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Renesas ICL7665SACBA
- Part No.:
- ICL7665SACBA
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SACBA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,006
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Product details
Overview
ICL7665SACBA from Intersil is a CMOS micropower dual over/under voltage detector IC with individually programmable trip points, 1.3V internal bandgap reference, 3µA typical supply current, and open-drain N- and P-channel outputs. It operates from 1.6V to 16V and is used in battery-operated systems for low-battery warning, power-fail detection, and supply fault monitoring.
For engineers reviewing the ICL7665SACBA datasheet, ICL7665SACBA pinout, ICL7665SACBA application, or ICL7665SACBA equivalent, key selection criteria include guaranteed 10µA max quiescent current over temperature, ±5mV trip voltage matching between channels, 100ppm/°C threshold tempco (ICL7665SA variant), and SOIC-8 Pb-free package compatibility with wave soldering.
Technical Context
The ICL7665SACBA integrates two independent comparators sharing a precision 1.3V bandgap reference. Each comparator drives an open-drain N-channel transistor (OUT1/OUT2) and an open-drain P-channel transistor (HYST1/HYST2), enabling flexible hysteresis configuration via external resistors on SET and HYST pins.
It supports programmable upper/lower trip voltages with hysteresis levels set by resistor networks. Input leakage at SET pins is ≤10nA, and output saturation voltages are specified down to 0.06V (V+ = 15V, IOUT = 2mA), ensuring reliable logic-level interfacing with microcontrollers and power management ICs.
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. |
| Quiescent Current | ≤10µA max (–40°C to +85°C) - Ensures >10-year battery life in always-on monitoring applications like memory backup or portable instrumentation. |
| Reference Voltage | 1.30V ±2.5% (ICL7665SA) - Provides stable trip point baseline across temperature and supply variations for accurate voltage supervision. |
| Output Sink/Source | 20mA sink (OUT1/OUT2), –25mA source (HYST1/HYST2) - Directly drives LEDs, MOSFET gates, or pull-up networks without buffer stages. |
| Input Leakage | ≤10nA at SET pins - Allows use of high-value resistor dividers (>10MΩ) without significant trip point error or power loss. |
| Delay Time | 55–90µs (input transition to output response) - Supports real-time supply monitoring in fast-transient systems such as USB-powered devices or DC-DC converters. |
| Tempco | 100ppm/°C (ICL7665SA) - Limits trip voltage drift to ±13mV over –40°C to +85°C, critical for industrial-grade fault detection. |
Pinout & Package
ICL7665SACBA is housed in an 8-lead SOIC (Pb-free), JEDEC MS-012-AA compliant package (PKG DWG M8.15), 3.9mm × 4.9mm body, 1.27mm lead pitch, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT1 | Open-drain N-channel output | Sinks current when VSET1 < 1.3V; used for undervoltage alarm or reset assertion. |
| 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 | Comparator 1 input | High-impedance node (≤10nA leakage) for resistor-divider feedback; sets primary trip point. |
| 4 GND | Analog ground reference | Return path for internal bandgap and comparator circuitry; must be low-impedance and separated from digital ground if noise-sensitive. |
| 5 V+ | Positive supply rail | Accepts 1.6V–16V; powers internal reference, comparators, and output drivers; requires local 0.05µF decoupling for fast-rising supplies. |
| 6 OUT2 | Open-drain N-channel output | Sinks current when VSET2 < 1.3V; typically used for overvoltage detection or secondary fault flag. |
| 7 SET2 | Comparator 2 input | Independent high-Z input for second voltage monitoring channel; enables dual-supply or window detection. |
| 8 HYST2 | Open-drain P-channel hysteresis control | Sources current when VSET2 > 1.3V; configures hysteresis for second detector independently of OUT1/HYST1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent detectors | Enables simultaneous overvoltage and undervoltage monitoring on same supply, or independent monitoring of two rails (e.g., +5V and +3.3V). |
| Individually programmable hysteresis | Each channel's HYST pin controls separate resistor network, allowing asymmetric hysteresis (e.g., 100mV up, 50mV down) to prevent chatter near trip points. |
| 1.3V precision bandgap reference | Stable internal reference eliminates need for external voltage reference IC, reducing BOM count and PCB area in space-constrained designs. |
| Pb-free SOIC-8 package | RoHS-compliant 8-lead narrow-body SOIC (M8.15) supports automated assembly and wave soldering; compatible with standard reflow profiles. |
| Guaranteed 10µA max supply current | Specified over full –40°C to +85°C range, enabling reliable low-power design without derating assumptions or thermal margin overhead. |
Applications
| Battery Low-Voltage Warning | Single-Supply Power OK Monitor |
|---|---|
|
Use Scenario: Monitoring Li-ion or alkaline battery voltage during discharge in portable medical devices or handheld test equipment. IC Role / Device Role / Timing Role: ICL7665SACBA compares battery voltage against programmable 3.0V undervoltage threshold using SET2; OUT2 asserts low when below threshold. Use Value: Provides early warning before cutoff, enabling graceful shutdown and data save; hysteresis prevents false triggers during load transients. |
Use Scenario: Validating stable +5V rail from a 7805 regulator in embedded controllers before enabling downstream logic. IC Role / Device Role / Timing Role: ICL7665SACBA monitors +5V via SET1 (trip = 4.75V) and SET2 (trip = 5.25V); wired-OR outputs generate "POWER OK" signal. Use Value: Detects brownout or overvoltage conditions with <100µs response, preventing MCU corruption or EEPROM write errors during unstable supply. |
| AC Mains Brownout Detection | Multi-Rail System Fault Monitoring |
|
Use Scenario: Detecting AC line undervoltage in wall-powered IoT gateways using rectified transformer secondary voltage. IC Role / Device Role / Timing Role: ICL7665SACBA's OUT1 discharges capacitor each half-cycle; OUT2 triggers when capacitor voltage exceeds 1.3V during sustained low-line event. Use Value: Delivers >100ms warning before complete power loss, enabling safe state capture and cloud sync prior to shutdown. |
Use Scenario: Simultaneous monitoring of +12V, +5V, and –5V rails in industrial PLC backplanes. IC Role / Device Role / Timing Role: SET1 and SET2 configured with resistor networks that sum currents from all rails; single ICL7665SACBA flags any rail deviation. Use Value: Reduces component count vs. discrete comparators; eliminates timing skew between rail monitors for deterministic fault response. |
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 350nA quiescent current; no internal reference or hysteresis control pins. | Requires external 1.2V reference and hysteresis resistors; suitable only for basic threshold detection, not dual-channel or programmable hysteresis. | Select TLV7032IDR only when ultra-low IQ (<1µA) is mandatory and dual independent detectors are unnecessary. |
| MAX6326UK31D3+ | Dedicated 3.08V reset IC with fixed threshold, 140ms reset timeout, and push-pull output; no programmability or dual-channel capability. | Provides guaranteed power-on reset pulse but cannot monitor overvoltage or support custom trip points. | Choose MAX6326UK31D3+ for simple microcontroller reset generation where fixed 3.08V threshold suffices and hysteresis is not required. |
Compared with TLV7032IDR and MAX6326UK31D3+, the ICL7665SACBA uniquely delivers dual independently programmable detectors with integrated hysteresis control and a precision 1.3V reference-enabling compact, flexible voltage supervision without external references or complex resistor networks.
Availability
ICL7665SACBA is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and power supply fault monitoring requiring stable component supply and long-term manufacturability.
Supply support for ICL7665SACBA 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 leader in precision analog and power management ICs, now part of Renesas Electronics, with ISO9001-certified manufacturing and a focus on high-reliability industrial and infrastructure solutions.
The ICL7665SACBA belongs to Intersil's micropower voltage supervisor product line, designed specifically for battery-backed memory, portable computing, and fault-tolerant power systems where low IQ, accuracy, and dual-channel flexibility are essential.
FAQ
What is the operating temperature range for the ICL7665SACBA?
The ICL7665SACBA is rated for 0°C to +70°C commercial temperature operation, as confirmed in the Ordering Information table (FN3182 Rev 10.00, Page 2). This range applies specifically to the ICL7665SACBAZ and ICL7665SACBAZA variants, both marked "7665S ACBAZ" and packaged in 8-lead SOIC (M8.15).
Does the ICL7665SACBA include an internal voltage reference?
Yes, the ICL7665SACBA integrates a precision bandgap voltage reference of 1.30V ±2.5% (for ICL7665SA grade), which serves as the common threshold for both comparators. This eliminates the need for external reference components and ensures stable trip points across supply and temperature variations.
Can the ICL7665SACBA monitor two different supply rails simultaneously?
Yes, the ICL7665SACBA supports independent monitoring of two voltage rails using SET1 and SET2 inputs. Each channel has dedicated OUT and HYST pins, enabling fully decoupled over/under detection-for example, +12V overvoltage (SET1) and +3.3V undervoltage (SET2) in the same system.
What package type is used for the ICL7665SACBA?
The ICL7665SACBA uses an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, drawing M8.15), Pb-free with matte tin termination. Its dimensions are 4.9mm × 3.9mm × 1.75mm, and it is qualified for wave soldering per Intersil Note 2.
How is hysteresis implemented on the ICL7665SACBA?
Hysteresis is implemented externally using resistor networks controlled by the HYST1 and HYST2 pins. When a comparator trips, its corresponding HYST pin switches state (e.g., HYST1 sources current), shorting or paralleling external resistors to shift the effective trip point-enabling user-defined hysteresis widths without additional ICs.
ICL7665SACBA 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7665SACBA FAQ
1.How can I place an order for ICL7665SACBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SACBA 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 reliable?
The price and inventory of ICL7665SACBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SACBA is usually 5 days.
3.What payment methods are accepted for ICL7665SACBA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SACBA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SACBA?
ICL7665SACBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SACBA 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?
For technical support, including ICL7665SACBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SACBA requirements.
6.How does Aetrix verify that ICL7665SACBA is sourced from the original manufacturer or authorized distributors?
All ICL7665SACBA 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 meets industry standards.
7.What is the process for return or replacement of ICL7665SACBA?
All ICL7665SACBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SACBA, 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 part is unused and in its original packaging.
Return procedure for ICL7665SACBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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