Light Bar Update, PT4115 CC LED Dimmer
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PT4115 is a high brightness step-down led diver with 30A and 1.2V. This article is going to explain the application circuit, equivalents, pinout, and other details about PT4115.
HomeCommunitySubjectPT4115 High Brightness LED Driver: 30A, 1.2V Step-down Driver, Equivalent and Pinout
PT4115 High Brightness LED Driver: 30A, 1.2V Step-down Driver, Equivalent and Pinout
Unclassified PT4115 is a high brightness step-down led diver with 30A and 1.2V. This article is going to explain the application circuit, equivalents, pinout, and other details about PT4115.
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Nov 20, 2021
Afra Addison
PT4115
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What is PT4115?
The PT4115 is an inductive step-down high brightness driver with a continuous conduction mode that is designed to efficiently drive single or multiple series linked LEDs from a voltage source higher than the total LED chain voltage.
The device is powered by a 6V to 30V input source and has a 1.2A output current that may be adjusted externally. The PT4115 may produce more than 30 watts of output power depending on the input voltage and additional components.
The PT4115 has a dedicated DIM input that receives either a DC voltage or a wide range of pulsed dimming, as well as a high-side output current detecting circuit that employs an external resistor to adjust the nominal average output current, When you provide a voltage of 0.3V or less to the DIM pin, the output is turned off and the device enters a low-current standby mode.
PT4115 Pinout
| Pin No. | Pin Names | Description |
| 1 | SW | Switch Output. SW is the drain of the internal N-ch MOSFET switch. |
| 2 | GND | Signal and power ground. Connect directly to the ground plane. |
| 3 | DIM | Logic level dimming input. Drive DIM low to turn off the current regulator. Drive DIM high to enable the current regulator. |
| 4 | CSN | Current sense input |
| 5 | VIN | Input Supply Pin. Must be locally bypassed. |
| - | Exposed PAD | Internally connected to GND. Mount on board for lower thermal resistance. |
| ESOP8 4,5 | NC | No connection |
PT4115 CAD Model
PT4115 Symbol
PT4115 Footprint
Specifications
UMW(Youtai Semiconductor Co., Ltd.) PT4115 technical specifications, attributes, parameters and parts with similar specifications to UMW(Youtai Semiconductor Co., Ltd.) PT4115.
PT4115 Tech Specifications
PT4115 Tech Specifications
UMW(Youtai Semiconductor Co., Ltd.) PT4115 technical specifications, attributes, parameters and parts with similar specifications to UMW(Youtai Semiconductor Co., Ltd.) PT4115.
| Product Attribute | Attribute Value | |
|---|---|---|
| Package / Case | SOT89-5 |
| Product Attribute | Attribute Value | |
|---|---|---|
| Packaging | Tape & Reel (TR) |
| Product Attribute | Attribute Value | |
|---|---|---|
| RoHS Status | RoHS Compliant |
PT4115 Simplified Block Diagram
The PT4115 Simplified Block Diagram is as follow
PT4115 Simplified Block Diagram
PT4115 Features
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Simple low parts count
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Wide input voltage range: 6V to 50V
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High efficiency (up to 97%)
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Up to 1.5A output current
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Single pinon/off and brightness control using DC voltage or PWM
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Up to 1MHz switching frequency
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Typical 3% output current accuracy
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Inherent open-circuit LED protection
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Inherent Rcs open protection
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High-Side Current Sense
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Hysteretic Control: No need for compensation
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Adjustable Constant LED Current
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Thermal shutdown
PT4115 Typical Application Circuit
PT4115 1W Application Circuit
PT4115 3W Application Circuit
PT4115 Equivalents
RTS6700, IFR 4000, STR 6553, PM554, JE1100
How to use PT4115?
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.
PT4115 Package Outline
PT4115 Package Outline
PT4115 Manufacturer
Youtai Semiconductor Co., Ltd. is an integrated high-tech enterprise specializing in the design, manufacture, and sales of integrated circuits and semiconductor discrete devices. Founded in 2009, the company is a Sino-Taiwan joint venture with a production base located in Pingshan New District, Shenzhen.
Frequently Asked Questions
What is the use of PT4115?
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.
How does PT4115 work?
The device operates from an input supply between 6V and 30V and provides an externally adjustable output current of up to 1.2A. 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.
What is the voltage of PT4115?
The PT4115 operates from an input supply between 6V and 30V and provides an externally adjustable output current of up to 1.2A.
How is the circuit of PT4115?
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.
FAQ
What is the use of PT4115?
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.
How does PT4115 work?
The device operates from an input supply between 6V and 30V and provides an externally adjustable output current of up to 1.2A. 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.
What is the voltage of PT4115?
The PT4115 operates from an input supply between 6V and 30V and provides an externally adjustable output current of up to 1.2A.
How is the circuit of PT4115?
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.
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