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Renesas ISL88001IH22Z-T
- Part No.:
- ISL88001IH22Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH22Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
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Product details
Overview
ISL88001IH22Z-T from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with push-pull active-low reset output, 2.19V fixed threshold (±1.2% accuracy), 160nA supply current at 1.8V, and 190ms power-on reset timeout. It monitors VDD in battery-powered microcontroller systems where reliable brownout detection and minimal quiescent current are critical.
For engineers reviewing the ISL88001IH22Z-T datasheet, ISL88001IH22Z-T pinout, ISL88001IH22Z-T application, or ISL88001IH22Z-T equivalent, this device serves as a precision, low-current reset supervisor for 2.2V rail monitoring in space-constrained industrial and portable designs requiring guaranteed reset assertion down to VDD = 1V.
Technical Context
The ISL88001IH22Z-T implements a factory-programmed bandgap-based voltage reference comparator with hysteresis to prevent noise-induced reset chatter. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it until VDD exceeds 2.19V for ≥190ms, ensuring stable power-up sequencing.
This variant belongs to the ISL88001 family (push-pull RST) and uses the 3-lead SOT-23 package (P3.064). It operates across –40°C to +85°C and features no external components required-VDD, GND, and RST form the complete interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.19V ±1.2% - precisely monitors 2.2V supply rails with minimal drift over temperature (0.48 mV/°C). |
| Supply Current | 160nA at VDD = 1.8V - enables multi-year operation on coin-cell batteries without compromising supervision integrity. |
| POR Timeout | 190ms typical - ensures microcontrollers remain held in reset long enough for full power stabilization and oscillator startup. |
| Reset Valid Down To | VDD = 1V - guarantees functional reset assertion even during deep brownout or cold-start conditions. |
| Output Type | Active-low push-pull - drives RST directly to GND or VDD without external pull-up, simplifying PCB layout and reducing BOM count. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including automotive infotainment and smart sensors. |
| Package | 3-lead SOT-23 (P3.064) - 2.92mm × 1.30mm footprint compatible with high-density portable PCBs. |
Pinout & Package
ISL88001IH22Z-T is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236, drawing P3.064), with 0.95mm lead pitch and 1.00mm body height. The package supports both SnPb and Pb-free reflow profiles per J-STD-020 MSL1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | IC ground reference; must be connected to system ground plane for accurate threshold referencing and noise immunity. |
| 2 | RST | Active-low push-pull reset output; sinks current when asserted (RST = LOW), sources current when deasserted (RST = HIGH); no external pull-up needed. |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC bias and provides the sensed rail; requires local 0.1µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.19V threshold | Eliminates external resistor divider; reduces component count and layout sensitivity while maintaining ±1.2% accuracy over temperature. |
| 160nA supply current | Extends battery life in always-on IoT nodes and wearables by minimizing standby drain-critical for >5-year deployments. |
| 190ms POR timeout | Guarantees sufficient hold time for slow-ramping supplies and FPGA configuration before releasing processor reset. |
| Reset valid to 1V | Enables robust operation during severe undervoltage events, preventing erratic MCU behavior or data corruption. |
| No external components | Reduces bill-of-materials cost and PCB area; eliminates tuning, calibration, and reliability risks associated with discrete resistors/capacitors. |
Applications
| Microcontroller Power-Up Sequencing | Battery-Powered Sensor Nodes |
|---|---|
|
Use Scenario: A Cortex-M0+ MCU powers up from a lithium-thionyl chloride cell with slow voltage ramp and high internal impedance. IC Role / Device Role / Timing Role: ISL88001IH22Z-T provides active-low reset assertion at VDD ≥ 1V and holds reset for 190ms until VDD stabilizes above 2.19V. Use Value: Prevents MCU clock instability and register corruption during marginal power conditions, ensuring deterministic boot every cycle. |
Use Scenario: An environmental sensor node sleeps for 60s between readings, waking only when triggered by ISL88001IH22Z-T reset release. IC Role / Device Role / Timing Role: ISL88001IH22Z-T monitors the 2.2V LDO output and asserts reset if battery voltage sags below 2.19V during wake-up. Use Value: Cuts average system current to <1µA by enabling sleep-mode-only operation-no polling or ADC monitoring required. |
| Industrial Controller Brownout Protection | Portable Medical Device Supervision |
|
Use Scenario: A PLC I/O module experiences transient dips on its 2.2V logic rail due to relay switching noise. IC Role / Device Role / Timing Role: ISL88001IH22Z-T detects sub-threshold excursions and asserts reset within 15µs (tRPD), holding until rail recovers with hysteresis. Use Value: Eliminates spurious firmware crashes and communication lockups caused by supply transients-no software watchdog needed. |
Use Scenario: A handheld glucose meter uses a single AAA alkaline cell whose voltage drops from 1.58V to 1.2V over service life. IC Role / Device Role / Timing Role: ISL88001IH22Z-T supervises the 2.2V regulated rail derived from the battery, asserting reset before critical analog front-end errors occur. Use Value: Ensures measurement validity by disabling operation when supply margin falls below safe operating range-meets IEC 62304 safety requirements. |
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 | 2.19V threshold (±1.5%), 1.2µA supply current, SOT-23-3, open-drain RST output | Requires external pull-up resistor; higher IDD increases battery load; same pinout but different drive architecture | Select when legacy MAX809 compatibility is required and board already includes pull-up; avoid for ultra-low-power designs. |
| TPS3801K22DBVR | 2.2V threshold (±0.5%), 1.8µA supply current, SOT-23-3, push-pull active-low RST | Higher accuracy and faster tPOR (200ms min), but 11× higher supply current limits battery life in long-duration applications | Prefer for high-precision systems where threshold tolerance is critical and power budget allows >1µA standby current. |
Compared with MAX809SEUR+T and TPS3801K22DBVR, the ISL88001IH22Z-T delivers the lowest quiescent current (160nA) while retaining push-pull drive and industrial temperature range-making it optimal for energy-harvesting and multi-year battery applications where reset timing and threshold stability must coexist with nanoamp operation.
Availability
ISL88001IH22Z-T is available at Aetrix Electronics and suitable for microcontroller power-up sequencing, battery-powered sensor nodes, industrial controller brownout protection, and portable medical device supervision requiring stable component supply across extended production lifecycles.
Supply support for ISL88001IH22Z-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 high-performance, low-power microcontrollers, analog, and power management solutions for industrial, automotive, and IoT markets.
The ISL88001 family was designed specifically for ultra-low-power voltage supervision in space-constrained portable and battery-operated equipment, emphasizing nanoscale current consumption and factory-trimmed threshold accuracy without external components.
FAQ
What is the exact reset threshold voltage of the ISL88001IH22Z-T and how tightly is it specified?
The ISL88001IH22Z-T has a nominal reset threshold of 2.19V, with a guaranteed tolerance of ±1.2% over the full –40°C to +85°C operating range. At +25°C, the typical value is 2.190V, and the min/max limits are 2.164V and 2.216V respectively. This tight specification eliminates need for external trimming or calibration in precision 2.2V rail monitoring.
Does the ISL88001IH22Z-T require any external components to function?
No, the ISL88001IH22Z-T requires no external components to operate. Its 3-pin SOT-23 interface-GND, RST, and VDD-forms a complete solution. A local 0.1µF ceramic capacitor on VDD is recommended for noise suppression but not mandatory for basic functionality. No pull-up resistors, dividers, or timing capacitors are needed.
How does the ISL88001IH22Z-T behave during power-up and brownout conditions?
The ISL88001IH22Z-T asserts active-low reset when VDD rises to 1V (POR activation), holds RST low for 190ms, then releases reset only after VDD exceeds 2.19V. During brownout, it reasserts reset within 15µs if VDD falls below 2.19V and maintains reset until VDD recovers above the threshold plus hysteresis-ensuring clean, chatter-free operation under noisy supply conditions.
What is the maximum supply voltage the ISL88001IH22Z-T can tolerate on its VDD pin?
The ISL88001IH22Z-T has an absolute maximum VDD rating of +6.5V, but its recommended operating range depends on threshold version: for the 2.19V variant (ISL88001IH22Z-T), the max operating VDD is 2.75V. Exceeding this may cause inaccurate threshold comparison or accelerated aging-always limit VDD to ≤2.75V for reliable long-term performance.
Is the ISL88001IH22Z-T pin-compatible with other members of the ISL8800x family?
Yes, the ISL88001IH22Z-T shares identical 3-lead SOT-23 pinout (GND-RST-VDD) and footprint with all ISL88001, ISL88002, and ISL88003 variants in SOT-23 packaging-including ISL88001IH46Z-T, ISL88002IH22Z-T, and ISL88003IH22Z-T. Only the reset logic (push-pull vs. open-drain) and threshold voltage differ; no PCB redesign is needed when swapping within the same package type.
ISL88001IH22Z-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.19V
- 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
ISL88001IH22Z-T FAQ
1.How can I place an order for ISL88001IH22Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH22Z-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 ISL88001IH22Z-T reliable?
The price and inventory of ISL88001IH22Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH22Z-T is usually 5 days.
3.What payment methods are accepted for ISL88001IH22Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH22Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH22Z-T?
ISL88001IH22Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH22Z-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 ISL88001IH22Z-T?
For technical support, including ISL88001IH22Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH22Z-T requirements.
6.How does Aetrix verify that ISL88001IH22Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88001IH22Z-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 ISL88001IH22Z-T meets industry standards.
7.What is the process for return or replacement of ISL88001IH22Z-T?
All ISL88001IH22Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH22Z-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 ISL88001IH22Z-T part is unused and in its original packaging.
Return procedure for ISL88001IH22Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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