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Renesas EL7532IY-T13
- Part No.:
- EL7532IY-T13
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7532IY-T13.pdf
- Description:
- IC REG BUCK ADJ 2A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,263
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Product details
Overview
EL7532IY-T13 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 supporting adjustable output from 0.8V to VIN. It delivers up to 94% efficiency at 2A continuous load across –40°C to +85°C, features 1.5MHz switching frequency, 100ms POR output, and <1µA shutdown current-used in Li-ion–powered portable instruments and FPGA/ASIC core supplies.
For engineers reviewing the EL7532IY-T13 datasheet, EL7532IY-T13 pinout, EL7532IY-T13 application, or EL7532IY-T13 equivalent, key selection criteria include its MSOP10 footprint (0.18 in² total converter area), internally compensated voltage-mode control, dual ground separation (PGND/SGND), and thermal shutdown threshold at 145°C.
Technical Context
The EL7532IY-T13 implements a fixed-frequency voltage-mode PWM controller with internal compensation, eliminating external loop components. Its synchronous PMOS/NMOS power stage enables 100% duty-cycle operation for near-VIN outputs and eliminates boot capacitor requirements.
It integrates a 100ms open-drain POR output triggered by FB voltage crossing 95% of target, resettable via RSI pin. Thermal protection shuts down both FETs at ~145°C junction temperature and auto-restarts at ~130°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous over full –40°C to +85°C ambient; supports stable core supply for FPGA/DSP under thermal stress |
| Input Voltage Range | 2.5V to 5.5V; compatible with single Li-ion (2.7–4.2V), 3.3V, or 5V rails without external LDO pre-regulation |
| Switching Frequency | 1.5MHz typical; enables compact 1.8µH inductor and ceramic capacitors, reducing solution size vs lower-frequency regulators |
| Feedback Voltage | 800mV ±10mV; sets precise output via resistor divider, enabling 0.8V–VIN adjustment with <0.5% load regulation error |
| Shutdown Current | <1µA; preserves battery life in always-on portable devices during deep sleep modes |
| POR Delay | 100ms nominal; provides reliable system reset timing after output stabilization, synchronized to VOUT reaching 95% of target |
| Efficiency | Up to 94% at 1.8V/2A from 5V input; minimizes thermal dissipation in space-constrained handheld enclosures |
Pinout & Package
The EL7532IY-T13 is housed in a 10-pin MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm max height, with fused-lead construction for improved thermal resistance (θJA = 115°C/W typical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SGND | Signal Ground | Reference return for controller circuitry; must be separated from PGND and joined at single point near IC |
| 2 PGND | Power Ground | High-current return path for LX switch node and input/output capacitors; requires large copper pour and vias |
| 3 LX | Switch Node | Drives external inductor; carries high di/dt; routing must minimize loop area to reduce EMI and voltage spikes |
| 4 VIN | Power Stage Input | Supplies NMOS/PMOS switches; connects directly to input capacitor placed adjacent to PIN 4 and PIN 2 |
| 5 VDD | Controller Supply | Bias rail for internal logic and reference; decoupled separately from VIN to avoid noise coupling |
| 6 RSI | Reset Input | Active-HI signal that forces immediate POR low pulse; tie to GND if unused |
| 7 EN | Enable Input | Logic-level enable; connects directly to VIN for automatic startup above 2.4V threshold |
| 8 POR | Power-On Reset Output | Open-drain output; requires external pull-up (e.g., 100kΩ) to generate 100ms delayed Power-Good signal |
| 9 VO | Output Sense | Direct connection to regulated output; used for remote sensing in high-current layouts |
| 10 FB | Feedback Input | Monitors resistive divider output; 800mV reference enables precise output setting and tight line/load regulation |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Control | Eliminates external compensation network; ensures stability with 10–22µF ceramic input/output caps and 1.5–2.2µH inductor |
| Synchronous PMOS/NMOS FETs | Enables 100% duty cycle for VO ≈ VIN; removes boot capacitor requirement and improves light-load efficiency |
| Dual Ground Architecture | Separate SGND (controller) and PGND (power stage) reduces noise coupling and improves PSRR in sensitive analog subsystems |
| Thermal Shutdown with Hysteresis | Shuts down at 145°C junction and restarts at 130°C; prevents thermal runaway while allowing safe recovery without system intervention |
| 100ms POR with RSI Reset | Provides deterministic system reset timing; RSI allows on-demand retriggering without disrupting output voltage |
Applications
| Portable Instrument Power | FPGA Core Supply |
|---|---|
Use Scenario: Handheld multimeters and portable oscilloscopes powered by single Li-ion cells requiring clean, regulated 1.2V/1.8V rails. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 2A continuous current with low-noise output and fast transient response. Use Value: Enables compact PCB layout (<0.18 in² total converter area) and extends battery runtime via 94% peak efficiency and <1µA shutdown current. | Use Scenario: Core voltage supply for Xilinx Spartan-7 or Intel MAX 10 FPGAs in edge-sensing modules with tight thermal envelopes. IC Role / Device Role / Timing Role: Adjustable-output DC/DC converter set to 1.0V or 1.2V with precise 800mV feedback reference and <0.5% load regulation. Use Value: Internal compensation and MSOP10 package simplify design-in and ensure stable operation across –40°C to +85°C industrial temperature range. |
| Barcode Reader System Rail | ADSL Modem DSP Supply |
Use Scenario: High-pulse-current laser driver and image sensor subsystem in ruggedized barcode scanners. IC Role / Device Role / Timing Role: High-efficiency 2A buck regulator supporting dynamic load steps up to 2A with minimal output droop. Use Value: 1.5MHz switching frequency and optimized LC filter design limit output ripple to <20mVpp, ensuring clean sensor biasing. | Use Scenario: Low-noise 3.3V supply for TI TMS320C64x+ DSPs in residential ADSL modems with strict EMI limits. IC Role / Device Role / Timing Role: Main DC/DC converter with separate PGND/SGND planes and POR sequencing for deterministic boot. Use Value: 100ms POR output synchronizes DSP initialization, while internal compensation avoids layout-sensitive external poles/zeros. |
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 | Non-synchronous rectification; 1.5MHz fixed frequency; 2A rating; no integrated POR or RSI function | Lacks built-in 100ms POR and RSI reset; requires external reset IC for sequencing-critical systems | Choose ISL8002 only if POR functionality is unnecessary and cost sensitivity outweighs board-area savings from integrated features |
| ISL8002A | Enhanced version with improved thermal performance and tighter FB tolerance (±0.5%); same pinout as ISL8002 but not pin-compatible with EL7532IY-T13 | No POR or RSI pins; different pin assignment and ground architecture (single GND) | Select ISL8002A when higher output accuracy and thermal robustness are prioritized over integrated reset and dual-ground isolation |
Compared with EL7532IY-T13, ISL8002 and ISL8002A offer similar 2A/1.5MHz buck capability but omit the integrated POR, RSI, and dual-ground architecture-requiring additional components and layout effort to replicate sequencing and noise isolation functions.
Availability
EL7532IY-T13 is available at Aetrix Electronics and suitable for portable instrumentation, FPGA core supplies, and DSL modem power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7532IY-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 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-T13 belongs to Intersil's monolithic synchronous buck regulator product line, engineered for space-constrained, battery-powered applications demanding high efficiency, small footprint, and integrated system-level functions like POR.
FAQ
What is the maximum achievable output voltage of the EL7532IY-T13?
The EL7532IY-T13 supports output voltages up to nearly VIN due to its 100% duty-cycle capability enabled by the PMOS upper switch. The theoretical maximum is VO = VIN − IO × (rDS(ON)1 + RL), where rDS(ON)1 ≈ 70mΩ at room temperature and RL is inductor DCR. At 2A load and 5V input, VO can reach ~4.85V with appropriate component selection and thermal management.
Does the EL7532IY-T13 require external compensation components?
No, the EL7532IY-T13 features an internally compensated voltage-mode controller, eliminating the need for external compensation networks. Stability is ensured using recommended 10–22µF ceramic input/output capacitors and a 1.5–2.2µH inductor-reducing BOM count and layout sensitivity while maintaining phase margin across operating conditions.
How does the RSI pin function in the EL7532IY-T13?
The RSI pin on the EL7532IY-T13 is an active-HI reset input that forces the POR output low immediately upon assertion, then holds it low for 100ms after RSI returns low. This allows on-demand system reset without interrupting the regulated output voltage. If unused, RSI must be tied to ground; leaving it floating may cause erratic POR behavior.
What thermal protection mechanism does the EL7532IY-T13 implement?
The EL7532IY-T13 incorporates over-temperature protection that disables both internal MOSFETs when junction temperature reaches ~145°C. After shutdown, the device cools passively and automatically restarts once the junction falls to ~130°C, providing hysteresis to prevent thermal oscillation. This protects against sustained overload or inadequate heatsinking in sealed portable enclosures.
Can the EL7532IY-T13 operate from a single Li-ion battery?
Yes, the EL7532IY-T13 operates across 2.5V to 5.5V input, fully covering the discharge profile of a single Li-ion cell (2.7V–4.2V). Its 2.2V startup threshold and <1µA shutdown current make it ideal for battery-powered devices requiring long shelf life and reliable operation down to end-of-discharge voltage.
EL7532IY-T13 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-T13 FAQ
1.How can I place an order for EL7532IY-T13 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7532IY-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 EL7532IY-T13 reliable?
The price and inventory of EL7532IY-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7532IY-T13 is usually 5 days.
3.What payment methods are accepted for EL7532IY-T13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7532IY-T13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7532IY-T13?
EL7532IY-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7532IY-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 EL7532IY-T13?
For technical support, including EL7532IY-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7532IY-T13 requirements.
6.How does Aetrix verify that EL7532IY-T13 is sourced from the original manufacturer or authorized distributors?
All EL7532IY-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 EL7532IY-T13 meets industry standards.
7.What is the process for return or replacement of EL7532IY-T13?
All EL7532IY-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7532IY-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 EL7532IY-T13 part is unused and in its original packaging.
Return procedure for EL7532IY-T13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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