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Renesas ISL88001IH46Z-T
- Part No.:
- ISL88001IH46Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH46Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,059
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Product details
Overview
ISL88001IH46Z-T from Renesas is an ultra-low-power 3-pin voltage supervisor IC with push-pull active-low reset output, 4.62V fixed threshold, ±1.2% accuracy over -40°C to +85°C, 160nA supply current, and 190ms power-on reset timeout - used for reliable power-up sequencing and brownout protection in microcontroller-based portable systems.
For engineers reviewing the ISL88001IH46Z-T datasheet, ISL88001IH46Z-T pinout, ISL88001IH46Z-T application, or ISL88001IH46Z-T equivalent, key selection criteria include reset threshold tolerance, VDD operating range down to 1V, SC-70/SOT-23 package compatibility, and push-pull RST drive capability without external pull-up.
Technical Context
The ISL88001IH46Z-T implements a precision bandgap reference and comparator-based monitoring circuit that asserts reset when VDD falls below 4.62V (±1.2%) or rises above it after power-on, with built-in hysteresis to suppress noise-induced chatter. Its POR circuit activates at VDD = 1V to ensure early system hold-off.
It operates as a single-supply, single-threshold monitor with no external components required. The push-pull RST output drives high/low actively - eliminating need for pull-up resistors - and remains valid across full 1.8V–5.5V VDD range per device variant specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62V ±1.2% - ensures accurate detection of 5V rail undervoltage before system instability occurs. |
| Supply Current | 160nA typical - enables multi-year battery life in always-on supervisory applications. |
| POR Timeout | 190ms nominal - provides sufficient delay for 5V rail stabilization and microcontroller internal initialization. |
| Valid VDD Range | 1.8V to 5.5V - supports operation across wide input conditions while maintaining reset assertion down to VDD = 1V. |
| Output Type | Push-pull active-low RST - delivers rail-to-rail logic levels without external biasing components. |
| Temperature Range | -40°C to +85°C - qualified for industrial-grade embedded and portable equipment environments. |
| Package | 3-lead SOT-23 - surface-mount footprint compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
ISL88001IH46Z-T is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), with 0.95mm lead pitch, 2.92mm × 1.30mm body size, and 1.00mm max height - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal circuitry and reset output; must be connected to system ground plane for stable operation. |
| 2 | RST | Active-low push-pull reset output; sinks current during reset assertion and sources current when released - no external pull-up needed. |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC bias and serves as analog input to threshold comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.62V threshold | Matches standard 5V supply rails with ±1.2% accuracy - eliminates calibration overhead and reduces BOM count. |
| 160nA supply current | Enables integration into energy-harvesting and coin-cell-powered systems without measurable battery drain. |
| 190ms POR timeout | Guarantees microcontroller reset duration exceeds oscillator startup and register initialization times for reliable boot. |
| Reset valid down to VDD = 1V | Ensures fail-safe behavior during deep brownout or rapid power collapse - prevents partial execution or latch-up. |
| No external components | Reduces PCB area, assembly cost, and qualification effort - simplifies design-in and accelerates time-to-market. |
Applications
| Microprocessor Power Sequencing | Portable Medical Device Monitoring |
|---|---|
Use Scenario: Ensuring clean boot of ARM Cortex-M microcontrollers in handheld diagnostic tools powered by Li-ion batteries. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection on the main 3.3V/5V supply rail. Use Value: Prevents firmware corruption during low-battery shutdown by asserting reset before VDD drops below MCU operational minimum. | Use Scenario: Supervising dual-rail power in wearable ECG monitors where battery voltage decays gradually over weeks. IC Role / Device Role / Timing Role: Single-threshold monitor on 5V analog front-end supply, triggering system sleep mode upon undervoltage. Use Value: 160nA quiescent current extends usable battery life beyond 12 months without compromising supervision reliability. |
| Industrial PLC I/O Module | Smart Sensor Node |
Use Scenario: Protecting programmable logic controller digital I/O modules against 24V DC supply fluctuations in factory environments. IC Role / Device Role / Timing Role: Reset generator tied to isolated 5V local supply derived from 24V bus, ensuring deterministic startup after power interruption. Use Value: ±1.2% threshold accuracy avoids nuisance resets caused by normal line regulation variance, improving system uptime. | Use Scenario: Enabling autonomous wake-up and sensor sampling in LoRaWAN environmental nodes powered by solar harvesters. IC Role / Device Role / Timing Role: Supervisor on 3.3V regulated rail, holding MCU in reset until harvested energy reaches stable operating level. Use Value: Push-pull RST output directly interfaces with low-power MCU reset pin - no additional passives required for signal integrity. |
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 | 4.63V threshold, ±2.5% accuracy, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits use in ultra-low-power battery systems; same pinout but less precise trip point | Select MAX809SUR+T only if ±2.5% tolerance is acceptable and higher IDD does not impact system lifetime. |
| TPS3801K46DBVR | 4.6V threshold, ±0.5% accuracy, 1.8µA supply current, open-drain RST, SOT-23-3 | Superior accuracy but requires external pull-up resistor; incompatible RST drive architecture for push-pull-only interfaces | Choose TPS3801K46DBVR when highest threshold precision is critical and board layout allows pull-up component placement. |
Compared with MAX809SUR+T and TPS3801K46DBVR, ISL88001IH46Z-T uniquely combines ultra-low 160nA current, ±1.2% accuracy, and push-pull RST in SOT-23 - making it optimal for space- and energy-constrained designs where external components must be minimized.
Availability
ISL88001IH46Z-T is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical device monitoring, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88001IH46Z-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, and IoT markets.
The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, designed specifically for battery-operated and energy-sensitive embedded systems requiring high-accuracy, minimal-footprint power monitoring.
FAQ
What is the exact reset threshold voltage of ISL88001IH46Z-T and how tightly is it specified?
The ISL88001IH46Z-T has a nominal reset threshold of 4.62V, specified with ±1.2% accuracy across the full -40°C to +85°C temperature range. This corresponds to a guaranteed trip window of 4.50V to 4.75V at temperature extremes, enabling robust detection of 5V rail deviations without false triggers.
Does ISL88001IH46Z-T require any external components to operate correctly?
No, ISL88001IH46Z-T requires zero external components. Its push-pull RST output eliminates the need for pull-up resistors, and its internal precision reference and hysteresis circuitry enable standalone operation - reducing BOM count, PCB area, and qualification effort for ISL88001IH46Z-T implementations.
How does the power-on reset (POR) function behave for ISL88001IH46Z-T during initial power application?
The ISL88001IH46Z-T asserts reset when VDD reaches 1V during power-up and holds RST low for a nominal 190ms timeout. This ensures the host microcontroller remains held in reset until the 5V supply stabilizes and internal registers complete initialization - preventing erratic startup behavior in ISL88001IH46Z-T-based systems.
Can ISL88001IH46Z-T monitor supply voltages below 1.8V?
No - ISL88001IH46Z-T is rated for VDD operation between 1.8V and 5.5V per datasheet specifications. While its reset signal remains valid down to VDD = 1V for brownout detection, the device itself cannot be powered or function reliably below 1.8V. For sub-1.8V monitoring, alternate supervisors like ISL88001IH16Z-T (1.58V threshold) must be selected.
Is ISL88001IH46Z-T 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) and SC-70 footprints. ISL88001IH46Z-T can be substituted with ISL88002IH46Z-T or ISL88003IH46Z-T on the same PCB, provided RST output type (push-pull vs. open-drain vs. active-high push-pull) and system interface requirements are verified.
ISL88001IH46Z-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:
- 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-T FAQ
1.How can I place an order for ISL88001IH46Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH46Z-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 ISL88001IH46Z-T reliable?
The price and inventory of ISL88001IH46Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH46Z-T is usually 5 days.
3.What payment methods are accepted for ISL88001IH46Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH46Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH46Z-T?
ISL88001IH46Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH46Z-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 ISL88001IH46Z-T?
For technical support, including ISL88001IH46Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH46Z-T requirements.
6.How does Aetrix verify that ISL88001IH46Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88001IH46Z-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 ISL88001IH46Z-T meets industry standards.
7.What is the process for return or replacement of ISL88001IH46Z-T?
All ISL88001IH46Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH46Z-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 ISL88001IH46Z-T part is unused and in its original packaging.
Return procedure for ISL88001IH46Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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