TB62736FUG datasheet(11/13 Pages) MARKTECH

No de pièce	TB62736FUG

Description	Step-up Type DC-DC Converter for White LEDs

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Fabricant	MARKTECH [Marktech Corporate]

Site Internet	http://www.marktechopto.com

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11 / 13 page

TB62736FUG

2004-10-29

11

5.

Application Circuit Example and Measurement Data

(Reference data)

• Evaluation conditions

L

: 32R51 (KOA Corp.)

(Size 3.2

× 2.5 × 0.6 mm)

S-Di

: CUS02 1 A/30 V (TOSHIBA Corp.)

LED

: NSCW215T (NICHIA Corp.)

C1

: C2012JB1E105K (TDK Corp.)

C2

: C2012JB1E105K (TDK Corp.)

VIN =

2.8~5.5 V

L1

S-Di

VCC

SW

SHDN

GND

FB

2~3

WLEDs

Input Voltage - Efficiency/Output Current

2LED Drive, L=5.1µH

10

15

20

25

30

35

2.8

3.1

3.4

3.7

4

4.3

4.6

4.9

5.2

5.5

VIN(V)

50

60

70

80

90

100

IOUT

Efficiency

Input Voltage - Efficiency/Output Current

3LED Drive, L=5.1µH

10

15

20

25

30

35

2.8

3.1

3.4

3.7

4

4.3

4.6

4.9

5.2

5.5

VIN(V)

50

60

70

80

90

100

IOUT

Efficiency

Efficiency in the range of VIN = 2.8 to 5.5 V

Efficiency (%)

Average Efficiency

(%)

2 LED

81.78～88.79

85.84

3 LED

76.84～85.48

82.17

Output current in the range of VIN = 3.0 to 5.0 V

Tolerance (%)

Output Current (mA)

VIN = 3.6 V center

MIN

MAX

2 LED

21.19

-2.99

1.64

3 LED

20.71

-1.98

1.44

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