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Renesas ISL88003IE23Z-T7A
- Part No.:
- ISL88003IE23Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88003IE23Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,481
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Product details
Overview
ISL88003IE23Z-T7A from Renesas Electronics is an ultra-low-power 3-lead voltage supervisor IC with push-pull active-high reset output, 2.32V 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 supply stability below 1V must trigger reliable reset assertion.
For engineers reviewing the ISL88003IE23Z-T7A datasheet, ISL88003IE23Z-T7A pinout, ISL88003IE23Z-T7A application, or ISL88003IE23Z-T7A equivalent, this device delivers precise brownout detection for low-voltage embedded control, supports SC-70 package integration on space-constrained PCBs, and enables robust POR sequencing without external components.
Technical Context
The ISL88003IE23Z-T7A implements a factory-programmed bandgap reference comparator with hysteresis to detect falling VDD below 2.32V and assert RST high within 15µs. Its internal POR circuit activates at VDD = 1V, holding RST asserted until VDD exceeds 2.32V for ≥190ms.
Designed exclusively for single-supply monitoring, it uses no external resistors or capacitors, draws only 160nA at 1.8V, and maintains reset validity down to VDD = 1V - enabling operation in deep-brownout conditions typical of coin-cell or energy-harvesting systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V ±1.2% - ensures accurate detection of 2.3V rail collapse with minimal false triggering. |
| Supply Current | 160nA at 1.8V - extends battery life in always-on portable devices by minimizing quiescent drain. |
| POR Timeout | 190ms - guarantees microcontroller initialization completes only after stable VDD > 2.32V. |
| Reset Output Type | Push-pull active-high - drives RST directly to VDD without pull-up resistor, reducing BOM count. |
| Operating Voltage Range | 1.8V to 2.75V - matches common low-voltage logic rails while supporting valid reset down to 1V. |
| Temperature Range | -40°C to +85°C - qualified for industrial ambient environments without derating. |
| Hysteresis | 1% - prevents oscillation during slow-rising/falling VDD transitions near threshold. |
Pinout & Package
ISL88003IE23Z-T7A is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, pkg drawing P3.049), measuring 2.20mm × 1.35mm × 0.95mm, suitable for high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | IC ground reference; must be connected to system ground plane for accurate threshold sensing. |
| 2 | RST | Push-pull active-high reset output; drives HIGH when VDD ≥ 2.32V + hysteresis, LOW otherwise. |
| 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 2.32V threshold | Eliminates external resistor divider, reducing component count and layout area in compact designs. |
| 160nA supply current | Enables multi-year operation from CR2032 batteries in maintenance-free IoT sensors. |
| 190ms POR timeout | Guarantees sufficient time for flash memory initialization and clock stabilization before MCU release. |
| Reset valid down to VDD = 1V | Ensures deterministic behavior during deep brownout, preventing undefined MCU states. |
| SC-70 package | Reduces footprint by 40% vs SOT-23, critical for wearables and medical patches. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by single coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 2.3V regulated rail; asserts active-high RST to hold MCU in reset until power stabilizes post-wake. Use Value: 160nA quiescent current extends battery life beyond 2 years; 1V reset validity prevents spurious wakeups during voltage sag. |
Use Scenario: Remote digital input module operating in harsh factory environments with fluctuating 24V-derived 2.3V logic supply. IC Role / Device Role / Timing Role: Supervises local 2.3V rail feeding FPGA configuration logic and isolation drivers. Use Value: ±1.2% threshold accuracy ensures consistent trip point across -40°C to +85°C; hysteresis rejects EMI-induced transients. |
| Smart Meter Battery Backup | Wearable Fitness Tracker |
Use Scenario: Electricity meter retaining real-time clock and tamper logs during AC mains failure using supercapacitor-backed 2.3V rail. IC Role / Device Role / Timing Role: Detects collapse of backup rail and triggers controlled shutdown sequence via active-high RST signal. Use Value: 190ms POR timeout aligns with RTC register save timing; push-pull output eliminates need for external pull-up on isolated reset line. |
Use Scenario: Optical heart-rate sensor with ultra-low-power MCU cycling between sleep and measurement bursts. IC Role / Device Role / Timing Role: Ensures MCU remains held in reset until 2.3V LDO output fully settles after cold start. Use Value: SC-70 footprint fits within 3mm × 3mm board area; 2.32V threshold precisely matches LDO dropout margin. |
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 | 2.32V threshold, open-drain active-low RST, 1.2µA supply current, SOT-23 package | Requires external pull-up; higher current draw reduces battery life in always-on use | Select when legacy open-drain interface or SOT-23 footprint compatibility is required |
| TPS3801K23DBVR | 2.32V threshold, push-pull active-high RST, 450nA supply current, SOT-23 package | Higher quiescent current; same functional behavior but less optimal for sub-µA systems | Select when TI supply chain preference or existing SOT-23 layout reuse is prioritized |
Compared with MAX809SEUR+T and TPS3801K23DBVR, the ISL88003IE23Z-T7A provides the lowest quiescent current (160nA) in a smaller SC-70 package while delivering identical 2.32V threshold accuracy and push-pull active-high reset - making it optimal for space- and power-constrained designs where every nanoamp matters.
Availability
ISL88003IE23Z-T7A is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart meter battery backup systems requiring stable component supply with guaranteed long-term availability.
Supply support for ISL88003IE23Z-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 specializing in microcontrollers, analog, and power management solutions for industrial, automotive, and IoT markets.
The ISL88003IE23Z-T7A belongs to Renesas' ultra-low-power voltage supervisor family, designed specifically for battery-operated and energy-constrained embedded systems requiring precise, low-current supply monitoring.
FAQ
What is the exact reset threshold voltage of the ISL88003IE23Z-T7A and how accurate is it?
The ISL88003IE23Z-T7A has a nominal reset threshold of 2.32V with ±1.2% accuracy over -40°C to +85°C. This means the actual trip point falls between 2.257V and 2.383V at room temperature, and remains tightly bounded across its full operating range - critical for reliable brownout detection in low-voltage systems.
Does the ISL88003IE23Z-T7A require any external components to operate?
No, the ISL88003IE23Z-T7A requires no external components. Its factory-programmed 2.32V threshold, internal POR circuit, and push-pull RST output eliminate the need for external resistors, capacitors, or pull-ups - simplifying design and reducing bill-of-materials cost.
What is the minimum supply voltage at which the ISL88003IE23Z-T7A can assert a valid reset signal?
The ISL88003IE23Z-T7A guarantees valid reset assertion down to VDD = 1V. Below this level, the internal circuitry may not function reliably; above 1V, the device monitors VDD and asserts RST high when VDD exceeds 2.32V + hysteresis, ensuring deterministic behavior during brownout recovery.
How does the ISL88003IE23Z-T7A differ from the ISL88001 and ISL88002 variants?
The ISL88003IE23Z-T7A features a push-pull active-high RST output, whereas ISL88001IE23Z-T7A also uses push-pull but active-low, and ISL88002IE23Z-T7A uses open-drain active-low. All three share identical 2.32V threshold, 160nA current, and SC-70 packaging - the RST polarity and drive type are the sole functional distinctions.
What package type and dimensions does the ISL88003IE23Z-T7A use?
The ISL88003IE23Z-T7A uses a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, pkg drawing P3.049) with dimensions 2.20mm × 1.35mm × 0.95mm. Its compact size provides 40% smaller footprint than equivalent SOT-23 devices, enabling high-density routing in wearable and portable electronics.
ISL88003IE23Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ISL88003IE23Z-T7A FAQ
1.How can I place an order for ISL88003IE23Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88003IE23Z-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 ISL88003IE23Z-T7A reliable?
The price and inventory of ISL88003IE23Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88003IE23Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88003IE23Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88003IE23Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88003IE23Z-T7A?
ISL88003IE23Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88003IE23Z-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 ISL88003IE23Z-T7A?
For technical support, including ISL88003IE23Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88003IE23Z-T7A requirements.
6.How does Aetrix verify that ISL88003IE23Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88003IE23Z-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 ISL88003IE23Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88003IE23Z-T7A?
All ISL88003IE23Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88003IE23Z-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 ISL88003IE23Z-T7A part is unused and in its original packaging.
Return procedure for ISL88003IE23Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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