My Inquiry
My Account
Renesas ISL88001IH44Z-T7A
- Part No.:
- ISL88001IH44Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH44Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:478
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL88001IH44Z-T7A from Renesas Electronics is an ultra-low-power 3-lead voltage supervisor IC with push-pull active-low reset output, 4.38V fixed threshold, ±1.2% accuracy, 190ms power-on reset timeout, and operation down to VDD = 1V. It monitors single supply rails in microcontroller-based systems requiring reliable brownout detection and POR functionality.
For engineers reviewing the ISL88001IH44Z-T7A datasheet, ISL88001IH44Z-T7A pinout, ISL88001IH44Z-T7A application, or ISL88001IH44Z-T7A equivalent, key selection criteria include reset threshold tolerance, supply current at low VDD, reset assertion timing under brownout, and compatibility with SOT-23 footprint constraints in space-constrained portable designs.
Technical Context
The ISL88001IH44Z-T7A implements a precision bandgap reference and comparator architecture to detect falling VDD against its factory-trimmed 4.38V trip point with ±1.2% initial accuracy and 0.48mV/°C temperature coefficient. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it for 190ms after VDD exceeds threshold.
This device operates as a standalone supervisory element with no external components required. Its push-pull RST output drives directly into microcontroller reset inputs without pull-up resistors, distinguishing it from open-drain variants like ISL88002 and enabling deterministic logic-level signaling across full VDD range (1.8V–5.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal, ±1.2% accuracy ensures precise detection of 4.38V rail collapse without false triggers. |
| Supply Current | 160nA typical at VDD = 1.8V enables multi-year battery life in always-on monitoring applications. |
| POR Timeout | 190ms minimum delay guarantees microcontroller remains held in reset until power stabilizes post-power-up. |
| Valid Reset Range | Reset signal functional down to VDD = 1V supports operation during deep brownout conditions. |
| Output Type | Push-pull active-low RST eliminates need for external pull-up resistor and ensures fast, rail-to-rail logic transitions. |
| Operating Temp | -40°C to +85°C industrial range suits embedded control, instrumentation, and portable equipment environments. |
| Package | 3-lead SOT-23 (Pb-free, RoHS compliant) provides standard footprint with 0.95mm pitch and 2.92mm × 1.30mm body size. |
Pinout & Package
ISL88001IH44Z-T7A is housed in a 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), with 0.95mm lead pitch, 2.92mm × 1.30mm body dimensions, and 0.435mm maximum height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset driver; must be connected to system ground plane for accurate threshold sensing. |
| 2 | RST | Active-low push-pull reset output; sinks current when asserted (LOW), sources current when deasserted (HIGH); directly interfaces µP reset input. |
| 3 | VDD | Power supply input and monitored voltage source; supplies internal circuitry while simultaneously providing the sensed rail for threshold comparison. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 160nA typical enables integration into energy-harvesting and coin-cell-powered systems without measurable battery drain. |
| High threshold accuracy | ±1.2% over temperature ensures consistent reset behavior across industrial range without calibration. |
| No external components | Self-contained design eliminates BOM cost and PCB area for RC networks or pull-up resistors. |
| Immunity to transients | Internal hysteresis and filtering prevent false resets during short-duration supply noise or ripple events. |
| Pb-free SOT-23 package | RoHS-compliant 3-lead SOT-23 (P3.064) supports automated assembly and meets global environmental requirements. |
Applications
| Microprocessor Power-Up Control | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Ensuring safe initialization of ARM Cortex-M microcontrollers after cold start or wake-from-sleep. IC Role / Device Role / Timing Role: Voltage supervisor providing Power-On Reset (POR) and brownout detection on the 3.3V or 4.38V main supply rail. Use Value: 190ms POR timeout prevents code execution before regulator stabilization and clock lock, eliminating boot failures. | Use Scenario: Monitoring Li-ion battery voltage in handheld test meters to prevent data corruption during discharge below 3.6V. IC Role / Device Role / Timing Role: Single-rail supervisor asserting active-low reset when battery drops below 4.38V threshold. Use Value: 160nA supply current extends usable battery life by >2 years in sleep-mode operation. |
| Industrial Controller Supervision | Portable Medical Device Safety |
Use Scenario: Protecting PLC I/O modules from erratic behavior during AC line sags or DC supply fluctuations. IC Role / Device Role / Timing Role: Fault-tolerant reset generator monitoring 5V system rail with ±1.2% threshold accuracy. Use Value: Valid reset assertion down to VDD = 1V ensures fail-safe shutdown even during severe brownouts. | Use Scenario: Enabling safe power sequencing in portable ECG monitors powered by dual AA cells (3.0V nominal). IC Role / Device Role / Timing Role: Supervisor on regulated 4.38V intermediate rail, triggering controlled shutdown before critical analog front-end undervoltage. Use Value: Push-pull RST output eliminates external pull-up, reducing component count and improving noise immunity in sensitive analog environments. |
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, 1.6µA supply current, SOT-23-3 package | Higher threshold and looser accuracy; higher current limits use in ultra-low-power designs | Select MAX809SUR+T only if 4.63V trip point matches system rail and higher supply current is acceptable. |
| TPS3801K33DBVR | 3.3V threshold, ±2.0% accuracy, 1.8µA supply current, SOT-23-3 package | Different threshold; not suitable for 4.38V rail monitoring without redesign | Choose TPS3801K33DBVR only for 3.3V systems; requires board-level change for voltage match. |
Compared with MAX809SUR+T and TPS3801K33DBVR, the ISL88001IH44Z-T7A delivers tighter threshold accuracy (±1.2% vs ±2.0–2.5%), lower supply current (160nA vs ~1.6–1.8µA), and exact 4.38V trip matching common 4.5V-class rails-making it optimal for precision, battery-sensitive applications where drop-in replacement is not required but performance is critical.
Availability
ISL88001IH44Z-T7A is available at Aetrix Electronics and suitable for microcontroller power-up control, battery-powered instrumentation, and industrial controller supervision requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ISL88001IH44Z-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 high-performance analog, mixed-signal, and embedded processing solutions for automotive, industrial, and IoT markets.
The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, engineered specifically for reliable power monitoring in space- and energy-constrained portable and embedded systems.
FAQ
What is the reset threshold voltage of the ISL88001IH44Z-T7A?
The ISL88001IH44Z-T7A has a nominal reset threshold voltage of 4.38V, with ±1.2% accuracy over the -40°C to +85°C temperature range. This value is factory-trimmed and specified in the Electrical Specifications table of the FN6174 datasheet. The device asserts its active-low RST output when VDD falls below this threshold and releases it after VDD rises above the threshold plus hysteresis for the 190ms POR timeout period.
Does the ISL88001IH44Z-T7A require external components for operation?
No, the ISL88001IH44Z-T7A operates autonomously with no external components required. Its internal precision reference, comparator, and push-pull reset driver eliminate the need for external resistors, capacitors, or pull-up networks. This simplifies design, reduces BOM cost, and improves reliability-confirmed in the "Features" section and "Principles of Operation" of the FN6174 datasheet.
What is the supply current consumption of the ISL88001IH44Z-T7A at 1.8V VDD?
At VDD = 1.8V and nominal 4.38V threshold setting, the ISL88001IH44Z-T7A consumes 160nA typical supply current, as specified in the Electrical Specifications table (IDD parameter). This ultra-low quiescent current enables multi-year operation in battery-backed or energy-harvesting applications where standby power budget is critical.
Is the ISL88001IH44Z-T7A pin-compatible with MAX809-series supervisors?
Yes, the ISL88001IH44Z-T7A is pin-compatible with MAX803, MAX809, and MAX810 in the same 3-lead SOT-23 package, as explicitly stated in the "Features" section of the FN6174 datasheet. However, note that ISL88001IH44Z-T7A has a 4.38V threshold and 160nA supply current, whereas MAX809 has 4.63V and ~1.6µA-so electrical substitution requires validation of threshold and current requirements.
What is the minimum VDD voltage at which the ISL88001IH44Z-T7A can assert a valid reset signal?
The ISL88001IH44Z-T7A asserts a valid reset signal down to VDD = 1V, as confirmed in the "Features" and "Electrical Specifications" sections of the FN6174 datasheet. This capability ensures fail-safe operation during deep brownout conditions where other supervisors may lose functionality, making it suitable for robust power monitoring in unpredictable supply environments.
ISL88001IH44Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- 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
ISL88001IH44Z-T7A FAQ
1.How can I place an order for ISL88001IH44Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH44Z-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 ISL88001IH44Z-T7A reliable?
The price and inventory of ISL88001IH44Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH44Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IH44Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH44Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH44Z-T7A?
ISL88001IH44Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH44Z-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 ISL88001IH44Z-T7A?
For technical support, including ISL88001IH44Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH44Z-T7A requirements.
6.How does Aetrix verify that ISL88001IH44Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IH44Z-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 ISL88001IH44Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IH44Z-T7A?
All ISL88001IH44Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH44Z-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 ISL88001IH44Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IH44Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL88001IH44Z-T7A Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
