TPS61058 datasheet(9/30 Pages) TI

No de pièce	TPS61058

Description	SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE HIGH POWER WHITE LED DRIVER

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Fabricant	TI [Texas Instruments]

Site Internet	http://www.ti.com

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SW

(2 V/div)

I (200 mA/div)

L

I

(200mA/div)

LED

V

(10 mV/div - 3.8 V OFFSET)

OUT

V = 4.5 V, I

= 500 mA

I

LED

t - Time - 500 ns/div

EN (1 V/div)

t - Time - 5 ms/div

I (200 mA/div)

L

V

(1 V/div)

OUT

I

(200 mA/div)

LED

V = 3.6 V

I

V

(1 V/div)

OUT

I

(200 mA/div)

LED

I (500 mA/div)

L

t - Time - 50 s/div

m

EN (1 V/div)

V

(1 V/div)

OUT

I

(50 mA/div)

LED

I (100 mA/div)

L

t - Time - 200 s/div

m

TPS61058

TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

TPS61058

SWITCHING WAVEFORMS IN DOWN MODE

HIGH CURRENT FLASHLIGHT PULSE WAVEFORM

Figure 11.

Figure 12.

TPS61058

TORCH TO FLASHLIGHT TRANSISTION

START-UP AFTER ENABLE

Figure 13.

Figure 14.

9

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