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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - Special PurposeLNBH26LPQR
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LNBH26LPQR - STMicroelectronics

Manufacturer Part Number
LNBH26LPQR
Manufacturer
STMicroelectronics
Allelco Part Number
32D-LNBH26LPQR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
30,975 pcs available, New & Original
Parts Description
IC REG CONV SAT TV 2OUT 24QFN
Package
24-QFN (4x4)
Data sheet
LNBH26LPQR.pdf

PCN Assembly/Origin

Fab Site 11/May/2017.pdf

PCN Design/Specification

IPG-IPC/14/8692 03/Oct/2014.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 30975
  • Unit Price: $0.884
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.884 $0.88
200+ $0.343 $68.60
500+ $0.33 $165.00
1000+ $0.325 $325.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LNBH26LPQR Tech Specifications
STMicroelectronics - LNBH26LPQR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - LNBH26LPQR

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Output 13V, 18.15V
Voltage - Input 8V ~ 16V
Supplier Device Package 24-QFN (4x4)
Series -
Package / Case 24-VFQFN Exposed Pad
Product Attribute Attribute Value
Package Tape & Reel (TR)
Operating Temperature 0°C ~ 85°C
Number of Outputs 2
Mounting Type Surface Mount
Base Product Number LNBH26
Applications Converter, Analog and Digital Satellite STB Receivers/SatTV

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

LNBH26LPQR Image
LNBH26LPQR (1)

Manufacturer Part Number

LNBH26LPQR

Manufacturer

STMicroelectronics

Introduction

The LNBH26LPQR is a specialized Power Management Integrated Circuit designed for powering Low Noise Block downconverters in satellite set-top boxes.

Product Features and Performance

Dual Output Voltages for Horizontal and Vertical Polarizations (13V, 18.15V)

Supports DiSEqC 2.x communication protocol

Capable of Withstanding High Power Demands

Integrated Over-Temperature Protection

Low-Power Standby Mode

Product Advantages

Efficient Power Conversion

Built-In Protection Features Enhance Longevity

Designed Specifically for SatTV Applications

Seamless operation with Analog and Digital STB Receivers

High integration reduces system complexity

Key Technical Parameters

Voltage - Input Range: 8V to 16V

Number of Outputs: 2

Voltage - Output: 13V, 18.15V

Operating Temperature Range: 0°C to 85°C

Quality and Safety Features

Over-Current and Short-Circuit Protection

Thermal Shutdown Feature

Compatibility

Designed for Converter Applications in Satellite STB Receivers

Application Areas

Satellite Set-Top Boxes (STB)

SatTV Receivers

Analog and Digital Broadcast Equipment

Product Lifecycle

Currently Active

No Indication of Near Discontinuation

Replacement and Upgrade Options Typically Available through Manufacturer

Several Key Reasons to Choose This Product

Optimal Efficiency for Powering LNB in Satellite Systems

Compatible with Latest Communication Protocols for Satellite STBs

Robust Protection Mechanisms Ensure Reliable Operation

High Integration Simplifies Circuit Design

STMicroelectronics' Renowned Quality and Reliability

Frequently Asked Questions(FAQ)

How does the LNBH26LPQR handle input voltage fluctuations between 8V and 16V in satellite set-top box power architectures, and what design considerations arise from this range?
The LNBH26LPQR is designed to operate reliably within an input voltage window of 8V to 16V, which aligns with common satellite receiver supply rails derived from unregulated DC sources or battery-backed systems. This range supports compatibility across diverse regional power standards and transient conditions without requiring additional pre-regulation stages. Engineers should ensure that bulk capacitance at the input provides sufficient hold-up during voltage dips, especially when driving capacitive loads such as LNBs (Local Oscillator Noise Blocks) through its regulated outputs. A minimum input capacitance of 10µF ceramic with low ESL is typically recommended to suppress high-frequency ripple and maintain stability under load transients.
What are the key differences between using the LNBH26LPQR and alternative dual-output regulators for satellite TV applications, particularly in terms of efficiency and thermal performance?
Compared to discrete linear regulator solutions or older-generation switching converters, the LNBH26LPQR integrates two independent buck regulators optimized for low quiescent current and high efficiency at light loads—critical in standby modes typical of digital satellite receivers. While it may not match the peak efficiency of newer wide-input GaN-based converters, its 85% efficiency at 13V/100mA output makes it suitable for cost-sensitive designs where board space and integration outweigh marginal gains in power savings. Thermal derating is minimal due to the compact 24-QFN package with exposed pad, but sustained full-load operation above 70°C ambient may require airflow or layout optimization to avoid junction temperature limits.
Can the LNBH26LPQR be used in a system requiring one output at 13V and another adjustable up to 18.15V, and how does internal feedback configuration affect component selection?
Yes, the LNBH26LPQR delivers fixed 13V and 18.15V outputs by default, which correspond to standard LNB bias voltages (13V for standard LNBs, 18.15V for extended-range models). These values are factory-set via internal resistors; they cannot be adjusted externally without redesigning the feedback network. To modify the 18.15V rail, users must bypass the internal divider and implement an external resistor divider connected to FB2. In such cases, inductor value and output capacitor ESR become critical—recommended values are 22µH for L1/L2 and 10µF X7R ceramic capacitors per channel to maintain phase margin and minimize output ripple below 50mVpp.
What precautions should engineers take when integrating the LNBH26LPQR into a PCB layout to ensure reliable operation and compliance with electromagnetic interference requirements?
The LNBH26LPQR benefits significantly from careful PCB layout due to its high switching frequencies (typically 1.2MHz). High-current paths—especially the SW node to inductor and back to GND—must be short and wide to reduce loop inductance. The exposed pad must be soldered directly to a solid ground plane to ensure thermal dissipation and electrical continuity. Input and output capacitors should be placed within 1mm of the device pins. Additionally, a ferrite bead may be needed on the input if conducted emissions exceed FCC Class B limits, particularly near the 1.2MHz harmonic band. Proper grounding minimizes ground bounce and improves PSRR, which is essential when feeding sensitive RF front-ends downstream.
How does the operating temperature range of 0°C to 85°C influence long-term reliability in outdoor or climate-controlled satellite reception environments?
The commercial temperature grade of 0°C to 85°C ensures robust performance in most indoor and sheltered outdoor installations but excludes extreme industrial or automotive environments. Over time, thermal cycling within this range can induce solder joint fatigue or encapsulant degradation, though the MSL 1 rating indicates no significant moisture sensitivity during assembly. For systems deployed in regions with seasonal temperature swings exceeding this range, derating the maximum junction temperature by 10–15°C is prudent. Engineers should verify that local hot spots do not exceed 85°C even during worst-case load conditions, especially if airflow is restricted or multiple ICs share a dense thermal mass.
Is it feasible to parallel the two output channels of the LNBH26LPQR to increase total current delivery for high-power LNBs, and what risks does this introduce?
Parallel operation of the LNBH26LPQR’s outputs is generally not recommended because the channels lack built-in current sharing mechanisms. Mismatched regulation tolerances (±5% typical) could lead to unequal current distribution, causing one channel to overload while the other remains underutilized. This imbalance increases stress on the higher-current channel, potentially leading to premature failure. If higher current is required, designers should instead select a single-output converter rated for the total demand or use the LNBH26LPQR with an external pass transistor in boost mode, though this complicates control loop dynamics and stability analysis.
How does the LNBH26LPQR support power sequencing in multi-voltage satellite systems, and can it be synchronized with other timing-critical components?
The LNBH26LPQR lacks dedicated enable pins or sequencing logic, so power-on timing depends on external biasing of its EN inputs or direct connection to the main supply. Without active sequencing, all outputs ramp simultaneously, which may violate requirements for downstream ASICs or tuners that require specific voltage ordering. To address this, engineers can add RC delays to each EN pin or integrate with a dedicated power management IC that controls the LNBH26LPQR’s enable lines based on system state. Clock synchronization is also limited—while internal oscillators are fixed at ~1.2MHz, there is no PLL or sync input to coordinate with other switchers, so EMI mitigation relies on layout and filtering rather than frequency dithering or spread spectrum.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics LNBH26LPQR

Product Attribute LNBH26LSPQR LNBH25LPQR LNBH25LSPQR LNBH26SPQR
Part Number LNBH26LSPQR LNBH25LPQR LNBH25LSPQR LNBH26SPQR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Applications - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Number of Outputs - - - -
Voltage - Output - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Input - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42

LNBH26LPQR Datasheet PDF

Download LNBH26LPQR pdf datasheets and STMicroelectronics documentation for LNBH26LPQR - STMicroelectronics.

PCN Assembly/Origin
Fab Site 11/May/2017.pdf
PCN Design/Specification
IPG-IPC/14/8692 03/Oct/2014.pdf

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Payment Support

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Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
LNBH26LPQR Image

LNBH26LPQR

STMicroelectronics
32D-LNBH26LPQR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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