SC4205
SC4205 is Very Low Dropout 1 Amp Regulator manufactured by SEMTECH.
Very Low Dropout 1 Amp Regulator With Enable
POWER MANAGEMENT Description
The SC4205 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 1 Amp. Since it has superior dropout characteristics pared to regular LDOs, it can be used to supply 2.5V on motherboards or 2.8V on peripheral cards from the 3.3V supply thus allowing the elimination of costly heatsinks. Additionally, the SC4205 has an enable pin to further reduce power dissipation while shut down. The SC4205 provides ex.. cellent regulation over variations in line, load and temperature. The SC4205 is available in the SOIC-8EDP package with internally preset outputs that are also adjustable using external resistors.
Features
350m V dropout @ 1A Adjustable output from 1.2V to 4.8V 2.5V and 1.8V options (adjustable externally using resistors) Over current and over temperature protection Enable pin 10µA quiescent current in shutdown Low reverse leakage (output to input) Surface mount and through-hole packages Full industrial temperature range Available in SOIC-8EDP package
Applications
Battery powered systems Motherboards Peripheral cards Network cards Set Top Boxes Medical Equipment Notebook puters
Typical Application Circuits
4 NC VIN EN NC
NC VO ADJ GND
5 6 7 8
VIN ENABLE
3 2 1
R1
C2
=
1.2 (R1 + R2) R2
Volts
C1
U1
R2
4 NC VIN EN NC NC VO ADJ GND 5 6 7 8 4 NC VIN EN NC
NC VO ADJ GND 5 6 7 8
VIN ENABLE
3 2 1
VIN ENABLE
3 2...
