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Renesas EL7515IYZ-T13
- Part No.:
- EL7515IYZ-T13
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7515IYZ-T13.pdf
- Description:
- IC REG BOOST ADJ 1A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,813
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Product details
Overview
EL7515IYZ-T13 from Intersil is a high-frequency PWM step-up DC/DC regulator with integrated 1.4A N-channel MOSFET, delivering up to 600mA output current at 92% efficiency, adjustable switching frequency up to 1.2MHz, and input voltage range of 1.8V–13.2V. It serves as a compact, low-profile boost converter for portable power rails in DSL, TFT-LCD bias, and battery-powered systems.
For engineers reviewing the EL7515IYZ-T13 datasheet, EL7515IYZ-T13 pinout, EL7515IYZ-T13 application, or EL7515IYZ-T13 equivalent, key selection criteria include its 10-lead MSOP package (1.1mm max height), <1µA shutdown current, 1.29–1.37V feedback reference, internal thermal shutdown, and low-battery detection capability with LBI/LBO pins.
Technical Context
The EL7515IYZ-T13 operates in fixed-frequency PWM mode with direct-summing comparator control, supporting continuous or discontinuous conduction modes depending on load and component values. Its start-up sequence uses a dedicated oscillator until VDD reaches ~3.7V, then transitions to PWM regulation governed by feedback voltage, current limit, and max duty cycle (~90%).
It integrates a 220mΩ rDS(ON) MOSFET, 12µA soft-start current source, and a 220mV low-battery threshold comparator. The RT pin sets oscillation frequency via external resistor (49.9kΩ → 1.2MHz), while the FB pin senses output via resistor divider referenced to 1.33V typical VFB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 13.2V - supports single Li-ion, 2–4 NiMH/alkaline cells without external LDO pre-regulation. |
| Output Voltage Range | 4.5V to 17V - configurable via FB resistor divider; enables 3.3V→5V, 5V→12V, or 9V→15V conversion. |
| Max Output Current | 600mA at VIN=3.3V/VOUT=5V - limited by 1.4A peak switch current and thermal design on 2-layer PCB. |
| Switching Frequency | Up to 1.2MHz - set by RT resistor; allows small magnetics (e.g., 10µH) and <0.25in² total layout area. |
| Feedback Reference | 1.29V to 1.37V - tight 3% tolerance ensures ±1% output regulation across line/load/temperature. |
| Shutdown Current | <1µA - enables ultra-low quiescent power in battery standby mode. |
| Package | 10-lead MSOP, 3.0mm × 4.9mm × 1.1mm - RoHS-compliant Pb-free e3 termination, MDP0043 footprint. |
Pinout & Package
EL7515IYZ-T13 is housed in a 10-lead MSOP package (MDP0043) with 0.5mm pitch, 3.0mm × 4.9mm body, and maximum height of 1.1mm. Thermal performance is optimized via SGND pin conduction and copper pour under PGND/SGND pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pin 1) | Power ground return | Source connection of internal N-MOSFET; must be low-inductance path to minimize switching noise and EMI. |
| SGND (Pin 2) | Signal ground reference | Ground for FB, SS, EN, LBI, LBO, RT; requires single-point star connection to PGND to avoid control loop coupling. |
| RT (Pin 3) | Oscillator timing input | Resistor-to-ground sets switching frequency (e.g., 100kΩ → 670kHz); tolerates 1% resistor for stable fOSC. |
| EN (Pin 4) | Enable logic input | Active-high enable with 1.6V threshold; drives internal bias circuits only when pulled >1.6V. |
| LBI (Pin 5) | Low-battery sense input | Monitors external voltage divider; triggers LBO when input falls below 180–250mV threshold. |
| LBO (Pin 6) | Open-drain low-battery flag | Sinks 1mA when LBI drops below threshold; requires external pull-up for system-level battery alert signaling. |
| SS (Pin 7) | Soft-start capacitor node | Connects to external capacitor (e.g., 4.7nF) to linearly ramp output voltage and limit inrush current. |
| FB (Pin 8) | Voltage feedback input | Senses divided output voltage; regulates VOUT to 1.33V × (1 + R1/R2); trace must be short and shielded from noise. |
| VDD (Pin 9) | Internal bias supply | Internally regulated from VIN; max 12V rating; bypassed with 0.1µF ceramic close to pin. |
| LX (Pin 10) | Switch node | Drain of internal N-MOSFET; connects to inductor and catch diode; high dv/dt node requiring tight layout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.4A N-MOSFET | Eliminates external high-side switch; reduces BOM count and layout complexity for boost topology. |
| Adjustable soft-start | External capacitor on SS pin controls output ramp rate, preventing overshoot and limiting input inrush during power-up. |
| Low-battery detection | Dedicated LBI/LBO circuitry provides system-level battery monitoring without MCU intervention or additional comparators. |
| Thermal shutdown | Internal protection activates at ~135°C junction temperature, latching off until cooldown - prevents permanent damage under overload. |
| Pb-free MSOP package | RoHS-compliant e3 matte tin finish compatible with SnPb and Pb-free reflow profiles per J-STD-020. |
Applications
| DSL Line Card Power | TFT-LCD Bias Supply |
|---|---|
Use Scenario: Generating stable 12V rail from 3.3V or 5V backplane in ADSL/VDSL line cards with space constraints. IC Role / Device Role / Timing Role: Primary step-up regulator providing isolated, low-noise 12V for line driver amplifiers and analog front-end circuitry. Use Value: 1.2MHz operation enables use of 10µH inductors and ceramic output caps, reducing board area to <0.25in² while maintaining >90% efficiency at 300mA. | Use Scenario: Supplying gate drive voltages (e.g., +15V/-10V) for TFT-LCD source/gate drivers in handheld displays. IC Role / Device Role / Timing Role: High-efficiency boost converter generating positive bias rail from single-cell Li-ion (3.0–4.2V). Use Value: 1.8V minimum start-up voltage and <1µA shutdown current extend battery life in always-on display modules. |
| Portable Medical Monitor | Industrial Sensor Node |
Use Scenario: Powering analog signal chain (ADC, op-amps, reference) in battery-operated patient monitors requiring clean, regulated 5V/12V rails. IC Role / Device Role / Timing Role: Primary DC/DC converter delivering low-noise, thermally robust output with built-in low-battery warning. Use Value: LBI/LBO interface directly signals MCU when battery drops below safe operating threshold, enabling graceful shutdown before data loss. | Use Scenario: Providing 9V rail for RS-485 transceivers and sensor excitation in wireless industrial nodes powered by two alkaline AA cells. IC Role / Device Role / Timing Role: Efficient boost regulator sustaining operation down to 1.8V input, extending usable battery life beyond 200 hours. Use Value: 92% peak efficiency at light loads and 600mA capability support intermittent high-current bursts (e.g., radio transmit) without brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 8A switch current, 2.7–12V input, 4.5–20V output; requires external compensation; larger 14-pin QFN. | Supports higher output power (>5W) and wider input range but needs more design effort for stability. | Choose for >1A output or wider VIN range; not drop-in due to different pinout, compensation, and layout requirements. |
| MAX17222ETA+ | Lower 0.5A switch current, 0.4–5.5V input, 2.5–5.5V output; 1.2MHz fixed frequency; 6-pin WLP package. | Optimized for ultra-low-power sub-100mA applications; lacks LBO, thermal shutdown, and wide-VOUT capability. | Choose for space-constrained, low-IOUT (<150mA) designs where LBO and high-VOUT are unnecessary. |
Compared with TPS61088RHLR and MAX17222ETA+, the EL7515IYZ-T13 offers balanced 600mA output, integrated LBO/thermal protection, and proven 10-lead MSOP layout compatibility - making it optimal for mid-power portable boost applications needing reliability and minimal external components.
Availability
EL7515IYZ-T13 is available at Aetrix Electronics and suitable for DSL line cards, TFT-LCD bias supplies, portable medical monitors, industrial sensor nodes, and battery-powered instrumentation requiring stable component supply and long-term manufacturability.
Supply support for EL7515IYZ-T13 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.
The EL7515 belongs to Intersil's high-frequency PWM boost regulator product line, engineered specifically for space-constrained, battery-powered applications demanding high efficiency, low quiescent current, and integrated protection features.
FAQ
What is the minimum input voltage required for EL7515IYZ-T13 to start regulation?
The EL7515IYZ-T13 has a minimum starting voltage of 1.8V, verified across the full -40°C to +85°C operating temperature range. Regulation begins once VDD reaches ~1.7V, and full PWM control engages at ~3.7V. This enables reliable operation from a single Li-ion cell (2.7–4.2V) or two alkaline cells (up to 3.2V fresh).
Does EL7515IYZ-T13 support adjustable output voltage, and how is it configured?
Yes, EL7515IYZ-T13 supports adjustable output voltage from 4.5V to 17V using an external resistor divider connected to the FB pin. The output is set by VOUT = VFB × (1 + R1/R2), where VFB is 1.33V typical. A 10kΩ–100kΩ total divider resistance is recommended to balance accuracy, noise immunity, and quiescent current.
What is the purpose of the LBI and LBO pins on EL7515IYZ-T13?
The LBI (Low Battery Input) pin monitors a scaled-down battery voltage, and the LBO (Low Battery Output) pin is an open-drain flag that asserts low when LBI falls below 180–250mV. This pair enables autonomous battery health monitoring without MCU polling - critical for portable devices needing predictable shutdown behavior before brownout.
Can EL7515IYZ-T13 operate in discontinuous conduction mode (DCM), and what are the implications?
Yes, EL7515IYZ-T13 automatically transitions between continuous and discontinuous conduction modes based on load, input/output voltage, and inductor value. In DCM, the inductor current fully decays to zero each cycle, reducing light-load losses and enabling pulse-skipping behavior - which maintains high efficiency down to ~10mA output current.
Is EL7515IYZ-T13 pin-compatible with other members of the EL7515 family, such as EL7515IY-T13?
Yes, EL7515IYZ-T13 is functionally and physically identical to EL7515IY-T13 in pinout, electrical specifications, and package (10-lead MSOP), differing only in Pb-free (e3) termination versus standard leaded finish. Both share MDP0043 footprint, identical absolute maximum ratings, and identical thermal characteristics - enabling direct substitution in RoHS-compliant designs.
EL7515IYZ-T13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 13.2V
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 670kHz ~ 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
EL7515IYZ-T13 FAQ
1.How can I place an order for EL7515IYZ-T13 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7515IYZ-T13 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 EL7515IYZ-T13 reliable?
The price and inventory of EL7515IYZ-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7515IYZ-T13 is usually 5 days.
3.What payment methods are accepted for EL7515IYZ-T13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7515IYZ-T13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7515IYZ-T13?
EL7515IYZ-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7515IYZ-T13 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 EL7515IYZ-T13?
For technical support, including EL7515IYZ-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7515IYZ-T13 requirements.
6.How does Aetrix verify that EL7515IYZ-T13 is sourced from the original manufacturer or authorized distributors?
All EL7515IYZ-T13 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 EL7515IYZ-T13 meets industry standards.
7.What is the process for return or replacement of EL7515IYZ-T13?
All EL7515IYZ-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7515IYZ-T13, 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 EL7515IYZ-T13 part is unused and in its original packaging.
Return procedure for EL7515IYZ-T13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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