LED

PT4115 PDF Datasheet – 1.2A Step-down LED Driver

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This is one of the LED Driver types.

Part Number: PT4115

Function: 1.2A Step-down High Brightness LED Driver

Package: SOT89-5, ESOP8 Type

Manufacturer: PowTech

Images:

PT4115 datasheet

Features:

1. Simple low parts count

2. Wide input voltage range: 6V to 30V

3. Up to 1.2A output current

4. Single pin on/off and brightness control using DC voltage or PWM

5. Up to 1MHz switching frequency

6. Typical 5% output current accuracy

7. Inherent open-circuit LED protection

8. High efficiency (up to 97%)

9. High-Side Current Sense

10. Hysteretic Control: No Compensation

11. Adjustable Constant LED Current

12. ESOP8 package for large output power application

 

Description

The PT4115 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LED efficiently from a voltage source higher than the total LED chain voltage. The device operates from an input supply between 6V and 30V and provides an externally adjustable output current of up to 1.2A. Depending upon the supply voltage and external components, the PT4115can provide more than 30 watts of output power.

The PT4115 includes the power switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current, and a dedicated DIM input accepts either a DC voltage or a wide range of pulsed dimming. Applying a voltage of 0.3V or lower to the DIM pin turns the output off and switches the device into a low current standby state. The PT4115 is available in SOT89-5 and ESOP8 packages.  […]

PT4115 pinout

PT4115 pdf

PT4115 PDF Datasheet

TM1628 Datasheet – LED Controller Driver – Titan Micro

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What is TM1628?

It is designed to control LED and seven-segment displays, and it features a built-in keypad scanning function.

The TM1628 IC is designed to interface with microcontrollers and other digital circuits. It communicates using a 3-wire serial interface, which makes it easy to integrate into a wide range of applications. The TM1628 can control up to 8 digits of 7-segment displays, or up to 64 individual LEDs.

One of the key features of this is its built-in keypad scanning function. This allows it to scan up to 24 keys in a matrix arrangement, which is useful for applications such as remote controls or other input devices.

Part Number: TM1628

Function: LED Controller driven on a 1/7 to 1/8 duty factor.

Package: SSOP 28 Pin Type

Manufacturer: Titan Micro Integrated Circuit

Pinouts:
TM1628 pinout

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.

Housed in a 28-pin SO Package, Device pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantages.

It includes a variety of features to control the display brightness and intensity. It has 16 levels of brightness control and supports both static and dynamic display modes.

Block Diagram :

TM1628 datasheet, block diagram

Features

• CMOS Technology

• Low Power Consumption

• Multiple Display Modes (12 segment, 6 Grid to 11 segment, 7 Grid)

• Key Scanning (8 x 2 Matrix)

• 8-Step Dimming Circuitry

• Serial Interface for Clock, Data Input/Output, Strobe Pins

• Available in 28-pin, SOP Package

Applications

• Micro-computer Peripheral Device

• VCR set

• Combi set

TM1628 Datasheet PDF Download


TM1628 pdf

 

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