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參數資料
| 型號： | L6920DBTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.9 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, MSOP-8 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 402K |
| 代理商： | L6920DBTR |
L6920DB
Pin settings
3/16
1
Pin settings
1.1
Pin connection
Figure 1.
Pin connection (top view)
1.2
Pin description
Table 1. Pin description
N°
Type
Description
1
FB
Output voltage selector. Connect FB to GND for Vout=5V or to OUT for
Vout=3.3V. Connect FB to an external resistor divider for adjustable
output voltage
2
LBI
Battery low voltage detector input. The internal threshold is set to 1.23V.
A resistor divider is needed to adjust the desired low battery threshold.
3LBO
Battery low voltage detector output. If the voltage at the LBI pin drops
below the internal threshold typ. 1.23V, LBO goes low.
The LBO is an open drain output and so a pull-up resistor (about
200K
) has to be added for correct output setting .
4
REF
1.23V reference voltage. Bypass this output to GND with a 100nF
capacitor for filtering high frequency noise. No capacitor is required for
stability
5
SHDN
Shutdown pin. When pin 5 is below 0.2V the device is in shutdown,
when pin 5 is above 0.6V the device is operating.
6
GND
Ground pin
7
LX
Step-up inductor connection
8
OUT
Power OUTPUT pin
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