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Renesas ISL6504ACBN-T
- Part No.:
- ISL6504ACBN-T
- Manufacturer:
- Renesas
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL6504ACBN-T.pdf
- Description:
- IC MULTIPLE POWER CTRLR 16-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,773
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Product details
Overview
ISL6504ACBN-T from Intersil is a multiple linear power controller with ACPI control interface, integrating three linear regulators and dual switching controllers for 5VDUAL, 3.3VDUAL/3.3VSB, 1.2VVID, and 1.5VSB outputs. It operates in S0–S5 ACPI states using S3/S5 digital inputs, supports external NPN/N-MOS/PMOS pass devices, and delivers ±2.0% output regulation over temperature in 16-pin SOIC wide-body package.
For engineers reviewing the ISL6504ACBN-T datasheet, ISL6504ACBN-T pinout, ISL6504ACBN-T application, or ISL6504ACBN-T equivalent, key selection criteria include S4/S5 5VDUAL retention behavior, 3.3VDUAL sleep-state NPN drive capability, VID_PG timing control via VID_CT capacitor, and fault reporting via open-drain FAULT pin tied to 5VSB.
Technical Context
The ISL6504ACBN-T implements ACPI-compliant state management through dedicated S3 and S5 digital inputs with internal 50kΩ pull-ups to 5VSB and 2μs deglitching. Its architecture separates active-state (S0/S1/S2) and sleep-state (S3/S4/S5) regulation paths: 3.3VDUAL uses an external N-channel MOSFET in active mode and NPN transistor in sleep mode, while 5VDUAL employs NMOS in active and PMOS/PNP in S3 - with ISL6504A retaining 5VDUAL in S4/S5.
It integrates four regulated outputs: 1.5VSB (always on when 5VSB present), 1.2VVID (active only in S0/S1/S2, sourced from 3.3V), 3.3VDUAL/3.3VSB (dual-path linear regulator), and 5VDUAL (switch controller). Undervoltage monitoring covers all outputs and ATX inputs (3.3V, 5VSB), with centralized FAULT reporting and thermal shutdown at 155°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 1.5VSB (always-on), 1.2VVID (S0/S1/S2 only), 3.3VDUAL/3.3VSB (dual-path), 5VDUAL (S0–S3 for ISL6504; S0–S5 for ISL6504A) |
| Regulation Accuracy | ±2.0% over temperature for all outputs - ensures stable voltage identification and chipset standby supply integrity |
| 5VSB Supply Current | 17mA nominal, 4mA shutdown - defines bias consumption during system sleep |
| S3/S5 Input Thresholds | High ≥2.2V, low ≤0.8V - compatible with standard ATX SLP_S3/SLP_S5 logic levels |
| Soft-Start Current | 10μA typical - sets ramp rate of output voltages via external CSS capacitor (e.g., 0.1μF yields ~30ms soft-start) |
| Thermal Shutdown | Unconditional shutdown at 155°C junction - protects against sustained overtemperature in high-power motherboard layouts |
| FAULT Output | Open-drain, pulled to 5VSB on fault - signals undervoltage, overtemperature, or illegal state transitions to system controller |
Pinout & Package
ISL6504ACBN-T is packaged in a 16-pin wide-body SOIC (M16.15 footprint), with GND (Pin 8) as signal reference and bottom pad electrically isolated (not connected to substrate).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1V5SB) | 1.5V standby regulator output | Supplies ICH4 resume well; draws current from 3V3DL; monitored for UV (1.25V threshold) |
| 2 (3V3DLSB) | NPN base drive for 3.3VDUAL in sleep | Drives external NPN transistor to regulate 3.3VDUAL/3.3VSB during S3/S4/S5 states |
| 3 (3V3DL) | 3.3VDUAL/3.3VSB output node | Delivers regulated 3.3V to south bridge/PCI slots; monitored for UV (2.75V rising threshold) |
| 4 (1V2VID) | 1.2V VID circuitry supply | Active only in S0/S1/S2; sourced from 3V3 pin; shut down in sleep states |
| 5 (3V3) | ATX 3.3V input source | Provides bias and current for 1V2VID regulator; monitored for power quality |
| 6 (S3) | ACPI S3 sleep state input | Digital control pin with 50kΩ pull-up to 5VSB; 200μs delay before S3 entry |
| 7 (S5) | ACPI S4/S5 sleep state input | Digital control pin with 50kΩ pull-up to 5VSB; blocks illegal S3↔S4/S5 transitions |
| 8 (GND) | Signal ground reference | All voltage measurements referenced here; must be low-impedance connection to PCB ground plane |
| 9 (FAULT) | Open-drain fault indicator | Pulled to 5VSB on any UV event, overtemperature (>140°C), or illegal state transition |
| 10 (DLA) | N-MOS gate drive for 3.3V/5V switching | Open-collector output; requires 1kΩ pull-up to 12V to drive external N-MOSFET gates |
| 11 (5VDLSB) | PMOS/PNP gate drive for 5VDUAL in sleep | Switches ATX 5VSB to 5VDUAL output in S3 (ISL6504) or S3+S4/S5 (ISL6504A) |
| 12 (5VDL) | 5VDUAL output node | Delivers USB/keyboard/mouse power; monitored for UV (4.10V rising threshold) |
| 13 (SS) | Soft-start and shutdown control | 10μA current source charges external capacitor; pulled low (<0.8V) forces full shutdown |
| 14 (VID_PG) | 1.2VVID power-good indicator | Open-collector output; requires 10kΩ pull-up to 1V2VID; delayed by VID_CT capacitor |
| 15 (VID_CT) | VID_PG timing capacitor node | Charged by 10μA current source; sets VID_PG assertion delay (e.g., 1nF ≈ 0.008ms) |
| 16 (5VSB) | Primary bias supply input | Connects to ATX 5VSB; powers entire IC; monitored for POR (4.5V rising threshold) |
Key Features
| Feature | Design Value |
|---|---|
| Four ACPI-controlled outputs | Enables single-chip compliance with Intel's ACPI specification for motherboard power sequencing across S0–S5 states |
| S4/S5 5VDUAL retention (ISL6504A) | Differentiates ISL6504A from ISL6504 by maintaining 5VDUAL during suspend-to-disk/soft-off - critical for wake-on-LAN or USB charging |
| Integrated undervoltage monitoring | Centralized FAULT reporting for all four outputs and ATX inputs eliminates need for discrete supervisors |
| Programmable VID_PG delay | VID_CT capacitor allows precise tuning of 1.2VVID power-good assertion timing relative to processor VID requirements |
| Thermal protection with hysteresis | Shuts down all outputs at 155°C; resumes only after 5VSB power cycle - prevents thermal runaway in compact layouts |
Applications
| Desktop Motherboard Power Management | ACPI-Compliant Notebook Docking Station |
|---|---|
Use Scenario: Regulating 3.3VSB, 5VDUAL, 1.5VSB, and 1.2VVID rails on ATX-based desktop motherboards supporting S3/S4/S5 sleep states. IC Role / Device Role / Timing Role: Central ACPI power controller managing state transitions, output enable/disable, and fault signaling via FAULT pin. Use Value: Eliminates discrete supervisor + linear regulator combinations; reduces BOM count and PCB area while ensuring ±2.0% regulation across thermal range. | Use Scenario: Providing auxiliary power sequencing for notebook docking stations requiring wake-on-LAN and USB device charging during S4/S5. IC Role / Device Role / Timing Role: Dual-mode 5VDUAL controller - maintains 5VDUAL in S4/S5 (ISL6504A variant) to power Ethernet PHY and USB hub logic. Use Value: Enables persistent 5V bus without main ATX 5V, reducing standby power draw and enabling fast resume from deep sleep. |
| Industrial Control Panel with Suspend Capability | Legacy PCI-Based Embedded System |
Use Scenario: Powering south bridge, PCI slots, and resume circuitry in fanless industrial panels with thermal constraints and extended temperature operation. IC Role / Device Role / Timing Role: Linear + switching hybrid controller delivering 3.3VDUAL/3.3VSB and 1.5VSB with thermal shutdown at 155°C. Use Value: Internal thermal protection and ±2.0% regulation ensure reliable operation in unventilated enclosures up to 70°C ambient. | Use Scenario: Replacing aging discrete power solutions in legacy PCI-based systems requiring backward-compatible ACPI S3 suspend/resume. IC Role / Device Role / Timing Role: Drop-in replacement for multi-regulator designs, using same SOIC footprint and external pass transistors. Use Value: Maintains compatibility with existing 3.3VDUAL NPN driver and 5VDUAL NMOS/PMOS topology while improving regulation accuracy and integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiple-output ACPI power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6504CBN-T | Same functionality and pinout, but ISL6504 (non-A) shuts down 5VDUAL in S4/S5 states | Not suitable where persistent 5VDUAL is required for wake-on-LAN or USB charging during S4/S5 | Select ISL6504ACBN-T when S4/S5 5VDUAL retention is mandatory; otherwise ISL6504CBN-T offers identical performance at lower cost |
| RT8205AZSP | Single-chip 5-phase VRM controller with integrated MOSFET drivers; no native S4/S5 5VDUAL retention or 1.5VSB regulator | Designed for CPU core voltage regulation, not auxiliary rail management; lacks ACPI sleep-state logic | Use only if redesigning for modern VRM architecture; not a functional replacement for ISL6504ACBN-T's auxiliary rail and ACPI state control |
Compared with ISL6504CBN-T, ISL6504ACBN-T adds S4/S5 5VDUAL persistence - essential for wake-on-LAN - while RT8205AZSP serves a different application domain (CPU VRM vs. auxiliary rail control), making it unsuitable as a direct alternative.
Availability
ISL6504ACBN-T is available at Aetrix Electronics and suitable for desktop motherboard design, industrial control panel development, and legacy PCI-based embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL6504ACBN-T 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 U.S.-based semiconductor company specializing in precision analog and power management ICs for computing and industrial applications.
The ISL6504A product line was designed specifically for ACPI-compliant motherboard power architectures, integrating linear regulation, switching control, and state-aware monitoring into a single package to replace discrete supervisor + regulator solutions.
FAQ
What is the key functional difference between ISL6504ACBN-T and ISL6504CBN-T?
The ISL6504ACBN-T retains 5VDUAL output during S4/S5 sleep states (suspend-to-disk/soft-off), whereas ISL6504CBN-T shuts down 5VDUAL in those states. This distinction enables wake-on-LAN and USB charging functionality in deep sleep modes. Both share identical pinout, package, and all other electrical characteristics - only the S4/S5 5VDUAL behavior differs per Table 1 in the FN9062 datasheet.
How does ISL6504ACBN-T manage 3.3VDUAL/3.3VSB regulation across ACPI states?
The ISL6504ACBN-T uses dual-path regulation for 3.3VDUAL/3.3VSB: in active states (S0/S1/S2), it connects ATX 3.3V directly via an external N-channel MOSFET driven by DLA; in sleep states (S3/S4/S5), it regulates from 5VSB using an external NPN transistor driven by 3V3DLSB. This architecture minimizes conduction loss in active mode and ensures stable standby voltage without requiring separate regulators.
What is the purpose of the VID_CT pin on ISL6504ACBN-T, and how is it configured?
The VID_CT pin on ISL6504ACBN-T sets the delay before VID_PG asserts valid 1.2VVID power-good status. An internal 10μA current source charges an external capacitor connected from VID_CT to GND. The delay follows C = tDELAY/125000 (with C in farads); for example, a 1nF capacitor yields ~8μs delay. This ensures VID_PG aligns precisely with processor VID timing requirements during power-up.
Can ISL6504ACBN-T be used in new designs despite its obsolete status?
Yes - ISL6504ACBN-T remains viable for legacy-support and long-lifecycle programs where functional equivalence and SOIC footprint compatibility are critical. While marked "OBSOLETE PRODUCT" with "NO RECOMMENDED REPLACEMENT" in the datasheet, Aetrix Electronics provides traceable, tested inventory and supply-chain continuity support to sustain production for existing platforms requiring this exact ACPI power controller behavior.
How does the FAULT pin on ISL6504ACBN-T respond to undervoltage conditions?
The FAULT pin on ISL6504ACBN-T is an open-drain output pulled to 5VSB during any undervoltage event on controlled outputs (1.5VSB, 1.2VVID, 3.3VDUAL/3.3VSB, 5VDUAL) or monitored ATX inputs (3.3V, 5VSB), as well as overtemperature (>140°C). It does not latch off the IC unless the fault occurs during soft-start; external latching requires pulling SS low. A 1kΩ pull-down resistor to GND is required for proper logic-level signaling.
ISL6504ACBN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- Power Supply Controller/Monitor
- Voltage - Input:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Supply:
- 17 mA
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISL6504ACBN-T FAQ
1.How can I place an order for ISL6504ACBN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6504ACBN-T 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 ISL6504ACBN-T reliable?
The price and inventory of ISL6504ACBN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6504ACBN-T is usually 5 days.
3.What payment methods are accepted for ISL6504ACBN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6504ACBN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6504ACBN-T?
ISL6504ACBN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6504ACBN-T 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 ISL6504ACBN-T?
For technical support, including ISL6504ACBN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6504ACBN-T requirements.
6.How does Aetrix verify that ISL6504ACBN-T is sourced from the original manufacturer or authorized distributors?
All ISL6504ACBN-T 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 ISL6504ACBN-T meets industry standards.
7.What is the process for return or replacement of ISL6504ACBN-T?
All ISL6504ACBN-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6504ACBN-T, 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 ISL6504ACBN-T part is unused and in its original packaging.
Return procedure for ISL6504ACBN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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