TPS61055 datasheet(10/27 Pages) TI

Part #	TPS61055

Description	HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH STANDARD LOGIC INTERFACE

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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10 / 27 page

V =4.2V,

I

=75mA

I

LED

(500mV/div-3.5VOffset)

VOUT

LEDHeadroomVoltage

t-Time=250ns/div

(1V/div)

(50mA/div)

ILED

I

(50mA/div)

L

V =3.6V,V =5V,

I =500mA,I

=1500mA

I

O

LIM

t-Time=125ns/div

I

(200mA/div-0.6 A Offset)

L

V

(50mV/div-5VOffset)

OUT

SW

(2V/div)

I

(200mA/div-0.3 A Offset)

L

V =3.6Vto3.9V,

I

=500mA,I

=1500mA

I

LED

LIM

V

(200mV/div-4VOffset)

OUT

BatteryVoltage

(200mV/div-4VOffset)

I

(100mA/div-0.3 A Offset)

LED

t-Time=20 s/div

m

V =3.6V,V

=5V,

I

=1500mA

I

O

LIM

t-Time=50 s/div

m

V

(500mV/div-5VOffset)

OUT

I

(500mA/div)

L

I

(500mA/div)

OUT

TPS61054, TPS61055

SLUS760A – SEPTEMBER 2007 – REVISED MAY 2008 .................................................................................................................................................. www.ti.com

PWM OPERATION

DOWN-MODE OPERATION

Figure 13.

Figure 14.

VOLTAGE MODE LOAD TRANSIENT RESPONSE

DOWN-MODE LINE TRANSIENT RESPONSE

Figure 15.

Figure 16.

10

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Product Folder Link(s) :TPS61054, TPS61055

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