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KF25BD-TR Datasheet

Very low drop voltage regulators

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KFXX
Very low drop voltage regulators with inhibit
SO-8
DPAK
Features
Very low dropout voltage (0.4 V)
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 2.5; 3.3; 5; 8 V
Internal current and thermal limit
Only 2.2 µF for stability
Available in ± 2 % accuracy at 25 °C
Supply voltage rejection: 70 db (typ.)
Temperature range: - 40 to 125 °C
Datasheet - production data
Description
The KF series are very low drop regulators
available in SO-8 and DPAK packages and in a
wide range of output voltages.
The very low dropout voltage (0.4 V) and the very
low quiescent current make them particularly
suitable for low noise, low power applications and
especially 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 µF
capacitor for stability allowing space and cost
saving.
SO-8 (tape and reel)
KF25BD-TR
KF33BD-TR
KF50BD-TR
Table 1. Device summary
Order codes
DPAK (tape and reel)
KF25BDT-TR
KF33BDT-TR
KF50BDT-TR
KF80BDT-TR
Output voltages
2.5 V
3.3 V
5V
8V
February 2018
This is information on a product in full production.
DocID4337 Rev 14
1/21
www.st.com


STMicroelectronics Electronic Components Datasheet

KF25BD-TR Datasheet

Very low drop voltage regulators

No Preview Available !

Contents
Contents
KFXX
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21 DocID4337 Rev 14


Part Number KF25BD-TR
Description Very low drop voltage regulators
Maker STMicroelectronics
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KF25BD-TR Datasheet PDF






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