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Renesas EL7516IY
- Part No.:
- EL7516IY
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7516IY.pdf
- Description:
- IC REG BOOST ADJ 1.3A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,429
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Product details
Overview
EL7516IY from Intersil is a constant-frequency PWM step-up DC/DC regulator with integrated 1.5A/200mΩ MOSFET, selectable 600kHz or 1.2MHz switching frequency, 1.294V feedback reference, and operation from 2.5V–5.5V input to 5V–18V output - used in TFT-LCD bias supplies and portable display power rails.
For engineers reviewing the EL7516IY datasheet, EL7516IY pinout, EL7516IY application, or EL7516IY equivalent, key selection considerations include its MSOP-8 package height (≤1.1mm), external compensation flexibility for ceramic capacitor compatibility, soft-start control via SS pin, thermal shutdown at +130°C, and shutdown current <10µA.
Technical Context
The EL7516IY implements current-mode PWM control with an internal transconductance error amplifier (GM = 90–170 µS) and fixed 1.294V reference. Its dual-frequency selection (FSEL pin logic level) enables trade-offs between inductor size and transient response.
It features cycle-by-cycle peak current limiting (1.3A min, 1.5A typ), internal soft-start (6µA charge current into SS pin), and UVLO on/off thresholds (2.51V / 2.30V). The LX switch node supports up to 18V, and GND serves as both analog and power return.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Selectable 600kHz or 1.2MHz - enables smaller inductors (e.g., 2–33µH) and faster load transient recovery. |
| Feedback Reference Voltage | 1.294V (typ) - sets output voltage via external resistor divider (VOUT = 1.294V × (1 + R1/R2)). |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V rail inputs without pre-regulation. |
| Peak Switch Current Limit | 1.3A (min), 1.5A (typ) - constrains maximum output current based on VIN/VOUT ratio and inductor value. |
| Shutdown Quiescent Current | <10µA - preserves battery life in portable systems during sleep or standby modes. |
| Operating Temperature Range | −40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
| Package | 8-pin MSOP, max height 1.1mm - low-profile footprint suitable for space-constrained LCD modules and handheld PCBs. |
Pinout & Package
EL7516IY is housed in an 8-lead MSOP package (MDP0043), measuring 3.0mm × 4.9mm × 1.1mm max, with exposed pad not electrically connected. Thermal resistance θJA is 115°C/W (2-layer board) or 100°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connect RC network to ground for loop compensation - sets integrator zero and high-frequency gain for stability and transient response. |
| 2 - FB | Feedback input | Senses divided output voltage; internal 1.294V reference compares against this node to regulate VOUT. |
| 3 - SHDN | Enable/disable control | Pull low to disable switching and reduce 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 layout connection to minimize noise coupling. |
| 5 - LX | Switch node | Drain of internal 1.5A MOSFET - connects to inductor and Schottky diode anode; handles high dv/dt and peak currents. |
| 6 - VDD | Analog supply input | Power for internal circuitry; requires local 0.1µF bypass capacitor placed adjacent to pin. |
| 7 - FSEL | Frequency select | GND = 600kHz; VDD = 1.2MHz - selects switching frequency without external clock or configuration register. |
| 8 - SS | Soft-start control | External capacitor sets ramp rate of output voltage during startup - prevents inrush current and overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.5A/200mΩ MOSFET | Eliminates external high-side switch and reduces BOM count while maintaining >90% efficiency at 3.3V→12V/300mA. |
| Selectable 600kHz / 1.2MHz switching | Enables optimization: 1.2MHz allows ≤4.7µH inductors for compact designs; 600kHz improves light-load efficiency and EMI profile. |
| External compensation (COMP pin) | Supports stable regulation with low-ESR ceramic output capacitors (e.g., X5R/X7R MLCCs), avoiding bulkier tantalum alternatives. |
| Adjustable soft-start (SS pin) | Prevents output overshoot and limits inrush by controlling VOUT ramp rate - critical for driving LCD bias rails with large capacitive loads. |
| Thermal shutdown at +130°C | Protects device under overload or poor heatsinking; auto-recovery after cooldown - avoids latch-up failure in enclosed portable enclosures. |
Applications
| TFT-LCD Display Power | Digital Camera Backlight Supply |
|---|---|
Use Scenario: Generating 12V–18V bias for source/gate drivers and LED backlight strings in handheld LCD panels. IC Role / Device Role / Timing Role: Primary step-up regulator delivering regulated high-voltage rail from single-cell Li-ion (3.3V nominal). Use Value: 90%+ efficiency at 300mA and 1.2MHz switching minimizes heat in thin bezel assemblies; 1.1mm MSOP fits tight board real estate. | Use Scenario: Powering white LED arrays in compact digital cameras requiring stable current sources. IC Role / Device Role / Timing Role: Constant-voltage boost stage feeding LED driver ICs or linear current regulators. Use Value: Adjustable soft-start prevents flash-triggered voltage droop; 600kHz option reduces conducted EMI near image sensor circuits. |
| DSL Modem Line Card | GSM/CDMA Handset RF Power Amplifier Bias |
Use Scenario: Providing isolated 5V–9V auxiliary supply for ADSL line interface ICs and PHY transceivers. IC Role / Device Role / Timing Role: Efficient local DC/DC conversion from main 3.3V system rail to higher-voltage analog subsystems. Use Value: Low shutdown current (<10µA) extends standby time; −40°C to +85°C rating ensures reliability in unventilated CPE enclosures. | Use Scenario: Delivering 5V–7V bias to RF power amplifiers during transmit bursts in mobile handsets. IC Role / Device Role / Timing Role: Fast-transient capable boost converter responding to dynamic PA supply demands. Use Value: 1.2MHz switching enables rapid load-step recovery (<100µs), minimizing PA gain compression during burst transmission. |
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 current limit (2.0A typ vs. 1.5A); fixed-shutdown thresholds (ground-referenced); OTP at +150°C. | Supports higher output current at same VIN/VOUT; simplified SHDN interface eliminates level-shifter design; better thermal margin in sealed enclosures. | Select ISL97516 for new designs requiring extended output capability or simplified enable logic - verified drop-in replacement per Intersil documentation. |
| TPS61088RHLR | 5.5V–12V input; 10A switch; adjustable frequency (200kHz–2.2MHz); integrated soft-start; no external COMP pin. | Higher power capacity and wider input range; lacks external compensation flexibility but offers simpler layout for less demanding regulation. | Choose TPS61088RHLR when scaling beyond 600mA output or needing broader VIN support - not pin-compatible; requires PCB redesign. |
Compared with EL7516IY, ISL97516 delivers higher output current headroom and fixed-threshold enable logic, while TPS61088RHLR provides greater power scalability and frequency tuning but mandates layout changes and forfeits external loop control - making EL7516IY optimal for cost-sensitive, space-constrained 300–600mA TFT-LCD applications where compensation tuning is essential.
Availability
EL7516IY is available at Aetrix Electronics and suitable for TFT-LCD displays, DSL modems, and portable equipment requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for EL7516IY 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 EL7516IY belongs to Intersil's legacy high-efficiency DC/DC converter family targeting portable display and battery-powered applications - engineered for minimal board area, low quiescent current, and robust thermal performance in compact enclosures.
FAQ
What is the maximum output voltage supported by the EL7516IY?
The EL7516IY supports output voltages from 5V up to 18V, limited by the absolute maximum LX-to-GND rating of 18V and the internal current limit. Output is set via external resistor divider on the FB pin using the 1.294V internal reference. For example, a 12V output requires R1/R2 ≈ 8.28. Operation above 15V requires careful attention to LX node ringing and Schottky diode reverse voltage rating.
Does the EL7516IY require an external Schottky diode?
Yes, the EL7516IY requires an external Schottky diode connected between LX and VOUT. The datasheet specifies a 1.5A-rated diode with low forward voltage (e.g., <0.6V) and fast recovery to maintain >90% efficiency. Diode reverse breakdown must exceed the maximum output voltage - for 12V output, ≥20V rating is recommended. No internal diode is integrated.
How does the FSEL pin affect EL7516IY operation?
The FSEL pin on the EL7516IY selects switching frequency: grounded → 600kHz (typ 620kHz), tied to VDD → 1.2MHz (typ 1.25MHz). This choice impacts inductor size (smaller at 1.2MHz), light-load efficiency (higher at 600kHz), and EMI profile. Frequency accuracy is ±20% over temperature and input voltage - no external components needed for selection.
Can the EL7516IY operate from a 2.5V input supply?
Yes, the EL7516IY operates down to 2.5V input (VDD UVLO turn-on threshold is 2.51V min). At 2.5V input, it can deliver ~250mA to 12V output (per Table 1) using a 22µH inductor and 1.2MHz switching. Input bypass capacitance must be ≥22µF to sustain peak current demand without excessive droop.
Is the EL7516IY RoHS compliant?
Yes, the EL7516IY is RoHS compliant. The "Z" suffix variants (e.g., EL7516IYZ-T7) denote Pb-free plus anneal construction with 100% matte tin termination, meeting IPC/JEDEC J-STD-020 reflow requirements for both SnPb and lead-free processes. Standard EL7516IY also complies with RoHS Directive 2011/65/EU per Intersil documentation.
What is the purpose of the COMP pin on the EL7516IY?
The COMP pin on the EL7516IY is the output of the internal transconductance error amplifier and serves as the compensation node for the voltage feedback loop. Connecting a series RC network (e.g., 4.7kΩ + 4.7nF) from COMP to GND sets loop stability and transient response - enabling use of low-ESR ceramic output capacitors without oscillation. It is not a power node and must not be shorted or loaded with active circuitry.
EL7516IY 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
EL7516IY FAQ
1.How can I place an order for EL7516IY through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7516IY 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 EL7516IY reliable?
The price and inventory of EL7516IY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7516IY is usually 5 days.
3.What payment methods are accepted for EL7516IY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7516IY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7516IY?
EL7516IY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7516IY 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 EL7516IY?
For technical support, including EL7516IY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7516IY requirements.
6.How does Aetrix verify that EL7516IY is sourced from the original manufacturer or authorized distributors?
All EL7516IY 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 EL7516IY meets industry standards.
7.What is the process for return or replacement of EL7516IY?
All EL7516IY units undergo pre-shipment inspection (PSI). If there is an issue with EL7516IY, 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 EL7516IY part is unused and in its original packaging.
Return procedure for EL7516IY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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