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Renesas EL7566AIREZ-T7
- Part No.:
- EL7566AIREZ-T7
- Manufacturer:
- Renesas
- Package:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
EL7566AIREZ-T7.pdf
- Description:
- IC REG BUCK ADJ 6A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,029
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Product details
Overview
EL7566AIREZ-T7 from Intersil is a 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-used in FPGA core supplies and DSP power rails.
For engineers reviewing the EL7566AIREZ-T7 datasheet, EL7566AIREZ-T7 pinout, EL7566AIREZ-T7 application, or EL7566AIREZ-T7 equivalent, key selection considerations include its -40°C to +85°C industrial temperature range, HTSSOP-28 package with exposed thermal pad, programmable 200kHz–1MHz switching frequency, integrated soft-start, and power-good indicator for system sequencing.
Technical Context
The EL7566AIREZ-T7 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 fixed-frequency continuous-conduction mode with slope compensation for full 100% duty ratio support.
It integrates overtemperature shutdown (135°C trip, 20°C hysteresis), overcurrent protection (~7.8A peak limit), and undervoltage lockout (2.6V startup, 2.4V shutdown), but omits overvoltage protection-distinguishing it from the EL7566DRE variant. The VTJ pin provides a linear 1.2V + 3.84mV/°C analog output proportional to junction temperature for real-time thermal monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - supports high-current FPGA/DSP core rails without external current boosting. |
| Input Voltage Range | 3V to 6V - compatible with single-cell Li-ion, 3.3V/5V intermediate bus, and USB PD-derived supplies. |
| Output Voltage Range | 0.8V to near VIN - enables low-voltage logic domains and adaptive voltage scaling via resistor divider. |
| Switching Frequency | 200kHz to 1MHz - adjustable via COSC capacitor; higher frequencies allow smaller inductors and <0.72in² PCB footprint. |
| Efficiency | Up to 96% - achieved using integrated low-RDS(on) PMOS (29mΩ typ) and NMOS (25mΩ typ) switches. |
| Thermal Range | -40°C to +85°C ambient - qualified for industrial embedded and automotive under-hood auxiliary applications. |
| Reference Accuracy | ±1.6% (1.24V–1.28V) - ensures tight output regulation across temperature and load for sensitive digital loads. |
Pinout & Package
EL7566AIREZ-T7 is housed in a 28-lead HTSSOP package with exposed thermal pad (Package Drawing MDP0048), RoHS-compliant Pb-free plus anneal finish, and moisture sensitivity level (MSL) rated per IPC/JEDEC J-STD-020 at Pb-free reflow temperatures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Error amplifier output | Connect Type I/II compensation network (RC, CC) to stabilize voltage loop; critical for transient response. |
| 3 (FB) | Voltage feedback input | Connects to resistor divider between VOUT and SGND; sets output voltage with ±1% initial accuracy. |
| 8–13 (LX) | High-current inductor drive | Six paralleled pins reduce conduction loss and EMI; average LX voltage equals regulated VOUT. |
| 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 | Supplies high-side PMOS drain; requires low-ESR ceramic input capacitors placed adjacent to these pins. |
| 22 (VDD) | Internal bias supply | Internally derived from VIN via 20Ω resistor; powers control circuitry-no external bypass needed. |
| 23 (PG) | Power-good indicator | Open-drain output active high when VOUT is within ±10% of target; used for supply sequencing and fault reporting. |
| 24 (EN) | Enable input | Active-high logic control with 2.5µA internal pull-up; capacitor to SGND adds programmable start delay. |
| 25 (STP), 26 (STN) | Tracking inputs | Enable synchronized startup with other regulators; STP tied to VO1, STN to VO2 for linear tracking. |
| 27 (COSC) | Oscillator timing | Connect capacitor to SGND to set switching frequency; 390pF yields ~370kHz (typ). |
| 28 (SGND) | Signal ground reference | Separate from PGND; connects all analog control circuitry grounds-must join PGND at single point near SGND pin. |
| 5 (VTJ), 6 (TM), 7 (SEL) | Thermal & margining interface | VTJ outputs junction temp voltage (1.2V + 3.84mV/°C); TM/SEL configure ±5% output margining for production test. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS/NMOS power FETs | Eliminates external MOSFETs and boot circuitry; reduces BOM count and layout complexity for compact 6A solutions. |
| 100% duty cycle operation | Enables VOUT ≈ VIN − (IOUT × RDS(on) + IOUT × RL), supporting ultra-low dropout in battery-powered systems. |
| Digital soft-start (2ms default) | Prevents inrush current during power-up; programmable extension via STP/STN allows coordinated multi-rail sequencing. |
| Junction temperature monitor (VTJ) | Provides calibrated analog voltage output for real-time thermal profiling-replaces external thermistors in thermal validation. |
| ±5% voltage margining | Configurable via TM/SEL pins for functional testing of downstream logic under over/under-voltage stress conditions. |
| Multiple supply tracking (STP/STN) | Supports cascade, linear, or offset startup modes-enables precise power-up ordering for complex SoC/FPGA platforms. |
Applications
| FPGA Core Supply | DSP Processor Rail |
|---|---|
Use Scenario: Powering Xilinx Artix-7 or Intel Cyclone V FPGA core logic at 1.0V/1.2V with dynamic current demand up to 5A. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated, low-noise voltage with fast transient response to handle logic switching spikes. Use Value: Integrated current-mode control and 6A capability eliminate need for external current-sense resistors or discrete FETs, reducing solution size by >30% vs. controller+MOSFET alternatives. |
Use Scenario: Supplying TI C6000 DSP I/O banks requiring 1.8V/3.3V at 3A with strict sequencing relative to core voltage. IC Role / Device Role / Timing Role: Secondary regulated rail synchronized to core supply via STP/STN pins to ensure safe power-up order. Use Value: Built-in tracking inputs and programmable soft-start enable deterministic multi-supply ramp timing without external sequencer ICs. |
| CPU I/O Voltage Regulator | Industrial Portable Equipment |
Use Scenario: Delivering 2.5V/3.3V to ARM Cortex-A series CPU I/O interfaces in ruggedized edge computing modules. IC Role / Device Role / Timing Role: High-reliability buck converter operating across -40°C to +85°C with overtemperature and overcurrent fault protection. Use Value: Industrial temperature rating, integrated thermal shutdown (135°C), and RoHS-compliant Pb-free packaging meet EN 50155 and IEC 60950-1 requirements. |
Use Scenario: Power management in handheld test instruments with Li-ion battery input (3.0–4.2V) and dual-output needs (1.2V logic + 3.3V peripherals). IC Role / Device Role / Timing Role: Main step-down regulator converting battery voltage to stable system rail, with margining support for factory calibration. Use Value: ±5% voltage margining via TM/SEL pins enables automated end-of-line functional testing without external voltage injectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 3A max output, 2MHz fixed frequency, no voltage margining or junction temp monitor; 8-pin SOIC package. | Limited to lower-current applications; lacks thermal diagnostics and production test features. | Select when cost-sensitive, space-constrained designs require only basic 3A regulation without advanced diagnostics. |
| TPS54620RGYT | 6A output, 2.5V–17V input, integrated MOSFETs, but no voltage margining; 16-pin QFN with thermal pad. | Broad input range suits 12V intermediate bus; missing TM/SEL pins eliminates built-in production margining capability. | Choose for wide-input industrial systems where margining is handled externally, and higher VIN tolerance is required. |
Compared with MP2451DT-LF-Z and TPS54620RGYT, EL7566AIREZ-T7 uniquely combines 6A capability, -40°C to +85°C operation, ±5% voltage margining, and junction temperature monitoring in a single HTSSOP-28 package-making it optimal for FPGA/DSP power delivery where production testability and thermal visibility are critical.
Availability
EL7566AIREZ-T7 is available at Aetrix Electronics and suitable for FPGA core supplies, DSP processor rails, and industrial portable equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for EL7566AIREZ-T7 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) designs high-performance analog and power management ICs, emphasizing efficiency, integration, and reliability for demanding industrial and communications applications.
The EL7566 product line delivers monolithic synchronous buck regulators optimized for point-of-load power delivery in FPGA, DSP, and CPU subsystems-designed to replace multi-component solutions with minimal external components and robust protection features.
FAQ
What is the operating temperature range for EL7566AIREZ-T7?
The EL7566AIREZ-T7 is rated for an ambient operating temperature range of -40°C to +85°C, verified per the AIRE grade qualification. This extends beyond the standard DRE grade (0°C to +85°C) and makes EL7566AIREZ-T7 suitable for industrial and automotive auxiliary applications where extended thermal performance is required. The junction temperature indicator (VTJ pin) remains functional across this full range.
Does EL7566AIREZ-T7 include overvoltage protection (OVP)?
No, EL7566AIREZ-T7 does not include overvoltage protection. Per the datasheet's "EL7566DRE vs. EL7566AIRE" section, OVP was removed in the AIRE variant. The device retains overcurrent, overtemperature, and undervoltage lockout protections-but output overvoltage events must be managed externally via system-level supervision or upstream protection circuitry. This distinguishes EL7566AIREZ-T7 from the DRE-grade versions.
How is the switching frequency set on EL7566AIREZ-T7?
The switching frequency of EL7566AIREZ-T7 is set by an external capacitor connected from the COSC pin (Pin 27) to SGND. Using a 390pF capacitor yields a typical frequency of 370kHz; values from 100pF to 1000pF support 200kHz–1MHz range. For external synchronization, a sync signal can be applied via the circuit in Figure 20 of FN7102, with self-switching frequency set ~20% lower than the sync source to accommodate tolerance.
What is the purpose of the TM and SEL pins on EL7566AIREZ-T7?
The TM (Pin 6) and SEL (Pin 7) pins enable ±5% output voltage margining for manufacturing validation. When TM = high and SEL = high, output shifts +5%; TM = high and SEL = low shifts output –5%; both grounded yields nominal regulation. This feature allows functional testing of downstream logic under controlled over/under-voltage stress without external hardware-directly supported in EL7566AIREZ-T7 and absent in DRE variants.
Can EL7566AIREZ-T7 operate at 100% duty cycle, and what is the minimum output voltage?
Yes, EL7566AIREZ-T7 supports true 100% duty cycle operation due to its integrated PMOS high-side switch, enabling VOUT ≈ VIN − (IOUT × RDS(on) + IOUT × RL). The minimum regulated output voltage is 0.8V, set by the internal 1.25V reference and FB pin divider network. Output voltages below 0.8V are not supported, and the device cannot regulate below this threshold even at 100% duty.
EL7566AIREZ-T7 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
EL7566AIREZ-T7 FAQ
1.How can I place an order for EL7566AIREZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7566AIREZ-T7 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 EL7566AIREZ-T7 reliable?
The price and inventory of EL7566AIREZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7566AIREZ-T7 is usually 5 days.
3.What payment methods are accepted for EL7566AIREZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7566AIREZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7566AIREZ-T7?
EL7566AIREZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7566AIREZ-T7 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 EL7566AIREZ-T7?
For technical support, including EL7566AIREZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7566AIREZ-T7 requirements.
6.How does Aetrix verify that EL7566AIREZ-T7 is sourced from the original manufacturer or authorized distributors?
All EL7566AIREZ-T7 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 EL7566AIREZ-T7 meets industry standards.
7.What is the process for return or replacement of EL7566AIREZ-T7?
All EL7566AIREZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with EL7566AIREZ-T7, 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 EL7566AIREZ-T7 part is unused and in its original packaging.
Return procedure for EL7566AIREZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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