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Renesas ISL88012IH546Z-T7A
- Part No.:
- ISL88012IH546Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH546Z-T7A.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,370
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Product details
Overview
ISL88012IH546Z-T7A from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 package, providing fixed 4.64V VDD monitoring and user-adjustable VMON input down to 0.6V, ±1.5% threshold accuracy, 200ms power-on reset timeout, complementary active-low (RST) and active-high (RST) outputs, and manual reset capability. It safeguards microprocessor power sequencing in embedded control and portable systems.
For engineers reviewing the ISL88012IH546Z-T7A datasheet, ISL88012IH546Z-T7A pinout, ISL88012IH546Z-T7A application, or ISL88012IH546Z-T7A equivalent, key selection criteria include dual-threshold supervision with factory-trimmed VDD trip point, ultra-low 5.5µA supply current, reset validity down to VDD = 1V, immunity to supply transients, and RoHS-compliant Pb-free SOT-23 packaging.
Technical Context
The ISL88012IH546Z-T7A integrates two independent voltage monitoring channels: one compares VDD against a factory-programmed 4.64V threshold (±1.5% over temperature), while the second monitors VMON against an internal 600mV reference, adjustable upward via external resistor divider. Both channels drive complementary push-pull (RST) and open-drain (RST/MR) reset outputs.
Reset assertion occurs when either monitored voltage falls below its trip point, during power-up (with 200ms POR delay), or upon manual reset pulse (≥1µs low on RST/MR). The device operates from 2.0V to 5.5V supply and maintains valid reset signaling down to VDD = 1V, ensuring robust brownout detection across industrial temperature range (–40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 4.64V ±1.5% - factory-trimmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal, adjustable >0.6V - enables custom monitoring of secondary supplies down to sub-1V rails |
| POR Timeout | 200ms typical - ensures stable power before releasing reset to µP/µC |
| Supply Current | 5.5µA typical at VDD = 5V - minimizes quiescent load in battery-powered equipment |
| Reset Validity | Down to VDD = 1V - guarantees reliable reset assertion during deep brownout conditions |
| Output Types | Complementary RST (push-pull high) and RST/MR (open-drain low) - supports direct interface to both active-high and active-low reset inputs |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded and portable applications |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74 compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined active-low reset output & manual reset input | Open-drain output asserted LOW during reset; debounced active-low input accepts ≥1µs pulse to trigger system reset |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external bias networks |
| 3 - RST | Active-high reset output | Push-pull output driven HIGH during reset; compatible with µP/µC active-high reset pins without pull-up |
| 4 - VDD | Supply voltage and primary monitored input | Power source (2.0–5.5V) and input for fixed 4.64V threshold comparison |
| 5 - VMON | User-adjustable voltage monitor input | Input compared against 600mV reference; external resistor divider sets custom trip point ≥0.6V |
Key Features
| Feature | Design Value |
|---|---|
| Dual voltage supervision | Simultaneous monitoring of main supply (VDD @ 4.64V) and auxiliary rail (VMON @ 0.6V+), enabling PGOOD generation for multi-rail systems |
| 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 designs |
| Ultra-low quiescent current | 5.5µA typical supply draw extends battery life in portable instrumentation and handheld devices |
| Reset validity at 1V VDD | Guarantees fail-safe reset assertion even during severe brownout, preventing undefined µP behavior |
| ±1.5% threshold accuracy | Factory-trimmed VDD trip point ensures precise power-fail detection without calibration overhead |
Applications
| Microprocessor Power Sequencing | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Ensuring safe startup and shutdown of ARM Cortex-M or PIC microcontrollers in industrial controllers. IC Role / Device Role / Timing Role: Dual-supervisor asserts complementary reset until both 3.3V core and 1.8V I/O rails stabilize above thresholds. Use Value: Prevents execution of corrupted code during power ramp by enforcing 200ms minimum hold time after VDD and VMON exceed trip points. | Use Scenario: Monitoring Li-ion battery voltage and regulated 3.3V system rail in handheld test meters. IC Role / Device Role / Timing Role: VMON monitors battery voltage (via resistor divider) while VDD tracks regulated output; reset asserts if either drops below threshold. Use Value: Enables graceful low-battery shutdown before brownout-induced data loss, leveraging 1V reset validity and 5.5µA quiescent current. |
| Embedded Control Systems | Portable Computing Peripherals |
Use Scenario: Supervising FPGA configuration power and auxiliary 2.5V logic supply in programmable logic modules. IC Role / Device Role / Timing Role: VDD monitors 2.5V rail; VMON monitors 1.2V FPGA core supply; complementary outputs interface directly to FPGA reset pins. Use Value: Guarantees FPGA remains held in reset until both supplies are stable, avoiding partial configuration failure. | Use Scenario: Providing PGOOD indication and reset control for USB-C PD adapters and docking stations. IC Role / Device Role / Timing Role: Dual-threshold supervision validates both 5V bus and 3.3V controller supply; RST output signals host controller readiness. Use Value: Enables fast, deterministic power-good handshaking with host systems using factory-calibrated thresholds and no external components. |
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 | Suitable for designs requiring only adjustable monitoring and single reset polarity | Select when dual-threshold is needed but fixed VDD trip is unnecessary and board space favors single-output solution |
| MAX6326UR46-T | Single 4.63V fixed threshold; no VMON; no RST output; 1.5µA supply current; SOT-23-5 | Limited to single-rail monitoring; lacks manual reset and adjustable channel | Choose for cost-sensitive, single-supply applications where ultra-low current outweighs dual-monitoring capability |
Compared with ISL88012IH546Z-T7A, ISL88014IH5Z-T7A removes fixed VDD supervision but retains adjustable VMON and lower current, while MAX6326UR46-T offers minimal current draw at the expense of dual monitoring and complementary outputs-making ISL88012IH546Z-T7A optimal for multi-rail integrity assurance.
Availability
ISL88012IH546Z-T7A is available at Aetrix Electronics and suitable for embedded control systems, portable instrumentation, and industrial power monitoring requiring stable component supply despite end-of-life status.
Supply support for ISL88012IH546Z-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, now part of Renesas Electronics, with expertise in supervisory, timing, and interface solutions for industrial and embedded markets.
The ISL8801x family was designed specifically for low-power, high-accuracy voltage supervision in space-constrained systems, integrating dual monitoring, manual reset, and complementary outputs into a 5-lead SOT-23 footprint.
FAQ
What is the exact VDD voltage threshold for ISL88012IH546Z-T7A?
The ISL88012IH546Z-T7A has a factory-programmed VDD threshold of 4.64V, with ±1.5% accuracy over the –40°C to +85°C temperature range. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00. The device uses internal hysteresis (46mV typical) to prevent chatter near the trip point. ISL88012IH546Z-T7A does not support adjustment of this fixed threshold.
Can ISL88012IH546Z-T7A monitor a 1.2V supply?
Yes, ISL88012IH546Z-T7A can monitor a 1.2V supply using the VMON pin. The internal reference is 600mV, so a resistor divider (e.g., R1 = 100kΩ, R2 = 100kΩ) scales 1.2V down to 600mV at VMON. Equation 1 on page 9 of FN8093 confirms this scaling method. ISL88012IH546Z-T7A supports any VMON input ≥0.6V, making it suitable for sub-3.3V rails including 1.2V, 1.8V, and 2.5V.
Does ISL88012IH546Z-T7A support watchdog timer functionality?
No, ISL88012IH546Z-T7A does not include a watchdog timer. Watchdog capability is exclusive to ISL88013 and ISL88015 in the family (per Pin Descriptions, page 5, and Features list, page 1). ISL88012IH546Z-T7A provides dual voltage supervision, manual reset, and complementary reset outputs-but no WDI pin or watchdog timeout circuitry. Its pinout (VDD, VMON, RST, GND, RST/MR) confirms absence of WDI.
What is the function of the CPOR pin on ISL88012IH546Z-T7A?
The ISL88012IH546Z-T7A does not have a CPOR pin. CPOR is present only on ISL88011 and ISL88014 (per Pin Descriptions, page 5, and Functional Block Diagrams, page 4). ISL88012IH546Z-T7A uses a fixed 200ms POR timeout and lacks capacitor-based delay adjustment. Its pin 5 is VMON-not CPOR-enabling adjustable secondary voltage monitoring instead of timeout extension.
Is ISL88012IH546Z-T7A still in production or supported?
No, ISL88012IH546Z-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-including traceable sourcing and lifecycle coordination-the device is obsolete per Intersil/Renesas documentation. Designers should consider migration paths such as ISL88014IH5Z-T7A or newer alternatives for new designs.
ISL88012IH546Z-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:
- 4.64V, 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
ISL88012IH546Z-T7A FAQ
1.How can I place an order for ISL88012IH546Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH546Z-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 ISL88012IH546Z-T7A reliable?
The price and inventory of ISL88012IH546Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH546Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88012IH546Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH546Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH546Z-T7A?
ISL88012IH546Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH546Z-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 ISL88012IH546Z-T7A?
For technical support, including ISL88012IH546Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH546Z-T7A requirements.
6.How does Aetrix verify that ISL88012IH546Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88012IH546Z-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 ISL88012IH546Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88012IH546Z-T7A?
All ISL88012IH546Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH546Z-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 ISL88012IH546Z-T7A part is unused and in its original packaging.
Return procedure for ISL88012IH546Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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