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Renesas EL7566DREZ-T13
- Part No.:
- EL7566DREZ-T13
- Manufacturer:
- Renesas
- Package:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
EL7566DREZ-T13.pdf
- Description:
- IC REG BUCK ADJ 6A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,741
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Product details
Overview
EL7566DREZ-T13 from Intersil is a monolithic synchronous step-down DC/DC regulator delivering up to 6A continuous output current with 96% peak efficiency, operating from 3V–6V input and supporting adjustable output voltages down to 0.8V. It integrates PMOS/NMOS power FETs, features 100% duty cycle capability, and includes junction temperature monitoring and ±5% voltage margining for manufacturing validation.
For engineers reviewing the EL7566DREZ-T13 datasheet, EL7566DREZ-T13 pinout, EL7566DREZ-T13 application, or EL7566DREZ-T13 equivalent, key selection considerations include its 28-pin HTSSOP package with exposed thermal pad, fixed 0°C to +85°C ambient operating range, integrated soft-start and power-good signaling, and programmable switching frequency up to 1MHz for compact board layout.
Technical Context
The EL7566DREZ-T13 employs peak current-mode control with on-chip resistorless current sensing derived from the high-side PMOS switch, enabling fast transient response and stable operation across load and line variations. Its PWM controller supports external synchronization and operates in constant-frequency mode with digitally controlled soft-start.
Thermal protection triggers at 135°C junction temperature with 20°C hysteresis, while overvoltage protection shuts down the high-side FET if output exceeds 110% of regulation. The device uses an internal 20Ω resistor to derive VDD from VIN and provides a junction temperature indicator (VTJ) output voltage linearly proportional to die temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - supports FPGA core, DSP, and CPU I/O rail loads without external current boosting |
| Input Voltage Range | 3V to 6V - compatible with single-cell Li-ion, 3.3V/5V system rails, and intermediate bus architectures |
| Output Voltage Range | 0.8V to near VIN - enables low-voltage logic supplies and high-efficiency buck-boost-like operation via 100% duty cycle |
| Switching Frequency | Adjustable up to 1MHz - allows use of small inductors (e.g., 2.7µH) and <0.72 in² one-side PCB footprint |
| Efficiency | Up to 96% - minimizes thermal dissipation in space-constrained point-of-load applications |
| Protection Features | Overvoltage (110% trip), overcurrent (~7.8A peak limit), thermal shutdown (135°C), and power-on reset - ensures robust field operation |
| Margining Accuracy | ±5% output shift - enables automated functional testing of downstream logic under voltage stress conditions |
Pinout & Package
EL7566DREZ-T13 is housed in a RoHS-compliant 28-lead HTSSOP package (MDP0048) with exposed thermal pad, optimized for thermal conduction to PCB ground planes via soldered pad and thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Error amplifier output | Connects to RC compensation network for loop stability; critical for transient response tuning |
| 3 (FB) | Voltage feedback input | Senses output via external resistor divider; sets regulated output voltage (e.g., 2.5V with 21.5kΩ/10kΩ) |
| 8–13 (LX) | Inductor drive node | High-current switched node connecting to inductor; six parallel pins reduce trace resistance and EMI |
| 16–18 (PGND) | Power ground return | Low-side FET source connection; must be tied directly to thermal pad and high-copper-area ground plane |
| 19–21 (VIN) | Main power input | 3V–6V supply input; three pins minimize IR drop and improve current sharing into internal PMOS FET |
| 22 (VDD) | Internal bias supply | Derived from VIN through 20Ω internal resistor; powers control circuitry independently of LX switching noise |
| 23 (PG) | Power-good indicator | Open-drain output asserting high when output is within ±10% of target - used for supply sequencing and system enable |
| 24 (EN) | Enable input | Active-high logic control with 2.5µA internal pull-up; capacitor delay possible for staggered start-up |
| 25 (STP), 26 (STN) | Tracking inputs | Enable synchronized start-up with auxiliary supplies; STP tied to VO1, STN to VO2 for linear tracking |
| 27 (COSC) | Oscillator timing | Connects to timing capacitor (e.g., 390pF for ~370kHz); sets switching frequency and enables external sync |
| 28 (SGND) | Signal ground reference | Separate from PGND; connects to FB, COMP, VREF, and other analog control nodes to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS/NMOS FETs | Eliminates need for external high-side gate driver or bootstrap capacitor; simplifies layout and reduces BOM count |
| Junction temperature monitor (VTJ) | Provides analog voltage output (1.2V + 3.84mV/°C) for real-time thermal characterization without external sensors |
| Programmable voltage margining | Shifts output ±5% via TM/SEL pin combinations - enables production-level functional margin testing without firmware changes |
| Multiple start-up control modes | Supports adjustable soft-start, cascade, linear tracking, and offset tracking - essential for multi-rail FPGA/CPU power sequencing |
| 100% duty cycle operation | Allows output voltage to approach VIN minus PMOS RDS(on) and inductor DCR drop - extends usable input-output differential range |
Applications
| FPGA Core Supply | DSP/Processor I/O Rail |
|---|---|
Use Scenario: Powering Xilinx or Intel FPGA core logic requiring tightly regulated 0.8V–1.2V at up to 6A with fast load transients. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable core voltage with <2ms digital soft-start and ±1% initial accuracy. Use Value: Integrated current-mode control and 1MHz switching enable sub-100mV droop during 4A/µs load steps, reducing need for large bulk capacitance. |
Use Scenario: Generating 1.8V or 2.5V I/O supply for TI C6000 DSPs or ARM-based SoCs with strict sequencing requirements relative to core voltage. IC Role / Device Role / Timing Role: Secondary regulated rail synchronized via STP/STN pins to track core supply ramp-up and avoid bus contention. Use Value: Built-in tracking inputs eliminate external comparators or discrete timing circuits, cutting solution size by >30% versus discrete sequencer approaches. |
| Logic/Bus Voltage Regulator | Portable Equipment Power Management |
Use Scenario: Providing 3.3V or 2.5V for PCI Express, DDR memory termination, or high-speed serial buses in telecom line cards. IC Role / Device Role / Timing Role: High-efficiency buck converter with power-good signaling to enable downstream interface ICs only after stable regulation. Use Value: 96% peak efficiency at 6A reduces heat generation in dense backplane slots, allowing passive cooling in fanless designs. |
Use Scenario: Converting single-cell Li-ion (3.0–4.2V) to 1.2V or 1.5V for ultra-low-power microcontrollers or sensor hubs in handheld medical devices. IC Role / Device Role / Timing Role: Compact, thermally efficient regulator using HTSSOP package with exposed pad for direct PCB heat sinking. Use Value: 0.72 in² one-side footprint and integrated thermal monitoring support miniaturized, battery-operated form factors with validated thermal safety margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-Z | 4A rated, 2.5–5.5V input, 1.2MHz fixed frequency, no voltage margining or junction temp monitor | Lacks margining and VTJ output; suitable only where those features are unused | Select when cost sensitivity outweighs need for production test features and thermal diagnostics |
| TPS54620RGYT | 6A rated, 4.5–17V input, 2.5–1.2MHz adjustable frequency, integrated MOSFETs, but no ±5% margining | Wider input range and higher max VIN; lacks built-in voltage stress test capability | Prefer for industrial systems with >6V input rails, but requires external circuitry for margining validation |
Compared with MP2315DJ-LF-Z and TPS54620RGYT, the EL7566DREZ-T13 uniquely combines 6A capability, 3–6V input optimization, ±5% voltage margining, and junction temperature monitoring in a single 28-pin HTSSOP package-making it the only choice for FPGA/CPU power validation workflows requiring in-situ voltage stress and thermal telemetry.
Availability
EL7566DREZ-T13 is available at Aetrix Electronics and suitable for FPGA core supplies, DSP I/O rails, and portable equipment power management requiring stable component supply, RoHS compliance, and long-term lifecycle support.
Supply support for EL7566DREZ-T13 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 analog and power management IC designer known for high-performance DC/DC regulators, precision amplifiers, and interface solutions.
The EL7566 product line was engineered specifically for high-current, low-voltage point-of-load regulation in FPGA, DSP, and CPU applications-emphasizing thermal intelligence, sequencing flexibility, and production-test readiness.
FAQ
What is the operating temperature range for the EL7566DREZ-T13?
The EL7566DREZ-T13 is specified for 0°C to +85°C ambient operating temperature. This range is confirmed in the Ordering Information table of the FN7102 datasheet and applies to all EL7566DRE/DREZ variants. It does not support the extended –40°C to +85°C range offered by the EL7566AIREZ series.
Does the EL7566DREZ-T13 support external synchronization of its switching frequency?
Yes, the EL7566DREZ-T13 supports external synchronization via its COSC pin using the circuit shown in Figure 20 of the FN7102 datasheet. The internal oscillator must be set 20% below the sync frequency to accommodate component tolerances, and synchronization is compatible with TTL/CMOS clock sources.
How is voltage margining implemented on the EL7566DREZ-T13?
Voltage margining on the EL7566DREZ-T13 is controlled by the TM and SEL pins per Table 2 in the FN7102 datasheet: TM = 1, SEL = 1 raises output +5%; TM = 1, SEL = 0 lowers output –5%; both grounded yields nominal output. No external components are required beyond pull-down resistors if pins are left unconnected.
What thermal management practices are required for the EL7566DREZ-T13?
The EL7566DREZ-T13 requires soldering of its exposed thermal pad to a PCB ground plane with ≥13 thermal vias (25 mil diameter) connecting to inner-layer copper. Layout must separate PGND and SGND, maximize copper area under the pad, and avoid thermal reliefs on vias-per Figure 25 and Thermal Management section of FN7102.
Is the EL7566DREZ-T13 pin-compatible with the EL7566DRE-T13?
Yes, the EL7566DREZ-T13 is pin-compatible and functionally identical to the EL7566DRE-T13, differing only in Pb-free RoHS-compliant packaging (annealed matte tin finish). Both share identical pinout, electrical specifications, thermal characteristics, and ordering markings except for the "Z" suffix denoting RoHS compliance.
EL7566DREZ-T13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
EL7566DREZ-T13 FAQ
1.How can I place an order for EL7566DREZ-T13 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7566DREZ-T13 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 EL7566DREZ-T13 reliable?
The price and inventory of EL7566DREZ-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7566DREZ-T13 is usually 5 days.
3.What payment methods are accepted for EL7566DREZ-T13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7566DREZ-T13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7566DREZ-T13?
EL7566DREZ-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7566DREZ-T13 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 EL7566DREZ-T13?
For technical support, including EL7566DREZ-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7566DREZ-T13 requirements.
6.How does Aetrix verify that EL7566DREZ-T13 is sourced from the original manufacturer or authorized distributors?
All EL7566DREZ-T13 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 EL7566DREZ-T13 meets industry standards.
7.What is the process for return or replacement of EL7566DREZ-T13?
All EL7566DREZ-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7566DREZ-T13, 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 EL7566DREZ-T13 part is unused and in its original packaging.
Return procedure for EL7566DREZ-T13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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