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參數資料
| 型號： | LFXXC |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Very low drop voltage regulators with inhibit |
| 中文描述： | 非常低壓降穩壓器與抑制 |
| 文件頁數： | 1/45頁 |
| 文件大小： | 983K |
| 代理商： | LFXXC |
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July 2007
Rev. 18
1/45
45
LFxxAB
LFxxC
Very low drop voltage regulators with inhibit
Features
■
Very low dropout voltage (0.45V)
■
Very low quiescent current (typ. 50 μA in OFF
mode, 500 μA in ON mode)
■
Output current up to 500 mA
■
Logic-controlled electronic shutdown
■
Output voltages of 1.5; 1.8; 2.5; 2.7; 3; 3.3; 3.5;
5; 6; 8; 8.5; 9; 12V
■
Internal current and thermal limit
■
Only 2.2 μF for stability
■
Available in ± 1% (AB) or ± 2% (C) selection at
25°C
■
Supply voltage rejection: 80db (typ.)
■
Temperature range: -40 to 125°C
Description
The LFxxAB/LFxxC are very Low Drop regulators
available in PENTAWATT, TO-220, TO-220FP,
DPAK and PPAK package and in a wide range of
output voltages.
The very Low Drop voltage (0.45V) and the very
low quiescent current make them particularly
suitable for Low Noise, Low Power applications
and specially in battery powered systems.
In the 5 pins configuration (PENTAWATT and
PPAK) a Shutdown Logic Control function is
available (pin 2, TTL compatible). This means that
when the device is used as a local regulator, it is
possible to put a part of the board in standby,
decreasing the total power consumption. In the
three terminal configuration the device has the
same electrical performance, but is fixed in the
ON state. It requires only a 2.2 μF capacitor for
stability allowing space and cost saving.
TO-220FP
PENTAWATT
TO-220
DPAK
PPAK
Table 1.
Device summary
Order codes
LF15C
LF27AB
LF40C
LF80AB
LF15AB
LF30C
LF40AB
LF85C
LF18C
LF30AB
LF50C
LF85AB
LF18AB
LF33C
LF50AB
LF90C
LF25C
LF33AB
LF60C
LF90AB
LF25AB
LF35C
LF60AB
LF120C
LF27C
LF35AB
LF80C
LF120AB
www.st.com
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