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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

STMicroelectronics LNBP10LPUR

Name: LNBP10LPUR
Brand: STMicroelectronics
SKU: LNBP10LPUR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LNBP10LPUR

Manufacturer:: STMicroelectronics

Category:: Special Purpose Regulators

Package:: 8-PowerVDFN

Datasheet:: LNBP10LPUR.pdf

Description:: IC REG CONV RECVRS 1OUT 8DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LNBP10LPUR from STMicroelectronics is a monolithic linear LNB supply and control voltage regulator in DFN8 (5 × 6 mm) package, designed for satellite receiver front-ends to deliver regulated 13 V or 18 V output with ±0.75 V accuracy at 500 mA, external 22 kHz modulation input (EXTM), cable length compensation (LLC), and dynamic short-circuit protection. It powers and controls LNB down-converters in analog/digital satellite receivers.

For engineers reviewing the LNBP10LPUR datasheet, LNBP10LPUR pinout, LNBP10LPUR application, or LNBP10LPUR equivalent, key selection criteria include dual-input voltage selection (VCC1/VCC2), 3-state EN/VSEL logic control for polarization switching, EXTM AC-coupled 22 kHz modulation interface, LLC-based coaxial voltage-drop compensation, and CEXT-timed dynamic overload cycling (TON/TOFF).

Technical Context

The LNBP10LPUR integrates a precision voltage reference, dual-input selector switch, 3-state EN/VSEL decoder, and dynamic current-limit circuitry. Its internal architecture automatically selects VCC1 (15–25 V) for 13 V output mode and VCC2 (22–25 V) for 18 V mode, minimizing power dissipation in DFN8 packaging.

It supports external 22 kHz tone injection via EXTM pin with 400 mV_PP input range and 5.5 V/V gain, while LLC pin adds +1 V (typ.) to selected output for coaxial line loss compensation. Dynamic protection uses CEXT capacitor to set TOFF = 1000 ms (typ.) and TON = TOFF/12 when output is shorted.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltage	13.25 V (typ.) at 500 mA when EN/VSEL = LOW; 18 V (typ.) when EN/VSEL = HIGH - sets LNB polarization (vertical/horizontal)
Output current	500 mA guaranteed - sufficient for standard LNB loads without thermal derating in DFN8 with proper PCB layout
Line regulation	40 mV max - ensures stable output despite ±3 V variation on VCC1/VCC2 inputs
Load regulation	150 mV max - maintains voltage accuracy across full 50–500 mA load range
EXTM gain	5.5 V/V - enables precise 22 kHz AC modulation of DC output using low-amplitude external source
LLC voltage increment	+1 V (typ.) - compensates for up to ~1 V coaxial cable drop at full load
Dynamic protection cycle	TON + TOFF = 1100 ms (typ.) with 4.7 µF CEXT - limits average power dissipation during sustained short-circuit

Pinout & Package

LNBP10LPUR is housed in a thermally enhanced DFN8 (5 × 6 mm) surface-mount package with exposed thermal pad (ePAD). Pin 4 and ePAD are internally connected to GROUND for optimal heat transfer to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1 (VCC1)	Primary input supply	15–25 V input; automatically selected for 13 V output mode to minimize dropout and power loss
2 (VCC2)	Secondary input supply	22–25 V input; automatically selected for 18 V output mode; enables lower dissipation than single-supply IPPAK
3 (OUTPUT)	Regulated LNB supply output	Delivers 13 V or 18 V (±0.75 V) to LNB; supports 22 kHz tone superposition via EXTM or internal oscillator
4 & ePAD (GND)	Power and signal reference	Common ground return for all circuits; ePAD must be soldered to large PCB copper area for thermal management
6 (EN/VSEL)	3-state enable & voltage select	LOW → 13 V; HIGH → 18 V; high-impedance → shutdown - enables remote polarization and power control over coax
5 (EXTM)	External 22 kHz modulation input	AC-coupled input (400 mV_PP, 400 Ω Z); modulates OUTPUT with 5.5× gain - used instead of internal tone generator
8 (LLC)	Line length compensation control	Logic HIGH adds +1 V (typ.) to selected output voltage - corrects coaxial voltage drop for long cable runs
7 (CEXT)	Dynamic protection timing	Connects to 4.7 µF capacitor to GND; sets TOFF = 1000 ms and TON = 83 ms (typ.) for overload cycling

Key Features

Feature	Design Value
Dual-input voltage selection	Reduces power dissipation by >40% vs. single-supply designs: (16 V − 13 V) × 0.35 A = 1.05 W vs. (23 V − 13 V) × 0.35 A = 3.5 W
3-state EN/VSEL interface	Enables three operational states (13 V / 18 V / shutdown) over same control line - eliminates need for separate enable and select signals
External 22 kHz modulation (EXTM)	Accepts low-level AC signal (400 mV_PP) with defined 400 Ω impedance - simplifies integration with MCU-generated tones
Cable length compensation (LLC)	Adds +1 V (typ.) to output under logic HIGH - restores nominal LNB voltage after ≥1 V coaxial drop at full load
Dynamic overload protection	Cycles output ON/OFF (TON/TOFF) using external capacitor - limits average junction temperature during sustained short-circuit

Applications

Digital Satellite Receiver

Multi-LNB Distribution Hub

Use Scenario: Integrated LNB power and control in consumer-grade DVB-S/S2 set-top boxes with single coaxial output.

IC Role / Device Role / Timing Role: Regulates and switches 13/18 V supply, injects 22 kHz tone via EXTM, and compensates for cable loss using LLC.

Use Value: Enables reliable band selection and polarization switching over 30 m coaxial runs without external op-amps or discrete regulators.

Use Scenario: Centralized LNB powering in multiswitch installations serving multiple receivers from one dish.

IC Role / Device Role / Timing Role: Provides isolated, dynamically protected 13/18 V outputs per LNB port with independent EXTM routing.

Use Value: Prevents cross-talk and thermal runaway when multiple LNBs share common ground and coax paths.

Professional Satellite Monitoring Terminal

Marine/Antenna-on-Move System

Use Scenario: Ruggedized satellite signal acquisition unit deployed in field monitoring stations with variable cable lengths.

IC Role / Device Role / Timing Role: Delivers stable LNB voltage under wide input variation (15–25 V), with LLC adjustment for real-time cable calibration.

Use Value: Maintains LNB lock and low-noise operation despite voltage sag from long or corroded coaxial cables.

Use Scenario: Auto-tracking satellite terminals on vessels or vehicles where vibration and thermal cycling stress power integrity.

IC Role / Device Role / Timing Role: Combines thermal shutdown (165 °C), dynamic overload cycling, and dual-supply efficiency to sustain operation in harsh environments.

Use Value: Eliminates need for external thermal sensors or current-sense amplifiers while meeting MIL-STD-810 thermal shock requirements.

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
LNBP10LTR	Same silicon die, tape-and-reel packaging (vs. cut-tape LNBP10LPUR); identical electrical specs and pinout	No functional difference; intended for automated SMT assembly rather than manual or low-volume prototyping	Select LNBP10LTR for high-volume production lines requiring machine placement compatibility
LNBP11LPUR	Includes integrated 22 kHz oscillator (TEN pin) instead of EXTM; otherwise identical DFN8 footprint, VCC1/VCC2, LLC, CEXT	Eliminates need for external tone source but removes flexibility to use MCU-generated or filtered tones	Choose LNBP11LPUR when internal tone generation suffices and board space for external signal path is constrained

Compared with LNBP10LPUR, LNBP10LTR offers identical performance in automated manufacturing, while LNBP11LPUR trades EXTM flexibility for integrated tone generation - both retain DFN8 thermal advantages and cable compensation, making them direct function-matched alternatives for LNB power design.

Availability

LNBP10LPUR is available at Aetrix Electronics and suitable for digital satellite receivers, multi-LNB distribution hubs, professional monitoring terminals, and marine antenna-on-move systems requiring stable component supply, thermal resilience, and coaxial cable compensation.

Supply support for LNBP10LPUR 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

LNBP10LPUR belongs to ST's LNB supply and control regulator product line, engineered specifically for satellite receiver front-end power integrity, polarization switching, and coaxial interface robustness in cost-sensitive, thermally constrained designs.

FAQ

What is the purpose of the CEXT pin on LNBP10LPUR?

The CEXT pin connects to an external capacitor (typically 4.7 µF) to ground and sets the timing for dynamic overload protection. When output current exceeds 550 mA, the device cycles between ON time (TON ≈ TOFF/12) and OFF time (TOFF ≈ 1000 ms), limiting average power dissipation during short-circuit events without requiring external current-sense circuitry.

Can LNBP10LPUR operate with only one input supply voltage?

Yes - VCC1 and VCC2 can be tied together to a single 22–25 V source, though this increases power dissipation in 13 V output mode. For example, with VCC = 23 V and VOUT = 13 V at 500 mA, power loss rises to 5 W versus 1.05 W using dedicated VCC1 = 16 V. A series resistor (e.g., 15 Ω) on VCC1 may mitigate heating in single-supply configurations.

How does the LLC pin affect output voltage accuracy?

The LLC pin adds +1 V (typ.) to the selected output voltage (13 V or 18 V) when driven HIGH, compensating for DC voltage drop across long coaxial cables. This adjustment is factory-trimmed and remains within ±0.1 V tolerance, ensuring LNB receives nominal voltage even after ≥1 V drop at full 500 mA load.

Is the EXTM pin compatible with microcontroller GPIO outputs?

Yes - EXTM accepts 400 mV_PP AC signals with 400 Ω input impedance. A series 1 µF DC-blocking capacitor is required between MCU GPIO and EXTM. The internal gain of 5.5 V/V ensures clean 22 kHz modulation on the OUTPUT pin without additional amplification, provided MCU output swing and drive strength meet minimum 400 mV_PP specification.

LNBP10LPUR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Converter, Analog and Digital Satellite Receivers

Voltage - Input:: 15V ~ 25V

Number of Outputs:: 1

Voltage - Output:: 13.25V, 18V

Operating Temperature:: 0°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerFlat™ (5x6)

LNBP10LPUR FAQ

1.How can I place an order for LNBP10LPUR through Aetrix?

Please submit a Request for Quotation (RFQ) for LNBP10LPUR 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 LNBP10LPUR reliable?

The price and inventory of LNBP10LPUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LNBP10LPUR is usually 5 days.

3.What payment methods are accepted for LNBP10LPUR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LNBP10LPUR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LNBP10LPUR?

LNBP10LPUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LNBP10LPUR 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 LNBP10LPUR?

For technical support, including LNBP10LPUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LNBP10LPUR requirements.

6.How does Aetrix verify that LNBP10LPUR is sourced from the original manufacturer or authorized distributors?

All LNBP10LPUR 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 LNBP10LPUR meets industry standards.

7.What is the process for return or replacement of LNBP10LPUR?

All LNBP10LPUR units undergo pre-shipment inspection (PSI). If there is an issue with LNBP10LPUR, 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 LNBP10LPUR part is unused and in its original packaging.

Return procedure for LNBP10LPUR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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