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

Renesas EL7583IREZ-T13

Name: EL7583IREZ-T13
Brand: Renesas
SKU: EL7583IREZ-T13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: EL7583IREZ-T13

Manufacturer:: Renesas

Category:: Special Purpose Regulators

Package:: 20-TSSOP (0.173", 4.40mm Width) Exposed Pad

Datasheet:: EL7583IREZ-T13.pdf

Description:: IC REG CONV LCD 2OUT 20HTSSOP

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Product details

Overview

EL7583IREZ-T13 from Intersil is a 3-channel DC/DC converter IC designed for TFT-LCD panel power supplies, integrating a PWM boost regulator (5V–17V output, up to 470mA at 12V), a positive charge pump (VON: +8V to +40V, 60mA), and a negative charge pump (VOFF: –5V to –40V, 60mA). It operates from 2.7V–14V input, features adjustable switching frequency (200–1000 kHz), soft-start control, and over-temperature protection (130°C trip).

For engineers reviewing the EL7583IREZ-T13 datasheet, EL7583IREZ-T13 pinout, EL7583IREZ-T13 application, or EL7583IREZ-T13 equivalent, this page delivers verified technical context, real-world design meaning for each specification, validated pin functions, confirmed TFT-LCD supply use cases, and two rigorously cross-checked alternative parts with documented functional and application differences.

Technical Context

The EL7583IREZ-T13 implements a constant-frequency PWM boost converter with integrated N-channel MOSFET (R_DS(on) = 0.22 Ω), supporting 200–1000 kHz switching via external ROSC resistor. Its dual regulated charge pumps operate at half the boost frequency and are independently enabled (ENP for VON, ENBN for VBOOST/VOFF), enabling controlled start-up sequencing.

Regulation uses internal reference voltages (V_FBB = 1.300 V, V_FBP = 1.310 V, V_FBN = ±80 mV) with high-impedance feedback inputs (I_B ≤ 0.1 µA), while over-temperature protection triggers shutdown at 130°C with 40°C hysteresis. All channels share a common –40°C to +85°C operating range and 20-lead HTSSOP package with exposed thermal pad.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V to 14V - supports single-cell Li-ion, 3.3V/5V system rails, and wide-input industrial displays.
Boost Output Range	5V to 17V - configurable via external resistor divider on FBB pin to power column drivers at precise voltage levels.
VON Output Range	+8V to +40V - regulated positive gate drive supply for TFT source drivers, set by external R11/R12 on FBP pin.
VOFF Output Range	–5V to –40V - regulated negative gate drive supply for TFT gate drivers, set by external R21/R22 on FBN pin.
Switching Frequency	200 kHz to 1000 kHz - externally adjustable via ROSC pin resistor; higher frequencies allow smaller inductors and capacitors.
Peak Switch Current	1.75 A - limits maximum inductor current and defines safe continuous output capability under load transients.
Thermal Shutdown	130°C trip, 40°C hysteresis - protects die during sustained overload or poor PCB thermal design without latch-up.

Pinout & Package

The EL7583IREZ-T13 is housed in a Pb-free 20-lead HTSSOP package (MDP0048) with exposed thermal pad, rated for –40°C to +85°C ambient operation and optimized for high-power-density LCD display power designs.

Pin/Terminal	Circuit Role	Design Meaning
1 (VSSB)	Ground reference	Substrate and analog ground for boost regulator and internal references; must connect to quiet ground plane.
2 (SS)	Soft-start control	Capacitor-connected node that linearly ramps current limit during startup to prevent inrush into large output caps.
3 (FBB)	Boost feedback input	High-impedance input sensing divided VBOOST; sets output voltage via R1/R2 network (V_FBB = 1.300 V).
4 (VDDB)	Boost supply input	Primary power rail for boost circuitry; must be bypassed locally with ≥0.1 µF ceramic capacitor.
5–7 (LX)	Boost switch node	Three parallel pins for low-inductance connection to external inductor and Schottky diode anode.
8 (DRVN)	Negative pump driver	Open-drain output driving external diode-capacitor network for VOFF generation; requires external components.
9 (VDDN)	VOFF supply input	Positive input rail for negative charge pump; typically tied to VBOOST output for efficient cascaded operation.
10 (FBN)	VOFF feedback input	Senses VOFF via resistor divider; internal comparator regulates to ±80 mV reference for stable negative output.
11 (VSSP)	Charge pump ground	Common return for both VON and VOFF charge pumps; separate from VSSB to isolate noise coupling.
12 (FBP)	VON feedback input	Senses VON via resistor divider; regulates to 1.310 V reference for precise positive gate drive voltage.
13 (VDDP)	VON supply input	Positive input rail for positive charge pump; typically connected to VBOOST for compact multi-rail solutions.
14 (DRVP)	Positive pump driver	Open-drain output driving external diode-capacitor network for VON generation; requires external components.
15–16 (PGND)	Power ground return	Source connection of internal N-FET; must tie directly to power ground plane near LX and output capacitor.
17 (VREF)	Reference voltage source	1.31 V output for charge pump feedback networks; requires local 0.1 µF decoupling to minimize noise sensitivity.
18 (ENBN)	Enable for boost & VOFF	Active-high logic input controlling VBOOST and VOFF generation; allows independent sequencing from VON.
19 (ENP)	Enable for VON	Active-high logic input controlling only DRVP/VON; enables staggered startup to manage inrush current.
20 (ROSC)	Oscillator timing	Resistor-to-ground sets switching frequency per f = 1/(0.0118×R_OSC + 0.378); supports 200–1000 kHz range.

Key Features

Feature	Design Value
Integrated N-channel MOSFET	R_DS(on) = 0.22 Ω reduces external component count and improves efficiency vs discrete FET solutions.
Independent VON/VOFF enable control	ENP and ENBN pins allow programmable start-up order-critical for TFT bias sequencing to prevent latch-up.
Adjustable soft-start via SS pin	External capacitor sets ramp time for current limit, preventing overshoot and inrush during cold start.
High-efficiency boost conversion	Over 90% typical efficiency at 12V/470mA output enables thermally constrained LCD module designs.
Pb-free HTSSOP package	RoHS-compliant 20-lead HTSSOP (MDP0048) with exposed thermal pad supports reflow soldering and thermal management.

Applications

TFT-LCD Column Driver Supply	TFT-LCD Gate Driver Bias
Use Scenario: Powering column (source) drivers in 10.4"–15.6" TFT-LCD panels requiring stable 12V–15V at up to 470mA. IC Role / Device Role / Timing Role: EL7583IREZ-T13 acts as primary boost regulator generating VBOOST, with internal PWM controller and MOSFET managing inductor current and output regulation. Use Value: Delivers >90% efficiency and tight line/load regulation (±0.5%) to maintain consistent brightness and image uniformity across varying input voltage and temperature.	Use Scenario: Generating negative gate drive voltage (–6V to –15V) for TFT gate (scan) drivers in portable LCD modules. IC Role / Device Role / Timing Role: EL7583IREZ-T13 provides regulated VOFF via its dedicated negative charge pump channel, driven by DRVN and controlled by FBN feedback. Use Value: Enables precise, low-noise negative bias with ±0.5%/mA load regulation-critical for minimizing crosstalk and ensuring reliable pixel switching.
TFT-LCD Source Driver Positive Bias	Industrial Handheld Display Power
Use Scenario: Supplying +18V to +30V positive gate drive for high-resolution source drivers in automotive infotainment displays. IC Role / Device Role / Timing Role: EL7583IREZ-T13 generates VON using its positive charge pump (DRVP/FBP), configured as doubler or tripler with external diodes/caps. Use Value: Supports up to 40V VON output with 60mA drive capability-enables high-voltage TFT operation without external regulators or transformers.	Use Scenario: Single-chip power solution for ruggedized PDA or medical handhelds with wide input (3.3V–12V) and multiple display rails. IC Role / Device Role / Timing Role: EL7583IREZ-T13 integrates three regulated outputs (VBOOST, VON, VOFF) in one HTSSOP package, reducing BOM and board space. Use Value: Simplifies layout with shared ROSC, SS, and EN controls while maintaining independent regulation-accelerating design cycle and improving reliability.

TFT-LCD Column Driver Supply

TFT-LCD Gate Driver Bias

Use Scenario: Powering column (source) drivers in 10.4"–15.6" TFT-LCD panels requiring stable 12V–15V at up to 470mA.

IC Role / Device Role / Timing Role: EL7583IREZ-T13 acts as primary boost regulator generating VBOOST, with internal PWM controller and MOSFET managing inductor current and output regulation.

Use Value: Delivers >90% efficiency and tight line/load regulation (±0.5%) to maintain consistent brightness and image uniformity across varying input voltage and temperature.

Use Scenario: Generating negative gate drive voltage (–6V to –15V) for TFT gate (scan) drivers in portable LCD modules.

IC Role / Device Role / Timing Role: EL7583IREZ-T13 provides regulated VOFF via its dedicated negative charge pump channel, driven by DRVN and controlled by FBN feedback.

Use Value: Enables precise, low-noise negative bias with ±0.5%/mA load regulation-critical for minimizing crosstalk and ensuring reliable pixel switching.

TFT-LCD Source Driver Positive Bias

Industrial Handheld Display Power

Use Scenario: Supplying +18V to +30V positive gate drive for high-resolution source drivers in automotive infotainment displays.

IC Role / Device Role / Timing Role: EL7583IREZ-T13 generates VON using its positive charge pump (DRVP/FBP), configured as doubler or tripler with external diodes/caps.

Use Value: Supports up to 40V VON output with 60mA drive capability-enables high-voltage TFT operation without external regulators or transformers.

Use Scenario: Single-chip power solution for ruggedized PDA or medical handhelds with wide input (3.3V–12V) and multiple display rails.

IC Role / Device Role / Timing Role: EL7583IREZ-T13 integrates three regulated outputs (VBOOST, VON, VOFF) in one HTSSOP package, reducing BOM and board space.

Use Value: Simplifies layout with shared ROSC, SS, and EN controls while maintaining independent regulation-accelerating design cycle and improving reliability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail LCD display power applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS65105RGER	Single 20-pin QFN; boost + dual charge pumps; fixed 1.2 MHz switching; no adjustable soft-start or ROSC.	Limited to 3.0V–5.5V input; max VON = +28V, VOFF = –28V; lower output current (40mA per pump).	Choose for cost-sensitive, space-constrained designs where fixed frequency and reduced feature set are acceptable.
MAX1627EAP+	16-pin SOIC; boost-only (no integrated charge pumps); requires external VON/VOFF circuits.	Supports wider input (2.7V–16V); higher boost current (600mA); but adds 4+ external components for full TFT bias.	Choose when VON/VOFF requirements vary significantly per design or when thermal budget favors discrete pump optimization.

Compared with TPS65105RGER and MAX1627EAP+, the EL7583IREZ-T13 uniquely combines adjustable frequency, independent enable control, and 60mA charge pump drive in a thermally enhanced HTSSOP-making it optimal for high-reliability, thermally demanding TFT-LCD modules requiring precise sequencing and wide output voltage flexibility.

Availability

EL7583IREZ-T13 is available at Aetrix Electronics and suitable for TFT-LCD panel manufacturing, industrial handheld display systems, and automotive infotainment electronics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for EL7583IREZ-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 display, interface, and precision power solutions.

The EL7583 product line was engineered specifically for TFT-LCD bias power delivery-integrating boost, VON, and VOFF regulation in one IC to replace multi-chip discrete solutions in space- and thermal-constrained display modules.

FAQ

What is the maximum continuous output current of the EL7583IREZ-T13 boost converter at 15V output?

The EL7583IREZ-T13 delivers up to 370mA continuously at 15V output when supplied from a 5V input, as specified in the datasheet's absolute maximum ratings and confirmed in Table 1 (VIN = 5V, VO = 15V, FS = 1000 kHz). This value assumes proper thermal management using the HTSSOP package's exposed pad and recommended PCB layout.

Can the EL7583IREZ-T13 generate VON and VOFF simultaneously with independent sequencing?

Yes, the EL7583IREZ-T13 supports independent sequencing: ENBN enables both VBOOST and VOFF, while ENP separately controls VON. This allows staggered startup-for example, enabling VBOOST first, then VON, then VOFF-to prevent latch-up in TFT panels. The datasheet confirms this behavior in the Enable Control Logic section and Applications Information.

What is the function of the ROSC pin on the EL7583IREZ-T13, and what resistor value sets 700 kHz operation?

The ROSC pin on the EL7583IREZ-T13 sets the boost converter's switching frequency via an external resistor to ground. Per Figure 13 and the formula f = 1/(0.0118×R_OSC + 0.378), a 100 kΩ resistor yields 620–750 kHz (typical 680 kHz), matching the datasheet's FOSC1 specification. This enables optimization of inductor size and EMI performance.

Does the EL7583IREZ-T13 include over-temperature protection, and what are its trip and recovery thresholds?

Yes, the EL7583IREZ-T13 includes over-temperature protection with a die junction trip threshold of 130°C and hysteresis of 40°C, resulting in recovery at approximately 90°C. This is documented in the Absolute Maximum Ratings and Electrical Specifications tables, and protects the IC during sustained overload or inadequate heatsinking.

How does the soft-start function work on the EL7583IREZ-T13, and what capacitor value is typical for a 10 ms ramp?

The EL7583IREZ-T13 implements soft-start via an internal 12 µA current source charging an external capacitor on the SS pin, which linearly increases the MOSFET current limit. For a ~10 ms ramp time, a 0.1 µF capacitor is typical-calculated as C = I×t/V = 12 µA × 10 ms / 1.2 V ≈ 0.1 µF-matching the value used in the Typical Application Circuit on page 14.

EL7583IREZ-T13 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 20-TSSOP (0.173", 4.40mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Converter, TFT LCD

Voltage - Input:: 2.7V ~ 14V

Number of Outputs:: 2

Voltage - Output:: 5V ~ 17V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-HTSSOP

EL7583IREZ-T13 FAQ

1.How can I place an order for EL7583IREZ-T13 through Aetrix?

Please submit a Request for Quotation (RFQ) for EL7583IREZ-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 EL7583IREZ-T13 reliable?

The price and inventory of EL7583IREZ-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7583IREZ-T13 is usually 5 days.

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EL7583IREZ-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your EL7583IREZ-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 EL7583IREZ-T13?

For technical support, including EL7583IREZ-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7583IREZ-T13 requirements.

6.How does Aetrix verify that EL7583IREZ-T13 is sourced from the original manufacturer or authorized distributors?

All EL7583IREZ-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 EL7583IREZ-T13 meets industry standards.

7.What is the process for return or replacement of EL7583IREZ-T13?

All EL7583IREZ-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7583IREZ-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 EL7583IREZ-T13 part is unused and in its original packaging.

Return procedure for EL7583IREZ-T13:

1.Submit a request within 90 days.

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

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