TB62737FPG Toshiba, TB62737FPG Datasheet - Page 15

• Manufacturer Part Number: TB62737FPG
• Manufacturer: Toshiba

Specifications of TB62737FPG

• Package: SON6
• Supply Voltage: 2.8V to 5.5V
• # Leds Supported: 2 to 6 LEDs in series
• Sw Frequency: 1.1MHz
• Led Current Accuracy: ±5.23% (max)
• Protection Feature: Output overvoltage protection
• Other Features & Functions: Analog dimming
• Rohs Compatible Product(s) (#): -

1. Application Circuit Example and Measurement Data (reference data)
2.8 to 5.5 V
* V
Note: These application examples are provided for reference only. Thorough evaluation and testing should be
than OVD detection level. (V
V
35
30
25
20
15
10
35
30
25
20
15
10
35
30
25
20
15
10
OUT
IN
2.8
2.8
2.8
=
implemented when designing your application's mass production design.
voltage in driving 5 or 6 LEDs must be lower
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
VIN(V)
VIN(V)
VIN(V)
SHDN
VIN
GND
4.3
4.3
4.3
L
OUT
1
4.6
4.6
4.6
OVD
SW
FB
< 19 V)
4.9
4.9
4.9
IOUT
I F
Efficiency
Efficiency
S-Di
I F
Efficiency
IOUT
Efficiency
IOUT
I F
Efficiency
Efficiency
5.2
5.2
5.2
5.5
5.5
5.5
100
90
80
70
60
50
100
90
80
70
60
50
100
90
80
70
60
50
WLEDs
2 to 6
<Measurement Data>
Efficiency in the range of V
Output current in the range of V
15
35
30
25
20
15
10
35
30
25
20
15
10
2 LEDs
3 LEDs
4 LEDs
5 LEDs
6 LEDs
2 LEDs
3 LEDs
4 LEDs
5 LEDs
6 LEDs
2.8
2.8
3.1
3.1
•
Evaluation conditions (Ta = 25°C)
L
C
C
S-Di
WLEDs : NSCW215T (NICHIA Corp.)
R
1
Input Voltage - Efficiency/Output Current
3.4
1
2
SENS
Input Voltage - Efficiency/Output Current
3.4
Output Current (mA)
3.7
3.7
82.60 to 88.46
82.69 to 87.78
80.73 to 86.22
80.73 to 87.28
79.78 to 85.55
Efficiency (%)
: CXLD120 series (NEO MAX CO.,Ltd.)
: C2012JB1E225K (TDK Corp.)
: C2012JB1E105K (TDK Corp.)
: CUS02 1 A/30 V (TOSHIBA Corp.)
: RK73B1ETBK (KOA Corp.)
V
6LED Drive, L=10μH
5LED Drive, L=10μH
(Size: 2.5 mm × 3.0 mm × 1.2 mm)
IN
21.13
20.60
20.87
20.06
19.90
= 3.6 V
IN
4
4
VIN(V)
VIN(V)
= 2.8 to 5.5 V
4.3
4.3
IN
= 3.0 to 5.0 V (V
4.6
4.6
4.9
4.9
Average Efficiency (%)
I F
Efficiency
− 3.50
− 1.95
− 1.75
− 1.81
− 1.95
IOUT
Efficiency
IOUT
I F
Efficiency
Efficiency
Min
TB62737FPG
Tolerance (%)
5.2
5.2
IN
86.29
85.95
83.05
83.45
81.15
5.5
5.5
2010-11-16
= 3.6 V typ.)
100
90
80
70
60
50
100
90
80
70
60
50
Max
1.77
1.38
1.11
1.15
1.28