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KF50B Datasheet

  • KF50B

  • VERY LOW DROP VOLTAGE REGULATOR WITH INHIBIT

  • 344.41KB

  • STMicroelectronics   STMicroelectronics 

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KFxxB
Very low drop voltage regulators with inhibit
Features
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Very low dropout voltage (0.4 V)
Very low quiescent current (typ. 50 碌A in OFF
Mode, 500 碌A in ON Mode)
Output current up to 500 mA
Logic-controlled electronic shutdown
Output voltages of 1.5; 2.5; 3; 3.3; 4; 5; 5.2; 6; 8
Internal current and thermal limit
Only 2.2 碌F for stability
Available in 卤 2 % accuracy at 25 掳C
Supply voltage rejection: 70 db (typ.)
Temperature range: -40 to 125 掳C
SO-8
DPAK
Description
The KFxx series are very low drop regulators
available in SO-8 package and in a wide range of
output voltages.
The very low drop voltage (0.4 V) and the very low
quiescent current make them particularly
suitable for low noise, low power applications and
specially in battery powered systems.
A shutdown logic control function is available (pin
5, 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. It requires only a 2.2 碌F
capacitor for stability allowing space and cost
saving.
Table 1.
Device summary
Part numbers
KF15B
KF25B
KF30B
KF33B
KF40B
KF50B
KF52B
KF80B
December 2007
Rev 10
1/22
www.st.com
22

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