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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 F capacitor for stability allowing space and cost saving.
KF15B Maximum Ratings
Symbol
Parameter
Value
Unit
VI
DC input voltage
-0.5 to 20
V
IO
Output current
Internally Limited
PTOT
Power dissipation
Internally Limited
TSTG
Storage temperature range
-40 to 150
TOP
Operating junction temperature range
-40 to 125
Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
KF15B Features
Very low dropout voltage (0.4 V) Very low quiescent current (typ. 50 A in OFF mode, 500 A in ON mode) Output current up to 500 mA Logic-controlled electronic shutdown Output voltages of 1.5; 2.5; 3.3; 4; 5; 8 V Internal current and thermal limit Only 2.2 F for stability Available in ± 2 % accuracy at 25 Supply voltage rejection: 70 db (typ.) Temperature range: -40 to 125