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Renesas EL7532IY
- Part No.:
- EL7532IY
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7532IY.pdf
- Description:
- IC REG BUCK ADJ 2A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,674
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Product details
Overview
EL7532IY from Intersil is a synchronous, integrated-FET 2A step-down DC/DC regulator with internal compensation, operating from 2.5V to 5.5V input and delivering adjustable output (0.8V–VIN) via external resistor divider. It features 1.5MHz PWM switching, 100ms open-drain POR output, <1µA shutdown current, and over-temperature protection. Used in Li-ion-powered portable instruments and FPGA/ASIC core supplies.
For engineers reviewing the EL7532IY datasheet, EL7532IY pinout, EL7532IY application, or EL7532IY equivalent, key selection criteria include its MSOP10 footprint (<0.18 in²), internally compensated voltage-mode control, 94% peak efficiency at 2A, thermal shutdown threshold at +145°C, and compatibility with single-sided PCB layouts.
Technical Context
The EL7532IY implements a fixed-frequency voltage-mode PWM controller with integrated PMOS/NMOS power FETs (RDS(ON) = 52mΩ / 35mΩ typ.), enabling 100% duty-cycle operation for near-input-output tracking. Its internal compensation eliminates external loop components, requiring only two 10–22µF ceramic capacitors and a 1.5–2.2µH inductor.
It integrates dual ground domains (PGND for power stage, SGND for controller), a dedicated RSI reset input for POR retriggering, and soft-start (650µs). Thermal shutdown activates at +145°C with +15°C hysteresis, and POR asserts low for 80–120ms after VOUT reaches regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous across –40°C to +85°C ambient; supports full-load operation without derating in standard industrial environments. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single Li-ion (3.0–4.2V), 3.3V, and 5V rails without external pre-regulation. |
| Switching Frequency | 1.35–1.65MHz typical; enables compact magnetics and low-profile 1.8µH inductors while maintaining EMI manageability. |
| Feedback Voltage | 800mV ±10mV; sets output via resistor divider (VO = 0.8V × (1 + R2/R1)), enabling precise 0.8V–VIN adjustment. |
| Shutdown Current | <1µA at VIN = 5V; minimizes battery drain in standby mode for portable devices. |
| POR Delay | 80–120ms; provides stable power-good assertion for downstream logic initialization after output regulation. |
| Thermal Shutdown | Triggers at +145°C junction, latches off until cooldown to +130°C; protects against sustained overload or poor heatsinking. |
Pinout & Package
The EL7532IY is housed in a 10-pin MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm max height, RoHS-compliant with matte tin e3 terminations. Designed for single-sided assembly with minimal PCB area (<0.18 in² for full converter).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SGND) | Signal Ground | Reference return for controller circuitry; must be isolated from PGND and joined at single point near FB/VO pins. |
| 2 (PGND) | Power Ground | High-current return path for LX and VIN; requires large copper pour and multiple vias for thermal and EMI performance. |
| 3 (LX) | Switch Node | Drives external inductor; carries high di/dt square wave; must be routed short and wide to minimize ringing and EMI. |
| 4 (VIN) | Power Input | Supplies NMOS/PMOS power stage; requires local 10–22µF ceramic capacitor placed adjacent to VIN and PGND. |
| 5 (VDD) | Controller Supply | Bias supply for internal logic and gate drivers; decoupled internally but benefits from local 0.1µF capacitor. |
| 6 (RSI) | Reset Input | Active-HI signal that forces immediate POR low pulse; connect to GND if unused to prevent floating. |
| 7 (EN) | Enable | Active-HI logic input; ties directly to VIN for automatic startup; pulls down to disable and reduce IQ to <1µA. |
| 8 (POR) | Power-On Reset | Open-drain output; sinks 5mA; requires external pull-up (e.g., 100kΩ) to generate 100ms delayed power-good signal. |
| 9 (VO) | Output Sense | Direct connection to regulated output node; used with FB to close feedback loop and reject load-induced noise. |
| 10 (FB) | Feedback Input | Monitors resistive divider output; 800mV reference enables accurate output setting; sensitive to layout parasitics. |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Controller | Eliminates need for external compensation network; reduces BOM count and design risk for stable 2A operation with 10–22µF ceramics. |
| Synchronous Dual-FET Integration | Integrated 52mΩ PMOS and 35mΩ NMOS switches enable >94% efficiency and eliminate external bootstrap capacitor. |
| 100% Duty-Cycle Capability | PMOS upper switch allows VO to track VIN closely (VO ≈ VIN – IO×(RDS(ON)+RL)), critical for low-dropout applications. |
| Dual Ground Architecture | Separate SGND and PGND pins minimize noise coupling between sensitive analog circuitry and high-current power paths. |
| Programmable POR Timing | Fixed 100ms delay with RSI retrigger capability enables flexible system-level reset sequencing without external timers. |
Applications
| Portable Instrument Power | FPGA Core Supply |
|---|---|
Use Scenario: Handheld multimeters and portable oscilloscopes powered by single Li-ion cells (3.0–4.2V). IC Role / Device Role / Timing Role: Primary 2A step-down regulator generating 1.2V/1.8V core voltage from battery input. Use Value: Delivers full 2A load with >92% efficiency at 3.3VIN/1.8VOUT, minimizing heat rise in sealed enclosures. |
Use Scenario: Core voltage supply for Xilinx Spartan-7 or Intel MAX 10 FPGAs in edge-sensing modules. IC Role / Device Role / Timing Role: Adjustable 0.8–1.2V output regulator with tight load regulation (±0.5%) and fast transient response. Use Value: Meets FPGA core rail accuracy and ripple requirements (<20mVpp) using only 10µF ceramic output capacitance. |
| Barcode Reader System Rail | Set-Top Box SoC Supply |
Use Scenario: Embedded barcode scanners requiring 3.3V I/O and 1.1V processor core from 5V USB input. IC Role / Device Role / Timing Role: Dual-rail generation via cascaded EL7532IY outputs (5V→3.3V, then 3.3V→1.1V). Use Value: 1.5MHz switching enables small 1.8µH inductors and avoids AM radio band interference. |
Use Scenario: Main SoC supply in cable set-top boxes where 1.0V/2A must be derived from 3.3V or 5V backplane. IC Role / Device Role / Timing Role: High-efficiency, thermally robust point-of-load regulator with POR coordination for boot sequence. Use Value: Thermal shutdown at +145°C prevents latch-up during sustained video decode loads; POR ensures clean SoC reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8002 | Lower 600mA rating, 3MHz switching, no integrated POR, different pinout (8-pin SOIC). | Targeted at ultra-compact, low-power applications; lacks 2A capability and power-good signaling. | Select ISL8002 only when load current ≤600mA and POR is handled externally. |
| ISL8002A | Same 600mA rating as ISL8002 but adds internal soft-start and improved light-load efficiency; still no POR or 2A capability. | Preferred over ISL8002 for battery-sensitive designs, but insufficient for 2A FPGA/ASIC loads. | Choose ISL8002A for sub-1A portable systems needing better light-load performance; not a functional replacement for EL7532IY. |
Compared with EL7532IY, both ISL8002 and ISL8002A offer higher switching frequencies and lower quiescent current but lack the 2A output, integrated POR, and thermal robustness required for industrial portable and embedded computing applications - making them suitable only for lighter loads where board space is more constrained than current demand.
Availability
EL7532IY is available at Aetrix Electronics and suitable for portable instrumentation, FPGA core supplies, and Li-ion-powered consumer electronics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7532IY 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 is a leading provider of precision analog and power management ICs, now part of Renesas Electronics, with deep expertise in high-efficiency DC/DC conversion and thermal-aware design.
The EL7532IY belongs to Intersil's monolithic synchronous buck regulator product line, engineered for space-constrained, battery-operated portable and embedded systems demanding high current density and reliable power sequencing.
FAQ
What is the maximum output current capability of the EL7532IY across temperature?
The EL7532IY delivers 2A continuous output current over the full –40°C to +85°C ambient temperature range, verified per datasheet testing conditions (VIN = 3.3V, VO = 1.8V, 10µF ceramic output cap). Derating is not required within this range due to integrated thermal protection and low RDS(ON) FETs. The EL7532IY maintains regulation up to 2.4A peak current under transient conditions.
Does the EL7532IY require external compensation components?
No, the EL7532IY features an internally compensated voltage-mode PWM controller, eliminating the need for external compensation networks. This simplifies design and improves stability margin when using recommended 10–22µF ceramic input/output capacitors and a 1.5–2.2µH inductor. The EL7532IY's fixed compensation is optimized for this component range and does not support external loop tuning.
How is the Power-On-Reset (POR) function implemented on the EL7532IY?
The EL7532IY provides an open-drain POR output (Pin 8) that remains low for 80–120ms after the output voltage reaches regulation. It can be retriggered instantly by asserting the active-HI RSI input (Pin 6). An external pull-up resistor (e.g., 100kΩ to VOUT) is required to generate a logic-HI power-good signal. The EL7532IY POR timing is factory-trimmed and does not require configuration.
Can the EL7532IY operate with input voltage equal to the desired output voltage?
Yes, the EL7532IY supports 100% duty-cycle operation using its integrated PMOS high-side switch, allowing VO to approach VIN minus IO×(RDS(ON)+RL). For example, with VIN = 3.3V, VO can reach ~3.1V at 2A. This makes the EL7532IY suitable for low-dropout applications where traditional buck regulators would fail. The EL7532IY achieves this without a bootstrap capacitor.
What are the thermal limitations and protection mechanisms of the EL7532IY?
The EL7532IY incorporates over-temperature protection that disables both power FETs when junction temperature reaches +145°C (typical), with restart occurring at +130°C (15°C hysteresis). Its MSOP10 package has θJA = 115°C/W on standard FR-4; thermal performance improves to ~100°C/W with 4-layer board copper enhancements. The EL7532IY's fused-lead construction aids heat dissipation, and layout guidelines emphasize PGND copper area and thermal vias.
EL7532IY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
EL7532IY FAQ
1.How can I place an order for EL7532IY through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7532IY 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 EL7532IY reliable?
The price and inventory of EL7532IY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7532IY is usually 5 days.
3.What payment methods are accepted for EL7532IY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7532IY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7532IY?
EL7532IY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7532IY 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 EL7532IY?
For technical support, including EL7532IY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7532IY requirements.
6.How does Aetrix verify that EL7532IY is sourced from the original manufacturer or authorized distributors?
All EL7532IY 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 EL7532IY meets industry standards.
7.What is the process for return or replacement of EL7532IY?
All EL7532IY units undergo pre-shipment inspection (PSI). If there is an issue with EL7532IY, 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 EL7532IY part is unused and in its original packaging.
Return procedure for EL7532IY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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