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Renesas ISL6422BEVEZ-T
- Part No.:
- ISL6422BEVEZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ISL6422BEVEZ-T.pdf
- Description:
- IC REG CONV SATELL 2OUT 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,504
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Product details
Overview
ISL6422BEVEZ-T from Renesas Electronics (formerly Intersil) is a dual-output LNB supply and control voltage regulator IC designed for satellite set-top box applications. It integrates two current-mode boost PWMs, two low-noise linear regulators, 22kHz tone generation, DiSEqC modulation capability, and full I²C interface control. Each output delivers up to 750mA at selectable voltages (13.3V/14.3V/18.3V/19.3V) with ±0.26V output accuracy and <100mV load regulation at full current.
For engineers reviewing the ISL6422BEVEZ-T datasheet, ISL6422BEVEZ-T pinout, ISL6422BEVEZ-T application, or ISL6422BEVEZ-T equivalent, this device serves as a complete power and control solution for dual-LNB systems requiring precise voltage selection, tone injection, fault diagnostics, and cable-length compensation in compact STB designs.
Technical Context
The ISL6422BEVEZ-T implements dual independent current-mode boost converters feeding linear post-regulators, maintaining constant ~0.8V dropout across pass elements to minimize dissipation while enabling symmetrical 22kHz tone injection. Its internal 22kHz oscillator is factory-trimmed per EUTELSAT DiSEqC standards and supports both internal tone generation and external DiSEqC envelope modulation via EXTM1/EXTM2 pins.
I²C control enables full configuration of output voltages (VTOP/VBOT bits), enable states (EN1/EN2), current limiting thresholds (ISELxH/L/R), dynamic vs. static overload protection (DCL), and diagnostic readback (OLF, BCF, OTF, OUVF flags). The FLT pin provides open-drain interrupt signaling for overtemperature, overcurrent, UVLO, or shutdown events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Options | 13.3V, 14.3V, 18.3V, or 19.3V per channel - selectable via I²C or SELVTOP pins for LNB band/polarization control |
| Max Output Current | 750mA per channel - sufficient to drive standard dual-LNB loads with margin under thermal derating |
| Tone Frequency | 22.0kHz ±2.0kHz - factory-trimmed oscillator compliant with DiSEqC 1.0/1.1/1.2 protocols |
| I²C Address | 000100XX (4 options) - supports multi-device bus configuration without address conflict |
| Operating Temp Range | –20°C to +85°C - validated for consumer STB ambient conditions with thermal shutdown at 150°C |
| Package | 38-lead EPTSSOP - thermally enhanced package with θJA = 29°C/W for reliable dual-channel operation |
| Backward Voltage Rating | 28V - protects against reverse feed from LNB during hot-swap or cable fault conditions |
Pinout & Package
ISL6422BEVEZ-T is housed in a 38-lead Enhanced Plastic Thin Shrink Small Outline Package (EPTSSOP), thermally optimized for dual-channel LNB power delivery with exposed pad for heatsinking. Pin functions are validated per FN6486 Rev 2.00 datasheet, Page 9 (Functional Pin Description).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT1 / VOUT2 | Dual regulated LNB supply outputs | Deliver programmable 13.3–19.3V to LNB-A/B; support simultaneous dual-tuner operation with independent control |
| SELVTOP1 / SELVTOP2 | Voltage range select inputs | Pin-strapped selection between 13/14V and 18/19V ranges - enables hardware-based polarity/band switching |
| EXTM1 / EXTM2 | External DiSEqC modulation input | Accepts externally generated DiSEqC envelopes to modulate internal tone onto VOUT - critical for legacy LNB compatibility |
| TDIN1 / TDIN2 | Tone decoder inputs | Monitor VOUT for 22kHz tone presence; detect DiSEqC commands sent from LNB back to STB controller |
| FLT | Fault interrupt output | Open-drain signal asserted low on overtemperature, overcurrent, UVLO, or I²C reset - triggers host processor diagnostics |
| SDA / SCL | I²C bidirectional data/clock | Enable full remote configuration and real-time status readback (OLF, BCF, OTF, CABF) at up to 400kHz |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LNB power channels | Enables true 2-tuner/2-dish operation with simultaneous 750mA output - eliminates need for discrete dual-supply solutions |
| Integrated 22kHz tone generator & decoder | Factory-trimmed oscillator and tone detection circuitry eliminate external crystal and comparator components - reduces BOM count by ≥4 parts |
| Programmable dynamic current limiting | Five selectable thresholds (270–980mA) via I²C - allows precise matching to LNB inrush and steady-state requirements |
| DiSEqC-compatible modulation path | Supports both internal tone modulation and external DiSEqC envelope injection - ensures interoperability with all EUTELSAT-compliant LNBs |
| Back-current protection with diagnostics | Detects >140mA reverse current and enters 2ms-on/50ms-off clamping mode - prevents damage from miswired or faulty cables |
Applications
| Direct Satellite TV Receiver | Dual-Tuner PVR with Multi-Satellite Support |
|---|---|
Use Scenario: Consumer-grade satellite receiver with two independent tuners accessing different orbital positions (e.g., Astra 19.2°E and Hotbird 13°E). IC Role / Device Role / Timing Role: Provides independently controlled 13.3V/18.3V outputs and 22kHz tone to each LNB; decodes return DiSEqC signals for dish positioning. Use Value: Enables seamless switching between satellites without tuner conflict; tone decoding confirms LNB readiness before channel lock. |
Use Scenario: Personal video recorder supporting simultaneous recording and playback from two distinct satellite feeds. IC Role / Device Role / Timing Role: Delivers stable, isolated 14.3V/19.3V supplies to dual LNBs; manages DiSEqC burst encoding for motorized dish control during recording. Use Value: Eliminates cross-talk between tuner paths; dynamic current limiting prevents false overcurrent trips during LNB warm-up. |
| LNB Power Management in Set-Top Box | DiSEqC-Compliant Cable Distribution Hub |
Use Scenario: Integrated STB design where space and thermal budget constrain use of discrete DC/DC + LDO solutions. IC Role / Device Role / Timing Role: Replaces two boost converters + two LDOs + tone generator + DiSEqC interface with single IC; handles soft-start sequencing and fault recovery autonomously. Use Value: Reduces PCB area by >40% and component count by ≥12; integrated diagnostics accelerate field failure root-cause analysis. |
Use Scenario: Multi-output distribution amplifier feeding four or more satellite receivers from one LNB feed. IC Role / Device Role / Timing Role: Acts as intelligent repeater: receives DiSEqC commands from master STB, regenerates tone and voltage, and forwards commands to downstream LNBs. Use Value: Maintains signal integrity over long coax runs; backward leakage protection prevents interference between daisy-chained units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LNB supply and control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6422BERZ-T | Same silicon die in 40-lead 6×6 QFN package; θJA = 34°C/W vs. 29°C/W for EPTSSOP; no longer recommended per datasheet | Higher thermal resistance requires larger copper pour or forced airflow in high-power dual-LNB designs | Select ISL6422BEVEZ-T for new designs requiring optimal thermal performance in EPTSSOP footprint |
| MAX2102ETJ+T | Single-channel LNB controller; lacks dual-output capability and integrated DiSEqC decoder; requires external tone generator | Suitable only for single-tuner systems; cannot replace ISL6422BEVEZ-T in dual-LNB configurations without redesign | Use only when system requires single-output operation and cost sensitivity outweighs integration benefits |
Compared with ISL6422BERZ-T, the ISL6422BEVEZ-T offers superior thermal performance in the same product family, while MAX2102ETJ+T provides a lower-cost alternative only for non-dual applications - neither matches the full feature set of ISL6422BEVEZ-T for advanced satellite STBs.
Availability
ISL6422BEVEZ-T is available at Aetrix Electronics and suitable for satellite set-top box designs, dual-tuner personal video recorders, and DiSEqC-compliant distribution hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6422BEVEZ-T 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
Renesas Electronics Corporation acquired Intersil in 2017 and maintains full technical and manufacturing continuity for the ISL6422B family. Renesas is a global leader in microcontrollers, analog, and power management ICs.
The ISL6422B product line was developed specifically for satellite reception systems, integrating LNB power, control, and DiSEqC protocol handling into a single IC to simplify STB design and improve reliability in consumer broadcast equipment.
FAQ
What is the primary function of the ISL6422BEVEZ-T in satellite receiver systems?
The ISL6422BEVEZ-T serves as a dual-output LNB supply and control IC that generates and regulates two independent DC voltages (13.3–19.3V) for satellite low-noise block downconverters, while providing 22kHz tone generation, DiSEqC modulation, and comprehensive fault diagnostics via I²C. It replaces multiple discrete components in satellite set-top boxes, enabling compact, reliable dual-tuner designs.
Does the ISL6422BEVEZ-T support both horizontal and vertical polarization control?
Yes, the ISL6422BEVEZ-T supports polarization control through its dual-voltage output architecture: 13.3V/14.3V outputs typically correspond to vertical polarization, while 18.3V/19.3V outputs correspond to horizontal polarization. Selection is achieved via I²C register bits (VTOP/VBOT) or hardware pins (SELVTOP1/SELVTOP2), allowing direct interface with LNB polarization switching logic.
How does the ISL6422BEVEZ-T handle DiSEqC communication with LNBs?
The ISL6422BEVEZ-T supports DiSEqC via three integrated functions: (1) internal 22kHz tone generation (factory-trimmed to 22.0kHz), (2) external DiSEqC envelope modulation through EXTM1/EXTM2 pins, and (3) tone decoding via TDIN1/TDIN2 inputs with configurable thresholds. This enables full bidirectional DiSEqC 1.x protocol compliance without external components.
What thermal protection mechanisms are built into the ISL6422BEVEZ-T?
The ISL6422BEVEZ-T includes junction temperature monitoring with thermal shutdown activation at +150°C (typical) and automatic recovery at +130°C (typical). If overtemperature events occur four times consecutively, the device latches off and asserts FLT low until reset via I²C EN toggle or power cycle. This prevents thermal runaway in enclosed STB enclosures.
Can the ISL6422BEVEZ-T operate with a single 12V input supply?
Yes, the ISL6422BEVEZ-T operates from an 8V to 14V input supply, making 12V nominal input fully compatible. Its internal boost converters generate appropriate intermediate voltages for the linear regulators, ensuring stable 13.3–19.3V outputs with minimal dropout loss. Input undervoltage lockout disables operation below 7.5V to prevent unstable regulation.
ISL6422BEVEZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Converter, Satellite Set-Top Box Designs
- Voltage - Input:
- 8V ~ 14V
- Number of Outputs:
- 2
- Voltage - Output:
- 13.3V ~ 18.3V, 14.3V ~ 19.3V
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-TSSOP-EP
ISL6422BEVEZ-T FAQ
1.How can I place an order for ISL6422BEVEZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6422BEVEZ-T 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 ISL6422BEVEZ-T reliable?
The price and inventory of ISL6422BEVEZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6422BEVEZ-T is usually 5 days.
3.What payment methods are accepted for ISL6422BEVEZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6422BEVEZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6422BEVEZ-T?
ISL6422BEVEZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6422BEVEZ-T 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 ISL6422BEVEZ-T?
For technical support, including ISL6422BEVEZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6422BEVEZ-T requirements.
6.How does Aetrix verify that ISL6422BEVEZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6422BEVEZ-T 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 ISL6422BEVEZ-T meets industry standards.
7.What is the process for return or replacement of ISL6422BEVEZ-T?
All ISL6422BEVEZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6422BEVEZ-T, 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 ISL6422BEVEZ-T part is unused and in its original packaging.
Return procedure for ISL6422BEVEZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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