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參數(shù)資料
| 型號(hào)： | TB62733FTG |
| 廠商： | Toshiba Corporation |
| 元件分類： | LED驅(qū)動(dòng)器 |
| 英文描述： | Charge Pump type DC/DC Converter for White LED Driver |
| 中文描述： | 電荷泵型直流/直流轉(zhuǎn)換器，用于白光LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 614K |
| 代理商： | TB62733FTG |
TOSHIBA
■
Thermal Shut Down Function
This device has Thermal Shutdown Function to protect from thermal damage when the output is shorted.
The temperature to operate this function is set around from 120 to 160 degree C. (This is not guaranteed Value.)
■
The selection of Capacitor for Charge Pump, input and output
The input capacitor is effective to decrease the impedance of power supply and also input current is averaged.
The input capacitor should be selected by impedance of power supply, it is better to choose with lower ESR
(Equivalent Series Resistor). (i.e. ceramic capacitor etc.) Regarding to the capacitance values, it is recommended to
choose in the range from 0.8 uF to 10 uF, however larger than 1 uF should be better.
The output capacitor is effective to decrease the ripple noise of the output line.
Also, it is better to choose the capacitor.)
Regarding to the capacitance values, it is recommended to
choose in the range from 0.8 uF to 10 uF, however larger than 2 uF should be better.
The capacitor for charge pump operation is also selected the capacitor with low ESR. .) Regarding to the
capacitance values, it is recommended to choose in the range from 0.8 uF to 10 uF, however larger than 1 uF should be
better.
TB62733FTG
●
This datasheet is tentative, the values and contents are subject to change without any notice.
27-Jul-04 (Rev1.7)
TB62733FTG (Page. 7)
Truth Table for Current Control
SP1
SP2
L
L
L
H
H
L
H
H
FB Control Voltage
0.1V
0.2V
0.3V
0.4V
LED Current at Resistor(R
X
)
＝
20
Ω
5mA
10mA
15mA
20mA
The feed back voltage is set by input signal (SP1 and SP2)
As shown in the following table, the current value of LED is obtained by the following equation.
I
LED
＝
V
FB
／
R
X
The brightness control is available with feed back voltage control.
FB1
C3
2.0
μ
F
Vout1
R
X
FB2
C3
2.0
μ
F
Vout2
R
X
Feed Back
Control 2
3. Vout 2 Operating
LED ON
Truth Table (CE1 and CE2)
CE1
CE2
L
L
H
L
L
H
H
H
Output Terminal
None
Vout1
Vout2
Vout1,Vout2
Feed Back Control
None
FB1
FB2
FB1
／
FB2
LED OFF
■
Soft Start Function
This device is integrated Soft start function. When the power supply is ON or output is started to operate, the transition
time is controlled in order to decrease the rush current.
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| TB62734FMG | 制造商:MARKTECH 制造商全稱:Marktech Corporate 功能描述:Step Up Type DC-DC Converter for White LED |
| TB62736FUG | 制造商:MARKTECH 制造商全稱:Marktech Corporate 功能描述:Step-up Type DC-DC Converter for White LEDs |
| TB62736FUG(O,EL) | 功能描述:LED照明驅(qū)動(dòng)器 White LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TB62737FPG(O,EL) | 功能描述:LED照明驅(qū)動(dòng)器 White LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TB62737FUG(O,EL) | 制造商:Toshiba America Electronic Components 功能描述:IC LED DRIVR WHITE BCKLGT 6-SSOP |
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