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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Renesas HIP6503CBZ

Name: HIP6503CBZ
Brand: Renesas
SKU: HIP6503CBZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HIP6503CBZ

Manufacturer:: Renesas

Category:: Power Management - Specialized

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: HIP6503CBZ.pdf

Description:: IC ACPI MULTI POWER CTRLR 20SOIC

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Product details

Overview

HIP6503CBZ from Intersil is a multiple linear power controller IC designed for ACPI-compliant motherboard power management. It delivers five regulated voltages - 1.8VSB, 2.5/3.3VMEM, 3.3VDUAL/3.3VSB, 2.5VCLK, and 5VDUAL - using internal regulators and external pass transistors. It operates across 0°C to 70°C, supports S0–S5 state transitions via S3/S5 control pins, and integrates undervoltage monitoring with centralized FAULT reporting for microprocessor systems.

For engineers reviewing the HIP6503CBZ datasheet, HIP6503CBZ pinout, HIP6503CBZ application, or HIP6503CBZ equivalent, this device serves as a dedicated ACPI voltage sequencer and linear controller for ATX-based PC motherboards requiring precise sleep-state power delivery, memory voltage selection (2.5V/3.3V), and fault-aware regulation of dual-mode 5VDUAL and clock-supply rails.

Technical Context

The HIP6503CBZ implements three independent linear regulator channels (1.8VSB, 2.5/3.3VMEM, 2.5VCLK) with internal pass elements, plus two switch-controlled outputs (3.3VDUAL/3.3VSB and 5VDUAL) managed by external MOSFETs/NPNs. Its control logic interprets S3/S5 digital inputs with 2μs deglitching and enforces legal state transitions only between active (S0/S1) and sleep (S3/S4/S5) modes.

It features integrated soft-start via an external capacitor on SS pin, POR-triggered initialization from 5VSB ≥4.5V, and hierarchical UV detection: all outputs monitored at ±2% regulation tolerance, with fault latching on 1.8VSB/3.3VDUAL during startup and automatic shutdown at 155°C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Temp Range	0°C to 70°C ambient - validated for commercial motherboard environments without derating.
Output Voltage Accuracy	±2.0% over temperature - ensures stable memory, clock, and resume-rail operation across thermal cycling.
1.8VSB Output Current	250–300 mA - sufficient to power ICH2 resume well and low-power auxiliary circuits from 5VSB input.
2.5/3.3VMEM Regulation	Selectable via RSEL resistor (1kΩ = 2.5V, 10kΩ = 3.3V) - enables single-IC support for RDRAM or SDRAM memory subsystems.
5VDUAL Control Logic	EN5VDL + S3/S5 truth table determines sleep-state enablement - allows system-level configuration of USB/keyboard/mouse power in S3/S4/S5.
Soft-Start Current	10 μA typical - sets controlled ramp rate for output voltages using external CSS capacitor, preventing 5VSB collapse during power-up.
Thermal Shutdown Threshold	155°C junction - triggers unconditional output disable to protect motherboard components during thermal overload.

Pinout & Package

Package: 20-lead SOIC (Pb-free), 0.300" wide, M20.3 footprint - compatible with standard ATX motherboard reflow profiles and RoHS-compliant assembly.

Pin/Terminal	Circuit Role	Design Meaning
1: 5VSB	Bias supply input	Primary power source for IC core; powers internal regulators and enables POR reset at ≥4.5V.
2: 1V8IN	1.8VSB regulator input	Connected to 3.3VDUAL rail; supplies pass element for 1.8VSB output with minimal dropout.
3: 1V8SB	1.8V resume well output	Always-on rail during S3/S4/S5; monitored for UV events and used for ICH2 wake signaling.
4: 3V3DLSB	Sleep-state 3.3V driver	Drives NPN base to regulate 3.3VDUAL in S3/S4/S5 using internal pass transistor.
5: 3V3DL	3.3VDUAL/3.3VSB output node	Delivers 3.3V to PCI/Aux/LAN during sleep; connected directly to ATX 3.3V in active states via DLA-driven MOSFET.
6: VCLK	2.5V clock supply output	Active only in S0/S1; powered from 3V3 pin; delivers up to 800 mA for processor termination and clock ICs.
7: 3V3	ATX 3.3V input	Source for VCLK and VMEM active-state regulation; monitored for undervoltage at 90% threshold.
8: EN5VDL	5VDUAL sleep-enable control	Digital input latched during startup; determines whether 5VDUAL remains active in S3/S4/S5 per Table 1.
9: S3	Suspend-to-RAM request	De-glitched digital input; initiates transition to S3 when low while S5 is high; includes 200μs delay.
10: S5	Suspend-to-disk/soft-off request	De-glitched digital input; combined with S3 defines sleep mode; blocks illegal S3↔S4/S5 transitions.
11: GND	Signal reference	Common return for all analog and digital circuitry; must be low-impedance connection to motherboard ground plane.
12: FAULT/MSEL	Multi-function pin	Configures VMEM voltage (2.5V/3.3V) via RSEL; reports all UV/fault/overtemp events by pulling to 5VSB.
13: DLA	Active-state MOSFET gate driver	Drives gates of external NMOS devices to connect ATX 3.3V/5V to VMEM, 3.3VDUAL, and 5VDUAL rails.
14: 5VDLSB	Sleep-state 5VDUAL gate driver	Drives PMOS/PNP base to connect ATX 5VSB to 5VDUAL output during S3/S4/S5.
15: 5VDL	5VDUAL output node	Delivers 5V to USB/keyboard/mouse in active states; sourced from ATX 5V; monitored for UV at 4.15V threshold.
16: SS	Soft-start and shutdown control	External capacitor sets ramp rate; pulled low (<0.8V) forces full output shutdown and FAULT reset.
17: 12V	ATX 12V input	Supplies gate bias for high-side pass transistors; monitored for UV at 10.8V rising threshold.
18: 5V	ATX 5V input	Source for 5VDUAL active-state regulation; monitored for UV at 90% of nominal (4.5V).
19: DRV2	VMEM active-state driver	Drives base of external NPN transistor to regulate 2.5/3.3VMEM from ATX 3.3V in S0/S1.
20: VSEN2	VMEM feedback and output	In sleep states, regulated internally to 2.5V/3.3V; in active states, driven by DRV2-connected NPN; monitored for UV.

Key Features

Feature	Design Value
ACPI-compliant 5-voltage generation	Integrates regulation for 1.8VSB, 2.5/3.3VMEM, 3.3VDUAL, 2.5VCLK, and 5VDUAL - eliminates need for discrete controllers in S0–S5 sequencing.
Memory voltage configurability	RSEL resistor on FAULT/MSEL pin selects 2.5V (R = 1kΩ) or 3.3V (R = 10kΩ) VMEM output - supports both RDRAM and SDRAM platforms with one BOM item.
Centralized fault reporting	Single FAULT/MSEL pin signals undervoltage on any output, ATX supply failure, or overtemperature - simplifies system-level fault handling and BIOS integration.
Controlled soft-start and shutdown	10μA SS current source + external capacitor enables programmable ramp rates; SS pin pull-down provides hardware-initiated shutdown with FAULT reset.
Thermal protection with hysteresis	Shuts down at 155°C; resumes operation at 140°C - prevents thermal runaway while allowing recovery after transient overload.

Applications

Desktop Motherboard Power Management	ACPI S3/S4/S5 Resume Architecture
Use Scenario: ATX motherboard implementing Intel-compatible ACPI specification with dual-memory support and USB peripheral wake capability. IC Role / Device Role / Timing Role: Primary linear power controller managing voltage sequencing, state transitions, and fault response across five regulated rails. Use Value: Reduces component count by integrating five regulators and monitors into one 20-pin SOIC, enabling compact layout and consistent timing across S0→S3→S0 transitions.	Use Scenario: System requiring reliable resume-from-sleep functionality with guaranteed 1.8VSB availability and controlled 5VDUAL enablement in S3. IC Role / Device Role / Timing Role: Sleep-state voltage supervisor and sequencer - maintains 1.8VSB and 3.3VDUAL during S3, activates 5VDUAL only if EN5VDL = 1. Use Value: Ensures ICH2 resume well remains powered while allowing firmware to selectively retain USB power in suspend, improving user experience and compliance.
RDRAM/SDRAM Memory Subsystem Support	Processor Clock and Termination Supply
Use Scenario: High-performance desktop platform supporting either RDRAM (2.5V) or SDRAM (3.3V) memory modules. IC Role / Device Role / Timing Role: Configurable VMEM regulator - sets output voltage based on RSEL resistor value, active in both S0 and S3 states. Use Value: Enables single motherboard design to support two memory technologies without changing power ICs or layout - reduces BOM variants and validation effort.	Use Scenario: CPU socket area requiring clean, low-noise 2.5V supply for clock distribution ICs and processor termination networks. IC Role / Device Role / Timing Role: Dedicated 2.5VCLK regulator - active only in S0/S1, powered from 3V3 pin, delivering up to 800 mA with ±2% accuracy. Use Value: Isolates clock rail from main 3.3V plane noise; eliminates need for external LDO, reducing EMI and improving signal integrity near CPU.

Desktop Motherboard Power Management

ACPI S3/S4/S5 Resume Architecture

Use Scenario: ATX motherboard implementing Intel-compatible ACPI specification with dual-memory support and USB peripheral wake capability.

IC Role / Device Role / Timing Role: Primary linear power controller managing voltage sequencing, state transitions, and fault response across five regulated rails.

Use Value: Reduces component count by integrating five regulators and monitors into one 20-pin SOIC, enabling compact layout and consistent timing across S0→S3→S0 transitions.

Use Scenario: System requiring reliable resume-from-sleep functionality with guaranteed 1.8VSB availability and controlled 5VDUAL enablement in S3.

IC Role / Device Role / Timing Role: Sleep-state voltage supervisor and sequencer - maintains 1.8VSB and 3.3VDUAL during S3, activates 5VDUAL only if EN5VDL = 1.

Use Value: Ensures ICH2 resume well remains powered while allowing firmware to selectively retain USB power in suspend, improving user experience and compliance.

RDRAM/SDRAM Memory Subsystem Support

Processor Clock and Termination Supply

Use Scenario: High-performance desktop platform supporting either RDRAM (2.5V) or SDRAM (3.3V) memory modules.

IC Role / Device Role / Timing Role: Configurable VMEM regulator - sets output voltage based on RSEL resistor value, active in both S0 and S3 states.

Use Value: Enables single motherboard design to support two memory technologies without changing power ICs or layout - reduces BOM variants and validation effort.

Use Scenario: CPU socket area requiring clean, low-noise 2.5V supply for clock distribution ICs and processor termination networks.

IC Role / Device Role / Timing Role: Dedicated 2.5VCLK regulator - active only in S0/S1, powered from 3V3 pin, delivering up to 800 mA with ±2% accuracy.

Use Value: Isolates clock rail from main 3.3V plane noise; eliminates need for external LDO, reducing EMI and improving signal integrity near CPU.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multiple linear power controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
HIP6502CBZ	Four-output variant (omits 2.5VCLK regulator); identical pinout and control logic for remaining rails.	Not suitable where dedicated low-noise 2.5V clock supply is required; lacks VCLK output and associated 3V3 input pin.	Select HIP6502CBZ only if clock rail is generated externally or not needed - reduces cost but removes integrated timing supply.
ISL6522CBZ	Successor device with enhanced thermal performance (θJA = 50°C/W), wider 5VSB operating range (4.0–5.5V), and improved UV hysteresis.	Supports newer ATX12V 2.x specifications and higher ambient temperatures; requires minor layout update due to different pin 12 function (no MSEL).	Choose ISL6522CBZ for new designs targeting extended life cycle, higher reliability, or compatibility with latest ATX revisions - not drop-in replaceable.

Compared with HIP6502CBZ, HIP6503CBZ adds a dedicated 2.5VCLK regulator for processor timing integrity; compared with ISL6522CBZ, it lacks updated thermal specs and requires external RSEL configuration instead of digital MSEL, making it suitable for legacy ATX motherboard refreshes rather than new platforms.

Availability

HIP6503CBZ is available at Aetrix Electronics and suitable for desktop motherboard manufacturing, ACPI-compliant power subsystem redesigns, and industrial embedded computing platforms requiring stable component supply with long-term lifecycle visibility.

Supply support for HIP6503CBZ 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, industrial, and communications markets.

The HIP6503 product line was developed specifically for ACPI-compliant PC motherboard power sequencing, delivering tightly coordinated multi-rail regulation with integrated fault monitoring and state-aware switching for S0–S5 transitions.

FAQ

What is the primary function of the HIP6503CBZ in a motherboard design?

The HIP6503CBZ serves as a multiple linear power controller that manages five regulated voltage rails - 1.8VSB, 2.5/3.3VMEM, 3.3VDUAL/3.3VSB, 2.5VCLK, and 5VDUAL - across ACPI S0–S5 states. It uses internal regulators and external pass transistors to deliver precise, sequenced power while monitoring for undervoltage and overtemperature faults. The HIP6503CBZ replaces discrete solutions with a single 20-pin SOIC, reducing board space and complexity in ATX-compliant systems.

How does the HIP6503CBZ select between 2.5V and 3.3V memory output voltage?

The HIP6503CBZ selects 2.5V or 3.3V for the VMEM output using an external resistor (RSEL) connected between the FAULT/MSEL pin and ground. An internal 40μA current source develops a voltage across RSEL; if that voltage is below 200mV (RSEL = 1kΩ), the IC configures VSEN2 for 2.5V; if above (RSEL = 10kΩ), it configures for 3.3V. This setting is latched after each 3.3VDUAL ramp-up or chip reset, and no capacitor may be placed on FAULT/MSEL to avoid false selection.

Can the HIP6503CBZ operate without external pass transistors?

No - the HIP6503CBZ requires external pass transistors for most outputs. While it integrates internal pass elements for 1.8VSB, 2.5VCLK, and sleep-state VMEM/3.3VDUAL regulation, active-state VMEM uses an external NPN driven by DRV2, 3.3VDUAL uses an external NMOS driven by DLA, and 5VDUAL requires separate NMOS (active) and PMOS/PNP (sleep) transistors. These external devices handle high current and thermal dissipation beyond the IC's internal capability.

What happens when the FAULT pin goes high on the HIP6503CBZ?

When the FAULT pin goes high on the HIP6503CBZ, it indicates an undervoltage condition on any regulated output, loss of an ATX supply (3.3V/5V/12V/5VSB), or junction temperature exceeding 140°C. If the fault occurs on an internally regulated output (e.g., 1.8VSB) during startup, the entire IC latches off until 5VSB is cycled. For faults on externally regulated outputs, only the FAULT flag asserts - full shutdown requires pulling the SS pin low. The HIP6503CBZ continues normal operation unless thermal shutdown at 155°C occurs.

Is the HIP6503CBZ still recommended for new designs?

No - the official datasheet states "NOT RECOMMENDED FOR NEW DESIGNS" and lists "NO RECOMMENDED REPLACEMENT." While fully functional and supported for legacy motherboard repairs and continuity builds, Intersil discontinued active development and recommends evaluating successors like the ISL6522CBZ for new projects. Aetrix Electronics maintains inventory and supply chain support for HIP6503CBZ to serve existing production and maintenance requirements through end-of-life phases.

HIP6503CBZ Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Applications:: Processor

Current - Supply:: 30mA

Voltage - Supply:: 4.75V ~ 5.25V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SOIC

HIP6503CBZ FAQ

1.How can I place an order for HIP6503CBZ through Aetrix?

Please submit a Request for Quotation (RFQ) for HIP6503CBZ 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 HIP6503CBZ reliable?

The price and inventory of HIP6503CBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HIP6503CBZ is usually 5 days.

3.What payment methods are accepted for HIP6503CBZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HIP6503CBZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HIP6503CBZ?

HIP6503CBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HIP6503CBZ 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 HIP6503CBZ?

For technical support, including HIP6503CBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HIP6503CBZ requirements.

6.How does Aetrix verify that HIP6503CBZ is sourced from the original manufacturer or authorized distributors?

All HIP6503CBZ 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 HIP6503CBZ meets industry standards.

7.What is the process for return or replacement of HIP6503CBZ?

All HIP6503CBZ units undergo pre-shipment inspection (PSI). If there is an issue with HIP6503CBZ, 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 HIP6503CBZ part is unused and in its original packaging.

Return procedure for HIP6503CBZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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