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

Renesas EL7586AILZ-T7

Name: EL7586AILZ-T7
Brand: Renesas
SKU: EL7586AILZ-T7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: EL7586AILZ-T7

Manufacturer:: Renesas

Category:: Special Purpose Regulators

Package:: 20-VFQFN Exposed Pad

Datasheet:: EL7586AILZ-T7.pdf

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

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Product details

Overview

EL7586AILZ-T7 from Intersil is a highly integrated TFT-LCD power supply IC featuring a 2A boost converter, two positive LDO controllers (VON and VLOGIC), and one negative LDO controller (VOFF), all in a single 20-lead 4×4 QFN package. It delivers precise 1% regulation across all outputs, supports 3–5V input, generates up to 20V boost output, and enables programmable start-up sequencing for LCD panel bias rails in large-format displays.

For engineers reviewing the EL7586AILZ-T7 datasheet, EL7586AILZ-T7 pinout, EL7586AILZ-T7 application, or EL7586AILZ-T7 equivalent, this device is critical for designing robust, fault-protected power architectures for LCD monitors (15"+), LCD TVs (up to 40"+), notebook displays (up to 16"), and industrial/medical LCD panels requiring tightly sequenced, regulated AVDD, VON, VOFF, and VLOGIC supplies.

Technical Context

The EL7586AILZ-T7 implements a fixed-frequency 1 MHz current-mode PWM boost regulator with integrated 2A N-channel FET, supporting both P-mode and PI-mode operation via CINT pin configuration. Its three independent LDO controllers-VON (1.2V feedback), VOFF (0.2V feedback), and VLOGIC (1.2V feedback)-drive external pass transistors with transconductance amplifiers (GMP = 50 mS, GMN = 50 mS, GML = 200 mS) and built-in fault comparators.

Start-up sequencing is programmable via CDLY capacitor: EL7586AILZ-T7 enables VLOGIC immediately at power-on (independent of EN), then sequences VOFF, VBOOST, and VON with configurable delays (tDEL1 = 10 ms, tDEL2 = 17 ms at CDLY = 0.22 µF). All four channels feature latch-off fault protection, thermal shutdown (140°C), and soft-start (2 ms).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3 V to 5.5 V - compatible with standard 3.3 V and 5 V system rails without level-shifting.
Boost Output Range	5.5 V to 20 V - supports AVDD generation for large-panel LCD row/column drivers.
Regulation Accuracy	±1% on all outputs - ensures stable gate driver biasing and logic supply integrity under load variation.
Oscillator Frequency	900–1100 kHz - enables use of compact 6.8 µH inductors and low-ESR ceramic capacitors.
Operating Temperature	−40°C to +85°C - qualified for commercial and industrial LCD display environments.
Fault Response	Latch-off until EN or VDD cycle - prevents uncontrolled re-attempt after overvoltage, overcurrent, or thermal fault.
Quiescent Current	1.7–2.5 mA (enabled), 750–900 µA (disabled) - minimizes standby power in always-on display systems.

Pinout & Package

EL7586AILZ-T7 is housed in a thermally enhanced 20-lead 4 mm × 4 mm QFN package with exposed thermal pad (MDP0046), RoHS-compliant Pb-free plus anneal finish, MSL3 rated for lead-free reflow.

Pin/Terminal	Circuit Role	Design Meaning
1 CDLY	Sequencing timing capacitor node	Sets startup delay (30 ms typical) and fault timeout (50 ms) via external capacitor (10–220 nF).
2 DELB	Open-drain VBOOST delay gate drive	Sinks 50 µA initially, then ~1.2 mA to control external P-FET for delayed AVDD ramp.
3,4 LX1/LX2	Internal boost FET drain	LX1 is active; LX2 is no-connect on EL7586A - connects to external boost inductor and flyback diode.
5 DRVP	VON LDO base drive output	Open-drain N-FET drives external PNP pass transistor (e.g., FMMT549) for +15 V to +36 V output.
6 FBP	VON feedback input	Regulates to 1.205 V ±1.5%; fault trips at 0.87 V falling - monitors VON rail integrity.
7 DRVL	VLOGIC LDO base drive output	Open-drain N-FET drives external PNP; 16 mA max sink supports ≥160 mA VLOGIC output.
8 FBL	VLOGIC feedback input	Regulates to 1.205 V ±1.5%; fault trips at 0.87 V falling - ensures logic supply stability.
9,17 SGND	Low-noise signal ground	Separate from PGND to prevent switching noise coupling into feedback paths.
10 DRVN	VOFF LDO base drive output	Open-drain P-FET drives external NPN pass transistor for −5 V to −20 V output.
11 FBN	VOFF feedback input	Regulates to 0.203 V ±15%; fault trips at 0.43 V falling - detects negative rail undervoltage.
12,13 PGND	Power ground return	Connects to source of internal boost FET; must be tied to thermal pad for thermal performance.
14 VREF	Bandgap reference bypass	Requires 0.1 µF ceramic cap to SGND - stabilizes internal 1.215 V reference for all LDOs.
15 CINT	Boost integrator output	Connect to VDD for P-mode (3% load regulation); to SGND via 4.7 nF for PI-mode (0.1% load regulation).
16 FBB	Boost feedback input	Regulates to 1.205 V ±1.5%; sets AVDD via resistor divider - fault trips at 0.9 V falling.
18 EN	Enable input	Active-high logic interface (VHI = 2.3 V min); floating disables device - supports system-level power sequencing.
19 VDD	Main supply input	Accepts 3–5.5 V; powers internal circuitry and gate drivers - decoupling required per layout guidelines.
20 PG	Fault protection gate drive	Push-pull output controls external fault switch (Q1); high during normal operation, pulled low on fault.

Key Features

Feature	Design Value
Integrated 2A boost FET	Eliminates external high-current MOSFET, reducing BOM count and PCB area for AVDD generation.
VLOGIC immediate enable	VLOGIC powers up at VDD application - independent of EN, enabling early logic initialization in LCD timing chains.
Programmable sequencing	CDLY capacitor configures delay between VLOGIC → VOFF → VBOOST → VON - prevents latch-up in panel drivers.
Four-channel fault protection	Dedicated comparators monitor FBB, FBP, FBL, FBN; latch-off response prevents cascading failure in multi-rail systems.
Thermal shutdown	140°C junction threshold with hysteresis - protects against sustained overload or poor heatsinking in sealed enclosures.
Pb-free + anneal packaging	RoHS-compliant matte tin termination - compatible with SnPb and Pb-free soldering processes per J-STD-020.

Applications

Large-Format LCD Monitor	LCD Television Panel
Use Scenario: Powering 24"–32" desktop LCD monitors with dual-gate driver architecture requiring isolated AVDD, VON, VOFF, and VLOGIC rails. IC Role / Device Role / Timing Role: Central multi-output power manager generating sequenced, regulated bias voltages for row/column drivers and timing controller logic. Use Value: Eliminates discrete DC/DC + LDO combinations; reduces component count by >40% while ensuring <1% cross-regulation error across all rails.	Use Scenario: Supplying 32"–46" LCD TV panels where EMI-sensitive audio/video subsystems demand ultra-low noise and tight transient response. IC Role / Device Role / Timing Role: High-efficiency boost + linear-regulator controller delivering clean, sequenced VON (+24 V), VOFF (−10 V), and VLOGIC (3.3 V) with <2 ms soft-start. Use Value: 92% peak boost efficiency at 200 mA load minimizes thermal stress; 1.2 mS fault detection prevents panel damage during power-up surges.
Notebook Display Module	Industrial Medical LCD
Use Scenario: Enabling slim-profile 15.6" notebook displays with space-constrained power delivery and strict thermal limits. IC Role / Device Role / Timing Role: Single-chip solution providing AVDD (12 V), VON (15 V), VOFF (−5 V), and VLOGIC (2.5 V) from 3.3 V or 5 V battery rail. Use Value: 4×4 mm QFN footprint saves >60 mm² vs. discrete solution; 750 µA shutdown current extends battery runtime.	Use Scenario: Powering diagnostic ultrasound or surgical display panels requiring long-term reliability and fault resilience in mission-critical settings. IC Role / Device Role / Timing Role: Fault-latched multi-rail controller with thermal shutdown and 100% production-tested sequencing - meets IEC 60601-1 safety margins. Use Value: Latch-off behavior prevents uncontrolled restart after overtemperature event; -40°C to +85°C rating ensures operation in sterilized environments.

Large-Format LCD Monitor

LCD Television Panel

Use Scenario: Powering 24"–32" desktop LCD monitors with dual-gate driver architecture requiring isolated AVDD, VON, VOFF, and VLOGIC rails.

IC Role / Device Role / Timing Role: Central multi-output power manager generating sequenced, regulated bias voltages for row/column drivers and timing controller logic.

Use Value: Eliminates discrete DC/DC + LDO combinations; reduces component count by >40% while ensuring <1% cross-regulation error across all rails.

Use Scenario: Supplying 32"–46" LCD TV panels where EMI-sensitive audio/video subsystems demand ultra-low noise and tight transient response.

IC Role / Device Role / Timing Role: High-efficiency boost + linear-regulator controller delivering clean, sequenced VON (+24 V), VOFF (−10 V), and VLOGIC (3.3 V) with <2 ms soft-start.

Use Value: 92% peak boost efficiency at 200 mA load minimizes thermal stress; 1.2 mS fault detection prevents panel damage during power-up surges.

Notebook Display Module

Industrial Medical LCD

Use Scenario: Enabling slim-profile 15.6" notebook displays with space-constrained power delivery and strict thermal limits.

IC Role / Device Role / Timing Role: Single-chip solution providing AVDD (12 V), VON (15 V), VOFF (−5 V), and VLOGIC (2.5 V) from 3.3 V or 5 V battery rail.

Use Value: 4×4 mm QFN footprint saves >60 mm² vs. discrete solution; 750 µA shutdown current extends battery runtime.

Use Scenario: Powering diagnostic ultrasound or surgical display panels requiring long-term reliability and fault resilience in mission-critical settings.

IC Role / Device Role / Timing Role: Fault-latched multi-rail controller with thermal shutdown and 100% production-tested sequencing - meets IEC 60601-1 safety margins.

Use Value: Latch-off behavior prevents uncontrolled restart after overtemperature event; -40°C to +85°C rating ensures operation in sterilized environments.

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
EL7586ILZ-T7	Legacy version with EN-dependent VLOGIC enable and different startup sequence (VBOOST/VLOGIC → VOFF → VON); lacks immediate VLOGIC turn-on.	Requires external transistor for VLOGIC-first sequencing; less suitable for fast-boot LCD controllers needing early logic power.	Select EL7586ILZ-T7 only if redesigning legacy systems already using EL7586-based layouts and timing constraints.
RTQ2132B-QA	Single-chip 3-output LCD PMIC (AVDD, VON, VOFF) with integrated charge pumps; no VLOGIC LDO; uses I²C for dynamic voltage scaling.	Lacks dedicated VLOGIC regulator - requires separate LDO for logic rail; supports programmable AVDD/VON/VLOGIC via register writes.	Choose RTQ2132B-QA when digital control and voltage flexibility outweigh need for analog VLOGIC integration and deterministic sequencing.

Compared with EL7586ILZ-T7, EL7586AILZ-T7 provides faster system boot via immediate VLOGIC enable and simplified layout; versus RTQ2132B-QA, it offers higher integration for logic rail power but less configurability - making it optimal for cost-sensitive, high-volume LCD monitor designs.

Availability

EL7586AILZ-T7 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, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for EL7586AILZ-T7 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 EL7586A product line was designed specifically for TFT-LCD panel power systems, integrating boost conversion and multiple LDO controllers to replace discrete solutions in large-format display power supplies.

FAQ

What is the key functional difference between EL7586AILZ-T7 and EL7586ILZ-T7?

The EL7586AILZ-T7 features immediate VLOGIC enable at power-on - independent of the EN pin - whereas EL7586ILZ-T7 requires EN assertion before VLOGIC activates. This allows EL7586AILZ-T7 to support faster system boot in LCD timing controllers that require early logic rail availability. Both share identical pinout, package, and core regulation specs.

How does the EL7586AILZ-T7 implement fault protection across its four output channels?

The EL7586AILZ-T7 monitors each output via dedicated feedback pins (FBB for boost, FBP for VON, FBL for VLOGIC, FBN for VOFF) with individual comparators. When any output falls below its fault threshold (e.g., 0.87 V for FBP/FBL, 0.43 V for FBN, 0.9 V for FBB), the device latches off all channels until VDD or EN is cycled - preventing uncontrolled recovery and protecting downstream LCD panel circuitry.

Can the EL7586AILZ-T7 operate in both P-mode and PI-mode for the boost converter, and how is mode selection performed?

Yes, EL7586AILZ-T7 supports both modes: connect CINT (Pin 15) directly to VDD for P-mode (3% load regulation), or connect it to SGND via a 4.7 nF capacitor for PI-mode (0.1% load regulation). PI-mode improves load regulation and transient response but requires careful compensation to maintain loop stability - especially at high output currents.

What is the purpose of the DELB pin on the EL7586AILZ-T7, and how is it used in a typical application?

The DELB pin (Pin 2) is an open-drain output that controls an external P-channel FET to delay the AVDD rail rise time, allowing VOFF and VBOOST to stabilize first. During startup, DELB sinks 50 µA to gradually turn on the FET; if it fails to drop below 0.6 V within the CDLY-set timeout, a fault is triggered. This prevents premature charging of panel capacitance and reduces inrush current.

Does the EL7586AILZ-T7 require external pass transistors for its LDO controllers, and why?

Yes, EL7586AILZ-T7 requires external pass transistors: a PNP for VON and VLOGIC, and an NPN for VOFF. The IC provides only the high-bandwidth transconductance amplifier (GML = 200 mS for VLOGIC), base drive (DRVP/DRVL/DRVN), and feedback comparator - external transistors handle high-voltage, high-current regulation, enabling flexible output ranges (+15–36 V for VON, −5–−20 V for VOFF, +1.3–VDD−0.2 V for VLOGIC) beyond monolithic IC limits.

EL7586AILZ-T7 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 20-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

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)

EL7586AILZ-T7 FAQ

1.How can I place an order for EL7586AILZ-T7 through Aetrix?

Please submit a Request for Quotation (RFQ) for EL7586AILZ-T7 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 EL7586AILZ-T7 reliable?

The price and inventory of EL7586AILZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7586AILZ-T7 is usually 5 days.

3.What payment methods are accepted for EL7586AILZ-T7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7586AILZ-T7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for EL7586AILZ-T7?

EL7586AILZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your EL7586AILZ-T7 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 EL7586AILZ-T7?

For technical support, including EL7586AILZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7586AILZ-T7 requirements.

6.How does Aetrix verify that EL7586AILZ-T7 is sourced from the original manufacturer or authorized distributors?

All EL7586AILZ-T7 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 EL7586AILZ-T7 meets industry standards.

7.What is the process for return or replacement of EL7586AILZ-T7?

All EL7586AILZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with EL7586AILZ-T7, 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 EL7586AILZ-T7 part is unused and in its original packaging.

Return procedure for EL7586AILZ-T7:

1.Submit a request within 90 days.

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

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