My Inquiry
My Account
Renesas EL7515IYZ
- Part No.:
- EL7515IYZ
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7515IYZ.pdf
- Description:
- IC REG BOOST ADJ 1A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,884
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
EL7515IYZ 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 supports 4.5V–17V output and features <1µA shutdown current, making it suitable for portable DSL and TFT-LCD power supplies.
For engineers reviewing the EL7515IYZ datasheet, EL7515IYZ pinout, EL7515IYZ application, or EL7515IYZ equivalent, key selection criteria include its 10-lead MSOP package, low-battery detection (LBI/LBO), adjustable soft-start, internal thermal protection, and compatibility with single-cell Li-ion or dual-alkaline battery inputs.
Technical Context
The EL7515IYZ operates in fixed-frequency PWM mode using an internal oscillator controlled by the external RT resistor, enabling precise frequency tuning from ~600kHz to 1.2MHz. Its control architecture integrates a multi-input summing comparator, max-duty limiter (~90%), and current-limit comparator for stable regulation across input/output transients.
Startup employs a dedicated start-up oscillator (duty ~0.5–0.7) until VDD reaches ~3.7V, then transitions to PWM control; soft-start is implemented via a 12µA current source charging the SS capacitor to ramp peak switch current and limit output voltage slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 13.2V - supports single Li-ion, 2–4 NiMH, or 2 alkaline cells without external LDO pre-regulation. |
| Output Voltage Range | 4.5V to 17V - programmable via external resistor divider on FB pin; reference voltage = 1.33V (typ). |
| Max Output Current | 600mA at 12V out (VIN=3.3V) - limited by 1.4A internal MOSFET and thermal design; drops per VIN/VO trade-off per Table 1. |
| Switching Frequency | Adjustable up to 1.2MHz via RT pin - enables compact magnetics and reduces solution footprint to <0.25in². |
| Shutdown Current | <1µA - minimizes battery drain during standby; EN pin threshold: 1.6V (HI), 0.5V (LO). |
| Package | 10-lead MSOP, 3.0mm × 4.9mm × 1.1mm max height - RoHS-compliant Pb-free (e3 finish), MDP0043 footprint. |
| Operating Temp | −40°C to +85°C - fully specified over industrial temperature range with internal thermal shutdown at ~135°C. |
Pinout & Package
EL7515IYZ is housed in a 10-lead MSOP package (MDP0043) with 0.5mm pitch, 3.0mm × 4.9mm body, and maximum 1.1mm profile - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PGND) | Power ground | Source connection of internal N-MOSFET; must be low-inductance path to minimize switching noise and EMI. |
| 2 (SGND) | Signal ground | Reference for FB, SS, EN, LBI, LBO; single-point tie to PGND essential to avoid control loop instability. |
| 3 (RT) | Oscillator timing | Resistor-to-ground sets switching frequency (600–1200kHz); higher resistance lowers frequency. |
| 4 (EN) | Enable control | Logic-level input (1.6V HI threshold); pulls chip into full operation or <1µA shutdown state. |
| 5 (LBI) | Low-battery sense input | Analog input monitoring battery voltage; triggers LBO when voltage falls below 180–250mV threshold. |
| 6 (LBO) | Low-battery open-drain output | Sinks 1mA; used to signal microcontroller or disable downstream loads when battery is depleted. |
| 7 (SS) | Soft-start capacitor | External capacitor controls output voltage ramp rate; prevents inrush current and overshoot at startup. |
| 8 (FB) | Voltage feedback | High-impedance input (0.1µA bias) for resistor-divider network; sets output voltage via VOUT = VFB × (1 + R1/R2). |
| 9 (VDD) | Internal bias supply | Internally regulated supply for control circuitry; max rating 12V; RC filter recommended if VOUT >10V. |
| 10 (LX) | Switch node | Drain of internal N-MOSFET; connects directly to inductor; high dv/dt node requiring careful layout and snubbing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.4A MOSFET | Eliminates external high-side switch; reduces BOM count and layout complexity while maintaining 92% peak efficiency. |
| Adjustable soft-start | Programmable output voltage ramp via external SS capacitor prevents inrush current and stabilizes startup under light/no load. |
| Low-battery detection | Dedicated LBI/LBO pins enable system-level battery management without external comparators or ADC resources. |
| Thermal shutdown | Internal protection at ~135°C junction temperature prevents damage during overload or poor heatsinking conditions. |
| Pb-free MSOP package | RoHS-compliant e3 matte tin finish compatible with both SnPb and Pb-free reflow profiles per J-STD-020. |
Applications
| TFT-LCD Bias Supply | DSL Line Card Power |
|---|---|
|
Use Scenario: Generating 12V–15V bias rails for LCD gate drivers and source drivers from 3.3V or 5V system rails. IC Role / Device Role / Timing Role: Primary step-up regulator providing stable, low-noise high-voltage rail with fast transient response. Use Value: Enables compact, single-chip solution replacing discrete boost controllers + MOSFETs; 1.1mm height fits ultra-thin display modules. |
Use Scenario: Powering ADSL/SHDSL line interface ICs requiring 12V from 3.3V or 5V backplane supplies in CPE equipment. IC Role / Device Role / Timing Role: High-frequency boost converter delivering regulated 12V at up to 630mA with minimal board area. Use Value: 1.2MHz operation allows use of small 10µH inductors; <1µA shutdown extends battery backup runtime during power loss. |
| Portable Medical Monitor | Industrial Handheld Scanner |
|
Use Scenario: Providing 5V or 12V rails for analog front-end amplifiers and display backlight from single Li-ion cell (2.7–4.2V). IC Role / Device Role / Timing Role: Efficient step-up regulator with low-startup-voltage capability (1.8V) and battery health monitoring. Use Value: LBI/LBO integration eliminates external voltage monitor IC; soft-start ensures clean power-up of sensitive analog circuits. |
Use Scenario: Converting 2× alkaline (3V) or NiMH (2.4V) input to 5V/12V for laser diode drivers and image sensor interfaces. IC Role / Device Role / Timing Role: Compact, thermally robust boost regulator supporting intermittent high-current pulses during scan cycles. Use Value: Internal 1.4A MOSFET handles pulsed 600mA loads without external components; thermal shutdown protects against overheating in sealed enclosures. |
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 5.5A switch current, 2.7–12V input, fixed 500kHz/2MHz options; no LBI/LBO; requires external compensation. | Lacks integrated battery monitoring; better suited for high-current, non-battery-critical applications like USB PD sink. | Choose TPS61088RHLR when >600mA continuous output or higher input voltage (>13.2V) is required; not drop-in due to different pinout and control scheme. |
| MAX17222ETA+ | Lower 0.5A switch current, 0.7–5.5V input, fixed 1.2MHz, <0.5µA shutdown; no soft-start or LBO; 6-pin WLP package. | Targeted at ultra-low-power wearables; lacks battery monitoring and programmable frequency. | Choose MAX17222ETA+ only for sub-300mA, ultra-low-quiescent applications where size and shutdown current outweigh feature needs. |
Compared with TPS61088RHLR and MAX17222ETA+, the EL7515IYZ uniquely balances 600mA capability, integrated LBI/LBO, adjustable frequency, and soft-start in a 10-lead MSOP-making it optimal for DSL, portable medical, and TFT-LCD systems requiring battery-aware, compact boost conversion.
Availability
EL7515IYZ is available at Aetrix Electronics and suitable for DSL line cards, TFT-LCD bias supplies, and portable medical monitors requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for EL7515IYZ 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 mixed-signal semiconductor company specializing in power management, precision analog, and interface ICs.
The EL7515IYZ belongs to Intersil's high-efficiency DC/DC converter product line, designed specifically for space-constrained, battery-powered applications demanding high-frequency operation, low quiescent current, and integrated protection features.
FAQ
What is the minimum input voltage required for EL7515IYZ to start regulation?
The EL7515IYZ has a minimum starting voltage of 1.8V, allowing reliable startup from a single Li-ion cell (fully discharged at ~2.7V) or two alkaline cells (fresh at ~3.0V, depleted near 2.0V). Regulation begins once VDD reaches ~1.7V, and full PWM control engages at ~3.7V. This makes EL7515IYZ well-suited for portable equipment with aggressive battery discharge profiles.
Does EL7515IYZ support adjustable output voltage, and how is it configured?
Yes, EL7515IYZ supports fully adjustable output voltage from 4.5V to 17V using an external resistor divider connected to the FB pin. The internal reference voltage is 1.33V (typ), so VOUT = 1.33V × (1 + R1/R2). Feedback resistor values should total ≤300kΩ to minimize noise sensitivity and maintain efficiency; typical designs use 10kΩ (R2) and 82kΩ (R1) for 12V output.
What is the purpose of the LBI and LBO pins on EL7515IYZ?
The LBI (Low Battery Input) and LBO (Low Battery Output) pins on EL7515IYZ provide integrated battery monitoring: LBI accepts a scaled-down battery voltage, and when it falls below 180–250mV, LBO asserts low (sinking 1mA) to signal low battery condition. This eliminates need for external comparators in portable systems. If unused, LBI can be left open; LBO must be pulled up externally.
Can EL7515IYZ operate in discontinuous conduction mode (DCM), and what are the implications?
Yes, EL7515IYZ automatically operates in DCM at light loads, where inductor current falls to zero before the next switching cycle. This reduces switching losses and improves light-load efficiency. DCM behavior is normal and does not affect regulation stability; however, output voltage ripple may increase slightly compared to continuous conduction mode (CCM), especially with low-ESR ceramic output capacitors.
Is EL7515IYZ pin-compatible with other members of the EL7515 family, such as EL7515IY?
Yes, EL7515IYZ is pin-compatible with EL7515IY and EL7515IY-T7*, sharing identical 10-lead MSOP (MDP0043) footprint, pinout, and electrical specifications. The "Z" suffix denotes Pb-free (RoHS-compliant) construction with e3 matte tin termination, while non-Z versions use standard SnPb finish - both are mechanically and electrically interchangeable in existing layouts.
EL7515IYZ 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-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 FAQ
1.How can I place an order for EL7515IYZ through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7515IYZ 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 reliable?
The price and inventory of EL7515IYZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7515IYZ is usually 5 days.
3.What payment methods are accepted for EL7515IYZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7515IYZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7515IYZ?
EL7515IYZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7515IYZ 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?
For technical support, including EL7515IYZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7515IYZ requirements.
6.How does Aetrix verify that EL7515IYZ is sourced from the original manufacturer or authorized distributors?
All EL7515IYZ 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 meets industry standards.
7.What is the process for return or replacement of EL7515IYZ?
All EL7515IYZ units undergo pre-shipment inspection (PSI). If there is an issue with EL7515IYZ, 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 part is unused and in its original packaging.
Return procedure for EL7515IYZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
EL7515IYZ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
