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Renesas EL7534IY-T13
- Part No.:
- EL7534IY-T13
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7534IY-T13.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
EL7534IY-T13 from Intersil is a synchronous, integrated-FET 600mA 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 via external resistor divider. It features 1.5MHz PWM switching, <1µA shutdown current, 100ms open-drain POR output, and over-temperature/short-circuit protection. Used in Li-ion–powered portable electronics requiring compact, high-efficiency power conversion.
For engineers reviewing the EL7534IY-T13 datasheet, EL7534IY-T13 pinout, EL7534IY-T13 application, or EL7534IY-T13 equivalent, key selection criteria include its MSOP10 package footprint (<0.15 in²), internally compensated voltage-mode control, 94% peak efficiency at 600mA, thermal shutdown at 145°C, and POR timing compatibility with system reset sequencing.
Technical Context
The EL7534IY-T13 implements a fixed-frequency (1.5MHz typical) voltage-mode PWM controller with integrated PMOS/NMOS synchronous power switches (RDS(ON) = 70mΩ / 45mΩ at VDD = 5V). Its internal compensation eliminates need for 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-input-output voltage tracking, uses separate signal ground (SGND) and power ground (PGND) pins to minimize noise coupling, and integrates a dedicated RSI input to asynchronously reset the 100ms POR timer without affecting regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous; supports up to 800mA peak for transient loads without derating. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single-cell Li-ion (2.7–4.2V), 3.3V, and 5V rails. |
| Switching Frequency | 1.5MHz typical; enables use of small 1.8µH inductors and low-ESR ceramic capacitors. |
| Feedback Voltage | 800mV ±10mV; sets output via resistor divider (VO = 0.8V × (1 + R1/R2)). |
| Shutdown Current | <1µA; minimizes battery drain in standby mode for portable devices. |
| POR Delay | 100ms nominal; provides reliable system reset timing after output reaches regulation. |
| Thermal Shutdown | 145°C activation with 15°C hysteresis; prevents damage during sustained overload or poor PCB thermal design. |
Pinout & Package
EL7534IY-T13 is housed in a 10-lead MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm profile, RoHS-compliant with matte tin terminations. Thermal resistance θJA is 115°C/W on high-conductivity board, 206°C/W on low-conductivity board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SGND | Signal Ground Reference | Return path for control circuitry; must be isolated from PGND except at single-point connection near IC. |
| 2 PGND | Power Ground Return | High-current return for LX and VIN paths; requires large copper pour and multiple vias for thermal management. |
| 3 LX | Switch Node Output | Drives external inductor; carries high di/dt square wave; layout critical to EMI and efficiency. |
| 4 VIN | Main Power Input | Supplies power stage (PMOS/NMOS); requires local 10µF ceramic capacitor placed adjacent to pin. |
| 5 VDD | Controller Supply | Provides bias to internal logic and reference; decoupled separately from VIN to reduce noise coupling. |
| 6 RSI | Reset Input | Active-HI asynchronous trigger to restart POR timer; pulled low when unused. |
| 7 EN | Enable Control | Active-HI logic input; starts soft-start sequence when raised above 2.4V threshold. |
| 8 POR | Open-Drain Reset Output | Asserts low for 100ms after VO reaches regulation; requires external pull-up for Power-Good signaling. |
| 9 VO | Output Voltage Sense | Direct connection to regulated output node; used for remote sensing in high-accuracy applications. |
| 10 FB | Feedback Input | Connects to mid-point of external resistor divider; senses 0.8V reference to regulate VO. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | Eliminates external MOSFETs and boot capacitor; reduces BOM count and layout complexity. |
| Internal Compensation | Enables stable operation with minimal external components-only 2×10µF ceramics and 1×1.8µH inductor required. |
| 100ms POR with RSI Reset | Provides deterministic system-level reset timing; RSI allows in-system POR retriggering without cycling VIN. |
| 100% Duty-Cycle Capability | Permits VO to track VIN closely (e.g., 4.0V out from 4.2V Li-ion), extending battery runtime in dropout conditions. |
| Separate SGND/PGND Pins | Reduces ground bounce and improves PSRR by isolating sensitive analog references from high-current switching paths. |
Applications
| Portable Medical Devices | Barcode Scanners |
|---|---|
|
Use Scenario: Handheld glucose meters and pulse oximeters powered by single Li-ion cells requiring stable 1.8V/3.3V rails under variable load. IC Role / Device Role / Timing Role: Primary step-down regulator supplying microcontroller core voltage and sensor interface circuitry. Use Value: 94% efficiency at 600mA extends battery life; 100ms POR ensures clean MCU initialization after battery insertion or wake-up. |
Use Scenario: Battery-operated handheld scanners needing fast start-up and robust reset behavior during intermittent USB charging. IC Role / Device Role / Timing Role: Main power converter for imaging sensor, laser driver, and decode processor. Use Value: RSI pin allows host MCU to force POR reassertion during firmware updates; <1µA shutdown current preserves charge during idle periods. |
| SFP Transceiver Modules | Industrial Handheld Terminals |
|
Use Scenario: Small-form-factor pluggable optical modules with strict size constraints and thermal limits in telecom equipment. IC Role / Device Role / Timing Role: Compact 3.3V-to-2.5V or 1.8V point-of-load regulator for laser diode bias and DSP cores. Use Value: MSOP10 footprint occupies <0.15 in²; 1.5MHz switching avoids interference with 10Gbps data lanes. |
Use Scenario: Ruggedized warehouse terminals using Li-ion packs and requiring reliable operation across -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Main system regulator powering ARM Cortex-M7 MCU, display driver, and RFID reader. Use Value: Over-temperature protection at 145°C prevents field failures in sealed enclosures; wide input range accommodates aging battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYT | 3MHz switching frequency, 300mA output, different feedback voltage (0.6V), no POR or RSI. | Lacks integrated reset functionality; suited for space-constrained apps where higher frequency enables smaller passives but lower current suffices. | Select if 300mA output and 3MHz operation are acceptable, and POR is handled externally. |
| MAX17503GCU+T | 4.5–60V input, 600mA output, external compensation, no integrated POR, larger 16-pin TQFN package. | Designed for industrial/high-voltage inputs; requires full compensation network and external reset IC for POR. | Choose when input exceeds 5.5V or when design requires adjustable compensation for custom ESR/inductor selection. |
Compared with TPS62231DRYT and MAX17503GCU+T, EL7534IY-T13 uniquely combines 600mA capability, integrated 100ms POR with RSI reset, and MSOP10 footprint - making it optimal for compact, battery-powered systems needing self-contained reset timing and minimal external components.
Availability
EL7534IY-T13 is available at Aetrix Electronics and suitable for portable medical devices, barcode scanners, SFP modules, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7534IY-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 (now part of Renesas Electronics) is a U.S.-based analog and power management semiconductor company founded in 1967, specializing in high-performance power conversion, precision analog, and interface solutions.
The EL7534 belongs to Intersil's monolithic DC/DC regulator product line, designed specifically for space-constrained, battery-powered portable electronics demanding high efficiency, low quiescent current, and integrated system-level functions like POR.
FAQ
What is the maximum output current supported by the EL7534IY-T13?
The EL7534IY-T13 delivers 600mA continuously under standard thermal conditions (θJA ≤ 125°C/W). Its peak current limit is 1.5A, allowing brief surge handling. Derating is required above +85°C ambient or with inadequate PCB copper; full 600mA output assumes proper thermal layout per datasheet guidelines.
Does the EL7534IY-T13 require external compensation components?
No, the EL7534IY-T13 features an internally compensated voltage-mode controller. This eliminates the need for external compensation networks, enabling stable operation with only two 10µF ceramic capacitors and a 1.8µH inductor - significantly simplifying design and reducing bill-of-materials cost.
How does the RSI pin function on the EL7534IY-T13?
The RSI pin on the EL7534IY-T13 is an active-HI asynchronous input that immediately resets the internal POR timer. When asserted, POR goes low and remains low for 100ms after RSI returns low. The output voltage VO is unaffected during this event, enabling safe in-system reset retriggering without disrupting regulation.
What package type and dimensions does the EL7534IY-T13 use?
The EL7534IY-T13 uses a 10-lead MSOP package (MDP0043) measuring 3.0mm × 4.9mm × 1.1mm. It features fused leads for improved thermal performance (θJA = 115°C/W on 4-layer board) and matte tin RoHS-compliant terminations compatible with both SnPb and Pb-free soldering processes.
Can the EL7534IY-T13 operate with input voltage equal to the desired output voltage?
Yes, the EL7534IY-T13 supports 100% duty-cycle operation due to its PMOS high-side switch architecture. When VIN approaches VO, the upper FET remains fully on, allowing VO to track VIN minus small drops across RDS(ON) and inductor DCR - enabling efficient operation near dropout in Li-ion applications.
EL7534IY-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:
- 600mA
- 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
EL7534IY-T13 FAQ
1.How can I place an order for EL7534IY-T13 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7534IY-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 EL7534IY-T13 reliable?
The price and inventory of EL7534IY-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7534IY-T13 is usually 5 days.
3.What payment methods are accepted for EL7534IY-T13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7534IY-T13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7534IY-T13?
EL7534IY-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7534IY-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 EL7534IY-T13?
For technical support, including EL7534IY-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7534IY-T13 requirements.
6.How does Aetrix verify that EL7534IY-T13 is sourced from the original manufacturer or authorized distributors?
All EL7534IY-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 EL7534IY-T13 meets industry standards.
7.What is the process for return or replacement of EL7534IY-T13?
All EL7534IY-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7534IY-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 EL7534IY-T13 part is unused and in its original packaging.
Return procedure for EL7534IY-T13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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