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Renesas ISL88012IH529Z-T7A
- Part No.:
- ISL88012IH529Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH529Z-T7A.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
ISL88012IH529Z-T7A from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 2.92V VDD monitoring and user-adjustable VMON monitoring down to 0.6V. It delivers complementary active-low (RST) and active-high (RST) reset outputs, 200ms power-on reset timeout, manual reset input, and ultra-low 5.5µA supply current. It is used in embedded control systems for reliable µP power sequencing and brownout protection.
For engineers reviewing the ISL88012IH529Z-T7A datasheet, ISL88012IH529Z-T7A pinout, ISL88012IH529Z-T7A application, or ISL88012IH529Z-T7A equivalent, key selection criteria include its dual-threshold supervision capability, ±1.5% voltage threshold accuracy over temperature, reset validity down to VDD = 1V, immunity to supply transients, and compatibility with low-power portable and industrial systems requiring stable reset assertion.
Technical Context
The ISL88012IH529Z-T7A integrates two independent voltage monitoring channels: one factory-trimmed at 2.92V (±1.5%) for VDD supervision, and a second adjustable channel referenced to an internal 600mV comparator on the VMON pin. Its dual reset outputs (RST and RST) support push-pull and open-drain interface requirements simultaneously.
It features a manual reset input (MR) with 1µs minimum pulse width and debounced logic, and supports system-level reliability via reset assertion during power-up, brownout, or manual trigger events. Reset remains asserted for 200ms after monitored voltages exceed thresholds, ensuring stable initialization of microcontrollers and FPGAs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.92V ±1.5% - factory-programmed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal (adjustable >0.6V via external resistor divider) - enables custom monitoring of auxiliary rails |
| POR Timeout | 200ms typical - ensures µP/FPGA initialization completes before release of reset |
| Supply Current | 5.5µA at VDD = 3.3V - enables use in battery-powered and always-on systems |
| Reset Validity | Down to VDD = 1V - guarantees functional reset assertion even during deep brownout |
| Hysteresis | 29mV at VDD = 2.92V - prevents chatter near threshold due to noise or ripple |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
ISL88012IH529Z-T7A is housed in a Pb-free 5-lead SOT-23 package (JEDEC MO-178AA, Intersil pkg drawing P5.064), measuring 2.80 × 1.60 × 1.10 mm with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined open-drain reset output & manual reset input | Asserts active-low reset when triggered; accepts debounced <100mV MR pulse ≥1µs |
| 2 - GND | Ground reference | Common return path for all internal comparators, oscillator, and output drivers |
| 3 - RST | Active-high push-pull reset output | Drives HIGH (VDD – 0.4V min) when not asserted; LOW (≤0.4V) during reset |
| 4 - VDD | Supply input & primary monitored rail | Provides bias and is compared against 2.92V threshold; valid operation from 2.0V to 5.5V |
| 5 - VMON | Adjustable secondary voltage monitor input | Compares external voltage against internal 600mV reference; supports resistor-divider scaling |
Key Features
| Feature | Design Value |
|---|---|
| Dual voltage supervision | Simultaneous monitoring of main supply (2.92V fixed) and auxiliary rail (0.6V adjustable) prevents single-point failure in multi-rail systems |
| Complementary reset outputs | RST (push-pull) and RST/MR (open-drain) enable direct interfacing with diverse µP reset inputs without external pull-ups or level shifters |
| Manual reset with debounce | Integrated MR input eliminates need for external RC filter or Schmitt trigger, reducing BOM count and layout area |
| Ultra-low quiescent current | 5.5µA max at 3.3V allows integration into energy-sensitive applications like portable instrumentation and remote sensors |
| High threshold accuracy | ±1.5% over –40°C to +85°C ensures consistent reset behavior across environmental stress without calibration |
| Brownout immunity | Reset remains valid down to VDD = 1V and includes 29mV hysteresis, rejecting transient dips that could cause spurious resets |
Applications
| Industrial Embedded Control | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Monitoring 3.3V logic supply and 1.8V sensor bias rail in a handheld blood glucose meter with FPGA-based signal processing. IC Role / Device Role / Timing Role: Dual-supervisor asserts synchronized reset if either rail drops below threshold during battery discharge or ESD event. Use Value: Prevents corrupted ADC sampling or firmware lockup by holding µC in reset until both supplies stabilize post-brownout. |
Use Scenario: Ensuring safe startup and fault response in a battery-powered ultrasound probe with analog front-end and ARM Cortex-M4 host. IC Role / Device Role / Timing Role: Provides POR reset at power-on and monitors backup coin-cell voltage (via VMON divider) to initiate graceful shutdown before data loss. Use Value: Enables deterministic low-power state transitions and preserves calibration data integrity during intermittent battery replacement. |
| Programmable Logic Power Sequencing | Smart Sensor Node Supervision |
|
Use Scenario: Coordinating power-up sequence between 12V analog supply, 3.3V digital core, and 1.2V FPGA I/O banks in an industrial PLC module. IC Role / Device Role / Timing Role: Uses VMON to monitor 3.3V rail and VDD to monitor 12V rail; asserts reset until both exceed thresholds for 200ms. Use Value: Eliminates need for discrete RC timers or sequencer ICs, reducing component count while guaranteeing correct voltage ramp order. |
Use Scenario: Supervising Li-ion battery voltage (via VMON divider) and regulated 3.0V system rail in a wireless environmental sensor node. IC Role / Device Role / Timing Role: Triggers reset on undervoltage (battery <3.2V) and asserts POR on cold start; operates continuously at 5.5µA. Use Value: Extends usable battery life by >18 months in sleep mode while maintaining guaranteed reset functionality across full discharge cycle. |
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 only; no RST output (RST/MR only); 4.5µA supply current | Lacks primary supply monitoring - requires external resistor divider for all rails; suited for single-rail + auxiliary monitoring | Select when only one monitored voltage needs flexibility and lowest possible current is critical |
| MAX6326XR29D3+T | Single 2.93V fixed threshold; no VMON; no RST output; 1.6µA supply current; 200ms POR | Monitors only one rail; lacks dual supervision and adjustable input - suitable for cost-optimized single-rail designs | Select when system uses only one critical supply and ultra-low current outweighs supervision flexibility |
Compared with ISL88012IH529Z-T7A, ISL88014IH5Z-T7A removes fixed VDD monitoring but reduces current by 1µA, while MAX6326XR29D3+T sacrifices adjustability and dual outputs for minimal footprint and current - making ISL88012IH529Z-T7A optimal where dual-rail reliability and design flexibility are required.
Availability
ISL88012IH529Z-T7A is available at Aetrix Electronics and suitable for industrial embedded control, portable medical instrumentation, programmable logic power sequencing, and smart sensor node supervision requiring stable component supply and long-term design continuity.
Supply support for ISL88012IH529Z-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) is a provider of precision analog and power management ICs, emphasizing high accuracy, low power, and industrial reliability.
The ISL8801x family was designed specifically for robust voltage supervision in space-constrained embedded systems, integrating POR, manual reset, and dual monitoring into a single 5-pin SOT-23 device.
FAQ
What is the exact voltage threshold for the VDD input on ISL88012IH529Z-T7A?
The ISL88012IH529Z-T7A has a factory-programmed VDD threshold of 2.92V, 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 ISL88012IH529Z-T7A variant.
Does ISL88012IH529Z-T7A support adjustable power-on reset timeout?
No, ISL88012IH529Z-T7A does not support adjustable POR timeout. Unlike ISL88011 and ISL88014, it lacks a CPOR pin and provides a fixed 200ms POR delay. The datasheet explicitly assigns CPOR functionality only to ISL88011 and ISL88014 (page 5, Product Features Table), and the ISL88012 pinout shows VMON at pin 3-not CPOR-confirming this limitation for ISL88012IH529Z-T7A.
Can ISL88012IH529Z-T7A monitor a 1.2V supply using the VMON pin?
Yes, ISL88012IH529Z-T7A can monitor a 1.2V supply via the VMON pin using an external resistor divider. With its internal 600mV reference, a 2:1 divider (e.g., 100kΩ top, 100kΩ bottom) scales 1.2V to 600mV at VMON. The datasheet confirms VMON supports "custom monitoring of any voltage down to 0.6V" (page 1), and Equation 1 on page 9 validates this scaling method for ISL88012.
What are the absolute maximum ratings for ISL88012IH529Z-T7A?
The absolute maximum ratings for ISL88012IH529Z-T7A are: voltage on any pin relative to GND = –1.0V to +7V; supply voltage range = 2.0V to 5.5V; DC output current = 5mA; operating temperature under bias = –40°C to +125°C; storage temperature = –65°C to +150°C. These values are specified in the Absolute Maximum Ratings table on page 6 of FN8093 Rev 5.00 and apply to ISL88012IH529Z-T7A.
Is ISL88012IH529Z-T7A still in active production?
No, ISL88012IH529Z-T7A is marked "No longer available or supported" in the official Ordering Information table (page 3 of FN8093 Rev 5.00). While Aetrix Electronics maintains legacy supply channels for this part, design-in for new projects is discouraged. The datasheet does not list a recommended replacement for ISL88012 variants, unlike ISL88011/ISL88013 entries which specify ISL88013 as a replacement.
ISL88012IH529Z-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:
- 2.92V, 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
ISL88012IH529Z-T7A FAQ
1.How can I place an order for ISL88012IH529Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH529Z-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 ISL88012IH529Z-T7A reliable?
The price and inventory of ISL88012IH529Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH529Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88012IH529Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH529Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH529Z-T7A?
ISL88012IH529Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH529Z-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 ISL88012IH529Z-T7A?
For technical support, including ISL88012IH529Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH529Z-T7A requirements.
6.How does Aetrix verify that ISL88012IH529Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88012IH529Z-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 ISL88012IH529Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88012IH529Z-T7A?
All ISL88012IH529Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH529Z-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 ISL88012IH529Z-T7A part is unused and in its original packaging.
Return procedure for ISL88012IH529Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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