tca62735aflg TOSHIBA Semiconductor CORPORATION, tca62735aflg Datasheet - Page 10

• Manufacturer Part Number: tca62735aflg
• Description: Charge Pump Type Dc/dc Converter For White Led Driver
• Manufacturer: TOSHIBA Semiconductor CORPORATION

C
C
2
1
Evaluation Circuit
=1.0µF
=1.0µF
160
140
120
100
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
80
60
40
20
0
2.8
5
T
1x Mode Transition V oltage vs. ILED Current
a
3.0
=25°C
10
IOUT Current vs. VIN
4LEDs at 30mA
4LEDs at 20mA
4LEDs at 5mA
C1-
C2-
C2+
GND
3.2
ILED Current (mA )
15
3.4
VIN (V)
3.6
20
LED Vf=3.2V,4c h ON
LED Vf=3.4V,4c h ON
LED Vf=3.6V,4c h ON
3.8
R
CTL2
CTL1
CTL0
SET
C
T
EN
OUT
a
25
=25°C
=8.2kΩ~47kΩ
4.0
=1.0µF
A
4.2
10/18
30
V
40
35
30
25
20
15
10
5
0
2.8
• Evaluation conditions
V
3.0
LED
C
C
C
C
IN
OUT
1
2
ILED Current vs. VIN
4LEDs at 30mA
4LEDs at 20mA
4LEDs at 5mA
3.2
: NACW215 (NICHIA Corp.)
: C1608JB1C225K (TDK Corp.)
: C1608JB1C105K (TDK Corp.)
: C1608JB1C105K (TDK Corp.)
: C1608JB1C105K (TDK Corp.)
A
V
IN
3.4
TCA62735AFLG
=2.8V~4.2V
VIN (V)
C
IN
3.6
=2.2µF
2007-06-21
3.8
T
a
=25°C
4.0
4.2