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Renesas ISL88001IH46Z-TK
- Part No.:
- ISL88001IH46Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH46Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,202
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Product details
Overview
ISL88001IH46Z-TK 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 monitors VDD in microcontroller systems to ensure reliable boot-up and brownout protection during battery-powered operation.
For engineers reviewing the ISL88001IH46Z-TK datasheet, ISL88001IH46Z-TK pinout, ISL88001IH46Z-TK application, or ISL88001IH46Z-TK equivalent, key selection considerations include its push-pull active-low RST output, 1 V minimum valid reset assertion voltage, SC-70/SOT-23 package compatibility, and direct functional alignment with legacy supervisors like MAX809.
Technical Context
The ISL88001IH46Z-TK implements a precision bandgap-based voltage reference comparator with internal hysteresis to prevent noise-induced reset chatter. Its POR circuit asserts reset at VDD ≥ 1 V and holds it for 190 ms after VDD exceeds the 4.62 V trip point.
It operates across –40°C to +85°C with no external components required. The push-pull RST output drives high (VDD – 0.4 V) when deasserted and low (≤0.4 V) when asserted, eliminating need for external pull-up resistors unlike open-drain variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V ±1.2% - precisely monitors 5 V rail brownout with guaranteed margin before system failure. |
| Supply Current | 160 nA typical - enables multi-year battery life in always-on portable instrumentation. |
| POR Timeout | 190 ms - ensures stable clock and register initialization before microcontroller release. |
| Valid Reset Voltage | Down to VDD = 1 V - guarantees reset assertion even during deep undervoltage conditions. |
| Output Type | Push-pull active-low - directly interfaces with µP reset inputs without external pull-up or level-shifting. |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive under-hood environments. |
| Package | 3-lead SOT-23 - footprint-compatible with legacy supervisors and supports high-density PCB layouts. |
Pinout & Package
ISL88001IH46Z-TK is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236), with 0.95 mm lead pitch, 2.92 mm × 1.30 mm body size, and 1.00 mm height. Thermal resistance θJA = 590°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset logic; must be connected to system ground plane. |
| 2 | RST | Active-low push-pull reset output; sinks current when asserted (≤0.4 V), sources current when deasserted (VDD – 0.4 V). |
| 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 4.62 V threshold | Matches standard 5 V supply tolerance (±5%) with ±1.2% accuracy over temperature - eliminates calibration overhead. |
| 160 nA quiescent current | Reduces standby power by >90% vs. legacy supervisors - critical for coin-cell–powered IoT sensors. |
| 190 ms POR timeout | Guarantees sufficient time for oscillator stabilization and register loading before µP exit from reset. |
| No external components | Self-contained supervision - removes BOM cost, layout area, and reliability risk of external RC networks. |
| Immunity to transients | Hysteresis and internal filtering suppress false resets from fast supply glitches or ESD events. |
Applications
| Microprocessor Power-Up Control | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Ensuring safe boot sequence for ARM Cortex-M microcontrollers in handheld test equipment. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection on the 5 V main rail. Use Value: Prevents corrupted firmware execution by holding µP in reset until VDD stabilizes above 4.62 V for 190 ms. |
Use Scenario: Long-life data logging in remote environmental sensors powered by CR2032 batteries. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor monitoring declining battery voltage. Use Value: 160 nA supply current extends usable battery life beyond 10 years while maintaining accurate 4.62 V trip point. |
| Industrial PLC I/O Module | Medical Point-of-Care Device |
Use Scenario: Reliable reset signaling in DIN-rail mounted programmable logic controllers exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Industrial-grade voltage monitor ensuring deterministic reset behavior from –40°C to +85°C. Use Value: ±1.2% threshold accuracy and 1 V minimum reset validity guarantee robust operation during cold-start and brownout events. |
Use Scenario: Patient-monitoring wearable with strict safety-critical reset requirements and compact form factor. IC Role / Device Role / Timing Role: Compact SOT-23 supervisor enabling space-constrained PCB design while meeting IEC 62304 Class B software safety. Use Value: Push-pull RST output eliminates external resistor, reducing component count and improving long-term reliability in sterilizable assemblies. |
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, 1.6 µA supply current, SOT-23-3 package. | Higher quiescent current limits battery life; wider threshold tolerance reduces brownout margin. | Select when legacy MAX809 footprint compatibility is mandatory and ultra-low power is not required. |
| TPS3808G33DBVR | 3.3 V threshold (not 4.62 V), adjustable delay, 1.1 µA supply current, SOT-23-6 package. | Incorrect threshold for 5 V rail monitoring; larger package and different pinout require PCB redesign. | Choose only if system uses 3.3 V supply and programmable delay is needed - not a drop-in replacement. |
Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88001IH46Z-TK delivers superior threshold accuracy and 10× lower supply current in the same SOT-23-3 footprint, making it optimal for precision 5 V rail supervision in energy-constrained designs.
Availability
ISL88001IH46Z-TK is available at Aetrix Electronics and suitable for microcontroller systems, portable instrumentation, and industrial control applications requiring stable component supply and long-term manufacturability.
Supply support for ISL88001IH46Z-TK 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 high-performance, low-power microcontrollers, analog, and power management solutions for industrial, automotive, and IoT markets.
The ISL88001IH46Z-TK belongs to Renesas' ultra-low-power voltage supervisor family, designed specifically to replace legacy reset ICs in space- and energy-constrained embedded systems while improving accuracy and reliability.
FAQ
What is the exact reset threshold voltage of the ISL88001IH46Z-TK?
The ISL88001IH46Z-TK 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 value is factory-trimmed and applies specifically to the ISL88001IH46Z-TK variant, not the broader ISL88001 family.
Does the ISL88001IH46Z-TK require external components for basic operation?
No, the ISL88001IH46Z-TK requires no external components for standard voltage supervision and power-on reset functionality. Its push-pull RST output eliminates the need for an external pull-up resistor, and internal hysteresis prevents noise-induced false resets - all confirmed in the FN6174 datasheet for ISL88001IH46Z-TK.
Is the ISL88001IH46Z-TK pin-compatible with MAX809?
Yes, the ISL88001IH46Z-TK is pin-compatible with MAX809 in the SOT-23-3 package and provides identical pinout (GND, RST, VDD) and push-pull active-low reset behavior. Renesas explicitly states this compatibility in the FN6174 datasheet "Features" section for ISL88001IH46Z-TK.
What is the minimum supply voltage at which ISL88001IH46Z-TK asserts reset?
The ISL88001IH46Z-TK asserts reset down to VDD = 1 V, as verified in the "Features" and "Principles of Operation" sections of the FN6174 datasheet. This ensures reliable reset signaling even during severe brownout or battery depletion scenarios affecting the ISL88001IH46Z-TK.
What is the power-on reset timeout duration for ISL88001IH46Z-TK?
The ISL88001IH46Z-TK features a fixed 190 ms power-on reset timeout (tPOR), consistent across operating conditions. This value is derived from the typical 144 ms shown in Figure 3 of FN6174 and the 140–260 ms min/max range in the Electrical Specifications table - all applicable to ISL88001IH46Z-TK.
ISL88001IH46Z-TK 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-TK FAQ
1.How can I place an order for ISL88001IH46Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH46Z-TK 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-TK reliable?
The price and inventory of ISL88001IH46Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH46Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88001IH46Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH46Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH46Z-TK?
ISL88001IH46Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH46Z-TK 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-TK?
For technical support, including ISL88001IH46Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH46Z-TK requirements.
6.How does Aetrix verify that ISL88001IH46Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88001IH46Z-TK 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-TK meets industry standards.
7.What is the process for return or replacement of ISL88001IH46Z-TK?
All ISL88001IH46Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH46Z-TK, 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-TK part is unused and in its original packaging.
Return procedure for ISL88001IH46Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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