tb62734fmg TOSHIBA Semiconductor CORPORATION, tb62734fmg Datasheet - Page 8

• Manufacturer Part Number: tb62734fmg
• Description: Step-up Type Dc-dc Converter For White Led?s
• Manufacturer: TOSHIBA Semiconductor CORPORATION

25
20
15
25
20
15
2. Example of Application Circuit and Measurement Data: Inductor CXLD120 Series
25
20
15
2.8
2.8
2.8
(Sumitomo)
3.1
3.1
3.1
Io
Efficiency
2 LED drive
3 to 5 LED drive : L = 6.8 µH
6 LED drive
3.4
3.4
3.4
Input - Efficiency / Output Current
Input - Efficiency / Output Current
Input - Efficiency / Output Current
3.7
3.7
V
CTL
PGND
3.7
CC
L
2 LED Drive
3 LED Drive
4 LED Drive
4
TB62734FMG
4
4
Vin (V)
Vin (V)
Vin (V)
: L = 4.7 µH
: L = 10 µH
GND
4.3
4.3
4.3
A
4.6
4.6
4.6
RSENS
Io
Efficiency
S-Di
Io
Efficiency
OVD
4.9
4.9
4.9
K
5.2
5.2
5.2
5.5
5.5
5.5
100
95
90
85
80
100
95
90
85
80
100
95
90
85
80
8
L
S-Di : CUS02 1 A/30 V (TOSHIBA)
LED : NSCW215T (NICHIA)
C1
C2
<Measurement Data>
Efficiency in the range of V
Output current in the range of V
( ): Range of V
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20
15
25
20
15
: 1001AS series (Size: 3.0 × 2.65 × 1.20 mm)
: C2012JB1E225K (TDK)
: C2012JB1E105K (TDK)
2.8
2.8
2 LED
3 LED
4 LED
5 LED
6 LED
2 LED
3 LED
4 LED
5 LED
6 LED
3.1
3.1
Io
Efficiency
Io
Efficiency
3.4
3.4
IN
Input - Efficiency / Output Current
Input - Efficiency / Output Current
Output Current
87.34 to 91.82
85.46 to 89.50
84.22 to 87.99
81.65 to 86.49
83.53 to 87.63
20.93 to 24.06
20.69 to 22.56
20.22 to 21.77
19.78 to 21.30
20.28 to 21.55
= 3.0 to 4.3 V
Efficiency (%)
3.7
3.7
(mA)
5 LED Drive
6 LED Drive
IN
4
4
Vin (V)
Vin (V)
= 2.8 to 5.5 V
IN
4.3
4.3
= 2.8 to 5.5 V
TB62734FMG
Average Efficiency
4.6
4.6
Tolerance (%)
14.95 (6.01)
9.02 (3.96)
7.66 (3.49)
7.69 (3.51)
6.28 (2.71)
4.9
4.9
89.87
87.81
86.33
84.84
86.15
2006-06-14
(%)
5.2
5.2
5.5
5.5
100
95
90
85
80
100
95
90
85
80