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Renesas EL7530IYZ-T7R5182
- Part No.:
- EL7530IYZ-T7R5182
- Manufacturer:
- Renesas
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EL7530IYZ-T7R5182.pdf
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Product details
Overview
EL7530IYZ-T7R5182 from Intersil is a synchronous 600mA step-down DC-DC regulator with integrated PMOS/NMOS FETs, internal compensation, and automatic PFM/PWM mode control. It operates from 2.5V to 5.5V input, delivers adjustable output (0.8V to VIN), features 1.4MHz nominal switching frequency (synchronizable up to 12MHz), and achieves up to 95% efficiency in portable Li-Ion–powered systems.
For engineers reviewing the EL7530IYZ-T7R5182 datasheet, EL7530IYZ-T7R5182 pinout, EL7530IYZ-T7R5182 application, or EL7530IYZ-T7R5182 equivalent, key selection criteria include quiescent current (120µA in PFM mode), Power-Good output behavior, thermal shutdown threshold (145°C), MSOP-10 package footprint constraints, and external synchronization capability for EMI-sensitive designs.
Technical Context
The EL7530IYZ-T7R5182 implements a voltage-mode synchronous buck controller with fixed internal compensation and dual-mode operation: automatic PFM at light loads (<100mA) and forced PWM at higher loads or when SYNC is pulled high. Its architecture integrates both power switches, eliminating external MOSFETs and simplifying layout.
It uses separate signal ground (SGND) and power ground (PGND) pins to minimize noise coupling, supports pre-biased startup via soft-start circuitry, and includes dedicated overcurrent protection (1.2A peak limit) and thermal shutdown with 15°C hysteresis (145°C trip, 130°C recovery).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous; supports transient peaks up to 800mA without derating under typical conditions. |
| 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 | 1.4MHz typical (PWM); externally synchronizable from 1.6MHz to 12MHz for EMI reduction. |
| Quiescent Current | 120µA in PFM mode - enables >70% efficiency at 1mA load for battery longevity. |
| Shutdown Current | <1µA - ensures near-zero system standby drain when EN is low. |
| Feedback Voltage | 800mV ±10mV - sets output via resistor divider; enables precise 0.8V–VIN adjustment. |
| Thermal Protection | 145°C shutdown with 130°C restart - prevents damage during sustained overload or poor heatsinking. |
| Efficiency | Up to 95% at 600mA - achieved using synchronous rectification and low RDS(ON) (70mΩ PMOS / 45mΩ NMOS). |
Pinout & Package
The EL7530IYZ-T7R5182 is housed in a RoHS-compliant, Pb-free 10-lead MSOP package (MDP0043), measuring 3.0mm × 4.9mm × 1.1mm max height, rated for –40°C to +85°C ambient operation.
| 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 Reference | Return path for high-current LX switching node; requires large copper pour for thermal and EMI performance. |
| 3 LX | Switch Node Output | Drives external inductor; carries pulsed high di/dt current; must be routed short and wide to minimize ringing. |
| 4 VIN | Power Stage Input Supply | Connects to input capacitor; supplies NMOS/PMOS switches; decoupling critical for stability. |
| 5 VDD | Controller Supply Rail | Provides bias for internal logic and reference; requires local 0.1µF ceramic bypass to SGND. |
| 6 SYNC | Mode Control & Sync Input | Ground = auto PFM/PWM; VIN = forced PWM; external clock = synchronized PWM up to 12MHz. |
| 7 EN | Enable Input | Active-high logic input; rising threshold 2.4V; falling threshold 0.8V; <1µA shutdown current when low. |
| 8 PG | Open-Drain Power-Good | Asserts high when VO is within ±5% of target; requires external 100kΩ pull-up to VIN or VCC. |
| 9 VO | Output Voltage Sense | Direct connection point for output capacitor; used with FB to monitor regulated output voltage. |
| 10 FB | Voltage Feedback Input | Accepts resistive divider output; 800mV reference sets VO = 0.8V × (1 + R1/R2); high-impedance (100nA). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | Eliminates need for external MOSFETs and gate drivers; reduces BOM count and board area by >30% vs discrete solutions. |
| Auto PFM/PWM Transition | Maintains >70% efficiency at 1mA load while delivering 95% at full 600mA - ideal for burst-mode portable applications. |
| Internal Compensation | Enables stable operation with only three external components (inductor + two 10µF ceramics); no loop tuning required. |
| Power-Good Output | Provides system-level sequencing and fault indication; open-drain structure allows flexible voltage-level interfacing. |
| Low-Profile MSOP-10 | 0.18 in² total converter footprint with one-side assembly; 1.1mm max height meets ultra-thin portable design constraints. |
| Robust Protection Suite | Includes cycle-by-cycle current limiting (1.2A), thermal shutdown (145°C), and short-circuit foldback - no external protection needed. |
Applications
| Li-Ion–Powered Handhelds | Barcode Scanners |
|---|---|
|
Use Scenario: Power management in compact handheld devices operating from single-cell Li-Ion batteries with dynamic load profiles. IC Role / Device Role / Timing Role: Primary 1.8V/3.3V step-down regulator supplying processor core, memory, and interface ICs. Use Value: 120µA quiescent current extends battery life in sleep mode; PFM mode maintains >75% efficiency at 10mA idle current. |
Use Scenario: Compact, battery-operated scanning units requiring reliable 3.3V rail for laser diode driver and CMOS image sensor. IC Role / Device Role / Timing Role: Main DC-DC converter delivering regulated 3.3V at up to 600mA with fast transient response. Use Value: 95% peak efficiency minimizes heat buildup in sealed enclosures; 1.4MHz switching enables small 1.8µH inductor. |
| Portable Test Equipment | SFP Optical Transceivers |
|
Use Scenario: Battery-powered multimeters and signal generators needing clean, low-noise 2.5V/5V rails for precision analog front-ends. IC Role / Device Role / Timing Role: Low-noise synchronous buck supplying ADC references and op-amp bias rails. Use Value: Separated SGND/PGND pins and internal compensation reduce output ripple to <10mVpp; SYNC pin enables EMI spread-spectrum sync. |
Use Scenario: Small-form-factor pluggable modules where space, thermal density, and startup reliability are critical. IC Role / Device Role / Timing Role: Secondary regulator generating 1.8V or 2.5V for laser driver ICs and digital control logic. Use Value: Pre-biased startup support ensures safe operation with hot-plug insertion; PG output enables module presence detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL9106 | Lower 400mA output rating; 3MHz fixed-frequency PWM only; no PFM mode or SYNC input. | Lacks light-load efficiency optimization and EMI synchronization - unsuitable for battery-critical or noise-sensitive designs. | Consider only if design requires smaller solution size and accepts reduced efficiency below 50mA load. |
| TPS62231DRVR | 600mA output; 3.6MHz fixed PWM; 17µA quiescent current; no PFM mode; different pinout and enable logic. | Higher switching frequency enables smaller passive components but sacrifices light-load efficiency and flexibility. | Prefer when board space is constrained and constant high-frequency operation is acceptable; verify PCB layout compatibility. |
Compared with ISL9106 and TPS62231DRVR, the EL7530IYZ-T7R5182 uniquely combines 600mA capability, automatic PFM/PWM transition, 12MHz synchronization, and MSOP-10 integration - making it optimal for space-constrained, battery-powered systems demanding both efficiency and EMI control.
Availability
EL7530IYZ-T7R5182 is available at Aetrix Electronics and suitable for portable medical monitors, barcode scanners, Li-Ion–powered instrumentation, and SFP transceiver modules requiring stable component supply across extended production lifecycles.
Supply support for EL7530IYZ-T7R5182 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 IC designer known for high-performance DC-DC regulators, precision amplifiers, and interface solutions targeting industrial and portable markets.
The EL7530IYZ-T7R5182 belongs to Intersil's monolithic synchronous buck regulator product line, engineered specifically for compact, battery-efficient portable electronics requiring minimal external components and robust thermal protection.
FAQ
What is the maximum output current capability of the EL7530IYZ-T7R5182?
The EL7530IYZ-T7R5182 delivers 600mA continuously under standard thermal conditions (TA ≤ +85°C, 4-layer PCB). Its peak current limit is 1.2A, allowing brief transients without shutdown. Derating is required above 85°C ambient or on 2-layer boards due to thermal resistance (θJA = 115°C/W on high-conductivity board).
Does the EL7530IYZ-T7R5182 support pre-biased output startup?
Yes, the EL7530IYZ-T7R5182 supports pre-biased output startup. When EN is asserted, the device begins in PFM mode regardless of SYNC state, enabling safe ramp-up into an already charged output capacitor - critical for hot-swap and multi-rail sequencing applications.
How does the Power-Good (PG) output of the EL7530IYZ-T7R5182 behave during fault conditions?
The EL7530IYZ-T7R5182 PG pin is an open-drain output that pulls low when output voltage falls outside ±5% of the target (e.g., during undervoltage, overtemperature, or short-circuit events). It remains low until VO recovers and stabilizes, providing reliable system-level fault signaling without external logic.
Can the EL7530IYZ-T7R5182 be synchronized to an external clock, and what is the valid frequency range?
Yes, the EL7530IYZ-T7R5182 accepts external synchronization on the SYNC pin across 1.6MHz to 12MHz. The input must be a clean CMOS-level square wave; pulse width must exceed 25ns. This feature enables EMI reduction through frequency dithering or alignment with system clocks.
What are the recommended external components for the EL7530IYZ-T7R5182 in a standard 1.8V @ 600mA application?
For 1.8V output at 600mA, use a 1.8µH shielded inductor (2A saturation current), 10µF X5R/X7R ceramic input/output capacitors, and a phase-lead capacitor C4 = 470pF. The feedback divider should be R1 = 124kΩ and R2 = 100kΩ to set VFB = 800mV. Layout must separate SGND and PGND with single-point tie near pins 1 and 2.
EL7530IYZ-T7R5182 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- -
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- Topology:
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- Voltage - Input (Min):
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- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
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- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
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- Supplier Device Package:
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EL7530IYZ-T7R5182 FAQ
1.How can I place an order for EL7530IYZ-T7R5182 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7530IYZ-T7R5182 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 EL7530IYZ-T7R5182 reliable?
The price and inventory of EL7530IYZ-T7R5182 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7530IYZ-T7R5182 is usually 5 days.
3.What payment methods are accepted for EL7530IYZ-T7R5182?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7530IYZ-T7R5182 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7530IYZ-T7R5182?
EL7530IYZ-T7R5182 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7530IYZ-T7R5182 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 EL7530IYZ-T7R5182?
For technical support, including EL7530IYZ-T7R5182 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7530IYZ-T7R5182 requirements.
6.How does Aetrix verify that EL7530IYZ-T7R5182 is sourced from the original manufacturer or authorized distributors?
All EL7530IYZ-T7R5182 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 EL7530IYZ-T7R5182 meets industry standards.
7.What is the process for return or replacement of EL7530IYZ-T7R5182?
All EL7530IYZ-T7R5182 units undergo pre-shipment inspection (PSI). If there is an issue with EL7530IYZ-T7R5182, 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 EL7530IYZ-T7R5182 part is unused and in its original packaging.
Return procedure for EL7530IYZ-T7R5182:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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