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Renesas EL7530IYZ-T13R5182
- Part No.:
- EL7530IYZ-T13R5182
- Manufacturer:
- Renesas
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EL7530IYZ-T13R5182.pdf
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Product details
Overview
EL7530IYZ-T13R5182 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 from 0.8V to VIN, and features 1.4MHz nominal switching frequency, 120µA quiescent current in PFM mode, and Power-Good (PG) open-drain output - optimized for Li-Ion–powered portable electronics.
For engineers reviewing the EL7530IYZ-T13R5182 datasheet, EL7530IYZ-T13R5182 pinout, EL7530IYZ-T13R5182 application, or EL7530IYZ-T13R5182 equivalent, key selection criteria include its 10-lead MSOP package, <1µA shutdown current, ±5% output regulation accuracy, thermal shutdown at 145°C, and external synchronization capability up to 12MHz.
Technical Context
The EL7530IYZ-T13R5182 implements a voltage-mode PWM controller with fixed internal compensation and automatic PFM/PWM transition based on load current. Its dual-MOSFET synchronous architecture eliminates the need for an external diode, enabling up to 95% efficiency at 600mA output.
It supports three operating modes: auto PFM/PWM (SYNC = GND), forced PWM (SYNC = VIN), or externally synchronized PWM (SYNC = 1.6–12MHz clock). The PG output asserts high only when EN is active and FB voltage is within ±5% of 800mV reference, providing reliable power sequencing feedback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous; peak current limit 1.2A - supports stable operation under transient loads in portable systems. |
| Input Voltage Range | 2.5V to 5.5V - directly compatible with single-cell Li-Ion (2.7–4.2V), 3.3V, and 5V rails without pre-regulation. |
| Quiescent Current | 120µA typical in PFM mode - extends battery life in always-on or low-duty-cycle applications like barcode scanners. |
| Switching Frequency | 1.4MHz typical (1.25–1.6MHz range); synchronizable to 12MHz - enables compact LC filter design and EMI reduction via clock alignment. |
| Feedback Reference | 800mV ±10mV - sets output voltage via external resistor divider (VO = 0.8V × (1 + R1/R2)), supporting precise point-of-load regulation. |
| Shutdown Current | <1µA - ensures near-zero power drain during system sleep, critical for battery-backed real-time clocks or sensors. |
| Thermal Protection | Over-temperature shutdown at 145°C with 15°C hysteresis (re-enable at 130°C) - prevents damage during sustained overload or poor PCB thermal design. |
Pinout & Package
EL7530IYZ-T13R5182 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 ground for control circuitry; must be separated from PGND and connected at single point near IC to minimize noise coupling. |
| 2 (PGND) | Power Ground | Return path for high-current power stage (LX, VIN); requires large copper pour and multiple vias for thermal and EMI performance. |
| 3 (LX) | Switch Node | High-current switched output driving inductor; fast edge rates demand short, low-inductance routing to minimize ringing and EMI. |
| 4 (VIN) | Power Stage Input | Primary input supply (2.5–5.5V) for NMOS/PMOS FETs; requires local 10µF ceramic capacitor placed adjacent to VIN and PGND pins. |
| 5 (VDD) | Controller Supply | Bias supply for internal logic and reference; decoupled internally but benefits from shared input cap with VIN. |
| 6 (SYNC) | Mode Control / Sync Input | Configures operation: GND = auto PFM/PWM; VIN = forced PWM; external 1.6–12MHz clock = synchronized PWM - enables EMI management. |
| 7 (EN) | Enable Input | Active-high logic input; rising threshold 2.4V, falling threshold 0.8V; <1µA shutdown current ensures minimal leakage in disabled state. |
| 8 (PG) | Power-Good Output | Open-drain status signal pulled high via external 100kΩ resistor; asserts high only when output is within ±5% of target and EN is active. |
| 9 (VO) | Output Sense | Direct connection to regulated output node; used with FB to monitor actual VO for stability and load regulation verification. |
| 10 (FB) | Voltage Feedback Input | High-impedance input (100nA bias) referenced to SGND; connects to mid-point of R1/R2 divider to set output voltage per VO = 0.8V × (1 + R1/R2). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | Eliminates external Schottky diode, reduces conduction loss, and improves light-load efficiency beyond 70% at 1mA. |
| Automatic PFM/PWM Transition | Seamlessly shifts between discontinuous-conduction (PFM) and continuous-conduction (PWM) modes based on load - no external control required. |
| Internally Compensated Controller | Removes need for external compensation network; supports stable operation with 1.5–2.2µH inductors and 10–22µF ceramic capacitors. |
| Low-Profile MSOP10 Package | 1.1mm max height and 0.18in² total converter footprint enable use in space-constrained SFP modules and handheld devices. |
| Robust Protection Suite | Includes overcurrent limiting (1.2A), thermal shutdown (145°C), and short-circuit protection - ensures reliability in unattended embedded deployments. |
Applications
| Li-Ion–Powered Portable Instruments | Small Form Factor (SFP) Transceivers |
|---|---|
Use Scenario: Battery-powered handheld test equipment requiring stable 1.8V rail at 600mA with minimal standby drain. IC Role / Device Role / Timing Role: Primary step-down regulator delivering regulated core voltage to microcontroller and ADC subsystems. Use Value: 120µA quiescent current extends runtime between charges; 1.4MHz switching allows use of tiny 1.8µH inductor and 10µF ceramic caps. |
Use Scenario: Compact optical transceiver module needing tightly regulated 3.3V supply from 3.3V or 5V backplane with strict EMI limits. IC Role / Device Role / Timing Role: Efficient point-of-load converter with SYNC input synchronized to system clock to suppress switching noise in analog front-end. Use Value: External 12MHz synchronization avoids beat frequencies with data lanes; MSOP10 footprint fits within 12.3mm × 10.3mm SFP mechanical envelope. |
| Barcode Scanners | Ultra-Compact PDAs |
Use Scenario: Duty-cycled laser scanner operating intermittently from single-cell Li-Ion, requiring rapid startup and low idle power. IC Role / Device Role / Timing Role: Main power supply enabling instant wake-up from deep sleep via EN pin control and soft-start functionality. Use Value: <1µA shutdown current preserves battery during idle; 650µs soft-start prevents inrush-induced brownout on shared battery rail. |
Use Scenario: Legacy PDA with tight board area budget and thermal constraints, needing efficient 1.2V core supply at 600mA. IC Role / Device Role / Timing Role: High-efficiency buck converter replacing discrete solutions to reduce component count and improve thermal margin. Use Value: 95% peak efficiency minimizes heat generation; fused-lead MSOP10 package achieves θJA = 115°C/W on 4-layer board. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL9106IRZ-T7 | Lower 300mA output current; 3MHz fixed-frequency PWM only; no PFM mode or SYNC input. | Suitable for lower-power applications where size and light-load efficiency are secondary to ultra-high switching frequency. | Select ISL9106IRZ-T7 only if output current ≤300mA and EMI filtering favors 3MHz over 1.4MHz. |
| TPS62231DRYT | 600mA output; 3.5MHz fixed PWM; 17µA quiescent current; no PG output or thermal hysteresis spec. | Better suited for space-constrained designs needing smallest possible inductor, but lacks power sequencing and robust thermal protection. | Choose TPS62231DRYT when board area is critical and system-level thermal monitoring replaces IC-level hysteresis. |
Compared with EL7530IYZ-T13R5182, ISL9106IRZ-T7 trades output capability and adaptive efficiency for higher frequency, while TPS62231DRYT sacrifices PG signaling and thermal hysteresis for ultra-low IQ and smaller magnetics - neither offers pin compatibility or identical feature parity.
Availability
EL7530IYZ-T13R5182 is available at Aetrix Electronics and suitable for Li-Ion–powered portable instruments, small form factor (SFP) transceivers, barcode scanners, and ultra-compact PDAs requiring stable component supply across long-lifecycle industrial and communications programs.
Supply support for EL7530IYZ-T13R5182 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, computing, and communications markets.
The EL7530 product line targets space- and power-constrained portable electronics, delivering integrated synchronous buck regulation with minimal external components and robust protection for battery-operated systems.
FAQ
What is the recommended inductor value for EL7530IYZ-T13R5182 in a 1.8V @ 600mA application?
The EL7530IYZ-T13R5182 datasheet specifies a 1.8µH inductor for the 1.8V @ 600mA typical application. This value balances ripple current, efficiency, and transient response. Inductor selection must support ≥2A surge current during current-limit events and maintain saturation current above peak inductor current (≈900mA). Use shielded power inductors with low DCR to maximize efficiency.
Does EL7530IYZ-T13R5182 support pre-biased output startup?
Yes, EL7530IYZ-T13R5182 supports pre-biased output startup. When EN is asserted, the device begins in PFM mode regardless of SYNC pin state, allowing safe ramp-up even when VO is already partially charged. This prevents reverse current flow into the output capacitor and avoids potential damage to downstream circuitry during hot-plug or multi-rail sequencing scenarios.
How is the Power-Good (PG) output of EL7530IYZ-T13R5182 configured and used?
The PG pin (Pin 8) of EL7530IYZ-T13R5182 is an open-drain NMOS output requiring an external pull-up resistor (typically 100kΩ to VIN). It asserts high only when EN is high and the FB voltage remains within ±5% of 800mV (i.e., 760–840mV) for >100µs. This provides reliable power-sequencing feedback to microcontrollers or FPGA configuration logic before system initialization proceeds.
Can EL7530IYZ-T13R5182 be synchronized to a 10MHz clock source?
Yes, EL7530IYZ-T13R5182 accepts external synchronization from 1.6MHz to 12MHz, including 10MHz. The SYNC pin must receive clean, rail-to-rail CMOS-compatible signals with minimum pulse width ≥25ns. Synchronizing to 10MHz reduces beat frequencies in dense PCB layouts and simplifies EMI filter design by concentrating switching energy at a known, controllable frequency.
What is the thermal resistance (θJA) of EL7530IYZ-T13R5182 on a standard 4-layer PCB?
EL7530IYZ-T13R5182 has a typical junction-to-ambient thermal resistance (θJA) of 115°C/W on a JEDEC JESD51-7 high-thermal-conductivity 4-layer test board. Achieving this requires adequate copper pour on inner layers, multiple thermal vias under the PGND pad, and minimized trace length for high-current paths. On a 2-layer board, θJA rises to ~125°C/W, necessitating derating above 400mA at full ambient temperature.
EL7530IYZ-T13R5182 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
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- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
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- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
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EL7530IYZ-T13R5182 FAQ
1.How can I place an order for EL7530IYZ-T13R5182 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7530IYZ-T13R5182 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-T13R5182 reliable?
The price and inventory of EL7530IYZ-T13R5182 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7530IYZ-T13R5182 is usually 5 days.
3.What payment methods are accepted for EL7530IYZ-T13R5182?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7530IYZ-T13R5182 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7530IYZ-T13R5182?
EL7530IYZ-T13R5182 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7530IYZ-T13R5182 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-T13R5182?
For technical support, including EL7530IYZ-T13R5182 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7530IYZ-T13R5182 requirements.
6.How does Aetrix verify that EL7530IYZ-T13R5182 is sourced from the original manufacturer or authorized distributors?
All EL7530IYZ-T13R5182 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-T13R5182 meets industry standards.
7.What is the process for return or replacement of EL7530IYZ-T13R5182?
All EL7530IYZ-T13R5182 units undergo pre-shipment inspection (PSI). If there is an issue with EL7530IYZ-T13R5182, 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-T13R5182 part is unused and in its original packaging.
Return procedure for EL7530IYZ-T13R5182:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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