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Renesas ISL88001IH46Z-T7A
- Part No.:
- ISL88001IH46Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH46Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,774
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Product details
Overview
ISL88001IH46Z-T7A from Renesas Electronics is a 3-lead SOT-23 ultra-low-power voltage supervisor with 4.62 V fixed reset threshold, ±1.2% accuracy, 160 nA supply current, and 190 ms power-on reset timeout. It provides active-low push-pull reset assertion during power-up and brownout conditions in microcontroller-based portable systems.
For engineers reviewing the ISL88001IH46Z-T7A datasheet, ISL88001IH46Z-T7A pinout, ISL88001IH46Z-T7A application, or ISL88001IH46Z-T7A equivalent, key selection criteria include reset threshold tolerance, minimum operating voltage (1 V), package footprint compatibility, and absence of external components.
Technical Context
The ISL88001IH46Z-T7A implements a precision bandgap reference and comparator-based monitoring circuit with built-in hysteresis to prevent noise-induced reset chatter. Its POR circuit asserts reset at VDD = 1 V and holds it until VDD exceeds 4.62 V for ≥190 ms.
It operates across –40°C to +85°C, consumes only 160 nA at 1.8 V, and maintains reset validity down to VDD = 1 V - enabling reliable supervision in battery-powered systems where supply voltage may sag below nominal levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V ±1.2% - ensures accurate detection of 5 V rail undervoltage without calibration. |
| Supply Current | 160 nA typical - enables multi-year operation on coin-cell batteries in always-on monitoring. |
| POR Timeout | 190 ms - guarantees sufficient stabilization time for microcontrollers and FPGAs before release. |
| Min Valid VDD | 1 V - supports reset assertion even during deep brownout or low-battery cutoff. |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor, simplifying BOM and layout. |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive under-hood environments. |
| Package | 3-lead SOT-23 - standard footprint compatible with high-volume automated assembly. |
Pinout & Package
ISL88001IH46Z-T7A is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), measuring 2.92 mm × 1.30 mm × 1.00 mm with 0.95 mm lead pitch.
| 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 | Active-low push-pull reset output; drives LOW when VDD < 4.62 V or during POR; no external pull-up required. |
| 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 4.62 V threshold | Eliminates external resistor network; reduces component count and board area in 5 V system designs. |
| 160 nA supply current | Enables continuous supervision in energy-harvesting and battery-backed applications without measurable drain. |
| 1 V minimum operating voltage | Ensures reset remains valid during severe brownout, preventing erratic MCU behavior below nominal rails. |
| Push-pull RST output | Reduces external component count versus open-drain alternatives; improves noise immunity and rise/fall times. |
| ±1.2% threshold accuracy | Meets tight margin requirements for modern low-voltage logic without trimming or calibration. |
Applications
| Microprocessor Power-Up Control | Portable Medical Sensor Node |
|---|---|
Use Scenario: Ensuring clean boot sequence for ARM Cortex-M4 MCU powered from a buck converter with slow ramp-up. IC Role / Device Role / Timing Role: Voltage supervisor providing 190 ms POR delay and 4.62 V threshold monitoring on the 5 V input rail. Use Value: Prevents firmware execution before stable clock and memory initialization, eliminating boot failures. | Use Scenario: Battery-powered glucose monitor requiring guaranteed reset during Li-ion discharge from 4.2 V to 3.0 V. IC Role / Device Role / Timing Role: Low-current supervisor asserting reset when VDD falls below 4.62 V or drops to 1 V during deep discharge. Use Value: Maintains data integrity by halting measurement cycles before supply collapse corrupts ADC or flash writes. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Supervising auxiliary 5 V rail powering isolated CAN transceivers and digital isolators. IC Role / Device Role / Timing Role: Reset generator with hysteresis and noise immunity, ensuring robust operation in electrically noisy factory environments. Use Value: Prevents spurious resets caused by EFT bursts or conducted transients on the 5 V bus. | Use Scenario: Monitoring backup supercapacitor voltage during AC mains failure in a Class 0.5 electricity meter. IC Role / Device Role / Timing Role: Ultra-low-power supervisor detecting 4.62 V threshold crossing to trigger safe shutdown and RTC preservation. Use Value: Extends backup runtime by minimizing quiescent current while guaranteeing deterministic reset timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 4.63 V threshold, ±2.5% accuracy, 2.5 µA supply current, SOT-23-3 | Higher quiescent current limits use in multi-year battery applications | Select when legacy MAX809 footprint compatibility is required and higher IDD is acceptable. |
| TPS3808G33DBVR | 3.3 V threshold, adjustable via external resistor, 1.8 µA IDD, SOT-23-6 | Requires external resistor network and larger 6-pin package; not drop-in compatible | Choose only if adjustable threshold or tighter 0.5% accuracy is needed and board space allows 6-pin layout. |
Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88001IH46Z-T7A delivers 15× lower supply current and tighter threshold accuracy in the same 3-pin SOT-23 footprint - making it optimal for long-life, space-constrained 5 V supervision.
Availability
ISL88001IH46Z-T7A is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical devices, and industrial I/O modules requiring stable component supply with RoHS-compliant packaging and full traceability.
Supply support for ISL88001IH46Z-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 SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, designed specifically for battery-operated and energy-sensitive applications where minimal quiescent current and precise reset thresholds are critical.
FAQ
What is the exact reset threshold voltage of the ISL88001IH46Z-T7A?
The ISL88001IH46Z-T7A has a nominal reset threshold of 4.62 V with ±1.2% accuracy over –40°C to +85°C. At +25°C, the specified range is 4.570 V to 4.681 V. This fixed threshold is factory-trimmed and requires no external components.
Does the ISL88001IH46Z-T7A require an external pull-up resistor on the RST pin?
No, the ISL88001IH46Z-T7A features a push-pull RST output, so no external pull-up resistor is needed. The RST pin actively drives LOW during reset and HIGH otherwise, simplifying design and reducing BOM cost compared to open-drain alternatives like the ISL88002.
Can the ISL88001IH46Z-T7A operate reliably when VDD drops below 2 V?
Yes - the ISL88001IH46Z-T7A guarantees valid reset assertion down to VDD = 1 V. Its internal circuitry remains functional and the RST output remains asserted (LOW) even as the supply sags into deep brownout, ensuring deterministic behavior in low-battery scenarios.
What is the power-on reset timeout duration for the ISL88001IH46Z-T7A?
The ISL88001IH46Z-T7A provides a typical power-on reset timeout of 190 ms. The datasheet specifies a range of 140 ms to 260 ms over temperature, ensuring sufficient hold time for microcontrollers, FPGAs, and memory initialization before release.
Is the ISL88001IH46Z-T7A pin-compatible with other members of the ISL8800x family?
Yes - all ISL88001, ISL88002, and ISL88003 variants share identical 3-lead SOT-23 pinouts (GND, RST, VDD). The ISL88001IH46Z-T7A is functionally and physically interchangeable with other ISL88001 variants (e.g., ISL88001IH44Z-T7A), differing only in reset threshold voltage and output configuration.
ISL88001IH46Z-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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.625V
- 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
ISL88001IH46Z-T7A FAQ
1.How can I place an order for ISL88001IH46Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH46Z-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 ISL88001IH46Z-T7A reliable?
The price and inventory of ISL88001IH46Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH46Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IH46Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH46Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH46Z-T7A?
ISL88001IH46Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH46Z-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 ISL88001IH46Z-T7A?
For technical support, including ISL88001IH46Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH46Z-T7A requirements.
6.How does Aetrix verify that ISL88001IH46Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IH46Z-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 ISL88001IH46Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IH46Z-T7A?
All ISL88001IH46Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH46Z-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 ISL88001IH46Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IH46Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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