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Renesas ICL7665SACPAZ
- Part No.:
- ICL7665SACPAZ
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7665SACPAZ.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
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Product details
Overview
ICL7665SACPAZ from Intersil is a dual CMOS micropower over/under voltage detector in an 8-lead PDIP package, featuring two independently programmable comparators with 1.3V internal bandgap reference, 3µA typical supply current, ±5mV trip voltage difference, and open-drain N-channel (OUT1/OUT2) and P-channel (HYST1/HYST2) outputs for flexible hysteresis configuration. It is used in battery-operated systems for low-battery warning, power-fail detection, and single/multiple supply fault monitoring.
For engineers reviewing the ICL7665SACPAZ datasheet, ICL7665SACPAZ pinout, ICL7665SACPAZ application, or ICL7665SACPAZ equivalent, key selection criteria include guaranteed 10µA max quiescent current over temperature, 2% threshold accuracy (ICL7665SA variant), 100ppm/°C temperature coefficient, individually programmable upper/lower trip points via external resistors, and compatibility with 1.6V–16V supply range across 0°C to +70°C operation.
Technical Context
The ICL7665SACPAZ integrates two independent high-impedance input comparators sharing a precision 1.3V bandgap reference. Each comparator drives complementary open-drain outputs: OUT1/OUT2 (N-channel to GND) and HYST1/HYST2 (P-channel to V+), enabling bidirectional hysteresis control via external resistor networks.
Its architecture supports both overvoltage and undervoltage detection on separate inputs (SET1/SET2), with trip thresholds set by resistor dividers and hysteresis adjusted by switching feedback paths through HYST pins. The device operates down to 1.6V supply and maintains <10µA max supply current across its full commercial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 16V - enables direct use across wide battery and regulated supply rails without level-shifting. |
| Quiescent Current | ≤10µA max at -40°C to +85°C - ensures multi-year operation in coin-cell-powered instrumentation. |
| Internal Reference | 1.30V ±0.025V (ICL7665SA) - provides stable trip point baseline independent of supply variation. |
| Threshold Tempco | 100ppm/°C - limits trip voltage drift to ±13mV over 0°C to +70°C ambient. |
| Output Sink/Source | 20mA sink (OUT1/OUT2), 25mA source (HYST1/HYST2) - directly drives LEDs, MOSFET gates, or logic inputs without buffers. |
| Input Leakage | ≤10nA at SET1/SET2 - permits use of MΩ-range programming resistors without significant error. |
| Propagation Delay | 55–90µs - supports reliable detection of slow-rising/falling supply faults in portable systems. |
Pinout & Package
ICL7665SACPAZ is housed in an 8-lead PDIP (Plastic Dual-In-Line Package), RoHS-compliant, with 0.300-inch body width and JEDEC MS-001-BA compliant outline (PKG DWG # E8.3). Thermal resistance θJA = 115°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT1 | N-channel open-drain output | Sinks current to GND when SET1 ≤ 1.3V; used for undervoltage alarm or reset assertion. |
| 2 HYST1 | P-channel open-drain output | Sources current from V+ when SET1 > 1.3V; enables hysteresis by shorting feedback resistors. |
| 3 SET1 | Non-inverting input of comparator 1 | High-impedance node (≤10nA leakage) for resistor-divider voltage sensing; sets over/under trip point 1. |
| 4 GND | Analog ground reference | Return path for internal bandgap and comparator circuitry; must be low-impedance for accuracy. |
| 5 V+ | Positive supply rail | Power input (1.6–16V); powers internal reference, comparators, and output drivers. |
| 6 OUT2 | N-channel open-drain output | Sinks current to GND when SET2 ≤ 1.3V; used for second fault channel (e.g., low-battery warning). |
| 7 SET2 | Non-inverting input of comparator 2 | Independent high-Z input for second resistor divider; sets trip point 2, typically offset from SET1. |
| 8 HYST2 | P-channel open-drain output | Sources current from V+ when SET2 > 1.3V; provides hysteresis control for comparator 2. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage detectors | Enables simultaneous overvoltage (e.g., 5.5V) and undervoltage (e.g., 4.5V) monitoring on one chip, reducing BOM count and PCB area. |
| Individually programmable hysteresis | HYST1/HYST2 outputs allow resistor-network-based hysteresis tuning per channel-prevents chatter near trip points without external components. |
| 1.3V precision bandgap reference | Stable internal reference eliminates need for external voltage reference IC, simplifying design and improving long-term threshold stability. |
| Open-drain N/P complementary outputs | Supports wired-OR logic, level translation, and flexible pull-up/pull-down configurations-compatible with TTL, CMOS, and microcontroller GPIOs. |
| Guaranteed 10µA max supply current | Validated over full temperature range (0°C to +70°C), ensuring predictable battery life in portable medical and handheld instruments. |
Applications
| Single-Supply Fault Monitor | Low-Battery Warning & Disconnect |
|---|---|
|
Use Scenario: Monitoring a +5V rail for overvoltage (>5.5V) and undervoltage (<4.5V) conditions in embedded controllers. IC Role / Device Role / Timing Role: ICL7665SACPAZ acts as dual-threshold supervisor generating a "POWER OK" signal via wired-OR outputs. Use Value: Eliminates need for two discrete comparators and reference; hysteresis prevents false triggering during supply transients. |
Use Scenario: Rechargeable Li-ion system requiring early low-battery alert and hard disconnect before deep discharge. IC Role / Device Role / Timing Role: ICL7665SACPAZ uses SET1 for shutdown (e.g., 3.0V) and SET2 for warning (e.g., 3.3V), with HYST outputs configuring hysteresis. Use Value: Prevents battery damage while extending usable runtime; open-drain outputs directly interface with load-switch FET gate or MCU interrupt pin. |
| AC Power Fail & Brownout Detection | High/Low Temperature Alarm |
|
Use Scenario: Detecting AC line sag or dropout in offline power supplies using rectified transformer secondary voltage. IC Role / Device Role / Timing Role: ICL7665SACPAZ monitors capacitor voltage charged/discharged by rectified AC waveform; OUT2 asserts power-fail flag. Use Value: Provides ≥16ms warning before 5V regulator dropout; timing determined by RC network-no timing IC required. |
Use Scenario: Industrial sensor node needing thermal protection across -20°C to +70°C ambient range. IC Role / Device Role / Timing Role: ICL7665SACPAZ compares NPN transistor VBE (temp-coefficient ≈ -2mV/°C) against 1.3V reference to trigger high/low alarms. Use Value: Uses low-cost silicon transistor as sensor; dual comparators enable independent high-temp cutoff and low-temp freeze warning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+ | Single-channel, fixed 2.93V threshold, 1.6µA quiescent current, SOT23-3 package | Lacks dual-channel flexibility and programmability; suited only for single-rail monitoring | Select when space-constrained and only one precise fixed threshold is needed; not suitable for over/under detection. |
| TLV809E29DBZR | Single-channel, fixed 2.93V, 0.5µA quiescent current, SOT23-3, no hysteresis pin | No user-adjustable hysteresis or dual thresholds; requires external resistor network for hysteresis | Choose for ultra-low-power single-supply monitoring where hysteresis can be added externally and board space is critical. |
Compared with MAX6326US29D3+ and TLV809E29DBZR, the ICL7665SACPAZ delivers dual independent programmable thresholds, integrated hysteresis control, and higher output drive-making it uniquely suited for compact, battery-sensitive over/under supervision without external active components.
Availability
ICL7665SACPAZ is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation, and power supply fault monitoring requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole assembly.
Supply support for ICL7665SACPAZ 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 a focus on high-reliability industrial and infrastructure solutions.
The ICL7665S product line was designed specifically for micropower voltage supervision in portable and battery-backed systems, emphasizing ultra-low quiescent current, wide supply range, and flexible dual-threshold detection without external references.
FAQ
What is the maximum supply voltage rating for the ICL7665SACPAZ?
The ICL7665SACPAZ has an absolute maximum supply voltage rating of +18V. However, its specified operating range is 1.6V to 16V. Operation above 16V may cause parametric degradation or latchup due to SCR structure inherent in the CMOS process. For reliable long-term performance, keep V+ within 1.6V–16V, especially under temperature extremes. The ICL7665SACPAZ datasheet specifies electrical characteristics only within this operational window.
Can the ICL7665SACPAZ monitor both overvoltage and undervoltage on the same supply rail?
Yes, the ICL7665SACPAZ can monitor both overvoltage and undervoltage on a single supply rail using its dual comparators. SET1 configures the overvoltage trip (e.g., 5.5V), while SET2 configures the undervoltage trip (e.g., 4.5V). The outputs (OUT1, OUT2) and hysteresis pins (HYST1, HYST2) are fully independent, allowing separate resistor networks for each threshold and hysteresis level. This capability is explicitly demonstrated in Figure 12 of the ICL7665SACPAZ datasheet.
Does the ICL7665SACPAZ require external components to function?
The ICL7665SACPAZ requires external resistors to set trip voltages at SET1 and SET2, and optional resistors/capacitors for hysteresis and noise filtering. It does not require an external reference-its internal 1.3V bandgap reference is self-contained. Pull-up resistors on OUT1/OUT2 are necessary for logic-level output, and a 0.05µF capacitor between V+ and GND is recommended in battery applications to suppress supply-rail dV/dt-induced latchup. These requirements are documented in the ICL7665SACPAZ functional description and application circuits.
What is the temperature range specification for the ICL7665SACPAZ?
The ICL7665SACPAZ is rated for operation from 0°C to +70°C (commercial temperature range), as confirmed in the Ordering Information table on page 2 of the FN3182 Rev 10.00 datasheet. Its electrical specifications-including supply current, threshold accuracy, and propagation delay-are guaranteed across this full range. The 'C' suffix in the part number (ICL7665SACPAZ) explicitly denotes the commercial temperature grade, distinct from the 'I' grade (-40°C to +85°C) variants.
How does hysteresis work on the ICL7665SACPAZ, and which pins control it?
Hysteresis on the ICL7665SACPAZ is implemented using HYST1 and HYST2 pins, which are open-drain P-channel outputs referenced to V+. When a comparator trips (e.g., SET1 exceeds 1.3V), its corresponding HYST pin turns ON and shorts part of the external resistor network, lowering the effective trip threshold for the falling edge. This creates asymmetric rising/falling thresholds-eliminating oscillation near trip points. The ICL7665SACPAZ datasheet details two hysteresis configurations (Figures 10A and 11), both relying on HYST1/HYST2 to actively modify the SET1/SET2 divider ratio.
ICL7665SACPAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7665SACPAZ FAQ
1.How can I place an order for ICL7665SACPAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7665SACPAZ 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 ICL7665SACPAZ reliable?
The price and inventory of ICL7665SACPAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7665SACPAZ is usually 5 days.
3.What payment methods are accepted for ICL7665SACPAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7665SACPAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7665SACPAZ?
ICL7665SACPAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7665SACPAZ 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 ICL7665SACPAZ?
For technical support, including ICL7665SACPAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7665SACPAZ requirements.
6.How does Aetrix verify that ICL7665SACPAZ is sourced from the original manufacturer or authorized distributors?
All ICL7665SACPAZ 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 ICL7665SACPAZ meets industry standards.
7.What is the process for return or replacement of ICL7665SACPAZ?
All ICL7665SACPAZ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7665SACPAZ, 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 ICL7665SACPAZ part is unused and in its original packaging.
Return procedure for ICL7665SACPAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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