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Renesas EL7516IYZ
- Part No.:
- EL7516IYZ
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7516IYZ.pdf
- Description:
- IC REG BOOST ADJ 1.3A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,718
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Product details
Overview
EL7516IYZ from Intersil is a high-frequency, constant-frequency PWM step-up DC-DC regulator with an integrated 1.5A/200mΩ power MOSFET, selectable 600kHz or 1.2MHz switching frequency, 1.294V feedback reference, and operation from 2.5V to 5.5V input for 5V–18V output. It delivers up to 600mA at >90% efficiency and targets TFT-LCD bias supplies.
For engineers reviewing the EL7516IYZ datasheet, EL7516IYZ pinout, EL7516IYZ application, or EL7516IYZ equivalent, key selection considerations include its MSOP-8 package height (≤1.1mm), external compensation flexibility, adjustable soft-start via capacitor, thermal shutdown at 130°C, and FSEL-controlled frequency selection for inductor size and transient response trade-offs.
Technical Context
The EL7516IYZ implements current-mode PWM control with an internal transconductance error amplifier (90–170 µS) and fixed 1.294V reference. Its dual-frequency architecture uses the FSEL pin to select between 620kHz (±20%) or 1.25MHz (±20%) operation, enabling optimization of inductor size and load transient performance.
It features cycle-by-cycle peak current limiting (1.3A min, 1.5A typ), internal thermal shutdown at 130°C, and shutdown quiescent current <10µA. The COMP pin provides direct access to the error amplifier output for custom loop compensation using series RC networks, supporting stable regulation with low-ESR ceramic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Selectable 620kHz or 1.25MHz - enables smaller inductors (e.g., 2–22µH) and faster transient response. |
| Feedback Reference Voltage | 1.294V (typ) - sets output voltage via resistor divider: VOUT = 1.294V × (1 + R1/R2). |
| Integrated Power Switch | 1.5A, 200mΩ N-channel MOSFET - supports up to ~330mA output at 3.3V→12V @ 1.25MHz with 22µH inductor. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion, 3.3V, and 5V rails in portable systems. |
| Shutdown Current | <10µA - preserves battery life in standby mode for handheld and display applications. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
| Package | 8-lead MSOP, max height 1.1mm - surface-mount, space-constrained PCB layout compatibility. |
Pinout & Package
EL7516IYZ is housed in an 8-lead MSOP package (JEDEC MO-187AA, pkg drawing MDP0043), measuring 3.0mm × 4.9mm × 1.1mm max height, RoHS-compliant with matte tin terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connect series RC network to ground for loop compensation; sets transient response and stability. |
| 2 - FB | Feedback input | Senses divided output voltage; internal 1.294V reference determines regulated output level. |
| 3 - SHDN | Shutdown control | Logic-low disables switching and reduces IQ to <10µA; threshold varies with VIN (e.g., ~1.25V at 5V supply). |
| 4 - GND | Analog & power ground | Common return for feedback, compensation, and power paths; requires low-impedance PCB plane. |
| 5 - LX | Switch node | Drain of internal MOSFET; connects to inductor and Schottky diode anode; high dv/dt node requiring tight layout. |
| 6 - VDD | Analog supply input | Powers internal circuitry; requires local 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 7 - FSEL | Frequency select | GND = 620kHz; VDD = 1.25MHz - selects switching frequency without external components. |
| 8 - SS | Soft-start control | Internal 6µA current source charges external capacitor; controls output voltage ramp rate during startup. |
Key Features
| Feature | Design Value |
|---|---|
| Efficiency & power density | >90% typical efficiency at 3.3V→12V/300mA @ 1.25MHz enables compact, cool-running TFT-LCD backlight supplies. |
| Flexible frequency selection | Hardware-selectable 620kHz/1.25MHz allows trade-off between inductor size (smaller at 1.25MHz) and EMI profile (lower fundamental at 620kHz). |
| External loop compensation | COMP pin access enables tuning of phase margin and transient response for diverse output capacitor types (ceramic/tantalum) and load profiles. |
| Thermal protection | Internal shutdown at 130°C prevents damage during overload or poor heatsinking; auto-recovery on cooldown. |
| Low-profile packaging | 1.1mm max height MSOP-8 meets mechanical constraints in ultra-thin portable displays and handheld devices. |
Applications
| TFT-LCD Display Bias Supply | DSL Modem Power Rail |
|---|---|
Use Scenario: Generating 12V–18V bias for TFT-LCD source/gate drivers from a 3.3V system rail in portable monitors. IC Role / Device Role / Timing Role: Step-up DC-DC regulator providing regulated high-voltage bias with fast load transient response. Use Value: Achieves >90% efficiency and fits within 1.1mm Z-height constraint, enabling slim display module designs. | Use Scenario: Powering line-driver ICs and analog front-end circuitry in DSL modems operating from 5V input. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering stable 9V–12V output under dynamic load conditions. Use Value: 1.25MHz operation minimizes inductor footprint while maintaining >85% efficiency at 200mA loads. |
| Digital Camera Flash LED Driver Support | GSM/CDMA Handset Backlight |
Use Scenario: Supplying intermediate bus voltage (e.g., 9V) for flash LED driver ICs in compact digital cameras. IC Role / Device Role / Timing Role: Primary boost stage feeding a current-regulated LED driver; requires low quiescent current in standby. Use Value: Shutdown current <10µA extends battery life; 620kHz option reduces EMI coupling into image sensor circuits. | Use Scenario: Generating 5V–8V backlight supply for monochrome or color STN/TFT displays in 2G/3G handsets. IC Role / Device Role / Timing Role: Compact, efficient step-up regulator powering display bias from single-cell Li-ion (2.7–4.2V). Use Value: Wide 2.5V–5.5V input range ensures regulation across full battery discharge curve; MSOP-8 eases placement near display flex connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL97516 | Pin-to-pin compatible; higher 2.0A current limit (vs. 1.5A), 150°C thermal shutdown (vs. 130°C), fixed logic thresholds (vs. VIN-referenced SHDN). | Supports higher output current and extended ambient temperature range; simplifies SHDN interface design. | Preferred for new designs requiring higher robustness or simplified control logic; identical MSOP-8 footprint. |
| TPS61088RHLR | 5.5V–18V input, 10A switch, 2.5MHz fixed frequency, integrated LDO post-regulator; no FSEL or COMP pin. | Targets higher-power applications (e.g., >1A loads); lacks external compensation and frequency selection flexibility. | Consider when higher output current or tighter output regulation is required; requires layout redesign due to different pinout and control scheme. |
Compared with EL7516IYZ, ISL97516 offers enhanced current capability and thermal resilience while preserving drop-in compatibility, whereas TPS61088RHLR trades configurability for higher integration and power handling-making it suitable only where EL7516IYZ's 600mA limit or compensation needs are exceeded.
Availability
EL7516IYZ is available at Aetrix Electronics and suitable for TFT-LCD displays, DSL modems, and portable equipment requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for EL7516IYZ 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 EL7516 product line delivers compact, high-efficiency boost regulators optimized for space-constrained portable electronics, especially display bias and intermediate rail generation where low profile and high switching frequency are critical.
FAQ
What is the maximum output current capability of the EL7516IYZ?
The EL7516IYZ supports up to ~330mA output at 3.3V input to 12V output when operated at 1.25MHz with a 22µH inductor, based on its 1.5A (typ) internal MOSFET current limit and duty-cycle constraints. Actual deliverable current depends on input/output voltage ratio, inductor value, and thermal conditions. The EL7516IYZ datasheet Table 1 provides validated IOMAX values across common VIN/VOUT combinations.
How does the FSEL pin configure switching frequency on the EL7516IYZ?
The FSEL pin on the EL7516IYZ selects between two fixed PWM frequencies: connecting FSEL to GND sets 620kHz (±20%), while connecting it to VDD sets 1.25MHz (±20%). This hardware-based selection requires no external clock or configuration registers. The EL7516IYZ's frequency accuracy and stability are maintained across temperature and input voltage variations per the datasheet specifications.
Can the EL7516IYZ operate from a 2.5V input supply?
Yes, the EL7516IYZ is fully specified to operate from 2.5V to 5.5V input. Its VDD UVLO turn-on threshold is 2.51V (min), ensuring reliable startup even at the lower end of the input range. At 2.5V input, the EL7516IYZ can generate outputs such as 5V (IOMAX ≈ 570mA) or 9V (IOMAX ≈ 325mA) per datasheet Table 1, making it suitable for single-cell Li-ion or NiMH battery-powered systems.
What is the purpose of the COMP pin on the EL7516IYZ?
The COMP pin on the EL7516IYZ provides direct access to the output of the internal transconductance error amplifier. Connecting a series RC network from COMP to GND allows designers to tailor loop compensation for stability and transient response with various output capacitor types (e.g., ceramic or tantalum) and load conditions. This external compensation capability is a key differentiator of the EL7516IYZ versus fixed-compensation boost regulators.
Is the EL7516IYZ pin-compatible with any newer replacement parts?
Yes, the ISL97516 is explicitly designated as a pin-compatible replacement for the EL7516IYZ, sharing identical MSOP-8 pinout and function mapping. Key improvements include a higher 2.0A current limit, 150°C thermal shutdown, and fixed-shutdown logic thresholds. While the EL7516IYZ remains available, the ISL97516 is recommended for new designs requiring enhanced performance or simplified interface design.
EL7516IYZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- 18V (Switch)
- Current - Output:
- 1.3A (Switch)
- Frequency - Switching:
- 620kHz, 1.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
EL7516IYZ FAQ
1.How can I place an order for EL7516IYZ through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7516IYZ 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 EL7516IYZ reliable?
The price and inventory of EL7516IYZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7516IYZ is usually 5 days.
3.What payment methods are accepted for EL7516IYZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7516IYZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7516IYZ?
EL7516IYZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7516IYZ 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 EL7516IYZ?
For technical support, including EL7516IYZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7516IYZ requirements.
6.How does Aetrix verify that EL7516IYZ is sourced from the original manufacturer or authorized distributors?
All EL7516IYZ 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 EL7516IYZ meets industry standards.
7.What is the process for return or replacement of EL7516IYZ?
All EL7516IYZ units undergo pre-shipment inspection (PSI). If there is an issue with EL7516IYZ, 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 EL7516IYZ part is unused and in its original packaging.
Return procedure for EL7516IYZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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