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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

Renesas EL7586ILZ

Name: EL7586ILZ
Brand: Renesas
SKU: EL7586ILZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: EL7586ILZ

Manufacturer:: Renesas

Category:: Special Purpose Regulators

Package:: 20-VFQFN Exposed Pad

Datasheet:: EL7586ILZ.pdf

Description:: IC REG CONV TFT LCD 4OUT 20QFN

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Product details

Overview

EL7586ILZ from Intersil is a TFT-LCD multi-output power supply IC integrating a 2A boost converter, two positive LDO controllers (VON, VLOGIC), and one negative LDO controller (VOFF), all with fault protection and programmable startup sequencing. It operates from 3V–5.5V input, delivers up to 20V boost output, and supports -40°C to +85°C ambient temperature in a 20-lead 4×4 QFN package.

For engineers reviewing the EL7586ILZ datasheet, EL7586ILZ pinout, EL7586ILZ application, or EL7586ILZ equivalent, this page provides verified technical context, confirmed pin functions, real-world sequencing behavior, and validated alternatives for LCD panel power design.

Technical Context

The EL7586ILZ implements a fixed-frequency (900–1100 kHz) current-mode PWM boost regulator with integrated 2A N-channel FET, supporting both P-mode and PI-mode operation via CINT pin configuration. Its four regulated outputs-VBOOST, VON, VOFF, and VLOGIC-are independently controlled using external feedback resistors and charge-pump stages.

Startup sequencing is capacitor-programmable (CDLY), enabling either VBOOST/VLOGIC → VOFF → VON or VLOGIC → VOFF → VBOOST → VON order; fault detection latches off all outputs until EN or VDD cycling. Thermal shutdown, overcurrent, and undervoltage fault protection are fully integrated and monitored per channel.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.0 V to 5.5 V - compatible with standard 3.3 V or 5 V system rails without external regulation.
Boost Output Range	5.5 V to 20 V - supports AVDD generation for large-panel TFT-LCD row/column drivers.
VLOGIC LDO Drive	Up to 16 mA sink current - sufficient to drive base of high-current PNP pass transistor (e.g., FMMT549) for ≥500 mA logic rail.
Regulation Accuracy	±1% on all outputs - ensures stable biasing of LCD gate drivers and timing-critical logic interfaces.
Startup Delay Control	Programmable via CDLY capacitor (10–220 nF) - enables precise inter-rail timing (e.g., 30 ms turn-on delay, 10 ms VON–VOFF offset).
Fault Response Time	50 ms timeout (CDLY = 0.22 µF) - allows clean latch-off and reset coordination across all four channels during overvoltage/overcurrent events.
Operating Temperature	-40°C to +85°C - qualified for industrial and commercial LCD monitor, TV, and notebook display environments.

Pinout & Package

EL7586ILZ is housed in a 20-lead, 4 mm × 4 mm, 0.5 mm pitch QFN package with exposed thermal pad (MDP0046). The package is Pb-free plus anneal (RoHS compliant) and rated MSL 3 per JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 CDLY	Sequencing & fault timing capacitor node	Connects to GND to set startup delay and fault timeout; 0.22 µF yields 30 ms turn-on and 50 ms fault ramp.
2 DELB	Open-drain delay control output	Sinks 50 µA initially to softly enable external VBOOST-delay FET (Q4); pulls hard low (<0.6 V) after sequencing completes.
3,4 LX1, LX2	Internal boost FET drain terminals	LX1 is active; LX2 is no-connect for EL7586ILZ (not EL7586AILZ).
5 DRVP	VON LDO base-drive output	Open-drain N-FET drives base of external PNP pass transistor (e.g., MMBT3906) for +15 V to +36 V VON rail.
6 FBP	VON feedback input	Regulates to 1.205 V nominal; fault trips at 0.87 V falling - monitors post-charge-pump VON stability.
7 DRVL	VLOGIC LDO base-drive output	16 mA max sink drives PNP pass device (e.g., FMMT549); supports 100–500 mA logic rail with <0.5% load regulation.
8 FBL	VLOGIC feedback input	Regulates to 1.205 V nominal; fault threshold 0.87 V - ensures reliable logic voltage under dynamic load.
9,17 SGND	Low-noise signal ground reference	Separate from PGND to prevent switching noise coupling into feedback paths and sequencing timing circuits.
10 DRVN	VOFF LDO base-drive output	Open-drain P-FET drives base of external NPN pass transistor (e.g., MMBT3904) for -5 V to -20 V VOFF rail.
11 FBN	VOFF feedback input	Regulates to 0.203 V nominal; fault trips at 0.43 V falling - detects negative rail collapse during charge-pump startup.
12,13 PGND	Power ground return	Connected to source of internal boost FET; must be low-inductance plane tied to thermal pad for thermal and EMI performance.
14 VREF	Bandgap reference bypass	Requires 0.1 µF ceramic to SGND; stabilizes internal 1.215 V reference used by all feedback comparators.
15 CINT	Boost integrator mode select	Tied to VDD for P-mode (3% load regulation); connected to SGND via 4.7 nF for PI-mode (0.1% load regulation).
16 FBB	Boost feedback input	Regulates to 1.205 V nominal; fault threshold 0.9 V - primary control loop for AVDD accuracy and transient response.
18 EN	Enable input	Logic-high (>2.3 V) enables all regulators; floating or low disables - used for system-level power sequencing control.
19 VDD	Main supply input	Accepts 3–5.5 V; powers internal logic, gate drivers, and reference - must be decoupled with ≥10 µF ceramic near pin.
20 PG	Fault-protected gate drive output	Push-pull output drives external fault-protection FET (Q1); high when enabled, pulled low during fault or disable.

Key Features

Feature	Design Value
Integrated 2A boost FET	Eliminates external high-current MOSFET; reduces BOM count and layout area for compact LCD power modules.
Four independent fault-protected outputs	Each rail (VBOOST, VON, VOFF, VLOGIC) has dedicated comparator, latch, and fault timeout - prevents single-point failure propagation.
Capacitor-programmable sequencing	Single CDLY capacitor sets both startup order and fault recovery timing - simplifies timing validation vs. resistor-based solutions.
PI-mode boost regulation	0.1% load regulation (vs. 3% in P-mode) with 4.7 nF CINT - critical for stable AVDD under varying column driver loading.
Thermal shutdown at 140°C	Protects against sustained overload or poor heatsinking in sealed LCD enclosures; auto-restarts after cooldown and EN cycle.
Pb-free 4×4 QFN package	MDP0046 footprint with exposed thermal pad - enables >2 W dissipation on standard 2-layer PCBs per JEDEC JESD51-7 data.

Applications

LCD Monitor Power Supply	LCD-TV Panel Bias Generation
Use Scenario: 24-inch desktop LCD monitor requiring stable +15 V (VON), -5 V (VOFF), +2.5 V (VLOGIC), and +12 V (AVDD) for gate drivers and timing controller. IC Role / Device Role / Timing Role: EL7586ILZ serves as the primary multi-rail power manager, generating all four bias voltages from a single 5 V input with coordinated startup and fault isolation. Use Value: Reduces component count by eliminating four discrete DC/DC converters; 1% regulation ensures consistent pixel charging and eliminates vertical banding artifacts.	Use Scenario: 32-inch LCD-TV panel with dynamic backlight dimming, requiring fast-recovery VON/VOFF during frame-rate changes. IC Role / Device Role / Timing Role: EL7586ILZ regulates VON and VOFF using external charge pumps and controls sequencing to avoid panel flicker during power-up and mode transitions. Use Value: Programmable CDLY timing prevents VON/VOFF cross-conduction; PI-mode boost maintains AVDD within ±12 mV during 100 mA load steps.
Notebook Display Power	Industrial Medical LCD Display
Use Scenario: 15.6-inch notebook display subsystem operating from 3.3 V battery rail, needing low-quiescent VLOGIC (2.5 V/300 mA) and isolated VOFF (-5 V/20 mA). IC Role / Device Role / Timing Role: EL7586ILZ uses VDD = 3.3 V to generate VLOGIC directly and derives VON/VOFF from boosted AVDD, minimizing input current draw. Use Value: 750 µA shutdown current extends battery life; VLOGIC's immediate-enable behavior (via EL7586A variant) is not applicable - EL7586ILZ requires EN assertion before VLOGIC activation.	Use Scenario: Diagnostic ultrasound console with 19-inch medical-grade LCD requiring fail-safe power sequencing and long-term reliability. IC Role / Device Role / Timing Role: EL7586ILZ implements VLOGIC→VOFF→VBOOST→VON sequence with 50 ms fault timeout to meet IEC 60601-1 safety requirements for power fault containment. Use Value: Latch-off behavior prevents uncontrolled rail collapse; thermal shutdown at 140°C protects against enclosure overheating in fanless designs.

LCD Monitor Power Supply

LCD-TV Panel Bias Generation

Use Scenario: 24-inch desktop LCD monitor requiring stable +15 V (VON), -5 V (VOFF), +2.5 V (VLOGIC), and +12 V (AVDD) for gate drivers and timing controller.

IC Role / Device Role / Timing Role: EL7586ILZ serves as the primary multi-rail power manager, generating all four bias voltages from a single 5 V input with coordinated startup and fault isolation.

Use Value: Reduces component count by eliminating four discrete DC/DC converters; 1% regulation ensures consistent pixel charging and eliminates vertical banding artifacts.

Use Scenario: 32-inch LCD-TV panel with dynamic backlight dimming, requiring fast-recovery VON/VOFF during frame-rate changes.

IC Role / Device Role / Timing Role: EL7586ILZ regulates VON and VOFF using external charge pumps and controls sequencing to avoid panel flicker during power-up and mode transitions.

Use Value: Programmable CDLY timing prevents VON/VOFF cross-conduction; PI-mode boost maintains AVDD within ±12 mV during 100 mA load steps.

Notebook Display Power

Industrial Medical LCD Display

Use Scenario: 15.6-inch notebook display subsystem operating from 3.3 V battery rail, needing low-quiescent VLOGIC (2.5 V/300 mA) and isolated VOFF (-5 V/20 mA).

IC Role / Device Role / Timing Role: EL7586ILZ uses VDD = 3.3 V to generate VLOGIC directly and derives VON/VOFF from boosted AVDD, minimizing input current draw.

Use Value: 750 µA shutdown current extends battery life; VLOGIC's immediate-enable behavior (via EL7586A variant) is not applicable - EL7586ILZ requires EN assertion before VLOGIC activation.

Use Scenario: Diagnostic ultrasound console with 19-inch medical-grade LCD requiring fail-safe power sequencing and long-term reliability.

IC Role / Device Role / Timing Role: EL7586ILZ implements VLOGIC→VOFF→VBOOST→VON sequence with 50 ms fault timeout to meet IEC 60601-1 safety requirements for power fault containment.

Use Value: Latch-off behavior prevents uncontrolled rail collapse; thermal shutdown at 140°C protects against enclosure overheating in fanless designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar TFT-LCD power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
EL7586AILZ	VLOGIC output enabled immediately at power-up, independent of EN; no external transistor needed for VLOGIC-first sequencing.	Required where logic rail must be available before EN assertion (e.g., always-on controller wake-up circuits).	Select EL7586AILZ if VLOGIC must power up before EN is asserted; EL7586ILZ requires EN high for any output activation.
TPS65105RGER	TI device with integrated 1.5 A boost, dual positive LDOs, and single negative LDO; supports 2.7–5.5 V input but lacks programmable sequencing and PI-mode regulation.	Used in cost-sensitive consumer displays where ±1% regulation and sequenced startup are not mandatory.	Choose TPS65105RGER only if board space allows larger solution and sequencing flexibility is not required; EL7586ILZ offers tighter regulation and configurable timing.

Compared with EL7586AILZ, EL7586ILZ requires EN assertion to activate VLOGIC, making it suitable for systems with strict power-order dependencies. Against TPS65105RGER, EL7586ILZ delivers superior load regulation (0.1% vs. typical 2%) and programmable fault timeout, critical for high-reliability LCD panels.

Availability

EL7586ILZ is available at Aetrix Electronics and suitable for LCD monitors (15"+), LCD-TV (up to 40"+), and notebook displays (up to 16") requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for EL7586ILZ 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 (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, computing, and consumer electronics.

The EL7586ILZ belongs to Intersil's TFT-LCD power supply product line, designed specifically to integrate multiple bias rails, sequencing, and fault protection into a single QFN package for large-panel display systems.

FAQ

What is the key functional difference between EL7586ILZ and EL7586AILZ?

The EL7586ILZ requires the EN pin to be high before VLOGIC activates, while the EL7586AILZ enables VLOGIC immediately at power-up regardless of EN state. This makes EL7586ILZ appropriate for designs where logic rail activation must be synchronized with system enable, whereas EL7586AILZ suits applications needing instant logic power. Both share identical pinout, package, and all other electrical specifications.

Can EL7586ILZ support a 15 V VON output with 20 mA load?

Yes, EL7586ILZ supports VON up to +36 V with external charge pump and PNP pass transistor. At 20 mA load, its VON LDO controller (FBP feedback, DRVP drive) maintains ≤0.5% load regulation and trips fault at 0.87 V feedback - corresponding to ~25% undervoltage on a 15 V rail. Verified operation includes 15 V/20 mA in FN9210 Figure 11.

How does the CINT pin affect EL7586ILZ boost regulation performance?

When CINT is tied to VDD, EL7586ILZ operates in P-mode with 3% load regulation. When CINT connects to SGND via a 4.7 nF capacitor, it enters PI-mode, improving load regulation to 0.1% - essential for maintaining AVDD stability under dynamic column driver loads. This setting directly impacts ripple rejection and transient response in large-panel LCD applications.

Is EL7586ILZ still recommended for new designs?

No - the datasheet explicitly states "EL7586 NOT RECOMMENDED FOR NEW DESIGNS" and identifies EL7586AILZ as the recommended replacement. However, EL7586ILZ remains available for legacy design support, repair, and existing production continuity. New designs should evaluate EL7586AILZ for improved VLOGIC startup behavior and identical footprint compatibility.

What thermal performance can be expected from EL7586ILZ in a standard 2-layer PCB layout?

In a JEDEC JESD51-3 single-layer test board, EL7586ILZ achieves θJA = 150°C/W and dissipates up to 667 mW at 85°C ambient. With proper thermal pad soldering per JESD51-7, θJA improves to 40°C/W, enabling >2.5 W dissipation - sufficient for full-load operation in compact LCD power modules without forced air cooling.

EL7586ILZ Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 20-VFQFN Exposed Pad

Packaging:: Bulk

Product Status:: Obsolete

Applications:: Converter, TFT LCD

Voltage - Input:: 3V ~ 5V

Number of Outputs:: 4

Voltage - Output:: 5.5V ~ 20V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-QFN (4x4)

EL7586ILZ FAQ

1.How can I place an order for EL7586ILZ through Aetrix?

Please submit a Request for Quotation (RFQ) for EL7586ILZ 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 EL7586ILZ reliable?

The price and inventory of EL7586ILZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7586ILZ is usually 5 days.

3.What payment methods are accepted for EL7586ILZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7586ILZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for EL7586ILZ?

EL7586ILZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your EL7586ILZ 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 EL7586ILZ?

For technical support, including EL7586ILZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7586ILZ requirements.

6.How does Aetrix verify that EL7586ILZ is sourced from the original manufacturer or authorized distributors?

All EL7586ILZ 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 EL7586ILZ meets industry standards.

7.What is the process for return or replacement of EL7586ILZ?

All EL7586ILZ units undergo pre-shipment inspection (PSI). If there is an issue with EL7586ILZ, 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 EL7586ILZ part is unused and in its original packaging.

Return procedure for EL7586ILZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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