LT3595AEUHH#TRPBF

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LT3595AEUHH#TRPBF is a type of PMIC - LED Driver. It is a small, low power LED driver IC, featuring relatively high efficiency and simple external components. It is designed for LED lighting applications with battery voltage input, or applications that require wide Vin operating range from 2.45V to 27V. The IC is available with two integrated package options: DLVSSOP-14 and DFN-8.

Features

• Wide Vin range from 2.45V to 27V
• 360 KHz internal soft-start hysteretic control
• Internal voltage loop control
• Adjustable ratio of LED voltages and LED currents
• Integrated LED current balance on each LED string
• Programmable LED open option
• Independent LED open flag monitor
• No additional external components
• High efficiency

Applications

• LED Lighting
• Battery-Powered LED Lighting
• Portable Devices
• Room & Building Automation
• Aviation & Transportation Lighting

Working Principle

LT3595AEUHH#TRPBF is designed to drive two strings of LEDs in series, with two control currents (one for each string). The two LED strings can be controlled independently, allowing for a wide range of combinations of brightness and current. The IC integrates a 380KHz constant-on-time hysteretic controller for current regulation, a low side current monitoring circuit, an LED open monitor and a logic to prevent LED open in case of a broken string.

The LT3595AEUHH#TRPBF provides all the required features of LED driver with simple external components. It includes a programmable LED current input and can be configured to regulate the LED current between 0mA and 140mA. The open LED monitor feature ensures that current is cutoff when either of the\ two strings is broken or disconnected. Moreover, the voltage loop and current balance functions also enable regulation of the LED strings.

The device is also equipped with a soft-start function, which limits the inrush current when the device is first powered up by controlling the current waveform. This helps to reduce the peak power draw and the associated losses. Additionally, the device also features hysteretic over temperature protection, short circuit protection and thermal fold-back functionality.

The LT3595AEUHH#TRPBF is designed for maximum efficiency, as it can operate with efficiency up to 93%. The device also incorporates multiple safety features, such as over temperature protection and short circuit protection, to protect the LEDs from being damaged.

Conclusion

In conclusion, LT3595AEUHH#TRPBF is an integrated and efficient PMIC - LED Driver, suitable for wide range of LED lighting applications. It features wide Vin range, integrated voltage regulation and current balance functions, and high-efficiency up to 93%. The device also provides multiple safety features, such as over temperature protection, short circuit protection and thermal fold-back. All these features combine to make the LT3595AEUHH#TRPBF an ideal choice for LED lighting applications.

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