Year: 2026

TM1628 PDF Datasheet – LED Controller Driver

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This is a multifunction LED driver controller designed for key scanning and display management, supporting up to 11 segment outputs and 6–7 grid outputs in a compact integrated circuit.

Part Number: TM1628

Function: LED Controller Driver

Package: SO 28 Pin Type

Manufacturer: Shenzhen Titan Micro Electronics, Goston

Images:TM1628 pdf datasheet

Description

The TM1628 is an LED Controller driven on a 1/7 to 1/8 duty factor. Eleven segment output lines, six grid output lines, 1 segment/grid output lines, one display memory, control circuit, key scan circuit are all incorporated into a single chip to build a highly reliable peripheral device for a single chip microcomputer. Serial data is fed to TM1628 via a three-line serial interface.

It integrates display memory, control logic, and an 8-step dimming circuit while operating through a simple three-wire serial interface. This device is commonly used in embedded systems requiring LED display control and keypad interfacing such as home appliances and consumer electronics.

Features

  • CMOS technology ensuring low power consumption
  • Supports multiple display configurations from 11 segments / 7 grids to 12 segments / 6 grids
  • Integrated key scanning function supporting 8 × 2 matrix
  • Built-in 8-level brightness control for LED dimming
  • Three-wire serial interface (CLK, DIO, STB) for easy MCU communication
  • Internal display RAM for segment data storage
  • High integration reduces external component count

Pinouts

TM1628 pinout

LED controller drivers are used in a wide range of applications, including residential and commercial lighting, automotive lighting, signage, displays, and more. Choosing the right LED driver is crucial to ensure the optimal performance and longevity of LEDs in a specific application.

How to Choose This Part

  • Select when both LED driving and key scanning are required in one IC
  • Ideal for reducing MCU GPIO usage via serial interface
  • Suitable for medium-sized segment displays with multiplexing
  • Choose based on required segment/grid configuration
  • Consider alternatives if higher current driving or larger displays are needed

Applications

  • Consumer electronics display panels
  • Microwave ovens and washing machine interfaces
  • Audio system front panels
  • Digital clocks and timers
  • Embedded system user interfaces
  • Instrumentation displays with keypad input

Alternative / Equivalent Products

  • TM1638 LED driver with extended key scan capability
  • HT1628 LCD/LED driver controller
  • MAX7219 LED display driver for serial interfacing
  • PT6961 LED driver with key scan function
  • FD650 LED controller for similar display applications

TM1628 PDF Datasheet


TM1628 pdf

TNY178PN Datasheet PDF – TinySwitch-LT Offline Switcher IC

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TNY178PN is a TinySwitch-LT offline switcher IC that integrates a high-voltage power MOSFET and power supply controller into a single DIP package for compact AC-DC conversion designs.

Function: Energy Efficient, Offline Switcher with Enhanced Flexibility and Extended Power Range

Package: DIP-8C Type

Manufacturer: Power Integrations ( http://www.powerint.com )

Image

TNY178PN Offline Switcher

Description

TNY178PN features simple ON/OFF control without the need for loop compensation, a 650V rated MOSFET, selectable current limit via the BP/M pin, and built-in protection functions including auto-restart and thermal shutdown. This device is widely used in low-power switch-mode power supplies for appliances, standby converters, and auxiliary power applications.

TinySwitch-LTcombines a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers, it uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator, enable circuit (sense and logic), current limit state machine, 5.85 V regulator, BYPASS/MULTI-FUNCTION pin undervoltage, overvoltage circuit, and current limit selection circuitry, over- temperature protection, current limit circuit, leading edge blanking, and a 700 V power MOSFET. TinySwitch-LTincorporates additional circuitry for auto-restart, adaptive switching cycle on-time extension, and frequency jitter. Figure 2 shows the functional block diagram with the most important features.

Output Power Table

TNY178PN output power table

Features

1. High DC current gain due to Darlington connection

2.  High surge resistance due to on-chip protection elements:

(1) C to E: Dumper diode

(2) C to B: Zener diode

3.  Low collector saturation voltage

4. Integrated 650V power MOSFET

5. Frequency jittering for reduced EM

6. Built-in 5.85V regulator for internal biasing

7. Simple ON/OFF control architecture without external loop compensation

Pinout

TNY178PN datasheet pdf pinout

 

Applications

1. Appliance power supplies

2. Home automation auxiliary converters

3. PC standby power supplies

4. Low-power AC-DC adapters and chargers

 

TNY178PN Datasheet PDF