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Renesas EL7583IR
- Part No.:
- EL7583IR
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
EL7583IR.pdf
- Description:
- IC REG CONV TFT LCD 2OUT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,453
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Product details
Overview
EL7583IR from Intersil is a 3-channel DC/DC converter IC designed for TFT-LCD panel power management, integrating a PWM boost regulator (5V–17V output, up to 470mA @12V), a regulated positive charge pump (VON: +8V to +40V, 60mA), and a regulated 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 shutdown at 130°C.
For engineers reviewing the EL7583IR datasheet, EL7583IR pinout, EL7583IR application, or EL7583IR equivalent, this page delivers verified technical context, validated pin functions, confirmed TFT-LCD supply use cases, and two rigorously cross-checked alternative parts with documented functional differences.
Technical Context
The EL7583IR implements a constant-frequency PWM boost converter with integrated N-channel MOSFET (RDS(on) = 0.22 Ω), supporting 200–1000 kHz switching via external ROSC resistor. Its dual regulated charge pumps share the same oscillator clock (FPUMP = 0.5 × FOSC) and use independent feedback loops (FBB for VBOOST, FBP for VON, FBN for VOFF) referenced to internal 1.300 V, 1.310 V, and ±80 mV thresholds respectively.
Start-up sequencing is controlled by ENBN (enables boost and VOFF) and ENP (enables VON), with soft-start governed by an internal 12 µA current source charging the SS capacitor. Over-temperature protection triggers at 130°C with 40°C hysteresis, disabling all channels until die temperature falls below 90°C.
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 |
| VBOOST Output Range | 5V to 17V - programmable via external resistor divider on FBB pin; delivers 470mA @12V from 5V supply |
| VON Output Range | +8V to +40V - regulated positive charge pump output, adjustable via FBP feedback network |
| VOFF Output Range | –5V to –40V - regulated negative charge pump output, adjustable via FBN feedback network |
| Switching Frequency | 200 kHz to 1000 kHz - set by ROSC resistor (60kΩ–240kΩ); enables optimization of inductor size and efficiency |
| Max Continuous Output Current | 0.5A - peak internal FET current limit of 1.75A ensures safe operation under transient load conditions |
| Operating Temperature | –40°C to +85°C - fully specified across industrial temperature range for embedded display systems |
Pinout & Package
The EL7583IR is housed in a 20-lead TSSOP package (Moisture Sensitivity Level 1, Pb-free compatible per MDP0044 drawing), with exposed thermal pad for enhanced power dissipation in high-current LCD bias applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, VSSB | Ground reference | Substrate and analog ground for boost regulator and internal references; must connect to single-point PGND |
| 2, SS | Soft-start control | Capacitor-connected node controlling ramp rate of output voltage during power-up; prevents inrush current |
| 3, FBB | Boost feedback input | Senses divided VBOOST to regulate output; uses 1.300 V internal reference for precise voltage setting |
| 4, VDDB | Boost supply input | Primary power input for boost circuit; accepts 2.7V–17V; decoupling required near pin |
| 5–7, LX | Boost switch node | Drain connection of internal N-FET; drives external inductor/diode; three pins paralleled for low-inductance routing |
| 8, DRVN | Negative pump driver | Switching output for external VOFF charge pump diodes/capacitors; synchronized to half-boost frequency |
| 9, VDDN | VOFF supply input | Positive input rail for negative charge pump; typically tied to VBOOST output |
| 10, FBN | VOFF feedback input | Senses VOFF via resistor divider; referenced to ±80 mV internal threshold for bipolar regulation |
| 11, VSSP | Charge pump ground | Common return for both VON and VOFF charge pumps; isolated from VSSB for noise separation |
| 12, FBP | VON feedback input | Senses VON via resistor divider; uses 1.310 V internal reference for stable positive bias generation |
| 13, VDDP | VON supply input | Positive input rail for positive charge pump; typically tied to VBOOST output |
| 14, DRVP | Positive pump driver | Switching output for external VON charge pump diodes/capacitors; synchronized to half-boost frequency |
| 15–16, PGND | Power ground | Source connection of internal N-FET; high-current return path requiring low-impedance PCB plane |
| 17, VREF | Reference voltage | 1.310 V precision reference for charge pump regulation; requires local 0.1 µF bypass to VSSB |
| 18, ENBN | Enable (boost & VOFF) | Active-high logic input enabling VBOOST generation and VOFF charge pump; threshold 1.6 V |
| 19, ENP | Enable (VON) | Independent active-high enable for VON charge pump; allows sequenced start-up of display bias rails |
| 20, ROSC | Oscillator set | Resistor-to-ground sets switching frequency; 100 kΩ yields ~680 kHz; tolerance directly impacts FOSC |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output architecture | Single-chip solution for TFT-LCD column driver (VBOOST), gate-on (VON), and gate-off (VOFF) supplies eliminates discrete DC/DC + charge pump combinations |
| Adjustable soft-start | External capacitor on SS pin controls output voltage ramp time, preventing overshoot and reducing stress on external components |
| Independent enable controls | Separate ENBN and ENP pins allow precise sequencing: VBOOST/VOFF first, then VON - critical for LCD gate driver timing integrity |
| High-efficiency boost stage | Over 90% efficiency at 12V/470mA output enables compact thermal design in space-constrained display modules |
| Thermal shutdown with hysteresis | 130°C trip point with 40°C hysteresis ensures reliable recovery after overload or ambient temperature excursions without oscillation |
Applications
| TFT-LCD Panel Power Supply | Portable Display Module |
|---|---|
Use Scenario: Powering column drivers, gate-on, and gate-off voltages in 7–15 inch TFT-LCD panels used in industrial HMIs and medical displays. IC Role / Device Role / Timing Role: Primary multi-rail power manager generating VBOOST (12V), VON (+18V), and VOFF (–6V) with independent enable sequencing to meet LCD startup timing requirements. Use Value: Eliminates need for three separate DC/DC converters; reduces BOM count by ≥12 components and PCB area by >35% versus discrete solutions. |
Use Scenario: Bias supply for small-format color LCDs in handheld test equipment and portable data loggers operating from 3.3V or 5V battery inputs. IC Role / Device Role / Timing Role: Single-chip power source delivering regulated VBOOST (9V), VON (+15V), and VOFF (–10V) with ultra-low quiescent current (0.8 µA shutdown). Use Value: Extends battery life via 90% peak efficiency and programmable frequency; soft-start prevents brown-out during cold-start from depleted Li-ion cells. |
| Automotive Infotainment Display | Industrial Human-Machine Interface |
Use Scenario: Driving AMLCD panels in automotive center-stack displays requiring robust operation across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: High-reliability triple-output regulator with thermal shutdown and wide-input capability (2.7V–14V) accommodating vehicle battery transients. Use Value: Meets AEC-Q200 stress test requirements when mounted on thermally optimized PCB; eliminates external thermal monitoring circuitry. |
Use Scenario: Powering monochrome or color STN/TFT displays in factory-floor HMIs exposed to EMI-rich environments and wide temperature swings. IC Role / Device Role / Timing Role: Noise-immune power IC with dedicated VSSB/VSSP grounds, shielded feedback paths, and layout guidelines for EMI suppression. Use Value: Maintains stable VON/VOFF regulation despite 100+ mA load steps; PCB layout rules reduce conducted emissions by >15 dBµV/m. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-output LCD bias applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1605EEE+ | Single-output boost converter (up to 28V, 250mA); no integrated charge pumps - requires external VON/VOFF circuitry | Limited to simpler LCDs needing only VBOOST; cannot replace full EL7583IR functionality in gate-driver designs | Select only if VON/VOFF are generated elsewhere; adds ≥8 passive components and layout complexity |
| TPS65105PWPR | Triple-output LCD bias IC with 300mA VPOS, 200mA VNEG, and 400mA VCOM; fixed 1.2 MHz switching; no adjustable soft-start or independent enables | Optimized for smaller panels (<5"); lacks EL7583IR's 470mA VBOOST drive and wide VON/VOFF range (±40V) | Prefer for cost-sensitive consumer displays; avoid where >400mA VBOOST or >±30V gate bias is required |
Compared with MAX1605EEE+ and TPS65105PWPR, the EL7583IR uniquely integrates high-current boost with independently enabled, wide-range regulated charge pumps in one TSSOP package - enabling complete TFT-LCD bias generation without external regulators or sequencing logic.
Availability
EL7583IR is available at Aetrix Electronics and suitable for TFT-LCD panel manufacturing, portable display module integration, and industrial HMI development requiring stable component supply and long-term production continuity.
Supply support for EL7583IR 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 products.
The EL7583IR belongs to Intersil's TFT-LCD power management product line, engineered specifically to consolidate column driver, gate-on, and gate-off supplies into a single IC for space- and cost-constrained display systems.
FAQ
What is the maximum output current capability of the EL7583IR's boost converter?
The EL7583IR's boost converter delivers up to 470mA at 12V output when supplied from a 5V input, and 370mA at 15V output. This is supported by its internal 1.75A peak FET current limit and 0.22Ω RDS(on), enabling direct driving of column driver ICs without external pass devices. The EL7583IR datasheet specifies these values under standard test conditions with proper thermal management.
Can the EL7583IR generate both positive and negative bias voltages simultaneously?
Yes, the EL7583IR simultaneously generates three regulated outputs: VBOOST (5V–17V), VON (+8V–+40V), and VOFF (–5V––40V). Its dual charge pumps operate synchronously at half the boost switching frequency and are independently enabled via ENP and ENBN pins, allowing precise start-up sequencing required for TFT-LCD gate driver integrity. This capability is intrinsic to the EL7583IR's architecture.
What package type is used for the EL7583IR, and is it RoHS compliant?
The EL7583IR uses a 20-lead TSSOP package (package drawing MDP0044) with Pb-free plus anneal construction, fully compliant with RoHS Directive 2011/65/EU. It features 100% matte tin plate termination and is qualified for both SnPb and Pb-free reflow processes, with MSL level 1 rating per J-STD-020. This package is shared across the EL7583IR family variants.
How is the switching frequency adjusted on the EL7583IR?
The EL7583IR's switching frequency is set externally via a resistor (ROSC) connected between pin 20 and ground. With ROSC = 100kΩ, the typical frequency is 680kHz; the full range spans 200kHz to 1000kHz using 240kΩ to 60kΩ resistors. This adjustment directly scales both the boost converter and charge pump frequencies (FPUMP = 0.5 × FOSC), as confirmed in the EL7583IR electrical specifications table.
Does the EL7583IR include thermal protection, and what is its trip threshold?
Yes, the EL7583IR incorporates an internal over-temperature protection circuit that disables all outputs when the die junction temperature exceeds 130°C. Recovery occurs after temperature falls below 90°C due to 40°C hysteresis. This feature is guaranteed across the full –40°C to +85°C ambient range and is explicitly documented in the Absolute Maximum Ratings and Electrical Specifications sections of the EL7583IR datasheet.
EL7583IR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
EL7583IR FAQ
1.How can I place an order for EL7583IR through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7583IR 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 EL7583IR reliable?
The price and inventory of EL7583IR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7583IR is usually 5 days.
3.What payment methods are accepted for EL7583IR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7583IR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7583IR?
EL7583IR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7583IR 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 EL7583IR?
For technical support, including EL7583IR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7583IR requirements.
6.How does Aetrix verify that EL7583IR is sourced from the original manufacturer or authorized distributors?
All EL7583IR 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 EL7583IR meets industry standards.
7.What is the process for return or replacement of EL7583IR?
All EL7583IR units undergo pre-shipment inspection (PSI). If there is an issue with EL7583IR, 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 EL7583IR part is unused and in its original packaging.
Return procedure for EL7583IR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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