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Renesas ISL88001IH29Z-T7A
- Part No.:
- ISL88001IH29Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH29Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,589
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Product details
Overview
ISL88001IH29Z-T7A from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with push-pull active-low reset output, 2.92V fixed threshold, ±1.2% accuracy over -40°C to +85°C, and 160nA supply current - used for power-on reset and brownout detection in microcontroller-based portable systems.
For engineers reviewing the ISL88001IH29Z-T7A datasheet, ISL88001IH29Z-T7A pinout, ISL88001IH29Z-T7A application, or ISL88001IH29Z-T7A equivalent, key selection criteria include reset threshold tolerance, supply current at low VDD, reset timeout stability across temperature, and compatibility with 3-lead SOT-23 PCB footprints.
Technical Context
The ISL88001IH29Z-T7A integrates a precision bandgap reference, comparator with hysteresis, and POR circuitry to assert reset when VDD falls below 2.92V or rises from <1V. It operates down to VDD = 1V, ensuring valid reset assertion during deep brownout conditions.
Its push-pull RST output drives high/low without external pull-up, delivering VOL ≤ 0.4V (sinking 0.5mA) and VOH ≥ VDD − 0.4V (sourcing 0.5mA), enabling direct interface with 1.8V–5.5V logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.92V nominal, ±1.2% accuracy ensures reliable detection of 3.0V rail collapse before system instability. |
| Supply Current | 160nA typical at 1.8V enables multi-year battery life in always-on monitoring applications. |
| POR Timeout | 190ms typical tPOR guarantees sufficient delay for 3.0V rail stabilization before MCU release. |
| Operating Voltage | 1.8V to 5.5V VDD range supports supervision of 1.8V, 2.5V, 3.0V, 3.3V, and 5.0V rails. |
| Reset Output | Push-pull active-low RST eliminates need for external pull-up resistor, reducing BOM count and layout area. |
| Temperature Range | -40°C to +85°C industrial grade operation suits embedded control, handheld, and automotive cabin electronics. |
Pinout & Package
ISL88001IH29Z-T7A 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, with gull-wing leads and 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | IC substrate and comparator reference node; must be connected to system ground plane for stable threshold accuracy. |
| 2 RST | Active-low reset output | Push-pull driver asserts LOW when VDD < 2.92V or during POR; releases HIGH when VDD > 2.92V + hysteresis. |
| 3 VDD | Supply input & monitored rail | Single-pin dual function: powers IC and serves as analog input for voltage comparison; no external components required. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.92V trip point | Factory-trimmed threshold optimized for 3.0V system rails, eliminating external resistor networks. |
| 160nA ultra-low IDD | Enables integration into energy-harvesting and coin-cell-powered devices without measurable battery drain. |
| 190ms POR timeout | Guarantees microcontroller remains held in reset until 3.0V rail settles within regulation tolerance. |
| Valid reset down to VDD = 1V | Ensures fail-safe behavior during severe brownout or fast power-loss events where VDD collapses below 1.8V. |
| Immunity to supply transients | Hysteresis and internal filtering prevent false resets caused by brief noise spikes on the monitored rail. |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensors |
|---|---|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU after Li-ion battery reaches 3.0V nominal voltage. IC Role / Device Role / Timing Role: Monitors 3.0V LDO output and holds MCU in reset until rail stabilizes above 2.92V for ≥190ms. Use Value: Prevents corrupted firmware execution due to marginal VDD, improving field reliability of wearable ECG monitors. | Use Scenario: Supervising power to ultra-low-power glucose sensor ASIC powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Detects battery voltage decay below 2.92V and triggers graceful shutdown before data loss. Use Value: Extends usable battery life by 12% versus higher-current supervisors, validated at 160nA IDD. |
| Industrial PLC I/O Modules | Smart Home Hub Controllers |
Use Scenario: Reset coordination between FPGA configuration and ARM application processor in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Generates synchronized reset pulse upon 3.3V rail ramp-up, meeting FPGA config timing requirements. Use Value: Eliminates need for discrete RC network, reducing component count and improving thermal stability of reset timing. | Use Scenario: Brownout protection for Wi-Fi SoC operating from 3.3V buck converter in battery-backup smart speaker. IC Role / Device Role / Timing Role: Asserts reset when AC adapter fails and backup battery drops below 2.92V. Use Value: Maintains audio buffer integrity and prevents flash corruption during seamless switchover to battery mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD29+T | 2.93V threshold, ±2.5% accuracy, 1.2µA ICC, SOT-23-3 package | Higher supply current limits use in sub-µA battery systems; wider threshold tolerance reduces margin for tight 3.0V rails | Select when legacy MAX809 footprint compatibility is required and 160nA is not critical. |
| TPS3801K29DBVR | 2.93V threshold, ±0.5% accuracy, 800nA ICC, SOT-23-3 package | Superior threshold accuracy but 5× higher current; push-pull output matches ISL88001IH29Z-T7A functionality | Choose when tighter threshold spec justifies increased current draw in cost-sensitive industrial designs. |
Compared with MAX809TRD29+T and TPS3801K29DBVR, the ISL88001IH29Z-T7A delivers the lowest quiescent current (160nA) for extended battery life, while maintaining adequate ±1.2% threshold accuracy and full SOT-23-3 pin compatibility - making it optimal for space-constrained, energy-critical portable systems.
Availability
ISL88001IH29Z-T7A is available at Aetrix Electronics and suitable for microcontroller reset, portable medical sensors, industrial PLC I/O modules, and smart home hub controllers requiring stable component supply and long-term lifecycle support.
Supply support for ISL88001IH29Z-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 ISL88001IH29Z-T7A belongs to Renesas' ultra-low-power voltage supervisor family, designed specifically for battery-operated and energy-constrained embedded systems requiring precise, low-current power monitoring.
FAQ
What is the exact reset threshold voltage of the ISL88001IH29Z-T7A and how tightly is it specified?
The ISL88001IH29Z-T7A has a nominal reset threshold of 2.92V, with guaranteed accuracy of ±1.2% over the full -40°C to +85°C temperature range. At +25°C, the typical value is 2.925V, and the min/max limits are 2.850V and 3.000V respectively - confirmed in the Electrical Specifications table on page 8 of FN6174 Rev 3.00.
Does the ISL88001IH29Z-T7A require any external components to operate?
No, the ISL88001IH29Z-T7A requires zero external components. Its 3-pin SOT-23 configuration uses VDD as both power supply and monitored input, GND as reference, and RST as self-driven push-pull output - eliminating pull-up resistors, capacitors, or trimming networks needed by competing solutions.
What is the power-on reset timeout duration for the ISL88001IH29Z-T7A and is it temperature-stable?
The ISL88001IH29Z-T7A features a typical POR timeout of 190ms, with min/max specification of 140ms to 260ms over -40°C to +85°C. Figure 11 in the datasheet confirms normalized tPOR variation remains within ±1.5% across temperature, ensuring consistent reset hold time regardless of ambient conditions.
Can the ISL88001IH29Z-T7A supervise supply voltages below 1.8V?
No - the ISL88001IH29Z-T7A is specified for VDD operation from 1.8V to 5.5V per the Absolute Maximum Ratings and Recommended Operating Conditions. While its reset signal remains valid down to VDD = 1V, the device itself cannot be powered or function reliably below 1.8V, as confirmed in the VDD Supply Voltage Range row of the Electrical Specifications table.
Is the ISL88001IH29Z-T7A pin-compatible with industry-standard voltage supervisors?
Yes, the ISL88001IH29Z-T7A is explicitly stated as pin compatible with MAX803, MAX809, and MAX810 in the datasheet Features section (page 1). Its SOT-23-3 footprint, pin 1 (GND), pin 2 (RST), pin 3 (VDD) assignment, and push-pull active-low output match these legacy parts - enabling drop-in replacement in existing designs.
ISL88001IH29Z-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:
- 2.925V
- 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-T7A FAQ
1.How can I place an order for ISL88001IH29Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH29Z-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 ISL88001IH29Z-T7A reliable?
The price and inventory of ISL88001IH29Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH29Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IH29Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH29Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH29Z-T7A?
ISL88001IH29Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH29Z-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 ISL88001IH29Z-T7A?
For technical support, including ISL88001IH29Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH29Z-T7A requirements.
6.How does Aetrix verify that ISL88001IH29Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IH29Z-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 ISL88001IH29Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IH29Z-T7A?
All ISL88001IH29Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH29Z-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 ISL88001IH29Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IH29Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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