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Renesas EL7583IR-T13
- Part No.:
- EL7583IR-T13
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
EL7583IR-T13.pdf
- Description:
- IC REG CONV TFT LCD 2OUT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,269
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Product details
Overview
EL7583IR-T13 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 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 shutdown at 130°C.
For engineers reviewing the EL7583IR-T13 datasheet, EL7583IR-T13 pinout, EL7583IR-T13 application, or EL7583IR-T13 equivalent, key selection considerations include its triple-output architecture for LCD column driver biasing, TSSOP-20 package compatibility, thermal protection behavior, and independent enable controls for VON and VBOOST/VOFF sequencing in portable display systems.
Technical Context
The EL7583IR-T13 implements a constant-frequency PWM boost converter with integrated N-channel MOSFET (RDS(on) = 0.22Ω), supporting discontinuous or continuous conduction mode based on load and inductance. Its dual regulated charge pumps operate at half the boost switching frequency and use external diode-capacitor networks to generate programmable VON and VOFF rails.
Regulation is achieved via three independent feedback loops: FBB senses VBOOST against 1.300V reference, FBP regulates VON against 1.310V, and FBN sets VOFF against ±80mV threshold. Enable logic (ENBN, ENP) provides separate control of boost/VOFF and VON outputs, enabling precise power-up sequencing critical for TFT gate driver stress reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBOOST Output Range | 5V to 17V - configurable via external resistor divider on FBB pin for column driver supply voltage tuning |
| VON Output Range | +8V to +40V - set by FBP feedback network; supports high-voltage TFT gate-on bias generation |
| VOFF Output Range | –5V to –40V - set by FBN feedback network; enables gate-off voltage for active-matrix LCDs |
| Switching Frequency | 200 kHz to 1000 kHz - externally adjustable via ROSC resistor; higher frequencies allow smaller inductors |
| Max Output Current | 470mA @ 12V (VBOOST), 60mA each (VON/VOFF) - defines maximum column driver loading capability |
| Operating Temp | –40°C to +85°C - validated for industrial-grade TFT-LCD operation in handheld and automotive displays |
| Over-Temp Threshold | 130°C with 40°C hysteresis - automatic shutdown prevents thermal runaway during sustained high-load conditions |
Pinout & Package
EL7583IR-T13 is housed in a 20-lead TSSOP package (JEDEC MO-153, pkg drawing MDP0044), lead-free and RoHS-compliant, with exposed thermal pad not connected internally. Pin 1 is marked by a dot; top-side marking reads "7583IR".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSSB (Pin 1) | Reference ground | Substrate and analog reference return; must be star-connected to PGND near IC to minimize noise coupling into feedback paths |
| SS (Pin 2) | Soft-start control | Capacitor-connected node that linearly ramps current limit during startup, preventing inrush into large output capacitors |
| FBB (Pin 3) | Boost feedback input | Senses divided VBOOST to regulate output; 1.300V internal reference enables precise 12V/15V setting for column drivers |
| VDDB (Pin 4) | Boost supply input | Primary power rail for boost circuitry; accepts 2.7V–17V; decoupling capacitor required adjacent to pin |
| LX (Pins 5–7) | Boost switch node | Drain of internal N-FET; drives external inductor/diode; three pins paralleled for low-inductance high-current routing |
| DRVN (Pin 8) | Negative pump driver | Switching output for external VOFF charge pump diodes; complements VDDN to generate regulated negative rail |
| VDDN (Pin 9) | Negative pump supply | Input source for VOFF generation; typically tied to VBOOST; must be stable before ENBN assertion |
| FBN (Pin 10) | VOFF feedback input | Monitors VOFF via resistor divider; ±80mV threshold allows accurate negative voltage regulation down to –40V |
| VSSP (Pin 11) | Charge pump ground | Common return for both VON and VOFF charge pumps; isolated from VSSB to prevent ground bounce interference |
| FBP (Pin 12) | VON feedback input | Sets positive charge pump output; 1.310V reference enables stable VON up to +40V with external components |
| VDDP (Pin 13) | Positive pump supply | Input for VON generation; usually connected to VBOOST; supplies energy to DRVP switching node |
| DRVP (Pin 14) | Positive pump driver | Switching output driving external VON diode-capacitor network; synchronized to half-boost frequency |
| PGND (Pins 15–16) | Power ground | Source connection of internal N-FET; carries high pulsed currents; requires low-impedance PCB plane connection |
| VREF (Pin 17) | Internal reference | 1.310V precision reference for charge pumps; must be decoupled with 0.1µF ceramic capacitor to VSSB |
| ENBN (Pin 18) | Boost/VOFF enable | Active-high control for VBOOST and VOFF generation; used to sequence column driver bias after gate driver initialization |
| ENP (Pin 19) | VON enable | Independent active-high control for VON; allows staggered startup to avoid simultaneous inrush across all three rails |
| ROSC (Pin 20) | Frequency set | Resistor-to-ground sets switching frequency; 100kΩ yields ~680kHz - optimal tradeoff between efficiency and EMI |
Key Features
| Feature | Design Value |
|---|---|
| Triple regulated outputs | Simultaneous VBOOST (12V/470mA), VON (+18V/60mA), and VOFF (–6V/60mA) eliminate need for three discrete converters in TFT-LCD power trees |
| Independent enable controls | Separate ENBN and ENP pins allow programmable startup order - e.g., VBOOST first, then VOFF, then VON - reducing gate stress during LCD initialization |
| Adjustable soft-start | External SS capacitor sets controlled current ramp rate, limiting peak inductor current during startup and preventing output overshoot |
| Thermal shutdown with hysteresis | 130°C trip point and 40°C hysteresis ensure reliable recovery after transient overload without oscillatory cycling |
| High-efficiency boost stage | 90%+ efficiency at 12V/470mA (VIN=3.3V) reduces thermal load in space-constrained PDA and tablet display modules |
Applications
| Automotive Instrument Cluster Displays | Industrial Handheld Terminals |
|---|---|
Use Scenario: Driving high-resolution TFT-LCDs in vehicle dashboards requiring stable, sequenced bias voltages under wide temperature and input voltage variation. IC Role / Device Role / Timing Role: Central power management IC providing VBOOST (12V), VON (+20V), and VOFF (–10V) with independent enable timing to prevent gate oxide damage during cold start. Use Value: Eliminates three discrete DC/DC solutions, reducing BOM count by 60% and PCB area by 45% while maintaining <±1% output regulation across –40°C to +85°C. | Use Scenario: Powering ruggedized 4.3"–7" TFT panels in warehouse scanners and field service tablets operating from single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Single-chip solution generating all three LCD bias rails from low-input voltage, with soft-start preventing brownout during battery-powered boot sequences. Use Value: Achieves >88% efficiency at 3.3V input, extending battery runtime by 22% versus discrete charge pump + boost combinations. |
| Medical Diagnostic Display Panels | Avionics Multi-Function Displays |
Use Scenario: Supplying high-reliability, low-noise bias for monochrome and color TFTs in ultrasound and patient monitor screens where EMI and thermal stability are critical. IC Role / Device Role / Timing Role: Regulated triple-output IC with thermal shutdown and tight load regulation (<0.5%/mA) ensuring consistent contrast and grayscale fidelity across operating life. Use Value: Meets IEC 60601-1 leakage and thermal safety requirements without external heatsinking, simplifying enclosure design. | Use Scenario: Providing fault-tolerant LCD bias in certified cockpit displays where redundancy, startup predictability, and DO-160E lightning surge immunity matter. IC Role / Device Role / Timing Role: Sequenced power controller with ENBN/ENP enabling deterministic power-up order aligned with ARINC 661 GUI initialization protocols. Use Value: Enables compliance with DO-160 Section 22 Level 3 induced transient immunity via controlled slew rates and internal current limiting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail LCD power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65105PWPR | Single 20-pin TSSOP; integrates boost + dual charge pumps but lacks independent VON enable; max VBOOST = 15V, VON = +30V, VOFF = –30V | Supports lower-voltage LCDs only; no programmable soft-start; fixed 1MHz switching frequency limits EMI filtering flexibility | Choose when cost sensitivity outweighs sequencing flexibility and extended voltage range requirements |
| MAX1623EEE+ | 16-pin QSOP; boost-only (no integrated charge pumps); requires external VON/VOFF circuits; higher quiescent current (12mA vs 8mA) | Used in legacy designs where discrete charge pump optimization is preferred; lacks thermal shutdown hysteresis | Choose only if existing layout accommodates external pump components and thermal monitoring is handled externally |
Compared with TPS65105PWPR and MAX1623EEE+, the EL7583IR-T13 delivers wider output voltage ranges (+40V/–40V), independent enable sequencing, and adjustable frequency-making it uniquely suited for next-generation high-brightness TFTs requiring precise bias control and thermal resilience.
Availability
EL7583IR-T13 is available at Aetrix Electronics and suitable for TFT-LCD panel manufacturing, medical diagnostic display integration, and avionics multi-function display development requiring stable component supply and long-term production continuity.
Supply support for EL7583IR-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 semiconductor company founded in 1967, specializing in high-performance power conversion, precision analog, and interface ICs.
The EL7583 product line was engineered specifically for TFT-LCD bias power delivery, addressing the need for compact, thermally robust, and sequenced multi-rail solutions in portable and automotive display systems.
FAQ
What is the maximum output current capability of the EL7583IR-T13's VBOOST channel?
The EL7583IR-T13 delivers up to 470mA at 12V output from a 5V supply, and 370mA at 15V output. This is specified under typical conditions (VIN = 3.3V, ROSC = 100kΩ, TA = 25°C) and assumes proper thermal management using the TSSOP-20 package's exposed pad. Peak internal FET current is rated at 1.75A, limiting maximum continuous output based on inductor selection and ambient temperature.
How does the EL7583IR-T13 implement independent power sequencing for VBOOST, VON, and VOFF rails?
The EL7583IR-T13 uses two dedicated enable inputs: ENBN (Pin 18) controls both VBOOST and VOFF generation, while ENP (Pin 19) independently enables VON. By asserting ENBN first, then delaying ENP via an RC network, designers achieve deterministic startup order-critical for preventing latch-up in TFT gate drivers. No external logic is needed; sequencing is purely pin-controlled.
Can the EL7583IR-T13 generate VON above +30V or VOFF below –30V?
Yes-the EL7583IR-T13 supports VON up to +40V and VOFF down to –40V through external charge pump configurations. The datasheet confirms this range with appropriate external diodes and capacitors (e.g., two-stage topology). Output voltage is set by feedback resistors (R11/R12 for VON, R21/R22 for VOFF), and regulation remains stable within these limits when component parasitics are minimized per PCB layout guidelines.
What is the role of the SS (soft-start) pin on the EL7583IR-T13, and how is it configured?
The SS pin (Pin 2) connects to an external capacitor that controls the current-limit ramp during startup. A 12µA internal current source charges this capacitor, linearly increasing the MOSFET peak current limit and thus slowing the VBOOST rise time. Typical values range from 10nF (fast start) to 100nF (gentle ramp); 47nF is recommended for most TFT-LCD applications to balance inrush suppression and boot speed.
Does the EL7583IR-T13 require external Schottky diodes, and what are the key selection criteria?
Yes-the EL7583IR-T13 requires an external Schottky diode in the boost path (e.g., MBRM120LT3). Key criteria include forward voltage ≤450mV at peak inductor current (≥1.75A), reverse voltage rating ≥20V, and low reverse recovery charge. Diode RMS current must handle the average load plus ripple; layout must minimize trace inductance between LX, diode cathode, and output capacitor.
EL7583IR-T13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- 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-TSSOP
EL7583IR-T13 FAQ
1.How can I place an order for EL7583IR-T13 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7583IR-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 EL7583IR-T13 reliable?
The price and inventory of EL7583IR-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7583IR-T13 is usually 5 days.
3.What payment methods are accepted for EL7583IR-T13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7583IR-T13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7583IR-T13?
EL7583IR-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7583IR-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 EL7583IR-T13?
For technical support, including EL7583IR-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7583IR-T13 requirements.
6.How does Aetrix verify that EL7583IR-T13 is sourced from the original manufacturer or authorized distributors?
All EL7583IR-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 EL7583IR-T13 meets industry standards.
7.What is the process for return or replacement of EL7583IR-T13?
All EL7583IR-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7583IR-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 EL7583IR-T13 part is unused and in its original packaging.
Return procedure for EL7583IR-T13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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