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參數(shù)資料
| 型號： | T6309B-BX |
| 廠商： | TM Technology, Inc. |
| 英文描述： | Micropower Step-up DC/DC Converter |
| 中文描述： | 微功耗升壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大小： | 131K |
| 代理商： | T6309B-BX |
TE
CH
tm
T6309B
main switch from burning. When the output
voltage exceeds the OVP threshold voltage,
the main switch is turned off. It remains off
until the output voltage falls below the OVP
threshold voltage. The step-up converter
continues normal operation as long as the
output voltage is under the OVP threshold.
Shutdown
The T6309B enters shutdown to reduce
quiescent current under 1uA when CE pin is
low . For normal operation, drive CE high.
During shutdown, the reference, all feedback
and control circuitry are off. The boost
converter’s output drops to one Schottky
diode voltage drop below the input voltage
and SW remains high impedance. The
capacitance and load at VOUT determine the
rate at which VOUT decays. The CE pin can
also be used as dimming control. More details
are in the dimming control section
.
Undervoltage Lockout
An undervoltage lockout (UVLO) circuit
prevents fault operation of the T6309B when
input voltage is under 1.75V (typ). The device
remains off as long as the input voltage is
under the UVLO threshold.
TM Technology Inc. reserves the right
P. 6
Publication Date: SEP. 2005
to change products or specifications without notice.
Revision: A
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