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STMicroelectronics LNBP14SP-TR
- Part No.:
- LNBP14SP-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Special Purpose Regulators
- Package:
- PowerSO-10 Exposed Bottom Pad
- Datasheet:
-
LNBP14SP-TR.pdf
- Description:
- IC REG CONV RECVRS 1OUT 10PWRSO
- Quantity:
- Payment:
- Shipping:
Inventory:2,771
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Product details
Overview
LNBP14SP-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, integrates a factory-trimmed 22 kHz tone oscillator (±2 kHz tolerance), and provides dynamic short-circuit protection with 4.7 µF CEXT-based 1200 ms overload cycle.
For engineers reviewing the LNBP14SP-TR datasheet, LNBP14SP-TR pinout, LNBP14SP-TR application, or LNBP14SP-TR equivalent, key selection criteria include dual-supply input switching (VCC1/VCC2), line-length compensation (+1 V boost via LLC), backward current limiting (<3 mA in stand-by), and DiSEqC™-compatible tone burst timing.
Technical Context
The LNBP14SP-TR implements parallel-interface LNB power management with two independent output ports (LNBA/LNBB), where voltage selection (13/14 V) is controlled by VSEL and LLC pins, and port enable/disable is managed by EN and OSEL. Its internal dual-supply switch automatically selects VCC1 (≥16 V) for 13 V output or VCC2 (≥23 V) for 14 V output to minimize power dissipation.
It features a dedicated 22 kHz tone generator enabled by ENT, with fast start-up enabling DiSEqC™ burst coding; an analog EXTM input supports external modulation (5 V/V gain, 400 mVPP range); and dynamic overcurrent protection cycles between 1100 ms off-time (toff) and ~73 ms on-time (ton) when CEXT = 4.7 µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 13 V (typ.) or 14 V (typ.) selectable via VSEL + LLC; enables standard LNB bias and coaxial cable drop compensation |
| Max Output Current | 650 mA (typ.); sufficient for driving modern high-gain LNBs with margin for transient loads |
| Tone Frequency | 22 kHz ±2 kHz (factory trimmed); eliminates need for external crystal or calibration in DiSEqC™ systems |
| Dynamic Protection Cycle | 1200 ms typical ton+toff with 4.7 µF CEXT; reduces thermal stress during sustained short circuits |
| Backward Current Limit | 3 mA max in stand-by (EN = LOW); prevents reverse feed from shared coaxial lines in multi-receiver setups |
| Supply Input Range | VCC1: 16–25 V; VCC2: 23–25 V; dual-rail architecture cuts quiescent loss by >30% vs single-supply alternatives |
| Thermal Shutdown | 150 °C junction threshold; protects against thermal runaway under high ambient or poor heatsinking |
Pinout & Package
LNBP14SP-TR uses the PowerSO-10 surface-mount package (9.4 × 13.8 mm, 1.27 mm pitch), optimized for thermal performance (RthJC = 2 °C/W) and space-constrained satellite receiver PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC1 | Primary supply input | 16–25 V rail; selected internally for 13 V output mode; lower voltage minimizes dropout loss |
| 2 VCC2 | Secondary supply input | 23–25 V rail; selected internally for 14 V output mode; ensures regulation headroom across temperature |
| 3 LNBA | Main LNB output port | Delivers regulated 13/14 V to antenna port A; includes bypass path from MI in stand-by |
| 4 VSEL | Voltage select control | Logic input: LOW = 13 V, HIGH = 18/19 V base; used with LLC to set 14 V output |
| 5 EN | Enable control | Active-HIGH logic; disables both outputs and limits backward current to ≤3 mA when LOW |
| 7 ENT | Tone enable | Activates internal 22 kHz oscillator; fast edge response supports DiSEqC™ burst encoding |
| 8 CEXT | Protection timing capacitor | Connects to GND; sets 1100 ms off-time (toff) and 73 ms on-time (ton) for overload cycling |
| 9 EXTM | External modulation input | AC-coupled analog input (400 mVPP, 400 Ω Z); enables proprietary LNB signaling beyond DiSEqC™ |
| 10 GND | Power and signal reference | Internally connected to die frame; must be low-impedance plane for stable regulation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply input auto-selection | Reduces thermal load by routing only required rail (VCC1 for 13 V, VCC2 for 14 V), cutting power dissipation up to 35% |
| Factory-trimmed 22 kHz oscillator | Eliminates external components and calibration; ±2 kHz tolerance meets ETSI EN 300 468 DiSEqC™ timing requirements |
| Line-length compensation (LLC) | Boosts output by +1 V (typ.) to offset coaxial voltage drop-critical for long cable runs (>30 m) in residential installations |
| Dynamic overload protection | Self-resetting cycle (toff/ton) avoids latch-off failure; maintains system uptime during intermittent LNB faults |
| Stand-by backward current limit | Clamps reverse current to ≤3 mA when EN = LOW, enabling safe coexistence on shared coaxial distribution networks |
Applications
| Dual-Port Satellite Receiver | Single-Dish Dual-Receiver System |
|---|---|
|
Use Scenario: Consumer-grade satellite set-top box with two independent antenna inputs (JA/JB) serving multiple tuners or rooms. IC Role / Device Role / Timing Role: Primary LNB power controller delivering 13/14 V to LNBA/LNBB ports; manages DiSEqC™ tone bursts and port selection via MCU GPIOs. Use Value: Enables simultaneous reception from two orbital positions (e.g., Astra 19.2°E and Hotbird 13°E) without external power splitters or active switches. |
Use Scenario: Secondary receiver sharing coaxial cabling with a master unit in a single-dish installation (e.g., apartment building). IC Role / Device Role / Timing Role: Slave-mode LNB controller; uses MI-to-LNBA bypass switch (activated when EN = LOW) to defer powering/control to master receiver. Use Value: Eliminates need for separate LNB power supplies; reduces BOM cost and PCB area while maintaining full DiSEqC™ compatibility. |
| LNB Diagnostic-Enabled Receiver | Low-Cost Single-Port Set-Top Box |
|
Use Scenario: Professional or premium receiver requiring real-time LNB fault detection and reporting to user interface. IC Role / Device Role / Timing Role: Overload monitor using OLF open-collector flag (not available on LNBP14SP-TR per Pin Description table); this function is omitted in PowerSO-10 variants. Use Value: Not applicable - OLF pin is absent in LNBP14SP-TR (PowerSO-10); diagnostic capability requires LNBP15SP-TR or higher variant. |
Use Scenario: Entry-level satellite receiver targeting cost-sensitive markets with single antenna input and basic DiSEqC™ support. IC Role / Device Role / Timing Role: Compact LNB supply IC using only essential pins (VCC1/VCC2, LNBA, VSEL, EN, ENT, CEXT, GND); omits OSEL, OLF, MI, LLC, EXTM for minimal footprint. Use Value: Reduces component count and layout complexity; PowerSO-10 package fits tight tuner module spaces while supporting core 13/14 V operation. |
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 |
|---|---|---|---|
| LNBP15SP-TR | Includes OLF diagnostic pin and MI bypass input; same PowerSO-10 package | Supports overload flag monitoring and master/slave coordination in shared-dish systems | Select when real-time LNB fault reporting or coordinated multi-receiver control is required |
| LNBP20PD-TR | PowerSO-20 package with full pin set (OSEL, OLF, MI, EXTM, LLC); higher thermal capacity (14 W PD) | Enables dual-port independent control, external modulation, and robust thermal handling in high-density designs | Select for advanced receivers needing full feature set, higher current margin, or industrial ambient operation |
Compared with LNBP14SP-TR, LNBP15SP-TR adds diagnostic visibility without increasing size, while LNBP20PD-TR trades compactness for full functionality and thermal headroom-making LNBP14SP-TR optimal for cost-driven dual-port consumer receivers where LLC-based cable compensation suffices.
Availability
LNBP14SP-TR is available at Aetrix Electronics and suitable for satellite receiver design, coaxial LNB power delivery, and DiSEqC™-compliant set-top box production requiring stable component supply and long-term lifecycle support.
Supply support for LNBP14SP-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 microcontrollers, power management ICs, and analog/mixed-signal devices for industrial, automotive, and consumer markets.
The LNBP series targets satellite TV infrastructure, providing integrated LNB supply, tone generation, and protection in single-chip solutions-reducing system complexity versus discrete MOSFET + oscillator + protection designs.
FAQ
What is the maximum coaxial cable length supported by LNBP14SP-TR with LLC compensation?
With LLC pin asserted HIGH, LNBP14SP-TR boosts output by +1 V (typ.), compensating for voltage drop across RG6 coaxial cable. At 500 mA load, this supports up to 45 m of standard RG6 (≈0.3 V/m drop), verified per typical characteristics Figure 3 and Table 5 VO2 specs under LLC=H condition.
Can LNBP14SP-TR drive both LNBA and LNBB simultaneously?
No. LNBP14SP-TR (PowerSO-10) lacks the OSEL pin required for dual-port selection; its pinout supports only LNBA output. LNBB functionality is exclusive to PowerSO-20 variants like LNBP20PD-TR, as confirmed in Table 1 Pin Description where OSEL and LNBB are marked "NA" for all SP-TR types.
Does LNBP14SP-TR require external components for 22 kHz tone generation?
No. The 22 kHz oscillator is fully integrated and factory-trimmed to ±2 kHz tolerance. No external crystal, resistor, or capacitor is needed-only ENT pin control. This is explicitly stated in the Feature Summary and validated in Electrical Characteristics Table 5 (fTONE, ATONE, DTONE parameters).
What thermal management is recommended for continuous 500 mA operation?
At 500 mA and 14 V output, power dissipation is ~3.5 W. With RthJC = 2 °C/W, junction rise is ~7 °C above case. A 25 mm² copper pour (2 oz) under the PowerSO-10 exposed pad reduces RthJA to ~45 °C/W, keeping Tj < 95 °C at 60 °C ambient-per Thermal Data Table 3 and Maximum Ratings Table 2.
LNBP14SP-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
LNBP14SP-TR FAQ
1.How can I place an order for LNBP14SP-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LNBP14SP-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 LNBP14SP-TR reliable?
The price and inventory of LNBP14SP-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LNBP14SP-TR is usually 5 days.
3.What payment methods are accepted for LNBP14SP-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LNBP14SP-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LNBP14SP-TR?
LNBP14SP-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LNBP14SP-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 LNBP14SP-TR?
For technical support, including LNBP14SP-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LNBP14SP-TR requirements.
6.How does Aetrix verify that LNBP14SP-TR is sourced from the original manufacturer or authorized distributors?
All LNBP14SP-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 LNBP14SP-TR meets industry standards.
7.What is the process for return or replacement of LNBP14SP-TR?
All LNBP14SP-TR units undergo pre-shipment inspection (PSI). If there is an issue with LNBP14SP-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 LNBP14SP-TR part is unused and in its original packaging.
Return procedure for LNBP14SP-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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