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Renesas EL7534IYZ-T7
- Part No.:
- EL7534IYZ-T7
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7534IYZ-T7.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,345
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Product details
Overview
EL7534IYZ-T7 from Intersil is a synchronous, integrated-FET 600mA step-down DC/DC regulator in a Pb-free MSOP-10 package. It operates from 2.5V to 5.5V input, delivers adjustable output (0.8V to VIN) via external resistor divider, and features 1.5MHz PWM switching, <1µA shutdown current, and 100ms open-drain POR output - used in Li-ion–powered portable instrumentation and SFP modules.
For engineers reviewing the EL7534IYZ-T7 datasheet, EL7534IYZ-T7 pinout, EL7534IYZ-T7 application, or EL7534IYZ-T7 equivalent, key selection criteria include internal compensation eliminating loop tuning, dual ground separation (PGND/SGND), thermal shutdown at 145°C with 15°C hysteresis, and guaranteed 94% peak efficiency at 600mA load.
Technical Context
The EL7534IYZ-T7 implements a voltage-mode PWM controller with fixed internal compensation, enabling stable operation using only two 10µF ceramic capacitors and a 1.8µH inductor. Its synchronous PMOS/NMOS power stage eliminates boot capacitor requirements and supports 100% duty-cycle operation near VIN.
It integrates dedicated signal (SGND) and power (PGND) grounds, a 100ms POR with RSI-triggered reset, and overcurrent protection set at 1.5A. Thermal shutdown activates at 145°C with automatic recovery at 130°C, and EN pin enables logic-controlled startup with soft-start timing of 650µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous; supports transient surges up to 1.5A before current limiting engages |
| Input Voltage Range | 2.5V to 5.5V - compatible with single Li-ion (2.7–4.2V), 3.3V, and 5V rails without level-shifting |
| Switching Frequency | 1.5MHz typical - enables compact LC filtering with ≤2.2µH inductors and 10–22µF X5R/X7R ceramics |
| Feedback Voltage | 800mV ±10mV - sets output via resistor divider; enables precise 0.8V–VIN adjustment with minimal error |
| Shutdown Current | <1µA - preserves battery life in standby; achieved by disabling both MOSFETs and control logic |
| Thermal Protection | Shuts down at 145°C junction; resumes at 130°C - prevents damage during sustained overload or poor PCB heat sinking |
| POR Delay | 100ms nominal - provides deterministic system reset timing after output regulation is established |
Pinout & Package
EL7534IYZ-T7 is housed in a RoHS-compliant, Pb-free MSOP-10 package (MDP0043), 3.0mm × 4.9mm × 1.1mm max height, with fused leads for improved thermal performance (θJA = 115°C/W on high-conductivity board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SGND | Signal Ground Reference | Return path for controller 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; requires large copper pour and multiple vias for thermal and EMI control |
| 3 LX | Switch Node | Drives external inductor; carries high di/dt square wave - demands shortest possible trace to minimize ringing |
| 4 VIN | Main Power Input | Supplies power stage (PMOS/NMOS); requires low-ESR ceramic capacitor placed adjacent to PIN 4 and PIN 2 |
| 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 for POR; pulls POR low immediately and restarts 100ms timer upon falling edge |
| 7 EN | Enable Control | Active-HI logic input; initiates soft-start sequence when pulled high; draws <1µA in shutdown |
| 8 POR | Open-Drain Reset Output | Asserts low for 100ms after VO reaches regulation; serves as Power-Good signal when pulled up externally |
| 9 VO | Output Voltage Sense | Direct connection to regulated output node; used for remote sensing if layout permits |
| 10 FB | Feedback Input | Connects to resistor divider midpoint; 800mV reference sets VO = 0.8V × (1 + R1/R2) |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated controller | Eliminates need for external compensation network - reduces BOM count and layout sensitivity |
| Synchronous PMOS/NMOS FETs | Enables 100% duty cycle operation and removes boot capacitor requirement - simplifies design near VIN output |
| Dual ground separation (SGND/PGND) | Minimizes noise coupling between power switching and feedback paths - improves regulation accuracy and stability |
| 100ms POR with RSI trigger | Provides deterministic system-level reset timing and allows manual reset injection without affecting VO regulation |
| Thermal shutdown with hysteresis | Prevents thermal runaway during overload while avoiding oscillation near trip point - ensures safe auto-recovery |
Applications
| Portable Test Equipment | Bar Code Readers |
|---|---|
Use Scenario: Battery-powered handheld multimeters and signal generators requiring clean, stable 1.8V/3.3V rails under variable load. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 600mA with fast transient response and low-noise output. Use Value: Internal compensation and 1.5MHz switching enable compact, single-sided PCB layout with no external compensation parts. |
Use Scenario: Compact laser-based scanning engines needing regulated 3.3V for CMOS image sensors and microcontrollers. IC Role / Device Role / Timing Role: Efficient local DC/DC converter replacing linear regulators to extend Li-ion battery runtime. Use Value: <1µA shutdown current and 94% peak efficiency directly increase operational time per charge cycle. |
| Small Form Factor (SFP) Modules | Cellular Phones |
Use Scenario: Pluggable optical transceivers with strict size constraints and thermal limits in telecom infrastructure. IC Role / Device Role / Timing Role: Space-constrained 3.3V supply for laser driver ICs and serializer/deserializer circuits. Use Value: MSOP-10 footprint (<0.97 cm²) and 1.1mm max height meet SFP mechanical envelope requirements. |
Use Scenario: Subsystem power management in feature phones and early smartphones using Li-ion batteries. IC Role / Device Role / Timing Role: Core voltage regulator for baseband processors and RF front-end ICs. Use Value: Dual ground architecture and POR output support reliable power sequencing and brown-out detection in multi-rail systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3MHz switching frequency; 300mA output; different pinout; requires external compensation | Limited to lower current loads; higher frequency allows smaller inductors but increases EMI sensitivity | Choose for ultra-compact designs where 300mA suffices and higher-frequency operation is acceptable |
| RT8059GJ6 | 2.5V–5.5V input; 600mA; 1.5MHz; MSOP-8 package; no POR or RSI functionality | Lacks power-on-reset and reset-injection capability; single-ground design increases noise susceptibility | Choose when POR/RSI are unnecessary and board space allows trade-off of ground separation for smaller package |
Compared with TPS62231DRVR and RT8059GJ6, EL7534IYZ-T7 uniquely combines 600mA capability, integrated POR/RSI, dual-ground isolation, and internal compensation - making it optimal for space-constrained, battery-powered systems requiring robust power sequencing and minimal external components.
Availability
EL7534IYZ-T7 is available at Aetrix Electronics and suitable for portable test equipment, bar code readers, and SFP modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7534IYZ-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, now part of Renesas Electronics, designs high-performance analog and power management ICs for industrial, communications, and consumer applications.
The EL7534 product line targets space- and efficiency-critical portable electronics, delivering fully integrated, internally compensated step-down regulation with built-in protection and sequencing features.
FAQ
What is the maximum output current supported by the EL7534IYZ-T7?
The EL7534IYZ-T7 delivers up to 600mA continuously under specified thermal conditions. Its current limit is set at 1.5A, providing short-circuit protection. Actual achievable output current depends on PCB layout, ambient temperature, and thermal management - derating is required above 85°C ambient or with limited copper area. The EL7534IYZ-T7 datasheet specifies 600mA as the rated continuous output.
Does the EL7534IYZ-T7 require external compensation components?
No, the EL7534IYZ-T7 features an internally compensated voltage-mode PWM controller. This eliminates the need for external compensation networks, reducing component count and layout complexity. The internal compensation is optimized for use with 10–22µF ceramic input/output capacitors and 1.5–2.2µH inductors - confirmed in the EL7534IYZ-T7 datasheet Applications Information section.
How does the POR function operate on the EL7534IYZ-T7?
The EL7534IYZ-T7 provides a 100ms open-drain POR output that asserts low after VO reaches regulation and remains low for a nominal 100ms delay. An active-HI pulse on the RSI pin resets the timer and forces POR low immediately. The EL7534IYZ-T7 POR output requires an external pull-up resistor to function as a Power-Good signal - details are shown in Figure 14 and Applications Information.
What is the purpose of separate SGND and PGND pins on the EL7534IYZ-T7?
The EL7534IYZ-T7 separates signal ground (SGND, Pin 1) and power ground (PGND, Pin 2) to isolate noise-sensitive control circuitry from high-di/dt power switching currents. This separation improves regulation accuracy and loop stability. The EL7534IYZ-T7 datasheet mandates connecting SGND and PGND at a single point near the IC - critical for achieving specified performance.
Is the EL7534IYZ-T7 compatible with Li-ion battery input sources?
Yes, the EL7534IYZ-T7 operates across 2.5V to 5.5V input - fully covering the discharge range of a single Li-ion cell (2.7V–4.2V). Its 1.5MHz switching frequency, internal compensation, and <1µA shutdown current make it especially suitable for Li-ion–powered devices like portable test gear and barcode scanners. The EL7534IYZ-T7 datasheet explicitly lists "Li-Ion battery powered devices" in Applications.
EL7534IYZ-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:
- 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:
- 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
EL7534IYZ-T7 FAQ
1.How can I place an order for EL7534IYZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7534IYZ-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 EL7534IYZ-T7 reliable?
The price and inventory of EL7534IYZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7534IYZ-T7 is usually 5 days.
3.What payment methods are accepted for EL7534IYZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7534IYZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7534IYZ-T7?
EL7534IYZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7534IYZ-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 EL7534IYZ-T7?
For technical support, including EL7534IYZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7534IYZ-T7 requirements.
6.How does Aetrix verify that EL7534IYZ-T7 is sourced from the original manufacturer or authorized distributors?
All EL7534IYZ-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 EL7534IYZ-T7 meets industry standards.
7.What is the process for return or replacement of EL7534IYZ-T7?
All EL7534IYZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with EL7534IYZ-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 EL7534IYZ-T7 part is unused and in its original packaging.
Return procedure for EL7534IYZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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