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STMicroelectronics LNBP15SP-TR
- Part No.:
- LNBP15SP-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Special Purpose Regulators
- Package:
- PowerSO-10 Exposed Bottom Pad
- Datasheet:
-
LNBP15SP-TR.pdf
- Description:
- IC REG CONV RECVRS 1OUT 10PWRSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,943
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Product details
Overview
LNBP15SP-TR from STMicroelectronics is a monolithic linear voltage regulator in PowerSO-10 package, designed to supply and control LNB downconverters via coaxial cable in dual-port satellite receivers. It delivers logic-selectable 13 V or 14 V (typ.) outputs at up to 650 mA, features factory-trimmed 22 kHz tone generation (±2 kHz tolerance), dynamic overload protection with 4.7 µF CEXT timing, and backward current limiting to 3 mA in stand-by mode.
For engineers reviewing the LNBP15SP-TR datasheet, LNBP15SP-TR pinout, LNBP15SP-TR application, or LNBP15SP-TR equivalent, key selection criteria include dual-supply input switching (VCC1/VCC2), LLC-enabled +1 V line-length compensation, EXTM analog modulation support, and OLF open-collector diagnostic flag for real-time overcurrent monitoring in satellite front-end designs.
Technical Context
The LNBP15SP-TR implements parallel-interface LNB power control with two independent output ports (LNBA/LNBB) selected via OSEL, voltage set by VSEL (13/14 V), and line-length compensation enabled by LLC. Its internal dual-input supply switch automatically selects VCC1 (16 V min) for 13 V output or VCC2 (23 V min) for 14 V output to minimize power dissipation.
Dynamic overload protection operates with a 1200 ms typical cycle (toff + ton) using an external 4.7 µF capacitor on CEXT, while the OLF pin transitions from high-impedance to LOW during fault conditions. The integrated 22 kHz oscillator starts rapidly to support DiSEqC™ burst coding, and the MI-to-LNBA bypass switch enables slave operation in single-dish, dual-receiver systems when EN is low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 13 V (typ.) or 14 V (typ.) selectable via VSEL and LLC pins; supports standard LNB bias and coaxial voltage-drop compensation. |
| Max Output Current | 650 mA (typ.); internally limited to protect against sustained short-circuit loads on LNBA/LNBB. |
| Tone Frequency | 22 kHz ±2 kHz (factory trimmed); no external components required for DiSEqC™ tone generation. |
| Backward Current Limit | 3 mA max in stand-by (EN = LOW); prevents reverse current flow from shared coaxial lines into the IC. |
| Overload Cycle Time | 1200 ms typical (toff + ton) with 4.7 µF CEXT; reduces thermal stress during persistent overloads. |
| Supply Input Range | VCC1: 15–25 V; VCC2: 22–25 V; automatic selection ensures optimal efficiency per output voltage setting. |
| Thermal Shutdown | 150 °C junction temperature; protects die integrity under sustained high-power dissipation. |
Pinout & Package
LNBP15SP-TR is housed in a surface-mount PowerSO-10 package (10-pin, exposed die pad), optimized for thermal performance (RthJC = 2 °C/W) and space-constrained satellite receiver PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 | Primary supply input | 15–25 V source; selected automatically when 13 V output is configured. |
| VCC2 | Secondary supply input | 22–25 V source; selected automatically when 14 V output is configured. |
| LNBA | Main LNB output port | Delivers regulated 13/14 V to first LNB; connects to MI in stand-by for slave operation. |
| VSEL | Voltage selection control | Logic input determining base output voltage (L = 13 V, H = 18 V - but LNBP15SP-TR only supports 13/14 V). |
| EN | Enable/disable control | Active-HIGH logic input; disables both outputs and limits backward current to ≤3 mA when LOW. |
| ENT | Tone enable input | Activates internal 22 kHz oscillator; fast start-up enables DiSEqC™ burst encoding. |
| CEXT | Overload timing capacitor | Connects to GND; sets 1200 ms typical fault cycle time (e.g., 4.7 µF yields tOFF ≈ 1100 ms). |
| EXTM | Analog modulation input | AC-coupled interface for external signal modulation of output voltage (gain = 5 V/V, BW = 10 Hz–40 kHz). |
| OLF | Overload diagnostic flag | Open-collector output; pulls LOW during overcurrent or thermal fault, remains high-impedance otherwise. |
| GND | Power and signal reference | Internally connected to die frame; provides thermal path and circuit common for all functions. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply input auto-selection | Reduces power dissipation by routing VCC1 (16 V min) for 13 V output or VCC2 (23 V min) for 14 V output. |
| Factory-trimmed 22 kHz oscillator | ±2 kHz accuracy eliminates need for external tuning components and simplifies DiSEqC™ compliance. |
| Dynamic overload protection | Self-resetting cycle (toff/ton) with external CEXT sets fault response timing without latching shutdown. |
| Backward current blocking | ≤3 mA leakage in stand-by mode enables safe coexistence on shared coaxial distribution networks. |
| Line-length compensation (LLC) | +1 V boost to nominal output voltage compensates for coaxial cable IR drop in long-run installations. |
Applications
| Direct Broadcast Satellite Receiver | Dual-LNB Multi-Switch System |
|---|---|
Use Scenario: Consumer-grade satellite TV receiver with two antenna inputs supporting independent channel selection. IC Role / Device Role / Timing Role: Primary LNB power controller delivering 13/14 V to LNBA/LNBB ports, enabling simultaneous reception from two orbital positions. Use Value: Logic-selectable voltage and port control allow firmware-driven LNB configuration without hardware changes. | Use Scenario: Residential multi-room satellite distribution using a multi-switch fed by two LNBs. IC Role / Device Role / Timing Role: Master-side LNBP regulating voltage and injecting 22 kHz tone to select polarities/frequencies across shared coaxial runs. Use Value: Integrated tone oscillator and fast ENT response ensure reliable DiSEqC™ command transmission to downstream switches. |
| Single-Dish Dual-Receiver Slave Node | Satellite Set-Top Box with Diagnostic Monitoring |
Use Scenario: Secondary satellite receiver sharing one dish with a master unit via coaxial bus. IC Role / Device Role / Timing Role: Slave-mode regulator using MI-to-LNBA bypass switch to accept power/control from master receiver when EN = LOW. Use Value: Eliminates need for separate LNB power supply and enables seamless integration in cost-sensitive secondary tuners. | Use Scenario: Professional-grade STB requiring real-time fault detection during field deployment. IC Role / Device Role / Timing Role: LNB supply IC with OLF open-collector flag reporting overcurrent events to MCU for logging or UI alerting. Use Value: External 4.7 µF CEXT sets deterministic 1200 ms fault cycle, enabling predictable recovery behavior and field-service diagnostics. |
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 |
|---|---|---|---|
| LNBP14SP-TR | Fixed 13 V output (no LLC compensation); identical pinout and protection features. | Lacks +1 V line-length compensation; suitable only for short coaxial runs (<15 m). | Select when system-level voltage drop is negligible and BOM simplification is prioritized. |
| LNBP16SP-TR | Supports 18/19 V outputs instead of 13/14 V; same PowerSO-10 package and feature set. | Required for universal LNBs needing higher bias voltage; incompatible with 13 V-only legacy LNBs. | Choose for new designs targeting wide LNB compatibility, especially in regions using 18 V standard. |
Compared with LNBP14SP-TR, LNBP15SP-TR adds LLC-based +1 V compensation for longer cable runs, while LNBP16SP-TR shifts the voltage range upward to 18/19 V - making LNBP15SP-TR the optimal choice for mid-length coaxial deployments requiring 13/14 V flexibility and diagnostic visibility.
Availability
LNBP15SP-TR is available at Aetrix Electronics and suitable for satellite TV receivers, multi-switch distribution systems, and dual-LNB set-top boxes requiring stable component supply, precise 22 kHz tone generation, and robust coaxial-line fault management.
Supply support for LNBP15SP-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The LNBP series targets satellite receiver front-ends, integrating LNB power regulation, DiSEqC™ tone generation, and coaxial-line protection into single-package solutions for cost-sensitive, thermally constrained designs.
FAQ
What is the function of the LLC pin on LNBP15SP-TR?
The LLC (Line Length Compensation) pin enables a +1 V boost to the nominal output voltage (e.g., 13 V → 14 V) to offset IR drop across long coaxial cables. When LLC is driven HIGH, the regulated output increases by approximately 1 V, maintaining sufficient bias voltage at the LNB input under real-world cabling conditions.
How does the OLF pin behave during an overload event?
During overcurrent or thermal overload, the OLF pin transitions from high-impedance to LOW (≤0.5 V at 8 mA sink), providing a direct diagnostic signal to the host MCU. After the fault clears, OLF returns to high-impedance automatically - no software reset is required, enabling autonomous recovery in unattended systems.
Can LNBP15SP-TR operate with only one supply voltage?
Yes - both VCC1 and VCC2 can be connected to a common 23 V source. While this increases power dissipation slightly compared to dual-supply operation, it simplifies power design and maintains full functionality including voltage selection, tone generation, and protection features without performance degradation.
What is the purpose of the EXTM pin and how is it used?
The EXTM pin accepts AC-coupled analog modulation signals (up to 400 mVPP, 10 Hz–40 kHz) to superimpose low-frequency control data onto the DC LNB supply. A series DC-blocking capacitor is mandatory; unused EXTM may be left floating. This enables proprietary remote control protocols beyond standard DiSEqC™.
LNBP15SP-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- PowerSO-10 Exposed Bottom Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Converter, Analog and Digital Satellite Receivers
- Voltage - Input:
- 15V ~ 25V
- Number of Outputs:
- 1
- Voltage - Output:
- 13V, 18V
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-PowerSO
LNBP15SP-TR FAQ
1.How can I place an order for LNBP15SP-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LNBP15SP-TR 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 LNBP15SP-TR reliable?
The price and inventory of LNBP15SP-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LNBP15SP-TR is usually 5 days.
3.What payment methods are accepted for LNBP15SP-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LNBP15SP-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LNBP15SP-TR?
LNBP15SP-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LNBP15SP-TR 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 LNBP15SP-TR?
For technical support, including LNBP15SP-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LNBP15SP-TR requirements.
6.How does Aetrix verify that LNBP15SP-TR is sourced from the original manufacturer or authorized distributors?
All LNBP15SP-TR 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 LNBP15SP-TR meets industry standards.
7.What is the process for return or replacement of LNBP15SP-TR?
All LNBP15SP-TR units undergo pre-shipment inspection (PSI). If there is an issue with LNBP15SP-TR, 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 LNBP15SP-TR part is unused and in its original packaging.
Return procedure for LNBP15SP-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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