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Renesas EL7532IY-T7
- Part No.:
- EL7532IY-T7
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7532IY-T7.pdf
- Description:
- IC REG BUCK ADJ 2A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,244
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Product details
Overview
EL7532IY-T7 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 from 0.8V to VIN. 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-T7 datasheet, EL7532IY-T7 pinout, EL7532IY-T7 application, or EL7532IY-T7 equivalent, key selection criteria include its MSOP10 footprint (0.18 in² total converter area), internally compensated voltage-mode control, 94% peak efficiency at 2A, thermal shutdown at +145°C, and RSI-triggerable POR functionality.
Technical Context
The EL7532IY-T7 implements a fixed-frequency voltage-mode PWM controller with integrated high-side PMOS and low-side NMOS power FETs. Its internal compensation network eliminates external loop components, enabling stable operation with only two 10µF ceramic capacitors and a 1.8µH inductor.
It supports 100% duty-cycle operation for near-VIN output regulation, uses separate signal (SGND) and power (PGND) grounds to minimize noise coupling, and provides an RSI-controlled reset timer that forces POR low independently of output voltage transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous across –40°C to +85°C ambient - supports full-load operation in compact portable enclosures without forced airflow. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single Li-Ion (2.7–4.2V), 3.3V, and 5V rails without external pre-regulation. |
| Switching Frequency | 1.5MHz (typ.) - enables use of small 1.8µH inductors and 10µF ceramic capacitors, minimizing solution size. |
| Feedback Reference | 800mV ±10mV - sets output accuracy via external resistor divider; enables precise 0.8V–VIN adjustment with <0.5% load regulation. |
| Shutdown Current | <1µA - preserves battery life in always-on systems during deep sleep modes. |
| POR Delay | 100ms (typ.) - provides reliable system-level reset timing after output reaches regulation, independent of input ramp rate. |
| Thermal Shutdown | +145°C threshold with +15°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
EL7532IY-T7 is housed in a 10-pin MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm profile, RoHS-compliant with matte tin e3 terminations. Designed for surface-mount assembly on single-sided PCBs with minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SGND | Signal Ground Reference | Return path for controller-stage analog circuitry; must be isolated from PGND except at single-point connection near IC. |
| 2 PGND | Power Ground Return | High-current return for LX switch node and output capacitor; requires large copper pour and multiple vias for thermal relief. |
| 3 LX | Switch Node Output | Drives external inductor; carries high di/dt ripple current - trace must be short and wide to minimize EMI and voltage spikes. |
| 4 VIN | Main Power Input | Supplies power stage (PMOS/NMOS); requires local 10µF ceramic decoupling placed adjacent to PIN 4 and PIN 2. |
| 5 VDD | Controller Supply | Bias supply for internal logic and reference; derived from VIN but regulated internally - no external filtering needed. |
| 6 RSI | Reset Input | Active-HI asynchronous trigger for POR; pulling low forces immediate POR assertion and 100ms hold time upon release. |
| 7 EN | Enable Control | Logic-enable input; tied to VIN for automatic startup at ~2.4V; draws <1µA when low to enter ultra-low-power shutdown. |
| 8 POR | Open-Drain Reset Output | Asserts low for 100ms after VO reaches target; requires external pull-up (e.g., 100kΩ) to generate system reset signal. |
| 9 VO | Output Voltage Sense | Direct connection to output rail; used with FB to monitor actual output - improves regulation under layout parasitics. |
| 10 FB | Feedback Input | Connects to resistor divider (R1/R2) between VO and SGND; 800mV reference sets output as VO = 0.8V × (1 + R2/R1). |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Controller | Eliminates need for external compensation network - reduces BOM count and layout sensitivity while ensuring stability with standard 10–22µF ceramic caps. |
| Synchronous Dual-FET Integration | Combines 52mΩ PMOS and 35mΩ NMOS switches in one die - achieves >94% efficiency at 2A and enables 100% duty-cycle operation for VIN-to-VO tracking. |
| Separate SGND/PGND Pins | Prevents switching noise from corrupting feedback and reference circuits - critical for maintaining <1% output accuracy under dynamic load. |
| RSI-Controlled POR | Allows deterministic system reset initiation independent of power-rail sequencing - supports hot-swap and firmware-triggered reboots. |
| Ultra-Low Shutdown Current | <1µA total supply current in shutdown - extends battery runtime in standby by orders of magnitude versus discrete solutions. |
Applications
| PDA & Pocket PC Power | Li-Ion–Powered Instruments |
|---|---|
|
Use Scenario: Compact handheld devices requiring dual-rail core/I/O supplies from a single-cell Li-Ion battery. IC Role / Device Role / Timing Role: Primary 2A core voltage regulator delivering 1.2V/1.8V to ARM processors and memory interfaces. Use Value: Enables full 2A load capability within 0.18 in² PCB area using only three passive components - critical for thin form factors. |
Use Scenario: Portable test equipment (e.g., DMMs, oscilloscope probes) needing clean, stable analog and digital supplies. IC Role / Device Role / Timing Role: Low-noise, thermally robust DC/DC converter powering precision ADCs, DACs, and microcontrollers. Use Value: Separate SGND/PGND routing and internal compensation maintain <0.5% load regulation - preserving measurement accuracy. |
| FPGA Core Supply | ADSL Modem DSP Rail |
|
Use Scenario: Configurable logic platforms requiring tightly regulated, fast-transient 1.0–1.2V core voltage with soft-start sequencing. IC Role / Device Role / Timing Role: Synchronous buck regulator with 650µs soft-start and 100ms POR - ensures safe configuration before FPGA logic activation. Use Value: 1.5MHz switching minimizes output ripple and allows ceramic-only filtering - avoids electrolytic capacitor aging issues. |
Use Scenario: Broadband access equipment operating continuously in unventilated enclosures with ambient up to +70°C. IC Role / Device Role / Timing Role: Main 3.3V/2.5V supply for DSL PHY and baseband processors with thermal shutdown at +145°C junction. Use Value: Fused-lead MSOP10 package achieves θJA ≈ 100°C/W on 4-layer boards - sustains 2A output without derating in sealed housings. |
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 0.6A output rating; 3MHz switching; different pinout (8-pin SOIC); no RSI or POR functions. | Targeted at low-power MCU and sensor nodes - insufficient for 2A FPGA/DSP loads. | Select ISL8002 only for space-constrained sub-1A applications where POR and reset control are unnecessary. |
| ISL8002A | Same 0.6A rating as ISL8002; adds internal soft-start and improved light-load efficiency; still lacks POR/RSI and 2A capability. | Optimized for battery-powered IoT endpoints with burst-mode operation - not suitable for continuous 2A loads. | Choose ISL8002A when ultra-low quiescent current (<30µA) is prioritized over output current and system reset integration. |
Compared with EL7532IY-T7, both ISL8002 and ISL8002A offer higher switching frequencies but sacrifice 3.3× output current, POR functionality, and RSI-triggered reset - making them unsuitable replacements in 2A portable or FPGA power applications.
Availability
EL7532IY-T7 is available at Aetrix Electronics and suitable for PDA power management, Li-Ion–powered instrumentation, FPGA core supplies, ADSL modem DSP rails, and ASIC voltage regulation requiring stable component supply across industrial temperature ranges.
Supply support for EL7532IY-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 is a leading provider of power management and precision analog ICs, now part of Renesas Electronics, with expertise in high-efficiency DC/DC conversion and thermal-aware design.
The EL7532IY-T7 belongs to Intersil's monolithic synchronous buck regulator product line, engineered specifically for space-constrained, battery-operated portable electronics demanding high current density and integrated system-level functions like POR.
FAQ
What is the maximum output current capability of the EL7532IY-T7 across temperature?
The EL7532IY-T7 delivers 2A continuous output current over the full –40°C to +85°C ambient temperature range, verified per datasheet absolute maximum ratings and thermal performance curves. Its fused-lead MSOP10 package and internal thermal shutdown at +145°C ensure sustained 2A operation without derating in typical PCB layouts with adequate copper area.
Does the EL7532IY-T7 require external compensation components?
No, the EL7532IY-T7 features an internally compensated voltage-mode PWM controller. This eliminates the need for external compensation networks, allowing stable operation with only two 10µF ceramic capacitors and a 1.8µH inductor - significantly reducing bill-of-materials count and layout complexity compared to externally compensated regulators.
How does the RSI pin function on the EL7532IY-T7?
The RSI pin on the EL7532IY-T7 is an active-HI asynchronous input that forces the POR output low immediately upon assertion and holds it for 100ms after RSI returns low. This enables firmware-controlled or external-event–triggered system resets without affecting the main output voltage, making EL7532IY-T7 suitable for hot-swap and recovery-critical applications.
What is the purpose of having separate SGND and PGND pins on the EL7532IY-T7?
Separate SGND (signal ground) and PGND (power ground) pins on the EL7532IY-T7 isolate noise-sensitive analog circuitry (error amplifier, reference, POR logic) from high-di/dt power-switching currents. This separation maintains feedback accuracy and prevents switching transients from inducing output voltage errors - essential for achieving <0.5% load regulation in precision applications.
Can the EL7532IY-T7 operate with input voltage equal to the desired output voltage?
Yes, the EL7532IY-T7 supports 100% duty-cycle operation due to its PMOS high-side switch architecture, enabling VO to approach VIN minus IR drops (e.g., VO ≈ VIN – IO × [rDS(ON)_PMOS + RL]). This allows regulation down to input voltages just above the set output, critical for single-cell Li-Ion systems where VIN may dip below 3.0V during discharge.
EL7532IY-T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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):
- 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-T7 FAQ
1.How can I place an order for EL7532IY-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7532IY-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 EL7532IY-T7 reliable?
The price and inventory of EL7532IY-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7532IY-T7 is usually 5 days.
3.What payment methods are accepted for EL7532IY-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7532IY-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7532IY-T7?
EL7532IY-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7532IY-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 EL7532IY-T7?
For technical support, including EL7532IY-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7532IY-T7 requirements.
6.How does Aetrix verify that EL7532IY-T7 is sourced from the original manufacturer or authorized distributors?
All EL7532IY-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 EL7532IY-T7 meets industry standards.
7.What is the process for return or replacement of EL7532IY-T7?
All EL7532IY-T7 units undergo pre-shipment inspection (PSI). If there is an issue with EL7532IY-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 EL7532IY-T7 part is unused and in its original packaging.
Return procedure for EL7532IY-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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