MAX1583XETB+T

Voltage - Output:	24V
Base Part Number:	MAX1583
Supplier Device Package:	10-TDFN-EP (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Camera Flash
Dimming:	--
Frequency:	750kHz ~ 1.25MHz
Current - Output / Channel:	300mA (Flash)
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	2.6V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to MAX1583XETB+T LED Drivers

MAX1583XETB+T is an LED driver released by Maxim Integrated Products (Maxim), a manufacturer of analog and mixed-signal components. MAX1583XETB+T is introduced as an efficient single-stage boost solution to power ultra-high-brightness LEDs (HB-LEDs). It is used in applications such as backlighting, lighting, LCD displays, and handsets. MAX1583XETB+T LED drivers can be used to drive LED strings of up to 30 LEDs.

Features of MAX1583XETB+T LED Drivers

MAX1583XETB+T LED drivers feature a high-frequency, constant-on-time (COT) topology. This topology provides fast transient response, minimal audible noise, and LEDs that are always on in any output condition. Additionally, the high-frequency switching of MAX1583XETB+T LED drivers enables an extremely compact solution for size-sensitive applications. MAX1583XETB+T LED drivers feature a wide input voltage range of 2.75V to 14.5V making it capable of supplying boost voltages from 8V to 23V. The switching frequencies of the drivers can be programmed to optimize the solution for area, efficiency, or EMI performance. The drivers also feature robust protection features. These include over-current protection, thermal shutdown, over-voltage protection, and adjustable foldback current limit.

Application Fields of MAX1583XETB+T LED Drivers

MAX1583XETB+T LED drivers are used in a variety of applications including backlighting, office lighting, LCD displays, LED strings, and handsets. The drivers can also be used to power HB-LEDs in automotive applications including interior and exterior lighting.

Working Principle of MAX1583XETB+T LED Drivers

MAX1583XETB+T LED drivers employ the high-frequency, constant-on-time topology. This topology enables the global ON time of the device to be programmed independently of the input voltage. As a result, it can maintain constant brightness with varying input conditions. The MAX1583XETB+T LED driver switches at a user-defined frequency. The output voltage is determined by the difference in the gate and source voltage of the internal MOSFETs. The feedback voltage is sensed by the FB pin, which compares the feedback voltage to the internal reference voltage. If the feedback voltage is lower than the reference voltage, the IC will increase its duty cycle. Conversely, if the feedback voltage is higher than the reference voltage, the IC will decrease its duty cycle.

Conclusion

MAX1583XETB+T is an efficient, single-stage boost solution for powering HB-LEDs. It is featured with a high-frequency, constant-on-time topology and offers fast response, minimal audible noise, and more robust protection features. MAX1583XETB+T LED drivers can be used in a variety of applications, including backlighting, office lighting, LCD displays, LED strings, and handsets. The drivers employ the high-frequency, constant-on-time topology, which enables a user to maintain constant brightness with varying input conditions.

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