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Renesas ISL88012IH522Z-T7A
- Part No.:
- ISL88012IH522Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH522Z-T7A.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,701
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Product details
Overview
ISL88012IH522Z-T7A from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 2.19V VDD monitoring and user-adjustable VMON monitoring down to 0.6V, with complementary active-low (RST) and active-high (RST) reset outputs, ±1.5% threshold accuracy, and 5.5µA supply current. It serves in power-up sequencing and brownout protection for microprocessor-based embedded systems.
For engineers reviewing the ISL88012IH522Z-T7A datasheet, ISL88012IH522Z-T7A pinout, ISL88012IH522Z-T7A application, or ISL88012IH522Z-T7A equivalent, key selection considerations include its dual-threshold supervision capability, 200ms nominal POR timeout, manual reset input (MR), immunity to supply transients, and operation down to VDD = 1V - all critical for reliable µP/µC power monitoring in industrial and portable equipment.
Technical Context
The ISL88012IH522Z-T7A integrates two independent voltage monitoring paths: one compares VDD against a factory-trimmed 2.19V threshold (±1.5% over –40°C to +85°C), while the other compares VMON against an internal 600mV reference, enabling custom monitoring of any supply ≥0.6V via external resistor divider. Both paths feed into a shared reset logic block that asserts complementary RST/RST outputs.
Reset assertion occurs on power-up (POR), VDD or VMON undervoltage, manual MR pull-down, or watchdog timeout (though ISL88012 lacks WDI functionality). The device features hysteresis (22mV at 2.19V trip point), operates from 2.0V to 5.5V, and maintains valid reset signaling down to VDD = 1V - ensuring robust behavior during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.19V ±1.5% - factory-trimmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V (default) - internal reference enabling adjustable monitoring down to 0.6V via external resistors |
| POR Timeout | 200ms typical - ensures stable power before releasing reset to µP/µC |
| Supply Current | 5.5µA (typ) at 2.5V - ultra-low quiescent current for battery-powered applications |
| Reset Outputs | Complementary RST (push-pull high) and RST (open-drain low) - supports mixed-logic interface requirements |
| Operating Temp | –40°C to +85°C - industrial-grade temperature range for embedded control systems |
| VDD Range | 2.0V to 5.5V - compatible with 2.5V, 3.3V, and 5V system rails |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined reset output & manual reset input | Open-drain active-low reset output; debounced active-low manual reset trigger (≤100mV, ≥1µs) |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external bias networks |
| 3 - RST | Active-high push-pull reset output | Drives high (VDD) when not asserting reset; complements RST/MR for logic-level flexibility |
| 4 - VDD | Supply input & monitored rail | Power source (2.0–5.5V) and primary voltage sense node with 2.19V trip point |
| 5 - VMON | Adjustable voltage monitor input | Accepts externally divided voltage; compared to 0.6V internal reference for secondary supply supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneously monitors VDD (2.19V fixed) and VMON (0.6V adjustable), enabling 2-rail PGOOD generation without external comparators |
| Complementary reset outputs | RST (push-pull high) and RST/MR (open-drain low) eliminate need for external level-shifting or pull-up resistors in mixed-logic systems |
| Manual reset with debounce | MR pin accepts direct push-button connection (GND) and rejects noise spikes <1µs, simplifying field-service reset design |
| Ultra-low supply current | 5.5µA typical at 2.5V enables >10-year battery life in always-on supervisory functions for portable instrumentation |
| Valid reset below 1V VDD | Asserts reset even as VDD collapses to 1V, preventing erratic µP operation during deep brownout recovery |
Applications
| Industrial Process Controller | Portable Medical Monitor |
|---|---|
|
Use Scenario: PLC I/O module powered by 3.3V main rail and 2.19V auxiliary sensor bias rail. IC Role / Device Role / Timing Role: Monitors both rails simultaneously; asserts reset if either falls below threshold, halting firmware execution until stable. Use Value: Prevents corrupted analog-to-digital conversion or false fault reporting caused by partial rail collapse during ESD events. |
Use Scenario: Battery-powered handheld ECG device with 3.3V MCU rail and 2.19V op-amp signal chain rail. IC Role / Device Role / Timing Role: Provides synchronized POR and brownout detection across both critical rails using single IC. Use Value: Eliminates need for two discrete supervisors, reducing BOM count and PCB area while guaranteeing correlated reset timing. |
| Embedded Network Gateway | Smart Energy Meter |
|
Use Scenario: Dual-rail SoC platform (5V PHY, 3.3V core) requiring coordinated power-up sequencing and runtime supervision. IC Role / Device Role / Timing Role: Uses VMON to monitor 3.3V core via resistor divider; VDD monitors 5V PHY directly. Use Value: Enables single-chip solution for multi-rail validation, avoiding timing skew between independent supervisors. |
Use Scenario: Revenue-grade meter with isolated 3.3V microcontroller and 2.19V metrology ADC reference. IC Role / Device Role / Timing Role: Supervises both rails with ±1.5% threshold accuracy over temperature to ensure measurement integrity. Use Value: Meets IEC 62053-21 accuracy requirements for power supply monitoring in Class 0.2 meters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88013IH522Z-T7A | Includes watchdog timer (1.6s normal / 51s startup timeout); lacks VMON input - only fixed VDD supervision at 2.19V | Required where system-level software hang detection is needed; unsuitable for dual-rail monitoring | Select when watchdog functionality outweighs need for adjustable VMON; requires PCB redesign due to different pinout (WDI replaces VMON) |
| MAX6326XR23D3+T | Single 2.32V supervisor with manual reset; no VMON, no complementary outputs, higher 12µA supply current | Only monitors one rail; lacks flexibility for secondary supply tracking or logic-level versatility | Use only for cost-sensitive single-rail applications where complementary outputs and ultra-low current are non-critical |
Compared with ISL88012IH522Z-T7A, ISL88013IH522Z-T7A adds watchdog capability but sacrifices dual-supply monitoring, while MAX6326XR23D3+T reduces feature set and increases current draw - making ISL88012IH522Z-T7A optimal for compact, low-power dual-rail supervision where precise threshold matching and reset flexibility are essential.
Availability
ISL88012IH522Z-T7A is available at Aetrix Electronics and suitable for industrial process controllers, portable medical monitors, and smart energy meters requiring stable component supply and long-term design continuity.
Supply support for ISL88012IH522Z-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 (now part of Renesas Electronics) designs precision analog and power management ICs for industrial, infrastructure, and high-reliability embedded systems.
The ISL88012IH522Z-T7A belongs to the ISL8801x family of voltage supervisors engineered specifically for low-power, high-accuracy dual-rail monitoring in space-constrained embedded applications.
FAQ
What is the exact voltage threshold for VDD monitoring on the ISL88012IH522Z-T7A?
The ISL88012IH522Z-T7A has a factory-programmed VDD threshold of 2.19V, 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, and applies exclusively to the ISL88012IH522Z-T7A variant marked "AHL".
Does the ISL88012IH522Z-T7A support watchdog timer functionality?
No, the ISL88012IH522Z-T7A does not include watchdog timer functionality. Watchdog capability is exclusive to the ISL88013 and ISL88015 variants per the Product Features Table (page 5) and Functional Block Diagrams (page 4). The ISL88012IH522Z-T7A pinout substitutes VMON for WDI, confirming absence of watchdog circuitry.
Can the ISL88012IH522Z-T7A monitor a 12V supply?
Yes, the ISL88012IH522Z-T7A can monitor a 12V supply using the VMON input with an external resistor divider. As stated in the Pin Descriptions (page 5) and Figure 2 (page 9), VMON compares against a 0.6V internal reference; a 19:1 resistor ratio (e.g., 180kΩ/10kΩ) scales 12V to 0.6V at VMON, enabling accurate 12V supervision with ±1.5% effective threshold tolerance.
What is the purpose of the RST/MR pin on the ISL88012IH522Z-T7A?
The RST/MR pin on the ISL88012IH522Z-T7A serves a dual function: it acts as an open-drain active-low reset output (RST) and as a debounced active-low manual reset input (MR). Per the Pin Descriptions (page 5), pulling this pin below 100mV for ≥1µs triggers a system reset, and it remains asserted for the full 200ms POR timeout - enabling direct push-button integration without external components.
Is the ISL88012IH522Z-T7A still in active production?
No, the ISL88012IH522Z-T7A is marked "No longer available or supported" in the official Ordering Information table (page 3 of FN8093 Rev 5.00). While Aetrix Electronics provides legacy supply support, design-in of new products should consider alternatives such as ISL88013IH522Z-T7A (with watchdog) or newer Renesas supervisor families with extended lifecycle assurance.
ISL88012IH522Z-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:
- 2.19V, 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
ISL88012IH522Z-T7A FAQ
1.How can I place an order for ISL88012IH522Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH522Z-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 ISL88012IH522Z-T7A reliable?
The price and inventory of ISL88012IH522Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH522Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88012IH522Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH522Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH522Z-T7A?
ISL88012IH522Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH522Z-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 ISL88012IH522Z-T7A?
For technical support, including ISL88012IH522Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH522Z-T7A requirements.
6.How does Aetrix verify that ISL88012IH522Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88012IH522Z-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 ISL88012IH522Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88012IH522Z-T7A?
All ISL88012IH522Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH522Z-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 ISL88012IH522Z-T7A part is unused and in its original packaging.
Return procedure for ISL88012IH522Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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