Part Information Review and Update

flux

1:25

Reviewing the bill of materials.

Analyzing the PCB layout.

Analyzing the schematic.

Looking for "TM1814 exact manufacturer name, part description, package type, pin count, pin names and functions, ordering/package information, key electrical specs, and any recommended application information." in TM1814-TitanMicro.pdf

Looking for "TM1814 complete pin table with pin numbers, pin names, and pin descriptions/functions for all pins." in TM1814-TitanMicro.pdf

Looking for "TM1814 package dimensions, package name, and any footprint-relevant mechanical drawing information." in TM1814-TitanMicro.pdf

I reviewed the part project against the datasheet already linked in the project, so no Datasheet URL update was needed. The main checks I used were: exact pin-count match, datasheet as source of truth for pin names/functions, and comparison of existing project properties/terminals against the datasheet metadata
Current part info review

Project metadata currently present

FieldCurrent valueStatus
MPNTM1814Good
Manufacturer NameTITAN MICRO ELECTRONICSClose, but datasheet indicates Shenzhen Titan Micro Electronics Co., Ltd.
Part TypeOptoelectronic DevicesBroad but acceptable
Designator PrefixICUnusual for Flux parts; typically U for ICs per part-project guidance
Datasheet URLSetGood
Package / Case CodeMissingShould be added as SOP-8 / SOP8
DescriptionFour Channels LED Constant Current Driving Private CircuitPresent, but awkwardly worded

Datasheet-derived part summary

ItemDatasheet finding
Function4-channel LED constant-current driver IC
PackageSOP-8
Pin count8
Supply4.5 V to 6.5 V on VDD
Higher input optionBuilt-in 5 V regulator with series resistor allows 6 V to 24 V supply usage
Output type4 open-drain constant-current outputs
Output current6.5 mA to 38 mA, 64-step adjustable
Brightness control256-level PWM
Data interfaceSingle-wire cascade, DIN in / DO out
Data rate800 kHz external-control mode, 500 kHz internal-control mode
Output withstand24 V OFF-state recommended operating figure, 32 V withstand called out in features
Power dissipation250 mW at 25 °C
Pin cross-check

Datasheet pin table vs current schematic symbol

Pin #Datasheet pinCurrent terminalMatch
1OUTROUTRYes
2OUTGOUTGYes
3OUTBOUTBYes
4GNDGNDYes
5DODOYes
6DINDINYes
7VDDVDDYes
8OUTWOUTWYes
Symbol review
  • Pin count matches exactly: 8 / 8
  • Pin names and pin numbers match
  • The symbol arrangement is sensible for an 8-pin IC:
    • outputs/power split across sides
    • data pins grouped on one side
  • No missing or extra terminals detected
Footprint review
  • The layout contains exactly 8 pads, named to match the 8 pins:
  • That is consistent with the datasheet’s SOP-8 package and 1.27 mm pitch.
  • I could verify pad naming/count consistency, but the current layout data did not expose pad dimensions or geometry, so I could not fully confirm land-pattern dimensions against the mechanical drawing.
Mismatches / gaps found

Definite gaps

AreaFinding
Package metadataMissing Package or Case Code property
Pin typesAll terminals currently have Pin Type = Unspecified
Pin descriptionsNo Pin Description properties are present
Description qualityCurrent description is not clean library-style wording
Manufacturer nameCurrent manufacturer value is less exact than datasheet wording
Recommended pin typing
Per part-project pin auditing practice, IC-style pins should have explicit types and structured metadata rather than staying Unspecified

Table

TerminalRecommended Pin TypeShort Pin Description
OUTROutputRed channel current sink
OUTGOutputGreen channel current sink
OUTBOutputBlue channel current sink
GNDGroundPower ground
DOOutputSerial data output
DINInputSerial data input
VDDPower InPositive supply input
OUTWOutputWhite channel current sink

Suggested metadata cleanup

FieldSuggested value
Description4-channel LED constant-current driver, SOP-8, 6.5 mA to 38 mA/channel, single-wire cascade interface
Manufacturer NameShenzhen Titan Micro Electronics Co., Ltd.
Package or Case CodeSOP-8
Designator PrefixU
Operating Voltage6.5 V
Implementation DetailsBuilt-in 5 V regulator for higher supply via series resistor; 4 open-drain constant-current outputs; 64-step current setting; 256-level PWM; single-wire cascade DIN/DO
Bottom line
  • Good: MPN, datasheet URL, pin count, pin numbering, pin names, and 8-pad footprint mapping all look consistent.
  • Needs improvement: package metadata, library-style description, exact manufacturer string, pin types, and pin descriptions.
  • No hard pinout mismatch found.
  • No full mechanical footprint mismatch proven, but pad geometry could not be fully audited from the available layout data.
If you want, I can apply the cleanup now:
  • update project properties/description
  • set pin types
  • add short pin descriptions for all 8 terminals
Clean up metadata
Fix designator prefix
Tighten description text
Check footprint dimensions
8 days
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TM1814

TM1814 thumbnail
TM1814 is four channels LED constant current adjustable driver IC with function of internal control synchronizing, which can achieve a wide range of display as MCU inputs one group of data set by constant current and PWM to TM1814. When input signal is disconnected, it can realize synchronized fixation of colorful pattern change and prevent in-operation of subsequent cascade chip caused by chip damage. Internal chip is integrated with MCU solidification program and single wire digital interface, data flip-latch, LED constant current driver, circuit, etc. Internal VDD pin is integrated with 5V regulator with less peripheral devices, which applies to guardrail tube, point source and LED decorative products. This product has excellent performance and reliable quality. Features  Adopt power CMOS technology  Withstand voltage of OUT output port is 32V  5 V voltage-regulator tube is built into VDD, and the voltage supports 6-24 V after cascading the resistor  Constant current can achieve level 64 adjustment (6.5 mA-38mA)  PWM brightness controls circuit, and 256 brightness is adjustable  Accurate current output value Maximum error (between channels): ±3% Maximum error (between chips): ±5%  Single line serial concatenated port  Oscillation mode: build in RC vibration and conduct clock synchronization according to signals on data line. After receiving the data from this unit, it can reproduce follow-up data and send it to lower level through data output end, and signals will not be distorted and reduced along with cascade  Build in power on reset circuit, and after powering on reset, all registers are initialized to zero  External control mode data transmission rate is 800 KHZ  Internal control mode data transmission rate is 500 KHZ  Internal control mode chip sends 2048 points of data  Encapsulation mode: SOP8 #CommonPartsLibrary #IntegratedCircuit

Properties

TM1814

TITAN MICRO ELECTRONICS

Optoelectronic Devices

superlightingled.com/PDF/TM1814-TitanMicro.pdf

IC

creativecommons.org/licenses/by/4.0/

Pricing & Availability

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