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Renesas ISL88002IH23Z-TK
- Part No.:
- ISL88002IH23Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88002IH23Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ISL88002IH23Z-TK from Renesas Electronics is an ultra-low-power, open-drain voltage supervisor IC designed for precise 2.32V supply monitoring in battery-powered and space-constrained systems. It delivers ±1.2% threshold accuracy, 160nA supply current at 1.8V, 190ms power-on reset timeout, and valid reset assertion down to VDD = 1V. It serves as a system-level power integrity guard in microcontroller-based portable equipment.
For engineers reviewing the ISL88002IH23Z-TK datasheet, ISL88002IH23Z-TK pinout, ISL88002IH23Z-TK application, or ISL88002IH23Z-TK equivalent, key selection criteria include its SOT-23-3 open-drain RST output, 2.32V fixed trip point, industrial temperature range (–40°C to +85°C), and compatibility with low-voltage logic interfaces requiring external pull-up.
Technical Context
The ISL88002IH23Z-TK implements a precision bandgap reference and comparator architecture to monitor VDD against a factory-trimmed 2.32V threshold with 1% hysteresis. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it for ≥140ms after VDD exceeds VTHVDD, ensuring stable initialization before processor release.
As an open-drain output device, ISL88002IH23Z-TK requires an external pull-up resistor (5kΩ–100kΩ) on the RST line to interface with standard CMOS inputs. It operates across 1.8V–2.75V supply range and maintains full functionality down to 1V during brownout detection-enabling robust low-voltage supervision without auxiliary biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V nominal (±1.2% over –40°C to +85°C); ensures accurate 2.3V rail monitoring for 2.5V/3.3V system derivatives. |
| Supply Current | 160nA typical at 1.8V; enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| POR Timeout | 190ms typical tPOR; guarantees sufficient delay for FPGA configuration or oscillator stabilization before MCU release. |
| Operating Voltage Range | 1.8V to 2.75V; supports direct connection to 2.5V or 2.3V LDO outputs without level-shifting. |
| Reset Output Type | Active-low open-drain RST; allows wired-OR reset bus sharing and flexible logic-level translation via external pull-up. |
| Minimum Valid VDD | 1V; enables reliable brownout detection even during deep discharge of Li-ion or alkaline cells. |
| Package | 3-lead SOT-23 (Pb-free, RoHS compliant); footprint-compatible with industry-standard discrete transistor layouts. |
Pinout & Package
ISL88002IH23Z-TK is housed in a 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), measuring 2.92mm × 1.30mm × 1.00mm with 0.95mm lead pitch. The package is Pb-free, RoHS-compliant, and rated MSL1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | IC substrate and comparator reference node; must be connected to system ground plane with low-impedance path. |
| 2 - RST | Open-drain reset output | Active-low signal asserted when VDD < 2.32V; requires external pull-up (5kΩ–100kΩ) to host logic rail (e.g., 1.8V/3.3V). |
| 3 - VDD | Power supply & monitored input | Single-pin dual function: powers the IC and provides the voltage being supervised; no external components needed. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 160nA at 1.8V enables >10-year battery life in always-on sensor nodes with CR2032 cells. |
| Fixed 2.32V threshold | Factory-trimmed accuracy eliminates need for external resistive dividers or calibration in 2.3V–2.5V system designs. |
| 1V minimum operating voltage | Guarantees functional reset assertion during severe brownouts, supporting fail-safe shutdown in energy-harvesting systems. |
| No external components required | Reduces BOM count and PCB area by eliminating timing capacitors, divider networks, or pull-up resistors beyond the mandatory RST pull-up. |
| Immunity to supply transients | Hysteresis and internal filtering prevent false resets during fast-rising/dropping edges or ESD-induced glitches on VDD. |
Applications
| Battery-Powered Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Continuous glucose monitors and pulse oximeters powered by single-cell lithium coin batteries. IC Role / Device Role / Timing Role: Monitors 2.3V regulated rail and asserts active-low reset to ARM Cortex-M0+ MCU upon voltage sag below 2.32V. Use Value: 160nA current draw extends battery life beyond 3 years; 1V brownout detection prevents corrupted sensor readings during end-of-life discharge. |
Use Scenario: DIN-rail mounted digital input modules operating in harsh factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervises 2.5V local LDO output feeding isolated SPI interface ICs and GPIO expanders. Use Value: ±1.2% threshold accuracy ensures reliable operation across –40°C to +85°C; SOT-23 footprint simplifies layout in dense I/O board designs. |
| Wearable Fitness Trackers | Smart Energy Meters |
|
Use Scenario: Compact wrist-worn devices using integrated 2.3V buck-boost regulators to maintain stable core voltage from variable battery sources. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection for the application SoC and BLE radio subsystem. Use Value: 190ms POR timeout aligns with BLE stack initialization timing; open-drain RST allows shared reset bus with multiple peripherals. |
Use Scenario: Revenue-grade electricity meters with tamper-detection circuits and real-time clocks requiring guaranteed power-fail signaling. IC Role / Device Role / Timing Role: Detects collapse of 2.5V RTC backup rail and triggers nonvolatile memory write-before-power-loss sequence. Use Value: Valid reset assertion down to 1V ensures early warning before RTC capacitor discharge completes; RoHS-compliant SOT-23 meets utility certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SUR+T | 2.93V fixed threshold, 3.0µA supply current, SOT-23-3 push-pull RST | Higher threshold and current unsuitable for 2.3V rails; push-pull eliminates need for external pull-up but lacks wired-OR capability | Select only if system uses 3.0V supply and requires no external RST resistor; not drop-in due to different VTH and output type |
| TPS3808G12QDBVRQ1 | 1.2V adjustable threshold (via resistor divider), 1.1µA supply current, SOT-23-6, automotive grade (–40°C to +125°C) | Requires two external resistors; wider temp range and AEC-Q100 qualification add cost and complexity for industrial use | Choose only for automotive designs needing programmable thresholds or extended temperature support; over-specified for standard industrial 2.32V monitoring |
Compared with MAX809SUR+T and TPS3808G12QDBVRQ1, ISL88002IH23Z-TK offers the lowest power consumption and exact 2.32V match for legacy 2.3V/2.5V systems, while its open-drain output provides design flexibility in multi-device reset architectures-making it optimal for cost-sensitive, battery-operated industrial and portable electronics.
Availability
ISL88002IH23Z-TK is available at Aetrix Electronics and suitable for battery-powered medical sensors, industrial PLC I/O modules, wearable fitness trackers, and smart energy meters requiring stable component supply across long production lifecycles.
Supply support for ISL88002IH23Z-TK 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
Renesas Electronics is a global semiconductor leader delivering high-performance, low-power microcontrollers, analog, and power management solutions for industrial, automotive, and IoT markets.
The ISL88002IH23Z-TK belongs to Renesas' Ultra Low Power Voltage Supervisor family, engineered specifically for precision, minimal-footprint power monitoring in portable and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the ISL88002IH23Z-TK?
The ISL88002IH23Z-TK has a nominal reset threshold voltage of 2.32V, with guaranteed accuracy of ±1.2% over the full industrial temperature range (–40°C to +85°C). At +25°C, the typical value is 2.320V, and the min/max limits are 2.257V and 2.383V respectively, as specified in the FN6174 datasheet Electrical Specifications table.
Does the ISL88002IH23Z-TK require an external pull-up resistor on the RST pin?
Yes, the ISL88002IH23Z-TK features an open-drain RST output and requires an external pull-up resistor between the RST pin and the target logic rail (e.g., 1.8V or 3.3V). The datasheet recommends values from 5kΩ to 100kΩ; 10kΩ is commonly used to balance speed, power, and noise immunity in most designs using ISL88002IH23Z-TK.
Can the ISL88002IH23Z-TK operate reliably below 1.8V?
No-the ISL88002IH23Z-TK's recommended operating supply range is 1.8V to 2.75V. While its reset output remains valid down to VDD = 1V for brownout detection, the IC itself does not guarantee functional operation (e.g., internal reference stability or POR timing) below 1.8V. For sub-1.8V applications, ISL88002IH17Z-TK (1.67V threshold) or ISL88002IH16Z-TK (1.58V threshold) are appropriate alternatives.
Is the ISL88002IH23Z-TK pin-compatible with MAX809 or MAX810?
No-while the ISL88002IH23Z-TK is functionally comparable to MAX809/MAX810 and shares the same SOT-23-3 footprint, it is not pin-compatible due to differing pin functions: ISL88002IH23Z-TK uses Pin 2 as open-drain RST, whereas MAX809/MAX810 use Pin 2 as RESET (push-pull). Substituting ISL88002IH23Z-TK requires verifying RST pull-up implementation and logic polarity in the host design.
What is the power-on reset timeout duration for the ISL88002IH23Z-TK?
The ISL88002IH23Z-TK provides a typical power-on reset timeout (tPOR) of 190ms, with guaranteed minimum and maximum values of 140ms and 260ms respectively over –40°C to +85°C. This delay ensures sufficient time for system clock stabilization and firmware initialization before releasing the host microcontroller from reset.
ISL88002IH23Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ISL88002IH23Z-TK FAQ
1.How can I place an order for ISL88002IH23Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IH23Z-TK 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 ISL88002IH23Z-TK reliable?
The price and inventory of ISL88002IH23Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IH23Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88002IH23Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IH23Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IH23Z-TK?
ISL88002IH23Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IH23Z-TK 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 ISL88002IH23Z-TK?
For technical support, including ISL88002IH23Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IH23Z-TK requirements.
6.How does Aetrix verify that ISL88002IH23Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88002IH23Z-TK 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 ISL88002IH23Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88002IH23Z-TK?
All ISL88002IH23Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IH23Z-TK, 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 ISL88002IH23Z-TK part is unused and in its original packaging.
Return procedure for ISL88002IH23Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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