DLPA2005ERSLT datasheet(11/55 Pages) TI1

Part #	DLPA2005ERSLT

Description	Power Management and LED/Lamp Driver IC

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DLPA2005

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DLPS047B – SEPTEMBER 2014 – REVISED OCTOBER 2015

6.7 Typical Characteristics

The maximum output current of the buck-boost is a function of input voltage (VIN), and output voltage (VLED).

The relationship between VIN, VLED, and MAX ILED is shown in Figure 2. Please note that VLED is the output

of the buck-boost regulator, which includes the voltage drop across the sense resistor RLIM (39 mOhms typical),

internal strobe control switch (75 m

Ω max), and the forward voltage of the LED. For example, to drive 2.4 A of

current through a LED with Vƒ = 4.8 V using the DLPA2005, the minimum input voltage needs to be 4.5 V.

2.3 V < VLED < 4.8 V

Figure 2. Maximum LED Output Current as a Function of

Input Voltage (VIN) and Buck-Boost Output Voltage (VLED)

NOTE

Measured on a typical unit. VLED is the output of the buck-boost regulator and includes

the voltage drop across the sense resistor, internal strobe control switch, and the forward

voltage of the LED.

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