- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361356 > T6309B-AX (TM Technology, Inc.) Micropower Step-up DC/DC Converter PDF資料下載
參數(shù)資料
| 型號： | T6309B-AX |
| 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)： | 8/11頁 |
| 文件大?。?/td> | 131K |
| 代理商： | T6309B-AX |
TE
CH
tm
T6309B
TM Technology Inc. reserves the right
P. 8
Publication Date: SEP. 2005
to change products or specifications without notice.
Revision: A
FB
R2
100K
PWM
Signal
R1
25K
R
S
25 Ohm
T6309B
0.1nF
10K
4. Using a Logic Signal
The LED current can be controlled in discrete
steps with a logic signal as shown in the
figure below. When the NMOS is off, R1 set
the minimum current. When the NMOS is on,
R2 sets the LED current increment value.
FB
R2
Logic
Signal
R
1
T6309B
Start-Up and Inrush Current
The T6309B has no internal soft start circuit
included to achieve minimum start-up delay.
All inductive step-up converters have higher
inrush current during start-up. The inrush
current for T6309B is about 200mA. If soft-
start is required, a recommended external
circuit is shown in the below figure.
FB
4.7K
1K
R
S
T6309B
GND
2.2nF
D2
D1
Output Voltage Selection
Referring to Fig. 3, select an output voltage
for
T6309B-A
(0.4V reference) by connecting
FB to a resistive divider between the output
and GND. The V
OUT
can be set as:
V
OUT
= (1+R1/R2) x 0.4V
Higher R1,R2 values reduce quiescent current,
but give bad noise immunity. To keep stable
feedback loop operation and better noise
immunity, select (R1+R2) value less than
1MOhm.
Inductor Selection
The T6309B is designed to work well with a
10uH inductor in most applications. Low
inductance values supply higher output
current, but also increase the ripple and
reduce efficiency. Higher inductor values
reduce ripple and improve efficiency, but also
limit output current. Choose a low DC-
resistance inductor, usually less than 1 Ohm
to minimize loss. It is necessary to choose an
inductor with saturation current greater than
the peak current that the inductor will
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T6309B-BX | Micropower Step-up DC/DC Converter |
| T6309B | Micropower Step-up DC/DC Converter |
| T6311A | Low-Dropout, Constant-Current White LED Bias Supply |
| T6311A-D | Low-Dropout, Constant-Current White LED Bias Supply |
| T6311A-X | Low-Dropout, Constant-Current White LED Bias Supply |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T6309B-BX | 制造商:TMT 制造商全稱:TMT 功能描述:Micropower Step-up DC/DC Converter |
| T630MA250V | 制造商:SCH 功能描述:FUSE SCHURTER BULK |
| T630W | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SNUBBERLESS TRIAC |
| T630W_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:6 A Snubberless? Triac |
| T63110 | 制造商:Allied Controls Incorporated 功能描述:Conn Relay Socket SKT 6 POS Solder ST Thru-Hole |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。