tb62733ftg TOSHIBA Semiconductor CORPORATION, tb62733ftg Datasheet - Page 8

• Manufacturer Part Number: tb62733ftg
• Description: Charge Pump Type Dc/dc Converter For White Led Driver
• Manufacturer: TOSHIBA Semiconductor CORPORATION

TOSHIBA
    This device has a large drive capability (Iout Max : Larger than 190mA), if in case of driving LED at 20mA each, this device
   1. In use of LCD backlighting (Main and Sub Displays)
     In case of driving the back light system both for main display and sub display, this device can be used for this application
     Also, Vout 1 has a drive capability up to 110mA, so it is allowed to change the system thet Vout 1 can drive 6 LEDs
    

 
This datasheet is tentative, the values and contents are subject to change without any notice.
Application Example
can drive up to 9 LEDs max.
These figures are showing as the standard application example. The current values or so are considered whenever it is designed.
With securing the output current of maximum 190mA.
(backlight for main display), then Vout 2 drives 2LEDs for the backlight of sub display as showing in Application Figure 2.
The LED brightness balance is adjusted by using FB1 and FB2.
Application Figure 1
Application Figure 2
2.8*4.2V
2.8*4.2V
C4
1.0ôF
C4
1.0ôF
C1
1.0ôF
C2
1.0ôF
C1
1.0ôF
C2
1.0ôF
                                            
C1×
C1Ù
C2×
C2Ù
GND
SP1
SP2
CE1
CE2
C1×
C1Ù
C2×
C2Ù
GND
SP1
SP2
CE1
CE2
Vin
Vin
Vout1
Vout2
Vout1
Vout2
Vout0
Vout0
FB1
FB2
FB1
FB2
0.4V
0.4V
0.4V
0.4V
C3
2.0ôF
C3
2.0ôF
20á
20á
20á
20á
20á
20á
20á
20á

20á
20á
20á
20á
20á
20á
20á
20á
27-Jul-04 (Rev1.7)TB62733FTG (Page. 8)
1LEDæÞÜí
ÔTotal 80 mAÕ
ÔTotal 80 mAÕ
1LED : 20 í
Main Display
Sub Display
 TB62733FTG
ÔTotal 40 mAÕ
ÔTotal 108 mAÕ
1 LED æ20 mA
1 LEDæ18í
Sub Display
Main Display