TPS60252RTET datasheet(5/26 Pages) TI1

Part #	TPS60252RTET

Description	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE

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FUNCTIONAL BLOCK DIAGRAM

5

DM5

6

DS1

7

DS2

11

10

9

8

DM 4

DM 3

DM 2

DM 1

GEAR

CONTROL

&

OPENLAMP

DETECTION

1X, 1.5XCHARGEPUMP

1

VOUT

13

14

15

16

C 1 -

C 2 +

C 2 -

C 1 +

2

VIN

I2C

INTERFACE

ENmain

MainDimming

ENsub 1

ENsub 2

SubDimming

ENaux

AUXDimming

SCLK

SDAT

4

3

6

12

GND

BIAS, TEST,& MONITORING

ENold

TYPICAL CHARACTERISTICS

TABLE OF GRAPHS

TPS60250

TPS60252

www.ti.com............................................................................................................................................................ SLVS769C – APRIL 2007 – REVISED APRIL 2008

DESCRIPTION

REF

Efficiency vs Input Voltage, 4 Main LED - 15 mA, 25 mA

Figure 3

Efficiency

Efficiency vs Input Voltage, 2 Sub LED with Light Load Condition,

×1 Mode Operation

Figure 4

Switch Resistance vs Free-Air Temperature,

×1 Mode, I

LED = 230 mA

Figure 5

Switch Resistance vs Free-Air Temperature,

×1 Mode, I

LED = 100 mA

Figure 6

Output Impedance of

×1

and

×1.5 Mode

Switch Resistance vs Free-Air Temperature,

×1.5 Mode Charge Pump Open-Loop , I

LED = 230 mA

Figure 7

Switch Resistance vs Free-Air Temperature,

×1.5 Mode Charge Pump Open-Loop, I

LED = 100 mA

Figure 8

Shutdown Current

Shutdown Current vs Input Voltage

Figure 9

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Product Folder Link(s): TPS60250 TPS60252

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TPS60252RTET Datasheet(PDF) 5 Page - Texas Instruments

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