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Renesas EL7532IYZ
- Part No.:
- EL7532IYZ
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7532IYZ.pdf
- Description:
- IC REG BUCK ADJ 2A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,761
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Product details
Overview
EL7532IYZ 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 EL7532IYZ datasheet, EL7532IYZ pinout, EL7532IYZ application, or EL7532IYZ equivalent, key selection considerations include its MSOP10 footprint (0.18 in² total converter area), internally compensated voltage-mode control, 94% peak efficiency at 2A, thermal shutdown threshold at +145°C, and RSI-triggered POR reset functionality.
Technical Context
The EL7532IYZ 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-VIN output. Its internal compensation eliminates external loop components, requiring only two 10–22µF ceramic capacitors and a 1.5–2.2µH inductor.
It separates signal ground (SGND) and power ground (PGND) to minimize noise coupling, uses dedicated EN and RSI pins for enable and asynchronous reset, and delivers a 100ms POR pulse after output regulation is achieved - independent of input ramp rate or load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous over –40°C to +85°C ambient; supports full-load operation without derating in compact layouts. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single Li-ion (2.7–4.2V), 3.3V, and 5V rails without external regulators. |
| Switching Frequency | 1.5MHz typical; enables use of small 1.8µH inductors and low-ESR ceramic capacitors for minimal board area. |
| Feedback Voltage | 800mV ±10mV; sets output via resistor divider (VO = 0.8V × (1 + R2/R1)), supporting precise 1.2V/1.8V/2.5V/3.3V generation. |
| Shutdown Current | <1µA at EN = LOW; preserves battery life in always-on portable systems during deep sleep modes. |
| POR Delay | 100ms nominal after VO reaches regulation; provides reliable system reset timing for microcontrollers and FPGAs. |
| Thermal Shutdown | Activates at +145°C junction temperature with +15°C hysteresis; prevents damage during sustained overload or poor heatsinking. |
Pinout & Package
EL7532IYZ is housed in a Pb-free, RoHS-compliant 10-pin MSOP package (MDP0043), measuring 3.0mm × 4.9mm × 1.1mm max height. The fused-lead construction achieves θJA = 115°C/W on standard PCBs, improving thermal performance over standard MSOP.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SGND) | Signal Ground Reference | Return path for feedback, enable, and POR circuitry; must be isolated from PGND except at single-point connection. |
| 2 (PGND) | Power Ground Return | High-current return for LX and VIN; requires large copper pour and multiple vias for thermal and EMI control. |
| 3 (LX) | Switch Node Output | Drives external inductor; carries high di/dt square wave; must be routed short and wide to minimize ringing. |
| 4 (VIN) | Main Power Input | Supplies NMOS/PMOS power stage; requires local 10–22µF ceramic capacitor placed adjacent to PIN 4 and PIN 2. |
| 5 (VDD) | Controller Supply | Bias rail for internal logic and gate drivers; decoupled by same input cap as VIN due to shared PGND path. |
| 6 (RSI) | Reset Input | Active-HI asynchronous trigger for immediate POR restart; connect to GND if unused to prevent floating. |
| 7 (EN) | Enable Control | Logic-HI (>2.4V) enables regulation; logic-LOW (<0.8V) disables with sub-1µA quiescent draw. |
| 8 (POR) | Open-Drain Reset Output | Sinks 5mA; requires external pull-up (e.g., 100kΩ to VO); asserts low for 100ms after output regulation. |
| 9 (VO) | Output Voltage Sense | Direct connection to regulated output node; used with FB to close feedback loop for remote sensing. |
| 10 (FB) | Voltage Feedback Input | Monitors resistive divider; 800mV reference enables accurate output setting across temperature and load. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | Eliminates need for external MOSFETs and bootstrap circuitry; reduces BOM count and layout complexity. |
| Internal Compensation | Removes requirement for external compensation network; ensures stable operation with recommended 10–22µF ceramic caps. |
| 100% Duty-Cycle Capability | Enables VO up to VIN − IO×(RDS(ON) + RL); critical for low-dropout operation in battery-powered systems. |
| Separate SGND/PGND Pins | Minimizes ground bounce and improves PSRR; essential for noise-sensitive analog or mixed-signal loads. |
| 100ms POR with RSI Trigger | Provides deterministic system reset timing and allows software-initiated reinitialization without cycling VIN. |
Applications
| Portable Instrument Power | FPGA Core Supply |
|---|---|
Use Scenario: Handheld multimeters and portable oscilloscopes powered by single Li-ion cells. IC Role / Device Role / Timing Role: Primary 2A step-down regulator generating 1.2V/1.8V core voltages from 2.7–4.2V battery input. Use Value: Delivers 94% efficiency at 2A load while occupying <0.18 in² PCB area - enabling ultra-compact form factors. |
Use Scenario: Core voltage supply for Xilinx Spartan-6 or Intel Cyclone IV FPGAs in embedded controllers. IC Role / Device Role / Timing Role: Adjustable 1.2V output regulator with soft-start and POR to meet FPGA configuration sequencing requirements. Use Value: 100ms POR output satisfies FPGA power-good timing constraints; internal compensation simplifies layout validation. |
| Barcode Reader System | ADSL Modem DC/DC Stage |
Use Scenario: High-pulse-current laser diode driver and image sensor supply in handheld barcode scanners. IC Role / Device Role / Timing Role: Main 2A buck converter powering 3.3V logic and 5V analog sections from 5V USB input. Use Value: 1.5MHz switching minimizes output ripple during rapid laser activation; <1µA shutdown extends standby time. |
Use Scenario: Secondary 1.8V/2.5V supply for ADSL line interface ICs and DSPs in residential modems. IC Role / Device Role / Timing Role: Efficient, low-noise point-of-load regulator replacing discrete solutions in space-constrained modem PCBs. Use Value: MSOP10 package fits dense modem layouts; separate SGND/PGND pins suppress noise coupling into sensitive analog front-ends. |
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 | 2A synchronous buck, 2.7–5.5V input, 1.5MHz, but lacks POR output and RSI reset; uses external compensation. | No built-in power-on-reset function; requires additional supervisor IC or GPIO-driven reset logic for FPGA/microcontroller sequencing. | Choose ISL8002 only if POR is handled externally and layout allows space for compensation components. |
| ISL8002A | Pin-compatible upgrade to ISL8002 with improved load transient response and tighter VFB tolerance (±0.5%), but still no POR/RSI. | Same missing POR functionality as ISL8002; offers better regulation accuracy but no reset integration. | Select ISL8002A when higher output voltage precision is required and POR is implemented separately. |
Compared with EL7532IYZ, both ISL8002 and ISL8002A require external reset circuitry and compensation networks, increasing BOM count and design validation effort - whereas EL7532IYZ integrates POR, RSI, and compensation in a single MSOP10 package optimized for space- and feature-constrained portable designs.
Availability
EL7532IYZ is available at Aetrix Electronics and suitable for portable instrumentation, FPGA core supplies, and Li-ion–powered barcode readers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7532IYZ 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 robust industrial-grade solutions.
The EL7532IYZ belongs to Intersil's monolithic synchronous buck regulator product line, designed specifically for compact, high-current portable electronics where board area, thermal performance, and integrated system-level functions (e.g., POR) are critical.
FAQ
What is the maximum achievable output voltage of the EL7532IYZ?
The EL7532IYZ supports output voltages up to VIN minus losses from inductor DCR and PMOS RDS(ON), enabling near-100% duty-cycle operation. At room temperature, with typical 70mΩ PMOS resistance and low-DCR inductor, VO can reach within ~100mV of VIN. This capability is especially valuable in Li-ion applications where input drops to 2.7V and 2.5V outputs must be maintained without dropout.
Does the EL7532IYZ require external compensation components?
No, the EL7532IYZ features an internally compensated voltage-mode PWM controller. It operates stably with only two 10–22µF ceramic capacitors and a 1.5–2.2µH inductor - eliminating external compensation networks, reducing layout sensitivity, and accelerating design validation compared to externally compensated regulators like the ISL8002.
How does the RSI pin function on the EL7532IYZ?
The RSI (Reset Input) pin on the EL7532IYZ is an active-HI asynchronous input that forces the POR output low immediately upon assertion, then holds it low for 100ms after RSI returns low. This allows firmware-controlled system resets without cycling VIN. When unused, RSI must be tied to SGND to prevent noise-induced false triggers - it is not internally pulled down.
What thermal performance can be expected from the EL7532IYZ in a standard PCB layout?
In a standard 2-layer PCB, the EL7532IYZ achieves θJA ≈ 125°C/W; on a 4-layer board with enhanced ground copper, θJA improves to ~100°C/W. Its fused-lead MSOP10 package and dual ground pins (SGND/PGND) support efficient heat spreading. With 2A load and 5V input, junction temperature rise remains within safe limits when minimum recommended copper area is applied around PGND and thermal vias are used under the package.
Can the EL7532IYZ operate with input voltage below 2.5V?
No - the absolute minimum input voltage for functional operation is 2.5V per the Absolute Maximum Ratings table. Below this, the internal bandgap reference and gate drivers cannot sustain regulation. The device enters undervoltage lockout (UVLO) when VIN falls below ~2.2V (rising threshold) and will not start until VIN exceeds ~2.4V. Operation below 2.5V is not characterized or guaranteed.
EL7532IYZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
EL7532IYZ FAQ
1.How can I place an order for EL7532IYZ through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7532IYZ 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 EL7532IYZ reliable?
The price and inventory of EL7532IYZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7532IYZ is usually 5 days.
3.What payment methods are accepted for EL7532IYZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7532IYZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7532IYZ?
EL7532IYZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7532IYZ 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 EL7532IYZ?
For technical support, including EL7532IYZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7532IYZ requirements.
6.How does Aetrix verify that EL7532IYZ is sourced from the original manufacturer or authorized distributors?
All EL7532IYZ 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 EL7532IYZ meets industry standards.
7.What is the process for return or replacement of EL7532IYZ?
All EL7532IYZ units undergo pre-shipment inspection (PSI). If there is an issue with EL7532IYZ, 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 EL7532IYZ part is unused and in its original packaging.
Return procedure for EL7532IYZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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