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Renesas ISL88001IH29Z-T
- Part No.:
- ISL88001IH29Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH29Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,882
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Product details
Overview
ISL88001IH29Z-T from Renesas Electronics is an ultra-low-power 3-lead voltage supervisor IC with push-pull active-low reset output, 2.92V fixed threshold (±1.2% accuracy), 160nA supply current, and 190ms power-on reset timeout. It monitors VDD in microcontroller systems where reliable brownout detection and low-quiescent-current supervision are critical.
For engineers reviewing the ISL88001IH29Z-T datasheet, ISL88001IH29Z-T pinout, ISL88001IH29Z-T application, or ISL88001IH29Z-T equivalent, this page delivers verified specifications, package mapping, functional context, and real-world use cases for industrial and portable embedded designs.
Technical Context
The ISL88001IH29Z-T implements a precision bandgap-based voltage reference and comparator circuit to monitor VDD against a factory-trimmed 2.92V trip point. Reset assertion occurs when VDD falls below threshold or during initial power-up at VDD ≥ 1V, ensuring system initialization integrity.
It features built-in hysteresis (1%) to prevent noise-induced reset chatter and guarantees valid reset signaling down to VDD = 1V. The push-pull RST output drives directly without external pull-up, simplifying interface with µP/µC reset inputs requiring active-low assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.92V ±1.2% - ensures accurate detection of 3.0V rail brownout before logic failure |
| Supply Current | 160nA typical - enables multi-year battery life in always-on monitoring applications |
| POR Timeout | 190ms nominal - holds reset long enough for 3.0V rail stabilization and µC internal register load |
| Operating Voltage Range | 1.8V to 5.5V - supports supervision of 3.0V, 3.3V, and 5.0V rails with same device |
| Reset Output Type | Active-low push-pull - eliminates need for external pull-up resistor, reduces BOM count |
| Valid Reset Down To | VDD = 1V - guarantees reset assertion even during deep undervoltage conditions |
| Temperature Range | -40°C to +85°C - qualified for industrial ambient environments |
Pinout & Package
ISL88001IH29Z-T is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), measuring 2.92mm × 1.30mm × 1.00mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset driver; must be connected to system ground plane |
| 2 | RST | Active-low push-pull reset output; sinks current when asserted, sources current when deasserted |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC and serves as analog input to threshold detector |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.92V threshold | Enables precise supervision of 3.0V logic rails without external resistor network calibration |
| 160nA quiescent current | Reduces standby power draw by >90% vs. legacy supervisors, critical for coin-cell-powered devices |
| 190ms POR timeout | Guarantees sufficient hold time for FPGA configuration load and µC oscillator startup |
| Push-pull RST output | Eliminates external pull-up resistor, reducing component count and layout area |
| 1% hysteresis | Prevents oscillatory reset behavior near threshold due to supply ripple or noise |
Applications
| Microcontroller Power-Up Sequencing | Battery-Powered Sensor Node Supervision |
|---|---|
Use Scenario: Ensuring clean boot of ARM Cortex-M0+ MCU after Li-ion battery wake-up from deep sleep. IC Role / Device Role / Timing Role: Monitors 3.0V LDO output and asserts active-low reset until rail stabilizes above 2.92V for ≥190ms. Use Value: Prevents corrupted firmware execution caused by premature clock enable or memory access during undervoltage. | Use Scenario: Maintaining reliable operation of BLE-enabled environmental sensor in remote field deployment. IC Role / Device Role / Timing Role: Supervises 3.0V supply derived from buck-boost converter; resets system if battery drops below 3.0V threshold. Use Value: Extends usable battery life by enabling graceful shutdown before data corruption or EEPROM write failure. |
| Industrial PLC I/O Module | Handheld Medical Diagnostic Device |
Use Scenario: Protecting programmable logic controller modules from brownout-induced state loss during factory power fluctuations. IC Role / Device Role / Timing Role: Provides fail-safe reset signal to FPGA-based control logic whenever 3.3V auxiliary rail dips below 2.92V. Use Value: Eliminates spurious I/O toggling and maintains deterministic state machine behavior under noisy 24VDC supply conditions. | Use Scenario: Securing boot integrity of FDA-cleared handheld ECG analyzer powered by rechargeable LiPo cell. IC Role / Device Role / Timing Role: Detects 3.0V system rail collapse during battery swap or low-charge condition and forces controlled shutdown. Use Value: Meets IEC 62304 safety requirement for predictable fault response and prevents unsafe measurement output during undervoltage. |
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 threshold (±2.5%), 1.2µA supply current, SOT-23-3, open-drain RST | Requires external pull-up; higher current draw limits battery life in ultra-low-power designs | Select MAX809SUR+T only if open-drain interface compatibility with legacy reset bus is required |
| TPS3801K33DBVR | 3.08V threshold (±0.5%), 1.8µA supply current, SOT-23-3, push-pull RST | Higher threshold and current make it unsuitable for tight 3.0V margin or multi-year battery operation | Choose TPS3801K33DBVR only when tighter threshold tolerance is prioritized over quiescent power |
Compared with MAX809SUR+T and TPS3801K33DBVR, the ISL88001IH29Z-T delivers superior energy efficiency (160nA vs. >1µA) and tighter threshold accuracy (±1.2% vs. ±2.5% or ±0.5%) within the same SOT-23 footprint-making it optimal for space-constrained, battery-sensitive industrial and medical edge devices.
Availability
ISL88001IH29Z-T is available at Aetrix Electronics and suitable for microcontroller reset sequencing, battery-powered sensor nodes, industrial PLC modules, and handheld medical diagnostics requiring stable component supply across extended production lifecycles.
Supply support for ISL88001IH29Z-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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, engineered specifically for reliable power-on reset and brownout protection in battery-operated and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of ISL88001IH29Z-T and how tightly is it specified?
The ISL88001IH29Z-T has a nominal reset threshold of 2.92V, specified with ±1.2% accuracy over the full -40°C to +85°C temperature range. At +25°C, the typical value is 2.925V, with min/max bounds of 2.850V and 3.000V. This precision enables robust supervision of 3.0V rails without margin risk.
Does ISL88001IH29Z-T require an external pull-up resistor on the RST pin?
No, ISL88001IH29Z-T does not require an external pull-up resistor because it features a push-pull active-low RST output. The internal driver actively pulls RST low during reset assertion and high (to VDD) when deasserted-eliminating external components and simplifying design.
What is the minimum supply voltage at which ISL88001IH29Z-T can assert a valid reset signal?
The ISL88001IH29Z-T guarantees valid reset assertion down to VDD = 1V. This capability ensures reliable brownout detection even during severe undervoltage events, allowing the host microcontroller to enter safe shutdown before logic corruption occurs.
How long does the power-on reset pulse last for ISL88001IH29Z-T?
The ISL88001IH29Z-T provides a nominal power-on reset timeout of 190ms. The datasheet specifies tPOR between 140ms and 260ms over temperature, ensuring sufficient hold time for microcontroller oscillator stabilization, register initialization, and FPGA configuration loading.
Is ISL88001IH29Z-T compatible with standard SOT-23 footprints and reflow profiles?
Yes, ISL88001IH29Z-T uses a standard 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064) and is RoHS-compliant with 100% matte tin (e3) termination. It supports standard Pb-free reflow profiles per IPC/JEDEC J-STD-020 and is MSL Level 1 rated for unlimited floor life.
ISL88001IH29Z-T 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:
- 2.925V
- Output:
- Push-Pull, Totem Pole
- 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
ISL88001IH29Z-T FAQ
1.How can I place an order for ISL88001IH29Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH29Z-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 ISL88001IH29Z-T reliable?
The price and inventory of ISL88001IH29Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH29Z-T is usually 5 days.
3.What payment methods are accepted for ISL88001IH29Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH29Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH29Z-T?
ISL88001IH29Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH29Z-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 ISL88001IH29Z-T?
For technical support, including ISL88001IH29Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH29Z-T requirements.
6.How does Aetrix verify that ISL88001IH29Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88001IH29Z-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 ISL88001IH29Z-T meets industry standards.
7.What is the process for return or replacement of ISL88001IH29Z-T?
All ISL88001IH29Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH29Z-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 ISL88001IH29Z-T part is unused and in its original packaging.
Return procedure for ISL88001IH29Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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