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Renesas ICL7665SCBAZA-T
- Part No.:
- ICL7665SCBAZA-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SCBAZA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,677
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Product details
Overview
ICL7665SCBAZA-T from Intersil is a CMOS micropower dual over/under voltage detector IC with two independently programmable comparators, 1.3V internal bandgap reference, ±50mV trip voltage difference, and 10µA maximum quiescent current at +70°C - used for battery voltage monitoring and fault detection in portable instrumentation and memory backup systems.
For engineers reviewing the ICL7665SCBAZA-T datasheet, ICL7665SCBAZA-T pinout, ICL7665SCBAZA-T application, or ICL7665SCBAZA-T equivalent, key selection criteria include guaranteed 10µA max supply current over temperature, individually settable upper/lower trip points via external resistors, open-drain N/P-channel output architecture, SOIC-8 Pb-free package compatibility, and hysteresis programmability per detector channel.
Technical Context
The ICL7665SCBAZA-T integrates two independent high-impedance comparators referencing a stable 1.3V bandgap voltage. Each comparator drives an open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) output pair, enabling flexible hysteresis implementation via external resistor networks on SET and HYST pins.
It operates across 1.8V to 16V supply range with 100ppm/°C threshold temperature coefficient (ICL7665S grade), supports up to 20mA output sink current, and delivers sub-100µs propagation delay (e.g., 55–90µs tSOxD) under typical load conditions (ROUT = 4.7kΩ, CL = 12pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 16V - enables direct operation from single-cell Li-ion (3.0–4.2V), 5V rails, or 12V industrial supplies without regulation. |
| Max Quiescent Current | 10µA at +70°C - ensures multi-year battery life in always-on low-power monitoring applications. |
| Reference Voltage | 1.30V ±0.10V - precision internal bandgap reference used by both comparators for consistent trip point accuracy. |
| Output Type | Open-drain N-channel (OUT1/OUT2) + open-drain P-channel (HYST1/HYST2) - allows wired-OR logic, rail-to-rail sinking/sourcing, and configurable hysteresis feedback. |
| Input Leakage Current | ≤10nA at SET1/SET2 - permits use of high-value (MΩ-range) programming resistors without significant error. |
| Temperature Range | 0°C to +70°C - commercial-grade operation suitable for handheld devices, consumer electronics, and non-automotive embedded systems. |
| Package | 8-lead SOIC (Pb-free, M8.15 outline) - surface-mount compatible with standard reflow profiles and IPC-compliant PCB assembly. |
Pinout & Package
ICL7665SCBAZA-T is housed in an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, M8.15 outline), 3.9mm × 4.9mm body size, 1.27mm lead pitch, RoHS-compliant matte tin termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | N-channel open-drain output | Sinks current when VSET1 < 1.3V; used for undervoltage alarm or power-OK assertion. |
| 2 (HYST1) | P-channel open-drain output | Sources current when VSET1 > 1.3V; provides hysteresis feedback path for upper trip point. |
| 3 (SET1) | Comparator 1 input | High-impedance node (≤10nA leakage) for resistor-divider programming of first detector's trip threshold. |
| 4 (GND) | Analog ground reference | Return path for internal reference and comparator biasing; must be low-impedance and noise-isolated. |
| 5 (V+) | Positive supply rail | Power input (1.8–16V); also serves as source for HYST outputs and sink return for OUT outputs. |
| 6 (OUT2) | N-channel open-drain output | Sinks current when VSET2 < 1.3V; typically used for low-battery warning or secondary fault flag. |
| 7 (SET2) | Comparator 2 input | Independent high-Z input for second detector's threshold setting; enables dual-voltage monitoring (e.g., over/under). |
| 8 (HYST2) | P-channel open-drain output | Sources current when VSET2 > 1.3V; configures hysteresis for second detector's rising-edge trip point. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage (OUT1/HYST1) and undervoltage (OUT2/HYST2) monitoring from one supply rail. |
| Individually programmable hysteresis | Each detector's hysteresis level set via separate HYST pin feedback resistors - eliminates oscillation near trip points without shared components. |
| 10µA max supply current over temperature | Guaranteed performance across full 0°C to +70°C range - critical for battery longevity in portable medical or data logging devices. |
| 1.3V ±0.1V internal reference | Stable bandgap reference referenced to V+ and GND - eliminates need for external precision reference in cost-sensitive designs. |
| SOIC-8 Pb-free RoHS package | M8.15-compliant footprint with 1.27mm pitch - supports automated SMT assembly and meets global environmental compliance requirements. |
Applications
| Battery Voltage Monitoring | Power Supply Fault Detection |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during charge/discharge cycles in portable test equipment. IC Role / Device Role / Timing Role: Dual comparator detects both overvoltage (>4.25V) and undervoltage (<3.0V) thresholds using resistor dividers on SET1/SET2; HYST outputs configure asymmetric hysteresis to prevent chatter. Use Value: Prevents battery damage and system lockup by triggering shutdown (OUT1) and warning (OUT2) signals with <10µA standby draw. | Use Scenario: Detecting brownout and overvoltage events on a 5V system rail powering microcontrollers and SRAM. IC Role / Device Role / Timing Role: ICL7665SCBAZA-T compares regulated 5V against internal 1.3V reference via scaled dividers; OUT1 asserts "power fail" when voltage drops below 4.5V, OUT2 disables write-enable when falling below 4.2V. Use Value: Enables clean power-down sequencing and prevents corruption of battery-backed memory with sub-100µs response time. |
| Low-Battery Disconnect System | AC Power Fail Warning |
Use Scenario: Automatically disconnecting load from rechargeable NiMH pack when terminal voltage falls below safe cutoff. IC Role / Device Role / Timing Role: SET1 programmed for 0.9V (shutdown threshold), SET2 for 1.1V (warning threshold); OUT1 controls MOSFET gate to isolate battery, OUT2 drives LED indicator. Use Value: Extends battery cycle life by enforcing precise discharge limits while consuming only 10µA continuously. | Use Scenario: Generating early warning before AC mains dropout causes DC supply collapse in wall-powered instrumentation. IC Role / Device Role / Timing Role: Rectified and filtered AC secondary voltage charges capacitor; when AC fails, capacitor voltage decays and triggers OUT2 at 1.3V threshold, asserting "power fail" signal. Use Value: Provides ≥100ms warning margin before 5V regulator output collapses - sufficient for MCU-controlled data save operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+ | Single-channel reset IC with fixed 2.93V threshold; no programmable hysteresis or dual-detector capability. | Limited to single-supply monitoring; lacks independent upper/lower trip configuration. | Select when only basic power-on reset is required and board space is constrained. |
| TLV809EADBZR | Single-channel 3.08V supervisor with 200ms reset timeout; no SET/HYST pins or adjustable thresholds. | Designed for microprocessor reset generation, not continuous voltage monitoring or hysteresis tuning. | Choose for simple MCU reset assertion where trip point and timing are fixed and unchangeable. |
Compared with MAX6326US29D3+ and TLV809EADBZR, the ICL7665SCBAZA-T uniquely supports dual independent voltage windows, resistor-programmable thresholds, and user-configurable hysteresis - making it irreplaceable in applications requiring adaptive over/under detection with minimal quiescent power.
Availability
ICL7665SCBAZA-T is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and memory power back-up applications requiring stable component supply and long-term manufacturability.
Supply support for ICL7665SCBAZA-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 company, now part of Renesas Electronics, with expertise in low-power, high-accuracy signal conditioning and supervisory ICs.
The ICL7665S product line was designed specifically for micropower voltage supervision in battery-critical systems - emphasizing ultra-low IQ, wide supply range, and flexible trip-point configuration without external references.
FAQ
What is the maximum supply voltage rating for the ICL7665SCBAZA-T?
The ICL7665SCBAZA-T has an absolute maximum supply voltage of +18V, but its specified operating range is 1.8V to 16V across the full 0°C to +70°C temperature range. Operation above 16V risks exceeding electrical limits and may cause latch-up due to the CMOS SCR structure inherent in the process.
Can the ICL7665SCBAZA-T monitor two different voltage rails simultaneously?
No - the ICL7665SCBAZA-T monitors a single supply rail (V+) using two independent comparator inputs (SET1 and SET2), each fed by resistor dividers from that same rail. It cannot directly compare two isolated voltage sources; both SET inputs must be referenced to the same V+ and GND.
How is hysteresis implemented on the ICL7665SCBAZA-T?
Hysteresis is implemented externally using the HYST1 and HYST2 pins: when a comparator trips, its corresponding HYST output switches state and injects current into the SET resistor network, effectively altering the divider ratio and shifting the trip point for the opposite transition - eliminating oscillation near threshold.
Does the ICL7665SCBAZA-T require an external reference voltage?
No - the ICL7665SCBAZA-T contains an internal 1.3V bandgap reference used by both comparators. This eliminates the need for external references and simplifies design, while maintaining ±0.1V accuracy over temperature and supply variations.
What is the output drive capability of the ICL7665SCBAZA-T's OUT pins?
The OUT1 and OUT2 pins are open-drain N-channel MOSFETs capable of sinking up to 20mA at V+ = 15V with ≤0.2V saturation voltage. They require external pull-up resistors to define logic-high levels and support wired-OR configurations with other supervisors or logic devices.
ICL7665SCBAZA-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
ICL7665SCBAZA-T FAQ
1.How can I place an order for ICL7665SCBAZA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SCBAZA-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 ICL7665SCBAZA-T reliable?
The price and inventory of ICL7665SCBAZA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SCBAZA-T is usually 5 days.
3.What payment methods are accepted for ICL7665SCBAZA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SCBAZA-T transactions.
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4.How is shipping managed for ICL7665SCBAZA-T?
ICL7665SCBAZA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SCBAZA-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 ICL7665SCBAZA-T?
For technical support, including ICL7665SCBAZA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SCBAZA-T requirements.
6.How does Aetrix verify that ICL7665SCBAZA-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SCBAZA-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 ICL7665SCBAZA-T meets industry standards.
7.What is the process for return or replacement of ICL7665SCBAZA-T?
All ICL7665SCBAZA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SCBAZA-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 ICL7665SCBAZA-T part is unused and in its original packaging.
Return procedure for ICL7665SCBAZA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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