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Renesas ISL88012IH531Z-T7A
- Part No.:
- ISL88012IH531Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH531Z-T7A.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,360
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Product details
Overview
ISL88012IH531Z-T7A from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 3.09V VDD monitoring and user-adjustable VMON down to 0.6V, ±1.5% threshold accuracy, 200ms power-on reset timeout, complementary RST/RST outputs, and manual reset input - used for reliable µP power sequencing in embedded control systems.
For engineers reviewing the ISL88012IH531Z-T7A datasheet, ISL88012IH531Z-T7A pinout, ISL88012IH531Z-T7A application, or ISL88012IH531Z-T7A equivalent, key selection criteria include dual-supply monitoring capability, adjustable VMON trip point, ultra-low 5.5µA supply current, reset validity down to VDD = 1V, and immunity to power-supply transients.
Technical Context
The ISL88012IH531Z-T7A integrates two independent voltage monitoring paths: one compares VDD against a factory-trimmed 3.09V threshold (±1.5% over temperature), while the second compares VMON against an internal 600mV reference, configurable via external resistor divider. It asserts complementary active-high (RST) and active-low (RST/MR) reset signals upon undervoltage detection or manual reset assertion.
Reset remains asserted for 200ms after VDD and VMON exceed their respective thresholds. The device operates from 2.0V to 5.5V, draws only 5.5µA typical supply current at 3.3V, and maintains valid reset output down to VDD = 1V - enabling robust brownout protection in low-power industrial and portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 3.09V ±1.5% - factory-trimmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal, adjustable ≥0.6V via external resistor divider - enables custom monitoring of any rail ≥0.6V |
| POR Timeout | 200ms typ - ensures stable power-up before releasing reset to microprocessor |
| Supply Current | 5.5µA typ at 3.3V - minimizes quiescent load on battery or low-power supplies |
| Reset Validity | Down to VDD = 1V - guarantees functional reset assertion during deep brownout |
| Output Types | Complementary RST (push-pull high) and RST/MR (open-drain low) - supports direct interface to diverse logic families |
| Hysteresis | 31mV at 3.09V - prevents chatter near trip point under noisy supply conditions |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/MR | Combined active-low reset output & manual reset input | Open-drain output pulled low during reset; debounced active-low input accepts push-button or controller signal |
| GND | Ground reference | Common return path for all internal circuits and external biasing networks |
| RST | Active-high reset output | Push-pull output driven high during reset; compatible with TTL/CMOS inputs without pull-up |
| VDD | Supply voltage and monitored input | Power source (2.0–5.5V) and primary voltage sense node with 3.09V trip point |
| VMON | Adjustable voltage monitor input | Secondary sense input compared to 600mV reference; sets custom trip point using external resistors |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneously supervises main VDD (3.09V fixed) and secondary rail (0.6V–5.5V adjustable) - eliminates need for two discrete supervisors |
| Complementary reset outputs | RST (push-pull high) and RST/MR (open-drain low) enable direct connection to µP reset pins requiring either polarity |
| Manual reset support | Debounced MR input accepts <100mV pulse ≥1µs - simplifies integration of hardware reset buttons without external RC filtering |
| Ultra-low quiescent current | 5.5µA typical at 3.3V - extends battery life in portable equipment and reduces thermal load in dense PCB layouts |
| High-accuracy threshold | ±1.5% over -40°C to +85°C - ensures consistent reset behavior across industrial temperature range without calibration |
Applications
| Process Control Systems | Embedded Control Systems |
|---|---|
Use Scenario: Monitoring 3.3V I/O supply and 12V actuator rail in PLC modules where undervoltage must halt motion control before fault propagation. IC Role / Device Role / Timing Role: Dual supervisor asserting synchronized reset to ARM Cortex-M7 MCU and FPGA configuration logic upon either rail dropout. Use Value: Prevents partial initialization and metastability by holding both processor and programmable logic in reset until both supplies stabilize above 3.09V and 11.4V (via VMON resistor divider). | Use Scenario: Power sequencing in smart sensor nodes with 2.5V analog front-end and 3.09V digital core supply. IC Role / Device Role / Timing Role: Primary supervisor ensuring µC does not execute code until both rails exceed thresholds, with manual reset for field firmware recovery. Use Value: Guarantees clean startup of mixed-signal SoC by enforcing 200ms delay post-stabilization, eliminating race conditions between ADC reference settling and CPU boot. |
| Portable/Battery-Powered Equipment | Critical µP and µC Power Monitoring |
Use Scenario: Supervising Li-ion battery-backed 3.0V system rail and 1.8V memory supply in handheld medical devices. IC Role / Device Role / Timing Role: Low-current supervisor detecting brownout on main rail and asserting reset before SRAM data corruption occurs. Use Value: 5.5µA supply current extends battery runtime; reset validity down to VDD = 1V ensures fail-safe shutdown even during deep discharge. | Use Scenario: Ensuring reliable boot of automotive body-control MCU powered by switched 5V rail subject to load-dump transients. IC Role / Device Role / Timing Role: Immune-to-transient supervisor rejecting false resets during ISO 7637-2 pulse 5a, while accurately triggering on sustained undervoltage. Use Value: ±1.5% threshold accuracy and built-in hysteresis prevent chattering during noisy supply events, improving system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88014IH5Z-T7A | No fixed VDD threshold; VMON adjustable from 0.6V; no CPOR pin; same 5-lead SOT-23 package | Lacks dedicated 3.09V VDD monitoring - requires external resistor divider on VDD to emulate fixed trip point | Select when only adjustable monitoring is needed and board space allows added resistors for VDD scaling |
| MAX6326UT31D3+T | Single 3.08V fixed threshold; no VMON input; 3-pin SOT-23; 2.5µA supply current; 200ms POR | Monitors only one rail; no dual-supply capability or manual reset input | Select for cost-sensitive single-rail applications where secondary monitoring is handled separately |
Compared with ISL88012IH531Z-T7A, ISL88014IH5Z-T7A offers identical adjustability but requires external components to replicate fixed VDD supervision, while MAX6326UT31D3+T provides lower current and smaller footprint at the expense of losing dual-monitoring and manual reset functionality.
Availability
ISL88012IH531Z-T7A is available at Aetrix Electronics and suitable for process control systems, embedded control systems, and portable/battery-powered equipment requiring stable component supply despite its end-of-life status.
Supply support for ISL88012IH531Z-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
Intersil Corporation is a provider of precision analog and power management ICs, acquired by Renesas Electronics in 2017; products emphasize high accuracy, low power, and industrial reliability.
The ISL8801x family was designed specifically for compact, low-power voltage supervision in space-constrained embedded systems - integrating dual monitoring, manual reset, and complementary outputs into a 5-lead SOT-23 package.
FAQ
What is the exact VDD voltage threshold for ISL88012IH531Z-T7A?
The ISL88012IH531Z-T7A has a factory-programmed VDD threshold of 3.09V, specified with ±1.5% accuracy over the full -40°C to +85°C operating temperature range. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00, where VTHVDD = 3.04V (min), 3.09V (typ), 3.14V (max) for the IH531 variant. The ISL88012IH531Z-T7A uses this exact trim.
Does ISL88012IH531Z-T7A support manual reset functionality?
Yes, ISL88012IH531Z-T7A includes a debounced manual reset input on the RST/MR pin. Pulling this pin below 100mV for at least 1µs asserts both RST and RST outputs for the full 200ms POR timeout period. This feature is documented in the Pin Descriptions (page 5), Principles of Operation (page 10), and Functional Block Diagram (page 4) of the FN8093 datasheet.
Can ISL88012IH531Z-T7A monitor a 5V supply using the VMON pin?
Yes, ISL88012IH531Z-T7A can monitor a 5V supply via the VMON pin by configuring an external resistor divider to scale the input down to ≤0.6V. Equation 1 on page 9 of FN8093 defines VINTRIP = 0.6 × (1 + R1/R2); selecting R1 = 730kΩ and R2 = 100kΩ yields a 5V trip point. This adjustable monitoring capability is explicitly stated for ISL88012 on pages 1 and 5 of the datasheet.
What is the supply current consumption of ISL88012IH531Z-T7A at 3.3V?
The ISL88012IH531Z-T7A consumes 7µA (min), 10µA (typ), and 13µA (max) supply current at VDD = 3.3V, per the Electrical Specifications table on page 6 of FN8093 Rev 5.00. The typical value of 10µA aligns with the "ultra low 5.5µA" claim referenced in the datasheet summary - that figure applies to ISL88014/ISL88015 at 3.3V; ISL88012's typical is 10µA.
Is ISL88012IH531Z-T7A still in production or supported?
No, ISL88012IH531Z-T7A is marked "No longer available or supported" in the Ordering Information table on page 3 of FN8093 Rev 5.00. While Aetrix Electronics provides legacy supply support including traceable sourcing and lifecycle coordination, design-in of ISL88012IH531Z-T7A is not recommended for new projects due to discontinued status.
ISL88012IH531Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3.09V, Adj
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-SOT
ISL88012IH531Z-T7A FAQ
1.How can I place an order for ISL88012IH531Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH531Z-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 ISL88012IH531Z-T7A reliable?
The price and inventory of ISL88012IH531Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH531Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88012IH531Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH531Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH531Z-T7A?
ISL88012IH531Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH531Z-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 ISL88012IH531Z-T7A?
For technical support, including ISL88012IH531Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH531Z-T7A requirements.
6.How does Aetrix verify that ISL88012IH531Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88012IH531Z-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 ISL88012IH531Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88012IH531Z-T7A?
All ISL88012IH531Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH531Z-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 ISL88012IH531Z-T7A part is unused and in its original packaging.
Return procedure for ISL88012IH531Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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