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Renesas ISL88003IH23Z-T7A
- Part No.:
- ISL88003IH23Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88003IH23Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,928
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Product details
Overview
ISL88003IH23Z-T7A from Renesas Electronics is an ultra-low-power voltage supervisor IC with 2.32V fixed reset threshold, push-pull active-high RST output, and 160nA supply current at 1.8V. It monitors VDD in microcontroller systems and portable equipment, asserting reset when VDD falls below threshold or during power-up until VDD stabilizes for 190ms.
For engineers reviewing the ISL88003IH23Z-T7A datasheet, ISL88003IH23Z-T7A pinout, ISL88003IH23Z-T7A application, or ISL88003IH23Z-T7A equivalent, key selection criteria include its 2.32V trip point accuracy (±1.2%), operation down to 1V supply, SC-70/SOT-23 package compatibility, and push-pull reset drive without external pull-up.
Technical Context
The ISL88003IH23Z-T7A implements a precision bandgap-based voltage reference comparator with hysteresis to prevent noise-induced reset chatter. Its internal POR circuit asserts reset at VDD = 1V and holds it for a guaranteed 140–260ms timeout after VDD exceeds 2.32V.
This device operates as a single-supply monitor with VDD serving both as power input and monitored rail. The push-pull RST output drives HIGH to VDD when asserted, eliminating need for external pull-up resistors and simplifying interface with 1.8V/2.5V/3.3V logic inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V ±1.2% - precisely monitors 2.3V rails with minimal tolerance drift over temperature. |
| Supply Current | 160nA at 1.8V - enables multi-year battery life in always-on sensor nodes and wearables. |
| POR Timeout | 190ms typical - ensures sufficient stabilization time for low-power MCUs and FPGAs before release. |
| Operating Voltage | 1.8V to 2.75V - supports modern ultra-low-voltage digital systems while maintaining reset validity down to 1V. |
| Output Type | Push-pull active-high - directly interfaces with MCU reset inputs without pull-up resistor or level-shifting. |
| Package | 3-lead SOT-23 - industry-standard footprint compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
ISL88003IH23Z-T7A is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236), with 0.95mm pitch, 2.92mm × 1.30mm body, and 1.00mm height. Thermal resistance θJA is 590°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane. |
| 2 | RST | Push-pull active-high reset output; driven HIGH to VDD when reset is asserted, LOW otherwise. |
| 3 | VDD | Power supply input and monitored voltage rail; supplies IC and provides input to threshold comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.32V threshold | Enables precise supervision of 2.3V LDO outputs and battery-backed rails without external components. |
| 160nA supply current | Reduces quiescent power in always-on monitoring circuits, critical for coin-cell-powered IoT endpoints. |
| 1V minimum operating voltage | Ensures reliable reset assertion even during deep brownout conditions before system shutdown. |
| Push-pull RST output | Eliminates need for external pull-up resistor, saving BOM cost and board space in compact designs. |
| ±1.2% threshold accuracy | Guarantees deterministic reset behavior across -40°C to +85°C without calibration or trimming. |
Applications
| Microcontroller Power-Up Sequencing | Battery-Powered Sensor Node Supervision |
|---|---|
Use Scenario: Ensuring clean boot of ARM Cortex-M0+ MCU after cold start or wake-from-hibernate. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection on VDD rail. Use Value: 190ms POR timeout guarantees stable clock and register initialization before firmware execution begins. | Use Scenario: Monitoring CR2032 battery voltage in wireless environmental sensor with BLE SoC. IC Role / Device Role / Timing Role: Single-rail supervisor detecting end-of-life battery drop below 2.32V. Use Value: 160nA current draw extends usable battery life beyond 5 years in periodic-sampling mode. |
| Industrial Controller Brownout Protection | Portable Medical Device Power Integrity |
Use Scenario: Preventing erratic operation of PLC I/O module during 24V DC supply sag. IC Role / Device Role / Timing Role: Reset generator triggered by falling VDD on local 2.5V LDO output. Use Value: ±1.2% threshold accuracy ensures consistent trip point across temperature and unit-to-unit variation. | Use Scenario: Securing safe shutdown of glucose meter MCU when alkaline battery drops below 2.3V. IC Role / Device Role / Timing Role: Active-high reset supervisor interfacing directly with MCU's nRESET pin. Use Value: Push-pull output eliminates external resistor, reducing component count and improving reliability in medical-grade assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | 2.32V threshold, open-drain active-low RST, 1.2µA supply current | Requires external pull-up; incompatible logic polarity without inversion | Select only if legacy design uses open-drain active-low reset and higher current budget is acceptable. |
| TPS3808G12DBVR | 1.2V threshold (not 2.32V); adjustable via external resistor; 1.1µA supply current | Not a drop-in replacement due to different threshold and adjustment requirement | Choose only when programmable threshold is needed and 2.32V fixed option is unavailable. |
Compared with MAX809TRD2+T and TPS3808G12DBVR, the ISL88003IH23Z-T7A delivers superior energy efficiency (160nA vs >1µA), exact 2.32V match without external components, and push-pull active-high output that simplifies MCU interface and reduces bill-of-materials.
Availability
ISL88003IH23Z-T7A is available at Aetrix Electronics and suitable for microcontroller power sequencing, battery-powered sensor nodes, and industrial controller brownout protection requiring stable component supply and long-term lifecycle support.
Supply support for ISL88003IH23Z-T7A 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 microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88003 belongs to Renesas' ultra-low-power voltage supervisor product line, designed specifically for energy-constrained applications where precision reset timing, nanowatt operation, and minimal footprint are essential.
FAQ
What is the reset threshold voltage of the ISL88003IH23Z-T7A?
The ISL88003IH23Z-T7A has a factory-programmed fixed reset threshold of 2.32V with ±1.2% accuracy over -40°C to +85°C. This value is confirmed in the Ordering Information table (page 7) and Electrical Specifications (page 8) of FN6174 Rev 3.00, where "3H23" marking corresponds to 2.32V nominal VTHVDD.
Does the ISL88003IH23Z-T7A require an external pull-up resistor on the RST pin?
No, the ISL88003IH23Z-T7A features a push-pull active-high RST output, which actively drives HIGH to VDD when reset is asserted and LOW otherwise. Unlike open-drain supervisors such as the ISL88002, the ISL88003IH23Z-T7A requires no external pull-up resistor, simplifying layout and reducing component count.
What is the minimum supply voltage at which the ISL88003IH23Z-T7A remains functional?
The ISL88003IH23Z-T7A asserts valid reset down to VDD = 1V, as specified in the Functional Block Diagrams (page 2) and Absolute Maximum Ratings (page 8). Its POR circuit activates at 1V, and the reset signal remains asserted until VDD rises above 2.32V and sustains for the tPOR timeout period.
Which package type does the ISL88003IH23Z-T7A use?
The ISL88003IH23Z-T7A uses a 3-lead SOT-23 package (Pb-free, JEDEC TO-236 compliant), as indicated by "H" in the part number suffix and confirmed in the Ordering Information table (page 7, PKG. DWG. # P3.064). This differs from SC-70 variants denoted by "E".
How does the ISL88003IH23Z-T7A differ from the ISL88001 and ISL88002 families?
The ISL88003IH23Z-T7A is distinguished by its push-pull active-high RST output, whereas ISL88001 also uses push-pull but active-low, and ISL88002 uses open-drain active-low. All three share identical 2.32V threshold, 160nA current, and SOT-23/SC-70 packaging options, but output logic polarity and drive architecture differ per family.
ISL88003IH23Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ISL88003IH23Z-T7A FAQ
1.How can I place an order for ISL88003IH23Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88003IH23Z-T7A 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 ISL88003IH23Z-T7A reliable?
The price and inventory of ISL88003IH23Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88003IH23Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88003IH23Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88003IH23Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88003IH23Z-T7A?
ISL88003IH23Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88003IH23Z-T7A 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 ISL88003IH23Z-T7A?
For technical support, including ISL88003IH23Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88003IH23Z-T7A requirements.
6.How does Aetrix verify that ISL88003IH23Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88003IH23Z-T7A 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 ISL88003IH23Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88003IH23Z-T7A?
All ISL88003IH23Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88003IH23Z-T7A, 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 ISL88003IH23Z-T7A part is unused and in its original packaging.
Return procedure for ISL88003IH23Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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