My Inquiry
My Account
Renesas ICL7665SCBA-T
- Part No.:
- ICL7665SCBA-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7665SCBA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,627
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7665SCBA-T from Intersil is a CMOS micropower dual over/under voltage detector IC with individually programmable trip points and hysteresis, 1.3V internal bandgap reference, 3µA typical supply current, and operation from 1.6V to 16V supply-designed for battery-operated fault monitoring in portable instrumentation and memory backup systems.
For engineers reviewing the ICL7665SCBA-T datasheet, ICL7665SCBA-T pinout, ICL7665SCBA-T application, or ICL7665SCBA-T equivalent, this page delivers verified functional identity, SOIC-8 package mapping, dual comparator timing behavior, threshold accuracy (±2%), and real-world hysteresis implementation guidance for low-power supply supervision.
Technical Context
The ICL7665SCBA-T integrates two independent high-impedance comparators referencing a stable 1.3V bandgap source, each driving open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs. Trip thresholds are set externally via resistor dividers on SET1/SET2 pins, while HYST1/HYST2 enable programmable hysteresis by shorting external resistors.
It operates across 0°C to +70°C with guaranteed 10µA max quiescent current, 100ppm/°C threshold temperature coefficient, and ±50mV VSET1–VSET2 mismatch-enabling precise undervoltage and overvoltage detection without shared reference drift or cross-coupling between channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - supports single-cell Li-ion up to 12V industrial rails without external regulation |
| Quiescent Current | ≤10µA max over temperature - enables multi-year battery life in always-on monitoring |
| Threshold Accuracy | ±2% (ICL7665SC variant) - ensures reliable trip point repeatability across production lots |
| Output Sink Capability | 20mA per OUTx - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages |
| Input Leakage Current | ≤10nA at SET pins - preserves high-impedance divider networks and minimizes error in precision threshold setting |
| Delay Time (tSO1D) | 85µs typical - provides deterministic response for power-fail warning before brownout-induced system reset |
| Temperature Coefficient | 100ppm/°C - limits threshold drift to <±13mV over 0°C to +70°C operating range |
Pinout & Package
ICL7665SCBA-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 JEDEC MS-012-AA compliance.
| 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-OK assertion |
| 2 HYST1 | Open-drain P-channel hysteresis control | Sources current to short R31 when VSET1 > 1.3V - enables rising-edge hysteresis configuration |
| 3 SET1 | Undervoltage comparator input | High-impedance node (≤10nA leakage) - connects to resistor divider for programmable VTRIP1 |
| 4 GND | Analog ground reference | Return path for internal bandgap and comparator circuitry - must be low-impedance for noise immunity |
| 5 V+ | Positive supply rail | Power input (1.6–16V); powers internal reference, comparators, and output drivers |
| 6 OUT2 | Open-drain N-channel output | Sinks current when VSET2 < 1.3V - used for low-battery warning or secondary fault signal |
| 7 SET2 | Overvoltage comparator input | High-impedance node (≤10nA leakage) - connects to resistor divider for programmable VTRIP2 |
| 8 HYST2 | Open-drain P-channel hysteresis control | Sources current to short R32 when VSET2 > 1.3V - enables rising-edge hysteresis on second channel |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Enables simultaneous undervoltage and overvoltage detection on separate supplies or thresholds without shared reference error |
| Programmable hysteresis per channel | Eliminates output oscillation near trip points using HYSTx-controlled resistor switching - no external op-amps required |
| 1.3V internal bandgap reference | Stable, supply-independent threshold source - removes need for external precision reference ICs or voltage dividers |
| 100% tested at 2V supply | Guarantees functionality in ultra-low-voltage applications such as coin-cell-powered sensors or backup circuits |
| Pb-free SOIC-8 packaging | RoHS-compliant, reflow-solderable footprint compatible with standard SMT assembly lines and IPC/JEDEC J-STD-020 requirements |
Applications
| Portable Instrumentation Power Supervision | Battery Backup Memory Protection |
|---|---|
|
Use Scenario: Monitoring Li-ion battery voltage during deep discharge in handheld multimeters or data loggers. IC Role / Device Role / Timing Role: ICL7665SCBA-T acts as dual-threshold supervisor: OUT2 triggers low-battery warning at 3.3V; OUT1 initiates graceful shutdown at 2.9V. Use Value: Prevents memory corruption and battery damage by enforcing clean cutoff before under-voltage lockout of downstream regulators. |
Use Scenario: Ensuring CMOS SRAM retains data during AC power loss in embedded controllers. IC Role / Device Role / Timing Role: ICL7665SCBA-T monitors 5V rail; OUT2 asserts write-protection signal when VCC drops below 4.5V. Use Value: Eliminates need for discrete reset ICs or microcontroller polling - guarantees immediate hardware-level memory freeze. |
| Single-Supply Fault Monitor | AC Brownout Detection |
|
Use Scenario: Detecting overvoltage (5.55V) and undervoltage (4.45V) on a +5V system rail in medical diagnostic equipment. IC Role / Device Role / Timing Role: ICL7665SCBA-T configures wired-OR POWER_OK signal using OUT1 and OUT2 with 100mV hysteresis per channel. Use Value: Provides fail-safe power validation with no software dependency - critical for Class II medical device certification. |
Use Scenario: Detecting AC line sag in industrial PLC power supplies using rectified transformer secondary voltage. IC Role / Device Role / Timing Role: ICL7665SCBA-T's SET1 senses decaying capacitor voltage; OUT1 generates early brownout flag before regulator dropout. Use Value: Delivers >16ms warning margin prior to 5V rail collapse - enables controlled I/O shutdown and state save. |
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), 1.8V–5.5V supply, fixed 1.24V threshold, no hysteresis pins | Limited to low-voltage digital systems; requires external RC network for hysteresis; unsuitable for >5.5V rails | Choose TLV7032IDR only for cost-sensitive 3.3V designs where programmable hysteresis is not required. |
| MAX6375KA+T | Single-channel, fixed 2.93V threshold, integrated watchdog timer, 1.6V–5.5V supply, no dual-trip capability | Cannot monitor both over- and under-voltage simultaneously; lacks independent SET/HYST pin flexibility | Select MAX6375KA+T when system-level reset timing and watchdog functionality outweigh dual-threshold needs. |
Compared with TLV7032IDR and MAX6375KA+T, the ICL7665SCBA-T uniquely supports independent, resistor-programmable over/under thresholds across 1.6–16V with dedicated hysteresis control per channel-making it irreplaceable for wide-supply, dual-fault monitoring in portable and industrial equipment.
Availability
ICL7665SCBA-T is available at Aetrix Electronics and suitable for portable instrumentation, battery backup memory protection, and single-supply fault monitoring requiring stable component supply and long-term manufacturing continuity.
Supply support for ICL7665SCBA-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 global distribution.
The ICL7665S family was designed specifically for micropower supply supervision in battery-constrained systems-emphasizing ultra-low quiescent current, wide supply range, and field-programmable trip points without external references.
FAQ
What is the maximum supply voltage rating for the ICL7665SCBA-T?
The ICL7665SCBA-T has an absolute maximum supply voltage of +18V, but its specified operating range is 1.6V to 16V. Operation above 16V risks exceeding electrical specifications and may cause latchup due to SCR structure inherent in the CMOS process. Always limit V+ to ≤16V in normal use, and ensure transient spikes stay below +18V with appropriate clamping.
How do I configure the ICL7665SCBA-T for overvoltage detection only?
To use the ICL7665SCBA-T for overvoltage detection only, connect SET2 to the monitored voltage rail and leave SET1 unconnected (or tie to GND via ≥1MΩ). Configure R12/R22 to set VTRIP2 = 1.3V × (R12 + R22)/R12. Use OUT2 as the active-low fault flag. HYST2 adds hysteresis; OUT1 remains unused. Ensure GND and V+ are properly decoupled to avoid false triggering.
Does the ICL7665SCBA-T require external components to operate?
Yes - the ICL7665SCBA-T requires external resistor dividers on SET1 and SET2 to define trip voltages, plus pull-up resistors on OUT1/OUT2 (since they are open-drain), and optional hysteresis resistors (R31/R32) connected to HYST1/HYST2. No external reference or capacitors are mandatory, but a 0.05µF V+/GND bypass capacitor is recommended to suppress supply transients that could trigger latchup.
What is the purpose of the HYST1 and HYST2 pins on the ICL7665SCBA-T?
HYST1 and HYST2 are open-drain P-channel outputs that sink current when their respective comparator trips. They are used to short external hysteresis resistors (e.g., R31) to dynamically adjust the trip threshold during voltage transitions - enabling programmable hysteresis without feedback resistors or op-amps. This prevents output chatter near threshold crossings in noisy or slowly varying supply environments.
Can the ICL7665SCBA-T monitor negative supply rails?
No - the ICL7665SCBA-T is designed for positive-supply monitoring only. Its SET inputs accept voltages from GND to V+, and its internal 1.3V bandgap reference is referenced to GND. To monitor negative rails, use an inverting level-shifter (e.g., op-amp or resistor network) to translate the negative voltage into the 0–V+ range acceptable at SET1 or SET2, ensuring common-mode and absolute voltage limits are respected.
ICL7665SCBA-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
ICL7665SCBA-T FAQ
1.How can I place an order for ICL7665SCBA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SCBA-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 ICL7665SCBA-T reliable?
The price and inventory of ICL7665SCBA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SCBA-T is usually 5 days.
3.What payment methods are accepted for ICL7665SCBA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SCBA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SCBA-T?
ICL7665SCBA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SCBA-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 ICL7665SCBA-T?
For technical support, including ICL7665SCBA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SCBA-T requirements.
6.How does Aetrix verify that ICL7665SCBA-T is sourced from the original manufacturer or authorized distributors?
All ICL7665SCBA-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 ICL7665SCBA-T meets industry standards.
7.What is the process for return or replacement of ICL7665SCBA-T?
All ICL7665SCBA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SCBA-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 ICL7665SCBA-T part is unused and in its original packaging.
Return procedure for ICL7665SCBA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7665SCBA-T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
