Titan Micro Electronics (天微电子) does not sell one famous part. It sells a family of display driver ICs that appear on the control boards of small appliances, energy meters, LED panels and consumer electronics worldwide — and most overseas buyers discover the company through a single model number they found on a broken board or in someone else’s BOM.
That is the practical problem this page solves. If you know you need a TM1637, our model pages will quote you a TM1637. But if you are a purchasing manager building a mixed BOM, or a design engineer replacing a discontinued driver, the real question is which of the roughly ten Titan Micro display driver parts your product actually needs — and which of them can be sourced from one supplier on one shipment instead of five.
Below is the portfolio as a distributor sees it: sorted by function, mapped by package, with the decision rules that separate one part from another, and the cases where we will tell you the part is wrong for your design.
What Titan Micro Electronics Actually Makes
The portfolio divides into three functional groups, and the split matters because buyers regularly order across it by mistake.
- LED segment drivers — drive multiplexed LED digit and dot modules. TM1637, TM1640, TM1650, TM1628, TM1638, TM1668, TM1616.
- LCD segment drivers — drive LCD glass, not LED. TM1621B, TM1621C, TM1621D.
- Specialty and cascaded LED drivers — addressed LED and measurement parts that sit outside the display driver mainstream: TM1804, TM1812, TM1814, TM512 series, TM7711, TM16C21.
The first two groups are the volume business and the ones overseas buyers search for by model number. The third group is where enquiries are rising fastest, because those parts are harder to find outside China and buyers are often reversing an existing design.
All Titan Micro parts are manufactured in China. Titan Micro has no dedicated export sales desk, which is the single most common reason overseas buyers cannot get a straight quotation or a firm delivery date directly — and the reason a distributor with export experience exists in this supply chain at all.
The LED Segment Driver Family: Seven Parts, One Job
Every part in this group does the same job: take serial data from an MCU and drive a multiplexed LED display, with constant-current outputs and software-set brightness. The differences that decide a purchase are digit count, logic voltage, wire count and whether keyboard scanning is built in.
| Model | Function | Display Capability | Interface | Supply Voltage | Keyboard Scan | Package |
|---|---|---|---|---|---|---|
| TM1637 | LED display driver | 8 seg × 6 bit | 2-wire serial | 5 V | Yes | SOP20 / DIP20 |
| TM1640 | LED panel driver | 8 seg × 16 bit (128 dots) | 2-wire serial | 5 V | No | SOP28 / SSOP28 |
| TM1650 | LED display driver | 8 seg × 4 bit / 7 seg × 4 bit | 2-wire serial | 2.8–5.5 V | Yes | SOP16 / DIP16 |
| TM1628 | LED display driver | 10 seg × 7 bit to 13 seg × 4 bit | 3-wire serial | 5 V | Yes | SOP28 |
| TM1638 | LED display driver | 10 seg × 8 bit | 3-wire serial | 5 V | Yes | SOP28 |
| TM1668 | LED display driver | 10 seg × 7 bit | 3-wire serial | 3.3–5.5 V | Yes | SOP24 / SSOP24 |
| TM1616 | Compact LED driver | 7 seg × 4 bit | 2-wire serial | 2.8–5.5 V | No | SOP16 / DIP16 |
Read the table by column, not by model number. The two columns that eliminate parts fastest are supply voltage and keyboard scan. If your MCU bus runs at 3.3 V, you are already down to TM1650, TM1668 and TM1616. If your panel has buttons, you are down to TM1637, TM1650, TM1628, TM1638 and TM1668. The intersection of those two conditions is TM1650 and TM1668 — which is exactly why those two models carry the compact appliance and 3.3 V panel business.
TM1640 deserves a separate note because it is the one part in the group that carries no key scan and the largest matrix, at 128 dots. It is the correct choice for pure LED panel and dot-matrix modules where every pin must go to the display. It is the wrong choice for any board that also reads buttons — a distinction we will come back to below.
Model-level detail, price and stock for each of these parts is on its own page, and the model numbers in the table above link to them. If you already know your model number, start there rather than here. If you are choosing between two specific parts, we have already published the head-to-head work: TM1637 vs TM1650, TM1650 vs HT16K33, TM1640 vs MAX7219, TM1628 vs HT1628, TM1668 vs TM1628, TM1616 vs TM1650 and the three-way TM1637 vs TM1638 vs TM1650.
Two pages on this site already cover the LED family in depth, and this article is deliberately not a third version of them. The Titan Micro LED driver IC selection guide goes model by model through the LED parts alone, and Best LED driver for digital display applications works from the application backwards. This page is the portfolio view: LED plus LCD plus the specialty series, mapped by function and package.
The LCD Segment Driver Family: TM1621B, TM1621C, TM1621D
This is the group that causes the most mis-orders in the whole portfolio. These are LCD drivers. They drive glass, not LED modules, and no amount of rework turns a TM1621B into a TM1650. Design teams order it expecting an LED driver often enough that we now confirm the display type in writing before quoting it.
| Model | Function | Interface | Package | Where it lands |
|---|---|---|---|---|
| TM1621B | LCD segment driver, RAM-mapping | 4-wire serial | SSOP48 / LQFP44 | Energy meters, thermostats, instruments |
| TM1621C | LCD segment driver | 4-wire serial | SOP28 | Meter and thermostat boards with tighter area |
| TM1621D | LCD segment driver | 4-wire serial | QSOP24 | Smallest board area of the three |
All three are memory-mapped segment drivers on a 4-wire serial bus. The functional difference buyers hit first is board area and pin count, not capability — the C and D variants exist so that a design can hold the same display behaviour in a smaller package. Supply voltage and drive configuration for the C and D variants should be confirmed against the current datasheet revision before you commit a PCB; these are not interchangeable with TM1621B purely on function.
Energy metering is the volume application here, followed by thermostats and measurement instruments. If you are building for the Indian or Southeast Asian metering market, TM1621B is the part your design house has probably already specified, and volume availability is generally better than for the C and D variants. Buyers benchmarking it against the Holtek alternative should read our TM1621B vs HT1621B comparison, and for the wider brand picture there is the Titan Micro vs HT series comparison.
The Specialty Series Buyers Are Already Asking For
Outside the two main families sits a group of parts that overseas buyers request by number, usually because they are reverse-engineering a product or copying a reference design that already uses them. They are genuinely part of the portfolio, but they are not display segment drivers, and they are not interchangeable with anything in the tables above.
| Model | Function as sourced |
|---|---|
| TM1804 | Single-wire cascaded LED driver — decorative lighting and light bars |
| TM1812 | Multi-channel cascaded LED driver — RGB lighting and display boards |
| TM1814 | Constant-current addressable LED driver — addressable LED strips |
| TM512 series | DMX512 / RS-485 LED control family — stage and architectural lighting |
| TM7711 | 24-bit sigma-delta ADC — load-cell scales and measurement front ends |
| TM16C21 | LCD driver variant requested for segment LCD products |
We deliberately do not publish a full specification table for this group. Channel counts, protocol details and package options are still moving through datasheet revisions for several of these parts, and a second-hand specification reproduced on a distributor page is worse than no specification at all — it is a number your engineer will design against. Send us the target function and we will confirm the current revision, package and order position in writing before you commit a board.
If your sourcing problem is wider than one part — you are choosing between channels, or vetting a supplier for the first time — start with Where to buy Titan Micro IC chips online and How to select a reliable IC supplier from China. Both deal with the commercial side rather than the portfolio side.
Which Family Does Your Design Need? Five Questions
Work down the list. Each question removes parts, and by the end you have a candidate or a shortlist to request quotations on.
- Is the display LCD glass or an LED module? LCD glass → TM1621B / TM1621C / TM1621D. LED module → everything in the LED table.
- How many digits, and do you need dots? Four digits or fewer → TM1650 or TM1616. Four to six digits on a 5 V rail → TM1637. More than six digits, or a dot matrix → TM1640, TM1628, TM1638 or TM1668.
- Do you need key scanning on the same chip? Display only → TM1640 or TM1616. Keys required → TM1637, TM1650, TM1628, TM1638 or TM1668.
- What is the logic rail? 3.3 V only → TM1650, TM1668 or TM1616. A true 5 V rail → TM1637, TM1640, TM1628 or TM1638.
- How many MCU pins can you spare? Two wires → TM1637, TM1640, TM1650 or TM1616. Three wires → TM1628, TM1638 or TM1668. Four wires → TM1621B, TM1621C or TM1621D.
The output of that sequence is normally one of five answers, and they cover most enquiries we receive: TM1650 for compact 3.3 V appliance panels with keys, TM1637 for classic 5 V four-to-six digit displays, TM1640 for keyless dot-matrix panels, TM1628 or TM1668 for wider panels with a key matrix, and TM1621B for LCD glass. If your answer is one of the specialty parts, skip to the enquiry — those need confirming rather than selecting.
Package and Pin Map: What Can Replace What
Package is often the real constraint, because it decides whether you can rework a board, whether the part fits your existing footprint, and whether a second source is even possible. This is the practical map of the portfolio by package.
| Package family | Parts | Typical board situation |
|---|---|---|
| SOP16 / DIP16 | TM1650, TM1616 | Compact 3.3–5 V panels; DIP for easy rework and small-batch assembly |
| SOP20 / DIP20 | TM1637 | Classic 4–6 digit displays; through-hole option still widely used |
| SOP24 / SSOP24 | TM1668 | Slim panels on a 3.3 V rail, wider digit count than SOP16 |
| SOP28 | TM1628, TM1638, TM1621C | Wide digit counts with key matrices; LCD variant in TM1621C |
| SSOP28 | TM1640 | Dense LED dot-matrix panels, display only |
| SSOP48 / LQFP44 | TM1621B | LCD glass, metering and instrument boards |
| QSOP24 | TM1621D | Smallest board area LCD variant |
One warning that saves redesigns: matching pin count does not mean matching firmware. TM1650 and TM1616 share the SOP16 footprint but are different devices with different register behaviour and different feature sets. The same is true within SOP28, where TM1628, TM1638 and TM1621C sit — two of them are LED drivers and one is an LCD driver. Treat the package table as a footprint guide only, and confirm the protocol and the driver before you swap a part on an existing board.
Titan Micro display driver portfolio: where it does not belong
Specification tables tell you what a part can do. Design failures come from what it cannot do. Before you commit a Titan Micro display driver portfolio to a production board, check these cases — if any of them applies to your design, this is the wrong part and we will say so.
- your design drives power LEDs or any LED string above logic level — none of these parts is a constant-current power LED driver. The TM16xx family drives multiplexed segment and dot displays. A 12 V or 24 V LED string needs a different architecture entirely — do not substitute, and do not let a supplier tell you these are equivalent.
- your MCU bus runs at 3.3 V — TM1637, TM1640, TM1628 and TM1638 are 5 V devices. Do not use them as level translators. Use TM1650 or TM1616 (2.8–5.5 V), or TM1668 (3.3–5.5 V).
- your panel has buttons and you specified TM1640 or TM1616 — both are display-only parts with no keyboard scan. This is the wrong part for the board. Move to TM1637, TM1650, TM1628, TM1638 or TM1668.
- your display is LCD glass — only TM1621B, TM1621C and TM1621D drive LCD segments. Nothing in the LED family will work, in any package, at any voltage. This is the single most common mis-order in the portfolio.
- you need a dot matrix larger than 128 dots on one device — TM1640 tops out at 8 seg × 16 bit (128 dots). Beyond that, plan for multiple drivers on the bus rather than searching for a larger single part.
- you are designing in TM1804, TM1812, TM1814, TM512 or TM7711 — these are not display segment drivers. Confirm the current datasheet revision with us before you commit a PCB — the addressing protocol and channel configuration are not interchangeable with the TM16xx display family.
- an existing board must be re-laid with a different part in the same package — the same pin count does not mean the same firmware. TM1650 and TM1616 both sit in SOP16 but are different devices; TM1628, TM1638 and TM1621C all sit in SOP28, and two of them are LED drivers while one is an LCD driver. Verify the protocol and the driver before swapping.
Working with Newfly: the numbers
Buyers evaluating a supplier want the commercial parameters stated, not implied. Here is ours. Where a figure depends on your quantity, package or destination, we say so rather than publishing a number that will not hold.
| Item | What we commit to |
|---|---|
| Sample order | Sample and small-batch quantities are supported. Sample fee, freight terms and dispatch time are confirmed in writing with each quotation. |
| Minimum order | Flexible. We support partial-reel and small-batch quantities for first orders and scale with you. |
| Lead time | Confirmed in writing per order, against the quantity and destination you specify. |
| Inspection | Marking, packaging and date-code verification before dispatch. Tell us your acceptance criteria and we will align to them. |
| Defect claims | The defect resolution process is agreed in writing before the order, not after a problem appears. |
How a First Order Actually Runs
Most buyers sourcing a mixed Titan Micro BOM for the first time want to know the sequence before they talk to anyone. This is ours, and it is deliberately front-loaded — the checks happen before money moves, not after.
- You send the requirement. Part number, package, quantity, destination country, and the acceptance criteria you will test against. If the criteria are your own internal standard, send them; we align to them rather than to a generic promise.
- We confirm the actual position. For each line we state whether the goods are on hand or produced to order, and we state the origin and date-code position we are quoting against. If two lines in your BOM behave differently, you are told which is which instead of being given one blanket date.
- Samples are drawn from the same stock position as the production order. This is the point of a sample: units from the lot you will actually receive, not a hand-picked demonstration reel. Testing a sample that came from a different lot tells you almost nothing about your production risk.
- You validate on your own bench. Display behaviour, brightness steps, key-scan response, and whatever else your production test covers. Do not order production until you have run your own acceptance criteria — our test regime is not a substitute for yours.
- The production order proceeds against the confirmed specification. The same part, package and origin you validated, with the shipping documents you need for your destination.
We do not publish blanket figures for sample fee, sample dispatch time, MOQ or production lead time, because the honest answer changes with package, origin and quantity, and a published number that does not hold is worth less than no number at all. What we commit to in the table above is the structure: every commercial parameter is confirmed in writing with your quotation, before you commit.
When we tell you not to buy
A supplier who accepts every enquiry without question is not screening anything. These are the situations where we will recommend against the purchase:
- Your annual volume is a few hundred pieces and you are buying at retail or catalogue prices — buy locally. On a small mixed BOM, import freight and customs usually cost more than the unit-price difference is worth.
- You need a part that exists only in the grey market, with no traceable origin and inconsistent date codes. We will describe the risk instead of quoting it as if it were normal stock.
- Your design needs a 5 V part on a 3.3 V bus and you have no level shifting. You do not need a cheaper TM1637 — you need TM1650 or TM1616. We will tell you that rather than sell you the wrong part.
- You are buying a full carton to hold speculative stock for a project that is not yet funded, out of working capital. We will say so before you commit.
- Your procurement rules require a franchised-channel paper trail that only the manufacturer’s own authorised channel can issue. We are an export distributor, not the franchised channel. If franchised traceability is mandatory for that line, we are not your supplier for it.
- Your target price can only be met with a lot we cannot verify as original Titan Micro product. We will decline the order rather than ship an unverifiable lot.
Sourcing the Whole Portfolio from One Distributor
The case for consolidating a Titan Micro display driver BOM with one export-experienced distributor is not price alone. It is failure mode. When a mixed BOM is split across three or four open-market channels, the following happens on a predictable schedule:
- The lines arrive on different dates, and your production line waits for the slowest one while the fastest one sits in a warehouse. A single supplier can ship a consolidated order against one confirmed date.
- Traceability fragments. When a batch fails final test, you need to know which supplier shipped which date codes. Four channels means four separate investigations, and one of them will simply stop answering.
- The wrong family gets ordered — an LCD driver specified where an LED driver was needed, or a 5 V part dropped into a 3.3 V design. A supplier who sells the whole portfolio sees that conflict at the quotation stage and can stop it.
- Nobody owns the substitution. Reel size, marking, packing and date-code expectations are set per line, and with a consolidated order they are set once.
This is the practical reason a distributor with real export experience sits between you and the factory. Titan Micro has no dedicated foreign trade sales team and the factory quotes are structured around domestic production volume, not around an overseas purchasing manager who needs three reels this month and a full carton next quarter. That gap is the service, not a markup on it — and it is the same subject we cover in Titan Micro IC distributor China and in our TM IC sourcing guide.
Why Choose Newfly Electronics
Newfly Electronics supplies original Titan Micro display driver ICs to overseas manufacturers, design houses and distributors. The portfolio view above is how we quote: as a family, with the substitution and boundary rules applied before you order, rather than a model-by-model list you have to reconcile yourself.
- Full portfolio in one place — LED segment drivers, LCD segment drivers and the specialty series on one order, one shipment, one set of documents.
- China supply chain pricing — sourced against the domestic manufacturing market rather than through an international catalogue with layered margins.
- Small quantity and bulk orders — partial-reel and small-batch quantities for first orders and for prototype builds, scaling to production volumes and full cartons on repeat orders.
- Technical support — we will tell you when the part you asked for is wrong for your rail, your package or your display type. That includes pointing you at a different Titan Micro model rather than quoting what you asked for.
- Export experience — documentation, packing and shipping handled for India, Southeast Asia, the Middle East, Europe and the USA as a matter of routine.
Full stock and price information for individual models is on each model page linked throughout this article, and every one of them is authorised to quote on the portfolio as a whole. Buyers with an established multi-project relationship should read Where to buy original Titan Micro ICs for international projects for the process we run on repeat orders.
FAQ: Titan Micro IC Portfolio
Where can I buy the full Titan Micro IC range from one supplier?
Newfly Electronics supplies the LED driver family, the LCD driver family and the specialty series on a single order. Send your full BOM and we will quote it line by line, flagging any line where the part is wrong for the application.
Is TM1637 still available in production quantities?
Yes. TM1637 remains one of the highest-demand Titan Micro parts and we quote it in SOP20 and DIP20. Confirm current stock position with your quantity, because availability fluctuates with domestic demand.
What is the difference between the TM1637 and TM1650 product lines?
TM1637 is a 5 V part with a 6-digit × 8-segment matrix; TM1650 is a 2.8–5.5 V part with a 4-digit matrix in a smaller SOP16 package. TM1650 is the correct choice for 3.3 V designs, TM1637 for classic 5 V four-to-six digit displays.
Can you supply a mixed BOM of several Titan Micro driver ICs in one shipment?
Yes, and it is the normal way we handle mixed display driver BOMs. One confirmed date and one set of export documents instead of several.
Do you provide datasheets?
Yes. We supply the datasheet revision we are quoting against for the specific part and package, so your engineering team is designing against the same revision as the goods you receive.
What is your MOQ and lead time?
Both depend on the part, the package and whether the goods are on hand or produced to order, so we confirm them in writing with each quotation rather than publishing a figure that will not hold. Sample and small-batch quantities are supported for first orders.
Can you source TM1804, TM1814, TM7711 or the TM512 series?
These are quotable on enquiry. We confirm the current datasheet revision, channel configuration and package before quoting, rather than reproducing a specification we have not verified.
How do I verify the parts are original Titan Micro product?
Confirm marking, date-code consistency and the origin position quoted, then run your own acceptance criteria on a sample drawn from the same stock lot as the production order. If a channel cannot tell you which lot your sample came from, that is the answer to your question.
Request a Quotation
Send us the part number, the package and the quantity you need. We will reply with price, confirmed stock and lead time for the the Titan Micro portfolio.
See also the TM1637 supplier page. See also the TM1650 supplier page. See also the TM1621B LCD driver supplier page. See also the Titan Micro LED driver IC selection guide.
Contact Newfly Electronics
Email: sales@newflyelectronics.com
WhatsApp: +86 15112635657