable hysteresis | HYST1/HYST2 pins allow resistor-configured hysteresis on each detector, preventing chatter near trip points without external components. |
| 100% tested at 2V supply | Guarantees functionality down to 2V - essential for monitoring single-cell Li-ion (2.5–4.2V) or alkaline (0.9–1.5V × 3) battery packs. |
| 100ppm/°C threshold tempco (ICL7665SA) | Minimizes thermal drift in battery-powered systems operating across wide ambient ranges, improving long-term reliability of fault detection. |
| Pb-free SOIC-8 packaging | RoHS-compliant M8.15 outline supports automated reflow assembly and meets IPC/JEDEC J-STD-020 moisture sensitivity Level 1 requirements. |
Applications
| Battery Low-Voltage Warning | Single-Supply Power OK Monitor |
|---|---|
|
Use Scenario: Portable medical device detects declining lithium-polymer cell voltage during field use to trigger audible alert before shutdown. IC Role / Device Role / Timing Role: ICL7665SACBA-T acts as undervoltage detector (SET1) with 3.0V trip and 50mV hysteresis, asserting OUT1 to enable buzzer driver. Use Value: 10µA quiescent current extends usable battery life by >12 months versus discrete comparator solutions; internal 1.3V reference eliminates calibration drift. |
Use Scenario: Industrial PLC board validates 5V rail integrity during startup and runtime, generating "POWER_OK" signal for microcontroller reset control. IC Role / Device Role / Timing Role: ICL7665SACBA-T configures OUT1 for 4.5V undervoltage lockout and OUT2 for 5.5V overvoltage protection, wired-OR'd to single status line. Use Value: Dual-threshold detection replaces two discrete supervisors; guaranteed 1.3V reference ensures ±2.5% trip accuracy across temperature without trimming. |
| Rechargeable Battery Disconnect | AC Brownout Detection |
|
Use Scenario: Handheld test instrument cuts off load when NiMH pack drops below 2.8V to prevent deep discharge damage. IC Role / Device Role / Timing Role: ICL7665SACBA-T uses OUT1 to disable main DC-DC converter via gate-control MOSFET when SET1 falls below 1.3V (corresponding to 2.8V system input). Use Value: Open-drain OUT1 sinks 20mA directly - no external transistor needed; hysteresis prevents oscillation during gradual voltage sag. |
Use Scenario: Smart meter detects AC line sags below 90V RMS using rectified secondary voltage, triggering backup power switchover. IC Role / Device Role / Timing Role: ICL7665SACBA-T monitors filtered DC from transformer secondary; OUT2 asserts when capacitor voltage crosses 1.3V, indicating brownout condition. Use Value: 85µs propagation delay provides sufficient response time for grid event logging; 10nA SET pin leakage avoids loading RC timing network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809EC26DBZR | Single-channel, fixed 2.63V reset; no hysteresis programming; 0.5µA IQ | Only provides undervoltage reset; lacks dual-threshold capability and adjustable hysteresis | Select only if single-rail monitoring suffices and ultra-low IQ (<1µA) is prioritized over flexibility |
| MAX6816EUT+T | Dual-channel, fixed 2.93V/4.63V thresholds; 20µA IQ; integrated debouncing | Fixed thresholds limit adaptability to custom supply rails; higher IQ reduces battery life vs. ICL7665SACBA-T | Choose when board space is constrained and standard 3.3V/5V rails require plug-and-play supervision without resistor networks |
Compared with TLV809EC26DBZR and MAX6816EUT+T, the ICL7665SACBA-T uniquely supports fully resistor-programmable dual thresholds and hysteresis within a 10µA envelope - making it the only option for custom battery cutoff voltages, asymmetric trip windows, or legacy supply rails outside standard 3.3V/5V ranges.
Availability
ICL7665SACBA-T is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and charging systems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for ICL7665SACBA-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 ISO9001-certified manufacturing and focus on high-reliability industrial and infrastructure solutions.
The ICL7665SACBA-T belongs to Intersil's micropower voltage supervisor product line, designed specifically for battery-backed and energy-constrained systems needing accurate, low-power over/under voltage detection with flexible threshold configuration.
FAQ
What is the guaranteed maximum supply current for ICL7665SACBA-T over temperature?
The ICL7665SACBA-T guarantees ≤10µA maximum supply current across the full -40°C to +85°C industrial temperature range, measured at V+ = 2V, 9V, and 15V. This specification is explicitly confirmed in the Electrical Characteristics table under "Supply Current" for ICL7665SA-grade devices, which includes ICL7665SACBA-T.
Can ICL7665SACBA-T monitor both overvoltage and undervoltage on the same supply rail?
Yes. The ICL7665SACBA-T contains two independent comparators: SET1 and OUT1 configure as an undervoltage detector, while SET2 and OUT2 configure as an overvoltage detector. Both share the same 1.3V internal reference but accept separate resistor dividers, enabling simultaneous high- and low-threshold monitoring on one rail - as demonstrated in Figure 12 of the datasheet.
What package type and footprint does ICL7665SACBA-T use?
ICL7665SACBA-T uses an 8-lead narrow-body SOIC package per JEDEC MS-012-AA (outline M8.15), with 1.27mm lead pitch, 3.9mm body width, and 4.9mm body length. Its land pattern matches standard SOIC-8 footprints and supports reflow soldering per Pb-free profiles.
How is hysteresis implemented on ICL7665SACBA-T?
Hysteresis on ICL7665SACBA-T is implemented externally using HYST1 and HYST2 pins: each connects to a resistor network that modifies the effective trip voltage when the corresponding OUTx output changes state. Figure 10A shows the standard configuration where HYSTx shorts part of the upper resistor, lowering the trip point on falling edges - enabling clean, chatter-free switching.
Does ICL7665SACBA-T require external components to operate?
Yes - ICL7665SACBA-T requires external resistor dividers on SET1 and SET2 to define trip voltages, plus pull-up resistors on OUT1/OUT2 (open-drain) and optional hysteresis resistors on HYST1/HYST2. No external reference or capacitors are mandatory, though a 0.05µF V+/GND bypass capacitor is recommended for rapid-supply-rise immunity per datasheet precautions.
ICL7665SACBA-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7665SACBA-T FAQ
1.How can I place an order for ICL7665SACBA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SACBA-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 ICL7665SACBA-T reliable?
The price and inventory of ICL7665SACBA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SACBA-T is usually 5 days.
3.What payment methods are accepted for ICL7665SACBA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SACBA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SACBA-T?
ICL7665SACBA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SACBA-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 ICL7665SACBA-T?
For technical support, including ICL7665SACBA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SACBA-T requirements.
6.How does Aetrix verify that ICL7665SACBA-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SACBA-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 ICL7665SACBA-T meets industry standards.
7.What is the process for return or replacement of ICL7665SACBA-T?
All ICL7665SACBA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SACBA-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 ICL7665SACBA-T part is unused and in its original packaging.
Return procedure for ICL7665SACBA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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