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Renesas EL7642AILTZ
- Part No.:
- EL7642AILTZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
EL7642AILTZ.pdf
- Description:
- IC REG CONV TFT LCD 7OUT 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,636
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Product details
Overview
EL7642AILTZ from Intersil is a TFT-LCD DC/DC power management IC integrating a 1.2MHz current-mode boost regulator (18V/3A FET), two LDO controllers (VON/VOFF), a VON-slice circuit with adjustable delay, and five rail-to-rail operational amplifiers for VCOM/VGAMMA generation. It delivers ±75mA amplifier output current, 12MHz bandwidth, and 12V/µs slew rate in LCD panel bias supply applications.
For engineers reviewing the EL7642AILTZ datasheet, EL7642AILTZ pinout, EL7642AILTZ application, or EL7642AILTZ equivalent, this page provides verified technical context, exact pin functions per the 32-lead QFN package, confirmed amplifier count (five), real-world sequencing timing (10ms delays), and validated alternative options for TFT-LCD power design.
Technical Context
The EL7642AILTZ implements a fixed-frequency 1.2MHz current-mode PWM boost converter with internal 18V/3A N-channel MOSFET, supporting both P-mode (fast transient response) and PI-mode (tight regulation) via COMP pin configuration. Its dual LDO controllers regulate external VON (positive) and VOFF (negative) supplies using external transistors, with built-in fault protection and start-up sequencing.
Five independent rail-to-rail op-amps provide VCOM and VGAMMA drive with 150mA short-circuit current capability, 12V/µs slew rate, and 12MHz –3dB bandwidth. The VON-slice circuit enables programmable delay between VON activation and downstream signal enablement, critical for LCD panel power sequencing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Boost Output Voltage | Up to 18V; set by external resistor divider on FB pin; supports VON/VOFF charge pumps. |
| Amplifier Count | Five independent op-amps (OUT1–OUT5); enables full VGAMMA tuning and VCOM buffering in high-resolution TFT panels. |
| Op-Amp Slew Rate | 12V/µs; ensures fast settling of gamma correction voltages during frame updates without distortion. |
| VON/VOFF Sequencing | Four-stage controlled delay (tDEL1–tDEL3 = 10ms each with CDEL = 100nF); prevents panel latch-up during power-up. |
| Package | 32-lead 5mm × 5mm thin QFN (MDP0051); exposes thermal pad for PCB heat sinking; RoHS-compliant Pb-free + anneal finish. |
| Operating Temperature | –40°C to +85°C ambient; validated across industrial-grade LCD monitor, notebook, and LCD-TV operating environments. |
| Input Supply Range | 2.6V to 5.5V VIN; compatible with single-cell Li-ion, 3.3V, or 5V system rails without pre-regulation. |
Pinout & Package
EL7642AILTZ uses a 32-lead 5mm × 5mm thin QFN package (MDP0051) with exposed thermal pad. Pin numbering follows top-view orientation per datasheet Figure 1 (EL7642A pinout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT5 | Operational amplifier outputs | Drive VCOM and VGAMMA reference strings; rail-to-rail swing supports full-panel grayscale fidelity. |
| POS1–POS5, NEG1–NEG5 | Op-amp non-inverting/inverting inputs | Accept precision DAC or resistor-divider gamma references; high CMRR (60–90dB) rejects supply noise. |
| SUP | Amplifier positive supply rail | Connects to VBOOST-derived rail; bypassed to BGND with 0.1µF capacitor for low-noise analog operation. |
| DRVP / DRVN | LDO transistor drive outputs | Control external PNP/NPN pass transistors for VON/VOFF; sink/source up to 4mA with <10Ω on-resistance. |
| FBP / FBN | Positive/negative LDO feedback inputs | Set VON/VOFF output voltage via external resistive dividers; trip thresholds at 0.9V (FBP) and 430mV (FBN) for fault detection. |
| DEL | Delay capacitor connection | Configures 10ms sequencing intervals (tDEL1–tDEL3) with 100nF capacitor; determines VON-slice activation timing. |
| COM / SRC / DRN | VON-slice switch terminals | COM connects to SRC (high-side) or DRN (low-side) under CTL control; enables programmable gate driver enable timing. |
Key Features
| Feature | Design Value |
|---|---|
| Five integrated op-amps | Eliminates need for five discrete amplifiers in VGAMMA generation, reducing BOM count and layout area by >70%. |
| Rail-to-rail I/O | Enables full-scale gamma voltage generation (e.g., 0–15V) without headroom loss, preserving contrast ratio accuracy. |
| Programmable VON-slice delay | Adjusts timing between VON ramp completion and COM switching via CDEL; prevents row-driver overvoltage stress. |
| Internal soft-start (7ms) | Prevents inrush current into boost output and LDO capacitors, avoiding input rail collapse during cold start. |
| Thermal shutdown (140°C) | Halts LX switching and disables all regulators when junction temperature exceeds safe limit; auto-recovers after cooldown. |
Applications
| TFT-LCD Panel Bias Supply | LCD Monitor Power Architecture |
|---|---|
Use Scenario: Generating precise VCOM and multi-level VGAMMA reference voltages for 1080p+ active-matrix LCD panels. IC Role / Device Role / Timing Role: EL7642AILTZ provides five synchronized op-amps and sequenced VON/VOFF rails to establish stable panel bias during video frame transitions. Use Value: 12V/µs slew rate and 12MHz bandwidth ensure gamma voltage settling within <1µs, eliminating vertical banding artifacts. |
Use Scenario: Consolidating boost, VON, VOFF, and gamma amplification into one IC for compact 24-inch desktop LCD monitors. IC Role / Device Role / Timing Role: EL7642AILTZ integrates all major panel power functions-replacing ≥8 discrete components-and enforces strict 10ms inter-rail delays. Use Value: Reduces total solution size by 45% vs. multi-chip alternatives while maintaining ±0.5% VON/VOFF regulation under dynamic load. |
| Notebook Display Subsystem | LCD-TV Panel Interface |
Use Scenario: Powering high-brightness 13.3-inch IPS displays in ultrabooks with battery-efficient 3.3V input operation. IC Role / Device Role / Timing Role: EL7642AILTZ operates from 2.6–5.5V VIN, delivers 18V VBOOST, and sequences VON/VOFF before enabling gamma amps to prevent panel flash. Use Value: 90%+ boost efficiency at 500mA load extends battery runtime; rail-to-rail op-amps support wide-gamut color calibration. |
Use Scenario: Driving 4K UHD LCD TV panels requiring 32+ VGAMMA levels and high-current VCOM buffering. IC Role / Device Role / Timing Role: EL7642AILTZ's five op-amps directly buffer DAC outputs for 32-level gamma, while VON-slice synchronizes with TCON enable signals. Use Value: ±75mA continuous output per amp sustains 32-level gamma string currents without droop, ensuring uniform luminance across screen. |
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 |
|---|---|---|---|
| EL7641AILTZ | Three op-amps instead of five; identical boost, LDO, and sequencing architecture. | Suitable for lower-resolution panels (e.g., WXGA) requiring ≤3 VGAMMA strings and basic VCOM. | Select when gamma complexity is reduced and board space allows consolidation of fewer amplifiers. |
| TPS65105RGZR | Four op-amps, integrated charge-pump diodes, no VON-slice circuit; TI proprietary sequencing logic. | Requires external diodes for VON/VOFF charge pumps; lacks programmable delay for gate driver enable timing. | Choose for designs prioritizing integrated diodes over precise VON-slice control, accepting fixed sequencing. |
Compared with EL7642AILTZ, EL7641AILTZ reduces amplifier count for cost-sensitive mid-tier panels, while TPS65105RGZR trades VON-slice flexibility for integrated diodes-neither offers five op-amps plus programmable slice timing in a single 5×5 QFN package.
Availability
EL7642AILTZ is available at Aetrix Electronics and suitable for TFT-LCD panels, LCD monitors, and notebook displays requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for EL7642AILTZ 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 high-performance analog and power management ICs for display, industrial, and communications systems.
The EL764x family was designed specifically for TFT-LCD panel power subsystems, integrating boost conversion, dual LDO control, and multiple op-amps to replace discrete solutions in monitors, notebooks, and TVs.
FAQ
What is the maximum number of operational amplifiers integrated in EL7642AILTZ?
The EL7642AILTZ integrates exactly five operational amplifiers (OUT1–OUT5), confirmed by the EL7642A-specific pinout diagram on page 2 of FN6270 and the "five amplifiers" statement in the datasheet overview. This distinguishes it from the EL7641A (three amps) and EL7640A (one amp) variants. Each amplifier supports rail-to-rail I/O, 12V/µs slew rate, and ±75mA short-circuit output current.
Does EL7642AILTZ include built-in power sequencing control?
Yes, EL7642AILTZ provides hardware-based power sequencing with four defined delay intervals: tON (10ms turn-on), tDEL1 (10ms VBOOST-to-VOFF), tDEL2 (10ms VON-to-VOFF), and tDEL3 (10ms VON-to-VON-slice enable). These are set by a single external 100nF capacitor on the DEL pin and are explicitly documented in the Electrical Specifications table on page 5 of FN6270.
What package type and dimensions does EL7642AILTZ use?
EL7642AILTZ uses a 32-lead thin QFN package measuring 5mm × 5mm with an exposed thermal pad (package drawing MDP0051). This is confirmed in the Ordering Information table (page 1) and Pinouts section (page 2) of FN6270. The package is Pb-free plus anneal compliant per RoHS and rated for –40°C to +85°C operation.
Can EL7642AILTZ operate from a 3.3V input supply?
Yes, EL7642AILTZ supports an input supply range of 2.6V to 5.5V, explicitly specified in the Electrical Specifications table (page 3, parameter VIN). At 3.3V input, it delivers regulated VBOOST up to 18V, powers five op-amps from SUP, and maintains full sequencing and protection functionality across the –40°C to +85°C temperature range.
What is the function of the DEL pin on EL7642AILTZ?
The DEL pin on EL7642AILTZ connects to an external timing capacitor (typically 100nF) to configure all internal sequencing delays: tON, tDEL1, tDEL2, and tDEL3. As stated on page 5 of FN6270, each delay equals 10ms when CDEL = 100nF. This single-pin timing control simplifies layout and ensures deterministic power-up behavior for TFT-LCD panels.
EL7642AILTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Applications:
- Converter, TFT LCD
- Voltage - Input:
- 2.6V ~ 5.5V
- Number of Outputs:
- 7
- Voltage - Output:
- 5.5V ~ 20V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN-EP (5x5)
EL7642AILTZ FAQ
1.How can I place an order for EL7642AILTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7642AILTZ 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 EL7642AILTZ reliable?
The price and inventory of EL7642AILTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7642AILTZ is usually 5 days.
3.What payment methods are accepted for EL7642AILTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7642AILTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7642AILTZ?
EL7642AILTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7642AILTZ 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 EL7642AILTZ?
For technical support, including EL7642AILTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7642AILTZ requirements.
6.How does Aetrix verify that EL7642AILTZ is sourced from the original manufacturer or authorized distributors?
All EL7642AILTZ 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 EL7642AILTZ meets industry standards.
7.What is the process for return or replacement of EL7642AILTZ?
All EL7642AILTZ units undergo pre-shipment inspection (PSI). If there is an issue with EL7642AILTZ, 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 EL7642AILTZ part is unused and in its original packaging.
Return procedure for EL7642AILTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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