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HomeProductsPower Supplies - (Board Mount)DC DC ConvertersLMS78_09-0.5R
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LMS78_09-0.5R - GAPTEC Electronic

Manufacturer Part Number
LMS78_09-0.5R
Manufacturer
GAPTEC Electronic
Allelco Part Number
98D-LMS78_09-0.5R
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
35,020 pcs available, New & Original
Parts Description
DC-DC STEP DOWN REGULATORS
Package
3-SIP Module
Data sheet
LMS78_09-0.5R.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 35020
  • Unit Price: $2.215
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.215 $2.22
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LMS78_09-0.5R Tech Specifications
GAPTEC Electronic - LMS78_09-0.5R technical specifications, attributes, parameters and parts with similar specifications to GAPTEC Electronic - LMS78_09-0.5R

Product Attribute Attribute Value
Manufacturer GAPTEC Electronic
Voltage - Output 4 -
Voltage - Output 3 -
Voltage - Output 2 -
Voltage - Output 1 9V
Voltage - Input (Min) 12V
Voltage - Input (Max) 36V
Type Non-Isolated PoL Module
Supplier Device Package -
Standard Number 60950-1
Size / Dimension 0.46" L x 0.30" W x 0.40" H (11.6mm x 7.6mm x 10.2mm)
Series LMS78_0.5R
Product Attribute Attribute Value
Power (Watts) 4.5 W
Package / Case 3-SIP Module
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C (With Derating)
Number of Outputs 1
Mounting Type Through Hole
Features -
Efficiency 90%
Current - Output (Max) 500mA
Control Features -
Approval Agency cURus
Applications ITE (Commercial)

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
ECCN EAR99
HTSUS 8504.40.9580

Frequently Asked Questions(FAQ)

What is the maximum allowable input voltage for the LMS78_09-0.5R non-isolated PoL module when operating within its specified temperature range?
The LMS78_09-0.5R supports an input voltage range from 12V to 36V, with the upper limit of 36V being the absolute maximum under normal operating conditions. Exceeding this value may compromise internal regulation and could lead to failure, especially at elevated ambient temperatures. This constraint must be respected during power budget planning in industrial or commercial ITE applications.
How does the efficiency rating of the LMS78_09-0.5R compare to similar 9V output regulators in the same power class?
With a measured efficiency of 90%, the LMS78_09-0.5R performs comparably to other non-isolated point-of-load modules delivering 4.5W at 9V output. In typical 500mA loads over a 24V input, this translates to approximately 810mW of thermal dissipation—significantly lower than many linear alternatives. When compared to switching regulators of similar footprint and cost, it achieves competitive performance without external compensation components.
Can the LMS78_09-0.5R be used safely in automotive environments given its approval agency certification?
No, the LMS78_09-0.5R is certified only to cURus standards (IEC 60950-1) and is rated for ITE (Information Technology Equipment) use. It is not qualified for automotive-grade operation under ISO 16750 or AEC-Q100 requirements. Its operating temperature range of -40°C to 85°C is standard commercial, not extended automotive, and lacks functional safety approvals such as ISO 26262.
What are the implications of mounting the LMS78_09-0.5R via through-hole on a high-current PCB layout?
The 3-SIP through-hole package requires careful attention to thermal vias and copper area beneath the module to manage the 4.5W power dissipation. Without adequate heatsinking or thermal relief, junction temperatures may exceed limits during sustained 500mA operation, particularly in ambient temperatures above 60°C. Thermal impedance between the module base and PCB should be minimized using multiple ground plane connections.
Is it acceptable to operate the LMS78_09-0.5R near its maximum current rating continuously in a commercial lighting application?
Continuous operation at 500mA draws close to the derating curve’s upper boundary. Given the 85°C maximum operating temperature and 90% efficiency, long-term reliability may degrade if ambient temperatures exceed 50°C. For lighting systems requiring stable 9V rails, derating to 400mA or adding airflow improves margin. Margining below peak ratings enhances lifetime and reduces failure risk.
How does the LMS78_09-0.5R respond to input transients such as those caused by inductive loads in nearby motor circuits?
As a non-isolated buck regulator, the LMS78_09-0.5R has limited immunity to severe input transients unless supplemented with input filtering. Voltage spikes beyond 36V can damage internal switches. Adding an RC snubber or TVS diode at the input is advisable when co-located with inductive loads. The module lacks built-in transient protection, so external mitigation is necessary for robust system design.
What precautions should be taken when replacing the LMS78_09-0.5R with another PoL module in an existing design?
Any replacement must match key electrical characteristics: input range (12–36V), output (9V @ 500mA max), and power dissipation profile. Footprint compatibility is ensured due to the standard 3-SIP form factor, but thermal performance may vary. Efficiency differences directly affect heat buildup—substituting a lower-efficiency part may require redesign of the PCB thermal layer. Always validate stability and output ripple under actual load profiles.
Why might a designer choose the LMS78_09-0.5R over a discrete buck controller solution despite higher unit cost?
The LMS78_09-0.5R offers integrated magnetics, pre-characterized performance, and simplified layout, reducing BOM complexity and development time. For low-to-mid volume commercial ITE designs where board space is constrained, the savings in layout debugging and qualification outweigh the marginal cost premium over assembling a custom switcher. The 90% efficiency also reduces passive cooling needs.
Does the LMS78_09-0.5R support remote sensing or voltage margining features for system diagnostics?
No, the LMS78_09-0.5R provides no remote sense pins or adjustable output control. Output regulation is fixed at 9V with no feedback pin for external adjustment. This simplifies PCB routing but means any need for dynamic voltage scaling or precision load regulation must be handled upstream or via additional post-regulation stages.

Parts with Similar Specifications

The three parts on the right have similar specifications to GAPTEC Electronic LMS78_09-0.5R

Product Attribute LMS78_05-0.5R LMS78_09-2.0R LMS78_09-1.0RL LMS78_12-0.5R
Part Number LMS78_05-0.5R LMS78_09-2.0R LMS78_09-1.0RL LMS78_12-0.5R
Manufacturer GAPTEC Electronic GAPTEC Electronic GAPTEC Electronic GAPTEC Electronic
Size / Dimension - - - -
Voltage - Output 2 - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Current - Output (Max) - - - -
Standard Number - - - -
Number of Outputs - - - -
Approval Agency - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Input (Max) - - - -
Control Features - - - -
Applications - - - -
Type - - - -
Power (Watts) - - - -
Voltage - Output 4 - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Features - - - Simultaneous Sampling
Voltage - Output 3 - - - -
Voltage - Output 1 - - - -
Voltage - Input (Min) - - - -
Efficiency - - - -
Series - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad

LMS78_09-0.5R Datasheet PDF

Download LMS78_09-0.5R pdf datasheets and GAPTEC Electronic documentation for LMS78_09-0.5R - GAPTEC Electronic.

Datasheets
LMS78 Series Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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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.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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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.


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LMS78_09-0.5R Image

LMS78_09-0.5R

GAPTEC Electronic
98D-LMS78_09-0.5R

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

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