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Renesas ISL6534CV-TR5229
- Part No.:
- ISL6534CV-TR5229
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ISL6534CV-TR5229.pdf
- Description:
- IC REG TRP BK/LNR SYNC 24EPTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,318
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Product details
Overview
ISL6534CV-TR5229 from Renesas (formerly Intersil) is a triple-output power management IC integrating two synchronous buck PWM controllers (OUT1, OUT2) and one linear controller (OUT3), supporting DDR memory regulation with 0.6V/3.3V references, 300kHz–1MHz adjustable switching frequency, and independent soft-start/enable per channel. It delivers precision voltage regulation for CPU core, DDR VDDQ/VTT, and auxiliary rails in embedded computing systems.
For engineers reviewing the ISL6534CV-TR5229 datasheet, ISL6534CV-TR5229 pinout, ISL6534CV-TR5229 application, or ISL6534CV-TR5229 equivalent, this device supports DDR mode with 90° phase shift, shunt-regulated 5.8V VCC operation, PGOOD monitoring, and gate drivers capable of 12V UGATE/13.2V LGATE output - critical for high-efficiency multi-rail server and telecom power designs.
Technical Context
The ISL6534CV-TR5229 implements voltage-mode control for both buck regulators, with independent error amplifiers (COMP1/COMP2), 0.6V internal reference for OUT1, and external REFIN input for OUT2 enabling DDR tracking. Its FS_SYNC pin supports resistor-based frequency tuning (300kHz–1MHz) or external clock synchronization to eliminate beat frequencies.
OUT3 operates as a linear controller driving an external N-channel MOSFET with 0.6V reference, while REFOUT provides buffered VTT reference output. The PGOOD function monitors all three outputs' soft-start completion and short-circuit conditions via COMP pin filtering over 1–2 oscillator cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 12V ±10% for VCC12; 5V ±5% or 5.8V ±0.2V (shunt mode) for VCC - enables dual-supply flexibility in legacy and space-constrained designs |
| Output Voltage Ranges | OUT1/OUT2: 0.6V–6.0V; OUT3: 0.6V–3.3V - supports DDR2/3 VDDQ (1.8V/1.5V) and VTT (0.9V/0.75V) with tight 0.6V reference accuracy |
| Switching Frequency | 300kHz default (FS_SYNC to GND); up to 1MHz via resistor - balances efficiency vs. EMI and allows input capacitor size reduction |
| Gate Drive Capability | UGATE1/2: 27V max; LGATE1/2: 13.2V max; DRIVE3: 9V source - drives standard logic-level MOSFETs without level-shifting |
| Reference Outputs | VREF = 3.307V ±0.063V; REFOUT buffered copy of REFIN; 0.6V internal reference for OUT1/OUT3 - enables precise feedback without external references |
| Soft-Start Control | 30µA current source per SS/EN pin; 1.05V enable threshold - allows independent or ganged startup sequencing across three rails |
| Thermal Performance | θJA = 37°C/W (TSSOP); θJC = 4°C/W - requires exposed pad soldering to PCB ground plane for reliable 0°C–70°C operation |
Pinout & Package
ISL6534CV-TR5229 uses a 24-lead Exposed-Pad Thin Shrink Small Outline Package (EPTSSOP), JEDEC MO-220 compliant, with thermal pad tied to GND for enhanced heat dissipation. Pin functions are validated per FN9134 Rev 2.00 datasheet Figure 1 (24 LD EPTSSOP top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS1/EN1, SS2/EN2, SS3/EN3 | Soft-start/Enable input | 30µA current source charges external capacitor; <1.0V disables regulator - enables coordinated or independent rail sequencing |
| FB1, FB2, FB3 | Feedback input | Compares output divider voltage to 0.6V (OUT1/OUT3) or REFIN (OUT2) - sets regulated output voltage with resistor divider |
| UGATE1, UGATE2 | Upper gate driver output | Drives high-side N-MOSFET gate with bootstrap voltage - requires external diode/capacitor network for proper bootstrapping |
| LGATE1, LGATE2 | Lower gate driver output | Drives low-side N-MOSFET gate directly from VCC12 - eliminates need for external level shifter in synchronous buck topology |
| DRIVE3 | Linear regulator gate driver | Drives external N-channel MOSFET for OUT3 - supports adjustable linear output up to 3.3V with 9V drive capability |
| PGOOD | Power-good indicator | Open-drain output pulled high only after all three soft-start ramps complete and no COMP short detected - enables system power sequencing |
| REFIN / REFOUT | External reference input / buffered output | REFIN sets OUT2 reference (e.g., VDDQ/2 for DDR); REFOUT buffers REFIN for VTT generation - enables single-source tracking in memory subsystems |
| VCC12, VCC, GND, PGND | Power and ground terminals | VCC12 powers gate drivers (12V); VCC powers control logic (5V or 5.8V shunt); PGND separates power return paths to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronous buck + linear regulator | Integrates three independent regulators in one IC - reduces BOM count and board area vs. discrete solutions for multi-rail applications |
| DDR-specific timing modes | 90° phase shift between buck channels and shared SS/EN in DDR mode - minimizes input ripple current and improves EMI performance |
| Shunt-regulated VCC option | Generates 5.8V ±0.2V from 12V supply using external 150Ω resistor - eliminates need for separate 5V rail in compact power systems |
| Independent soft-start per channel | Three dedicated SS/EN pins with 30µA current sources - enables staggered startup to limit inrush current in high-capacitance loads |
| PGOOD with short-circuit detection | Monitors COMP pins for overcurrent; shuts down all outputs if fault persists >1–2 clock cycles - prevents damage during load faults |
| Resistor-programmable frequency | FS_SYNC pin accepts resistor-to-ground to scale frequency from 300kHz to 1MHz - allows optimization for efficiency (low f) or size (high f) |
Applications
| DDR Memory Power Supply | CPU Core Voltage Regulation |
|---|---|
|
Use Scenario: Providing tightly regulated VDDQ (1.8V/1.5V) and VTT (0.9V/0.75V) for DDR2/DDR3 SDRAM modules in servers and networking equipment. IC Role / Device Role / Timing Role: OUT1 regulates VDDQ; OUT2 tracks VDDQ/2 via REFIN for VTT; OUT3 supplies auxiliary bias - all synchronized to avoid beat frequencies. Use Value: 90° phase shift between buck channels reduces peak input current by ~30%, allowing smaller bulk capacitors and lower EMI filter cost. |
Use Scenario: Delivering dynamically scaled core voltage (0.6V–1.5V) to microprocessors in industrial control and embedded computing platforms. IC Role / Device Role / Timing Role: OUT1 acts as primary core regulator with 0.6V reference; OUT2 supplies I/O voltage; OUT3 powers PLL or clock buffer - each with independent soft-start. Use Value: Independent SS/EN pins enable precise sequencing: core voltage ramps before I/O, preventing latch-up during power-up. |
| Telecom Baseband Power | Multi-Rail FPGA Power System |
|
Use Scenario: Generating multiple low-noise rails (1.2V, 1.8V, 2.5V) for baseband processors and analog front-ends in wireless infrastructure equipment. IC Role / Device Role / Timing Role: OUT1 and OUT2 operate in independent mode with 180° phase shift; OUT3 supplies clean 3.3V bias - all referenced to same VREF. Use Value: Phase-shifted switching reduces RMS input current by 25%, lowering thermal stress on input capacitors and PCB traces. |
Use Scenario: Powering FPGA core (0.85V), I/O banks (1.2V/1.8V), and configuration circuitry (3.3V) in programmable logic systems. IC Role / Device Role / Timing Role: OUT1 regulates core; OUT2 regulates I/O; OUT3 supplies configuration voltage - PGOOD confirms all rails stable before FPGA config begins. Use Value: Single PGOOD output simplifies system power management logic and eliminates need for external OR-ing circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6522CRZ | Single synchronous buck controller with integrated MOSFET drivers; no linear regulator or third output - lacks OUT3 and REFIN/REFOUT functionality | Suitable only for dual-rail applications; cannot replace ISL6534CV-TR5229 in DDR VTT generation or auxiliary linear bias scenarios | Select when only two switching rails are needed and board space permits separate linear LDO for third rail |
| TPS51220ARUKT | TI dual buck controller with integrated MOSFET drivers; supports DDR VTT but uses internal VTT reference instead of buffered REFOUT - no external REFIN input | Lacks independent linear regulator channel; VTT generation is fixed-function rather than configurable via REFIN/REFOUT | Choose for cost-sensitive DDR-only designs where VTT must track VDDQ without external divider flexibility |
Compared with ISL6534CV-TR5229, ISL6522CRZ omits the linear regulator and third feedback path, limiting it to dual-rail use; TPS51220ARUKT integrates DDR VTT but removes REFIN programmability and external linear control - making ISL6534CV-TR5229 uniquely suited for flexible multi-rail, mixed-mode (switching + linear) power architectures.
Availability
ISL6534CV-TR5229 is available at Aetrix Electronics and suitable for DDR memory power supplies, CPU core voltage regulation, telecom baseband systems, and multi-rail FPGA power systems requiring stable component supply and long-term production continuity.
Supply support for ISL6534CV-TR5229 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 Corporation (formerly Intersil) is a global semiconductor leader specializing in analog, power management, and embedded processing solutions for industrial, automotive, and communications markets.
The ISL6534CV-TR5229 belongs to Renesas' high-density multi-rail power management IC family, designed specifically for DDR memory subsystems and complex embedded computing platforms requiring precise, sequenced, and phase-controlled voltage regulation.
FAQ
What is the package type and lead finish of ISL6534CV-TR5229?
ISL6534CV-TR5229 uses a 24-lead Exposed-Pad Thin Shrink Small Outline Package (EPTSSOP) with Pb-free plus anneal termination finish, compliant with RoHS and compatible with both SnPb and Pb-free soldering processes. The exposed thermal pad must be soldered to a PCB ground plane for thermal and electrical integrity.
Can ISL6534CV-TR5229 operate without a 5V supply?
Yes. ISL6534CV-TR5229 supports shunt-regulated operation: connecting a 150Ω resistor from VCC to VCC12 generates a nominal 5.8V supply, eliminating the need for an external 5V rail. This mode maintains full functionality including PGOOD, soft-start, and reference outputs.
How does ISL6534CV-TR5229 support DDR memory VTT regulation?
ISL6534CV-TR5229 supports DDR VTT regulation by using OUT2 in tracking mode: VOUT1 (VDDQ) is divided by two and applied to REFIN, causing OUT2 to regulate at half VDDQ. REFOUT buffers this reference for external VTT generation, while 90° phase shift between buck channels minimizes input ripple.
What is the role of the FS_SYNC pin on ISL6534CV-TR5229?
The FS_SYNC pin on ISL6534CV-TR5229 serves dual purposes: pulling it to ground with a resistor sets switching frequency from 300kHz to 1MHz; applying an external clock signal synchronizes both buck regulators to that frequency - preventing low-frequency beat interference in multi-controller systems.
Does ISL6534CV-TR5229 include overcurrent protection?
Yes. ISL6534CV-TR5229 monitors COMP1 and COMP2 pins for undervoltage conditions indicating switcher short-circuits. If a fault persists beyond 1–2 internal oscillator cycles (~3.3µs each), it asserts PGOOD low and shuts down all three outputs to protect downstream components.
ISL6534CV-TR5229 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (2), Linear (LDO) (1)
- Number of Outputs:
- 3
- Frequency - Switching:
- 300kHz ~ 1MHz
- Voltage/Current - Output 1:
- Controller
- Voltage/Current - Output 2:
- Controller
- Voltage/Current - Output 3:
- Controller
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 3.3V ~ 12V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP-EP
ISL6534CV-TR5229 FAQ
1.How can I place an order for ISL6534CV-TR5229 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6534CV-TR5229 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 ISL6534CV-TR5229 reliable?
The price and inventory of ISL6534CV-TR5229 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6534CV-TR5229 is usually 5 days.
3.What payment methods are accepted for ISL6534CV-TR5229?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6534CV-TR5229 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6534CV-TR5229?
ISL6534CV-TR5229 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6534CV-TR5229 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 ISL6534CV-TR5229?
For technical support, including ISL6534CV-TR5229 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6534CV-TR5229 requirements.
6.How does Aetrix verify that ISL6534CV-TR5229 is sourced from the original manufacturer or authorized distributors?
All ISL6534CV-TR5229 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 ISL6534CV-TR5229 meets industry standards.
7.What is the process for return or replacement of ISL6534CV-TR5229?
All ISL6534CV-TR5229 units undergo pre-shipment inspection (PSI). If there is an issue with ISL6534CV-TR5229, 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 ISL6534CV-TR5229 part is unused and in its original packaging.
Return procedure for ISL6534CV-TR5229:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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