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Renesas EL7530IY
- Part No.:
- EL7530IY
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7530IY.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,369
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Product details
Overview
EL7530IY 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), and features 1.4MHz nominal switching frequency, 120µA no-load quiescent current, and Power-Good open-drain output - used in Li-ion–powered portable electronics requiring compact, high-efficiency power conversion.
For engineers reviewing the EL7530IY datasheet, EL7530IY pinout, EL7530IY application, or EL7530IY equivalent, key selection considerations include its MSOP10 package footprint (<0.18in² total converter area), 100% duty-cycle capability for low-dropout operation, thermal shutdown at 145°C, and external synchronization support up to 12MHz for EMI-sensitive designs.
Technical Context
The EL7530IY implements a voltage-mode synchronous buck controller with fixed internal compensation and dual-mode operation: automatic PFM at light loads (≥70% efficiency at 1mA) and forced or synchronized PWM at higher loads. Its control architecture uses a bandgap reference, soft-start circuitry (650µs), and dedicated SGND/PGND separation for noise immunity.
It integrates both high-side PMOS (70mΩ typical RDS(ON)) and low-side NMOS (45mΩ typical RDS(ON)) power switches, supports pre-biased start-up, and includes overcurrent protection (1.2A limit), over-temperature shutdown (145°C trip, 130°C hysteresis), and <1µA shutdown current - all within a single monolithic die.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V rails without external LDO pre-regulation. |
| Output Current | 600mA continuous - sufficient for core logic, RF transceivers, or small microcontrollers in portable systems. |
| Switching Frequency | 1.4MHz typical (1.25–1.6MHz range); synchronizable to 1.6–12MHz - enables small external LC components and EMI optimization. |
| Quiescent Current | 120µA in PFM mode - extends battery life in always-on, low-duty-cycle applications like barcode scanners. |
| Feedback Voltage | 800mV ±10mV - sets output via resistor divider; enables precise 1.8V, 2.5V, 3.3V, or custom voltages with <±1% regulation error. |
| Power-Good Threshold | 95% of target VFB rising / 86% falling - provides reliable system reset signaling with built-in hysteresis. |
| Thermal Shutdown | 145°C junction trip with 15°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Shutdown Current | <1µA - ensures zero-load battery drain during deep sleep or system off states. |
Pinout & Package
EL7530IY is housed in a 10-lead MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm, rated for –40°C to +85°C ambient operation. The fused-lead construction achieves θJA = 115°C/W on high-thermal-conductivity boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SGND) | Signal Ground Reference | Return path for control circuitry; must be separated from PGND and joined at single point near IC to avoid noise coupling. |
| 2 (PGND) | Power Ground Reference | Return path for high-current LX switching node; requires large copper pour and multiple vias for thermal dissipation. |
| 3 (LX) | Switch Node Output | Drives external inductor; carries high di/dt pulses - trace must be short and wide to minimize EMI and voltage spikes. |
| 4 (VIN) | Main Power Input | Supplies power stage (PMOS/NMOS); requires local 10µF ceramic capacitor placed adjacent to PIN 4 and PIN 2. |
| 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 | Pull to GND for auto PFM/PWM; pull to VIN for forced PWM; drive with 1.6–12MHz clock for synchronized operation. |
| 7 (EN) | Enable Input | Active-high logic input; 2.4V threshold ensures clean startup; <1µA leakage enables direct MCU GPIO control. |
| 8 (PG) | Power-Good Open Drain | Indicates regulated output; requires external 100kΩ pull-up to VIN; asserts low if VFB drops below 86% of target. |
| 9 (VO) | Output Voltage Sense | Direct connection to output rail; used with FB to monitor actual VOUT - improves load regulation accuracy. |
| 10 (FB) | Feedback Input | Connects to resistor divider (R1/R2) between VO and SGND; sets output per VOUT = 0.8V × (1 + R1/R2). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | Eliminates need for external MOSFETs and gate drivers - reduces BOM count and layout complexity in space-constrained designs. |
| Automatic PFM/PWM Transition | Maintains >70% efficiency at 1mA load while delivering up to 95% at 600mA - ideal for mixed-duty-cycle portable devices. |
| Internal Compensation | Removes requirement for external compensation network - simplifies design and guarantees stability with recommended 1.5–2.2µH inductor and 10–22µF ceramic caps. |
| 100% Duty-Cycle Capability | Enables dropout operation down to VOUT + ~100mV - supports ultra-low-voltage rails when input approaches output level. |
| Pre-Biased Start-Up Support | Allows safe turn-on into existing output voltage - prevents reverse current flow in multi-rail systems with staggered power sequencing. |
| RoHS-Compliant Packaging | Pb-free plus anneal MSOP10 (MDP0043) - meets IPC/JEDEC J-STD-020 reflow requirements for SnPb and Pb-free assembly. |
Applications
| Handheld Barcode Scanners | Li-Ion–Powered PDAs |
|---|---|
Use Scenario: Compact handheld scanner operating from single-cell Li-ion (3.0–4.2V) with intermittent 500mA peak current draw during laser activation and image capture. IC Role / Device Role / Timing Role: Primary step-down regulator supplying 1.8V to CMOS image sensor and 3.3V to ARM-based controller via dual-output configuration using two EL7530IY units. Use Value: 120µA quiescent current extends standby time beyond 72 hours; 1.4MHz switching allows use of 1.8µH inductor and 0.1µF ceramic output cap for minimal board area. | Use Scenario: Pocket PC with dual-core application processor, touchscreen controller, and Wi-Fi module requiring tightly regulated, low-noise 1.2V and 1.8V rails. IC Role / Device Role / Timing Role: Core voltage regulator delivering 600mA at 1.2V with external synchronization to system clock to suppress switching noise in analog audio paths. Use Value: 12MHz sync capability eliminates beat frequencies with audio DAC sampling clocks; PG output coordinates system boot sequence with PMIC. |
| Small Form Factor (SFP) Modules | Portable Test Equipment |
Use Scenario: Hot-pluggable optical transceiver module with strict 12mm height limit and thermal constraints in telecom chassis environments. IC Role / Device Role / Timing Role: Secondary regulator deriving 2.5V from 3.3V mid-rail to power laser driver IC and limiting diode bias circuits. Use Value: MSOP10 package (1.1mm max height) fits within SFP mechanical envelope; fused-lead construction sustains 870mW dissipation at 85°C ambient. | Use Scenario: Battery-operated handheld multimeter with LCD display, precision ADC, and Bluetooth LE radio operating across temperature extremes (–20°C to +60°C). IC Role / Device Role / Timing Role: Main power supply converting 3.7V Li-ion to stable 3.3V for digital subsystem and 1.8V for analog front-end. Use Value: –40°C to +85°C rating ensures full functionality at cold storage temperatures; <1µA shutdown current prevents battery drain during 6-month shelf life. |
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 microcontroller cores but lacks light-load efficiency and EMI control flexibility. | Select ISL9106IRZ-T7 only when board space is tighter and 300mA suffices - not a drop-in replacement due to different pinout and missing PG/VO pins. |
| TPS62231DRYT | 600mA output; 3.5MHz switching; integrated compensation; 17µA quiescent current; no PG or VO sense pins. | Better suited for ultra-thin wearables where 3.5MHz enables 1µH inductors, but lacks power-good signaling for system sequencing. | Choose TPS62231DRYT when lowest IQ dominates design priority and PG functionality is handled externally - pin count and function mapping differ significantly. |
Compared with ISL9106IRZ-T7 and TPS62231DRYT, EL7530IY uniquely combines 600mA capability, true PFM/PWM auto-transition, Power-Good output, and external synchronization - making it optimal for portable systems requiring both battery longevity and robust power sequencing.
Availability
EL7530IY is available at Aetrix Electronics and suitable for handheld barcode scanners, Li-ion–powered PDAs, SFP modules, and portable test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7530IY 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 converters, precision amplifiers, and interface solutions targeting industrial, communications, and portable markets.
The EL7530IY belongs to Intersil's monolithic synchronous buck regulator product line, engineered specifically for space-constrained, battery-powered applications demanding high light-load efficiency, fast transient response, and minimal external component count.
FAQ
What is the maximum output current capability of the EL7530IY?
The EL7530IY delivers up to 600mA continuous output current under typical conditions (TA = 25°C, 1.8µH inductor, 10µF input/output capacitors). Peak current limit is specified at 1.2A, providing headroom for transient surges. Derating applies above 60°C ambient due to thermal limits - full 600mA is sustainable up to 85°C with proper PCB copper area and thermal vias under the PGND pad.
Does the EL7530IY support pre-biased output start-up?
Yes, the EL7530IY supports pre-biased start-up. When enabled, it prevents reverse current flow into the output capacitor during turn-on by controlling the NMOS gate drive sequence. This behavior is confirmed in the Applications Information section of FN7434 Rev 6.00 and is critical for systems with multiple independent power rails that may power up out of sequence.
Can the EL7530IY operate with an input voltage lower than 2.5V?
No, the EL7530IY has a minimum specified input voltage of 2.5V per Absolute Maximum Ratings and Electrical Specifications tables in FN7434 Rev 6.00. Operation below 2.5V is not guaranteed and may result in failure to regulate, unstable PFM/PWM transition, or undervoltage lockout activation. For sub-2.5V inputs, consider alternative regulators such as the TPS6274x series.
What is the purpose of the VO pin on the EL7530IY, and is it required for basic operation?
The VO pin on the EL7530IY provides direct sensing of the output voltage rail and improves load regulation accuracy by compensating for IR drop in output traces. While basic regulation works using only FB and the resistor divider, connecting VO enhances regulation to ±0.5% across load and line variations - especially valuable in high-precision analog or RF subsystems powered by EL7530IY.
How does the EL7530IY handle thermal overload conditions?
The EL7530IY incorporates thermal shutdown with a 145°C junction trip point and 15°C hysteresis (restarting at ~130°C). During overload, both PMOS and NMOS FETs turn off, dropping output voltage to zero. Once cooled, the device automatically restarts with soft-start. This behavior is verified in the Thermal Shut-Down section of FN7434 Rev 6.00 and protects against permanent damage during sustained overloads or inadequate PCB thermal design.
EL7530IY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
EL7530IY FAQ
1.How can I place an order for EL7530IY through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7530IY 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 EL7530IY reliable?
The price and inventory of EL7530IY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7530IY is usually 5 days.
3.What payment methods are accepted for EL7530IY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7530IY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7530IY?
EL7530IY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7530IY 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 EL7530IY?
For technical support, including EL7530IY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7530IY requirements.
6.How does Aetrix verify that EL7530IY is sourced from the original manufacturer or authorized distributors?
All EL7530IY 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 EL7530IY meets industry standards.
7.What is the process for return or replacement of EL7530IY?
All EL7530IY units undergo pre-shipment inspection (PSI). If there is an issue with EL7530IY, 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 EL7530IY part is unused and in its original packaging.
Return procedure for EL7530IY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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