tb62736fugel Marktech Optoelectronics, tb62736fugel Datasheet - Page 8

• Manufacturer Part Number: tb62736fugel
• Description: Step-up Type Dc-dc Converter For White Leds
• Manufacturer: Marktech Optoelectronics

2.8~5.5 V
V
2. Application Circuit Example and Measurement Data (Reference data)
IN
35
30
25
20
15
10
35
30
25
20
15
10
35
30
25
20
15
10
=
2.8
2.8
2.8
3.1
3.1
3.1
Input Voltage - Efficiency/Output Current
Input Voltage - Efficiency/Output Current
Input Voltage - Efficiency/Output Current
3.4
3.4
3.4
3.7
3.7
3.7
2LED Drive, L=4.7µH
3LED Drive, L=6.8µH
4LED Drive, L=6.8µH
4
4
4
V
SHDN
VIN(V)
VIN(V)
VIN(V)
CC
4.3
4.3
4.3
GND
L
1
4.6
4.6
4.6
SW
FB
4.9
4.9
4.9
S-Di
Efficiency
IOUT
IOUT
Efficiency
IOUT
Efficiency
5.2
5.2
5.2
5.5
5.5
5.5
WLEDs
100
90
80
70
60
50
100
90
80
70
60
50
100
90
80
70
60
50
2~6
8
35
30
25
20
15
10
35
30
25
20
15
10
Efficiency in the range of V
Output current in the range of V
2.8
<Measurement Data>
2.8
• Evaluation conditions
2 LED
3 LED
4 LED
5 LED
6 LED
2 LED
3 LED
4 LED
5 LED
6 LED
3.1
3.1
L
S-Di
LED
C1
C2
Input Voltage - Efficiency/Output Current
Input Voltage - Efficiency/Output Current
3.4
3.4
: 1001AS series (TOKO, INC)
: CUS02 1 A/30 V (TOSHIBA Corp.)
: NSCW215T (NICHIA Corp.)
: C2012JB1E105K (TDK Corp.)
: C2012JB1E105K (TDK Corp.)
Output Current (mA)
3.7
3.7
(Size 3.6 × 3.6 × 1.2 mm)
V
5LED Drive, L=10µH
6LED Drive, L=10µH
83.10 to 88.60
81.32 to 86.47
79.15 to 84.63
79.72 to 86.39
78.91 to 85.10
IN
Efficiency (%)
= 3.6 V center
4
4
VIN(V)
VIN(V)
21.17
20.85
20.56
20.10
19.95
4.3
4.3
IN
= 2.8 to 5.5 V
IN
4.6
4.6
= 3.0 to 5.0 V
4.9
4.9
TB62736FUG
IOUT
Efficiency
IOUT
Efficiency
Average Efficiency
-3.32
-1.95
-1.79
-1.82
-1.94
MIN
Tolerance (%)
5.2
5.2
2004-10-29
86.55
84.54
81.30
82.87
80.47
(%)
5.5
5.5
100
90
80
70
60
50
100
90
80
70
60
50
MAX
1.73
1.38
1.15
1.22
1.26