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Renesas ISL6506CBZ-T
- Part No.:
- ISL6506CBZ-T
- Manufacturer:
- Renesas
- Category:
- Power Supply Controllers, Monitors
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
ISL6506CBZ-T.pdf
- Description:
- IC PWR SUPPLY CTRLR/MONITR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,013
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Product details
Overview
ISL6506CBZ-T from Renesas Electronics is a dual-rail ACPI-compliant linear power controller for motherboard 5VDUAL and 3.3VDUAL voltage regulation. It integrates an internal 3.3V LDO (2A current limit), 5VDUAL switch control, S3/S5 digital state interface, and thermal shutdown in an 8-lead EPSOIC package. Used in ATX-based microprocessor systems to manage USB/keyboard (5VDUAL) and PCI/LAN auxiliary (3.3VDUAL) rails during S0–S5 sleep states.
For engineers reviewing the ISL6506CBZ-T datasheet, ISL6506CBZ-T pinout, ISL6506CBZ-T application, or ISL6506CBZ-T equivalent, this page delivers verified functional identity, exact sleep-state behavior (5VDUAL active in S4/S5), confirmed 2A 3.3V LDO capability, thermal shutdown threshold (140°C), and validated alternative part selection for ACPI power sequencing designs.
Technical Context
The ISL6506CBZ-T implements dual-output ACPI state control via dedicated S3 and S5 digital inputs with internal 10µA pull-downs. Its architecture separates sleep-mode operation-using an integrated 3.3V LDO powered from 5VSB-and active-mode operation-routing ATX 3.3V/5V through external NMOS/PMOS switches under DLA and 5VDLSB gate drive control.
It features a 6.55–9.85ms soft-start interval, 58µs S0→S3 transition delay, and monitors both 5VSB (POR at 4.5V rising / 3.6–3.95V falling) and 12VATX (POR at 8.9–10.8V) to enforce safe power-up sequencing before entering S0. Undervoltage protection on 3.3VAUX triggers at 2.475V during sleep states only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| 3.3VDUAL LDO Current Limit | 2A - supports high-current auxiliary loads like LAN PHY or PCIe slots in S3/S4/S5 sleep states |
| 5VDUAL State in S4/S5 | Active - maintains 5V supply to USB peripherals and keyboard/mouse even in deep sleep (S4/S5) |
| Thermal Shutdown Threshold | 140°C - protects against sustained overtemperature during high-load or poor heatsinking conditions |
| Soft-Start Interval | 6.55–9.85ms - controls inrush current during 3.3VDUAL and 5VDUAL rail ramp-up to prevent system reset |
| Supply Current (S0 State) | 3.60mA - ultra-low bias consumption enables efficient always-on auxiliary power management |
| 5VSB POR Threshold | 4.5V (rising), 3.6–3.95V (falling) - ensures reliable power-on reset and graceful shutdown under brownout |
| Package Type | 8-lead EPSOIC (M8.15C) - exposed pad enhances thermal dissipation for linear regulator operation |
Pinout & Package
8-lead Exposed Pad Small Outline Integrated Circuit (EPSOIC) package per drawing M8.15C; 1.422–1.700mm body height, 4.80–4.98mm width (D), 3.81–3.99mm length (E), EPAD thermally connected to GND via ≥3 vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Bias supply input | Connects to ATX 5VSB; powers internal circuitry and serves as input to 3.3V LDO; monitored for POR |
| 3V3AUX (Pin 2) | 3.3VDUAL output node | Delivers regulated 3.3V in sleep states (via internal LDO); connects to ATX 3.3V in active states (via external NMOS) |
| S3 (Pin 3) | Digital sleep-state input | High = S0/S1/S2; Low = S3; internal 10µA pull-down ensures defined state when unasserted |
| S5 (Pin 4) | Digital sleep-state input | High = S0/S1/S2/S3; Low = S4/S5; blocks illegal S4/S5→S3 transitions |
| GND (Pins 5 & EPAD) | Signal and thermal ground | Reference for all voltages; EPAD must be soldered to PCB ground plane for thermal performance |
| DLA (Pin 6) | Open-drain 12V gate driver | Pulls gates of external N-MOSFETs (Q1/Q3) to 12VATX in active state; used for 12V POR monitoring |
| 5VDLSB (Pin 7) | P-MOSFET gate driver | Drives gate of external P-MOSFET (Q2) to connect 5VSB to 5VDUAL in S3/S4/S5 sleep states |
| N/C (Pin 8) | No-connect | Not internally bonded; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| ACPI S0–S5 Dual-Rail Control | Hardware-enforced state machine with S3/S5 inputs eliminates software dependency for compliant sleep/wake sequencing |
| Integrated 3.3V LDO (2A) | Eliminates need for external low-dropout regulator in S3/S4/S5, reducing BOM count and board area |
| 5VDUAL Active in S4/S5 | Enables wake-on-LAN, USB resume, and keyboard wake functionality without requiring full system power restoration |
| Thermal Shutdown + UVLO | 140°C junction shutdown and 2.475V 3.3VAUX undervoltage lockout prevent damage and ensure stable auxiliary rail operation |
| Programmable Soft-Start | Adjustable 5VDUAL ramp via external capacitor on Q2 gate-drain; prevents output overshoot and MOSFET stress |
Applications
| Desktop Motherboard Power Sequencing | Embedded ATX-Compatible Systems |
|---|---|
Use Scenario: Managing 5VDUAL and 3.3VDUAL rails on x86-based desktop motherboards compliant with ACPI 2.0+ specifications. IC Role / Device Role / Timing Role: Dual-rail power controller coordinating ATX 5V/3.3V/5VSB/12V inputs to generate S0–S5 state-aware outputs with hardware-enforced timing. Use Value: Enables zero-software wake-from-S5 via USB or LAN while maintaining strict ±2% 3.3VDUAL regulation across temperature. |
Use Scenario: Power management in industrial PC-104 or COM Express modules requiring legacy ATX compatibility and deep-sleep retention. IC Role / Device Role / Timing Role: Standby power supervisor delivering always-on 5VDUAL and regulated 3.3VDUAL during S4/S5 for remote management controllers (IPMI/BMC). Use Value: 2A 3.3V LDO sustains Ethernet PHY and flash memory I/O during extended S5, eliminating need for secondary regulators. |
| USB Peripheral Hub Power Control | Legacy BIOS-Compatible Wake Logic |
Use Scenario: Providing isolated, sequenced 5VDUAL to USB 2.0 hub ICs on add-in cards or daughterboards. IC Role / Device Role / Timing Role: Dedicated 5V rail controller ensuring clean power delivery during hot-plug events and S3→S0 transitions. Use Value: 58µs S0→S3 delay and soft-start prevent bus reset glitches; 5VDUAL remains live in S4/S5 for device enumeration on resume. |
Use Scenario: Enabling legacy BIOS wake sources (PS/2 keyboard, parallel port) in modern UEFI firmware environments. IC Role / Device Role / Timing Role: Hardware-level S3/S5 state translator converting SLP_S3/SLP_S5 signals into precise 3.3V/5V enable timing per ACPI spec. Use Value: Eliminates firmware patching for wake-source compatibility; guarantees 5VDUAL availability for PS/2 controller power during S5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail ACPI power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6506ACBZ-T | Same package and pinout; 1A 3.3V LDO instead of 2A; 5VDUAL remains active in S4/S5 | Lower 3.3VDUAL current capacity limits use in high-power auxiliary circuits (e.g., multi-port LAN) | Select ISL6506ACBZ-T only if total 3.3VDUAL load ≤1A and S4/S5 5VDUAL retention is required |
| ISL6506BCBZ-T | Same package and pinout; 2A 3.3V LDO; 5VDUAL shuts down in S4/S5 (vs. active in ISL6506CBZ-T) | Cannot support wake-on-LAN or USB resume from S4/S5 due to 5VDUAL removal | Choose ISL6506BCBZ-T only for cost-sensitive designs where S4/S5 wake capability is unnecessary |
Compared with ISL6506CBZ-T, ISL6506ACBZ-T trades 1A LDO current for identical S4/S5 5VDUAL retention, while ISL6506BCBZ-T offers same 2A LDO but removes 5VDUAL in deep sleep-making ISL6506CBZ-T the sole option balancing high-current auxiliary support with full ACPI wake functionality.
Availability
ISL6506CBZ-T is available at Aetrix Electronics and suitable for desktop motherboard design, embedded ATX-compatible systems, and USB peripheral power management requiring stable component supply across long-lifecycle production runs.
Supply support for ISL6506CBZ-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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power management, and timing solutions for industrial, automotive, and computing markets.
The ISL6506 series belongs to Renesas' ACPI-compliant power controller product line, designed specifically to simplify motherboard-level power sequencing and reduce external component count in x86-compatible systems.
FAQ
What is the key functional difference between ISL6506CBZ-T and ISL6506BCBZ-T?
The ISL6506CBZ-T maintains 5VDUAL output during S4/S5 sleep states, enabling wake-on-LAN and USB resume, whereas ISL6506BCBZ-T shuts down 5VDUAL in S4/S5. Both share identical 2A 3.3VDUAL LDO capability and 8-lead EPSOIC packaging. The ISL6506CBZ-T is functionally equivalent to ISL6506ACBZ-T in S4/S5 behavior but provides higher 3.3V current capacity.
Does ISL6506CBZ-T require external MOSFETs, and if so, what types?
Yes, ISL6506CBZ-T requires three external MOSFETs: two N-channel devices (Q1, Q3) to connect ATX 3.3V and 5V to 3.3VDUAL and 5VDUAL in active states, and one P-channel device (Q2) to connect 5VSB to 5VDUAL in S3/S4/S5 sleep states. Q2 must be a logic-level P-MOSFET rated for ≤4.5V VGS turn-on.
What is the purpose of the DLA pin on ISL6506CBZ-T, and how is it used?
The DLA pin on ISL6506CBZ-T is an open-drain output that drives the gates of external N-MOSFETs (Q1 and Q3) using the ATX 12V rail. A mandatory 1kΩ pull-up resistor connects DLA to 12VATX. This configuration enables fast, low-loss switching of ATX 3.3V/5V into the auxiliary rails during S0 entry and also serves as the 12V power-on reset (POR) monitor input.
How does ISL6506CBZ-T handle undervoltage on the 3.3VDUAL rail?
The ISL6506CBZ-T monitors 3.3VDUAL (at the 3V3AUX pin) for undervoltage only during sleep states and after initial soft-start. If voltage drops below 2.475V (25% below nominal), the internal LDO disables, retries once after a soft-start interval, and permanently latches off after three failed retries-requiring a full 5VSB power cycle (POR) to reset.
Is ISL6506CBZ-T RoHS compliant and lead-free?
Yes, ISL6506CBZ-T is RoHS compliant and Pb-free, featuring 100% matte tin (e3) termination finish compatible with both SnPb and Pb-free soldering processes. It meets IPC/JEDEC J-STD-020 reflow profiles and is classified per Moisture Sensitivity Level (MSL) requirements specified in Renesas TB363.
ISL6506CBZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- 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:
- 3.6 mA
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
ISL6506CBZ-T FAQ
1.How can I place an order for ISL6506CBZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6506CBZ-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 ISL6506CBZ-T reliable?
The price and inventory of ISL6506CBZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6506CBZ-T is usually 5 days.
3.What payment methods are accepted for ISL6506CBZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6506CBZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6506CBZ-T?
ISL6506CBZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6506CBZ-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 ISL6506CBZ-T?
For technical support, including ISL6506CBZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6506CBZ-T requirements.
6.How does Aetrix verify that ISL6506CBZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6506CBZ-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 ISL6506CBZ-T meets industry standards.
7.What is the process for return or replacement of ISL6506CBZ-T?
All ISL6506CBZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6506CBZ-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 ISL6506CBZ-T part is unused and in its original packaging.
Return procedure for ISL6506CBZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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