US1260
TYPICAL APPLICATION
INTEL I740 GRAPHICS CHIP APPLICATION
3.3V
C1
Vout1
7
6
5
4
3
2
1
Vin
Vout2
Gnd
U1
2.7V
C4
R3
R4
US1260
Vfb2
Vfb1
Vctrl
C3
R5
C5
1260app8-1.0
5V
Figure 6 - Typical application of US1260 to provide 2.7V from the 3.3V bus for the Intel 740 graphics chip.
Ref Desig
U1
C1,C3
C4
C5
R4
Description
Dual LDO Regulator
Capacitor
Capacitor
Capacitor
Resistor
Resistor
Resistor
Qty Part #
Manuf
Unisem
Panasonic
Panasonic
1
2
1
1
1
1
1
US1260CM
Elect,680uF,EEUFA1A681L
Ceramic, 0.1 uF, SMT , 0805
Elect,100uF,6.3V,ECAOJFQ101 Panasonic
10.2 kW , 1%, SMT , 0805
12.7 kW , 1%, SMT , 0805
3 W , 5%, SMT , 0805
Panasonic
Panasonic
Panasonic
R3
R5
Rev. 1.9
3/22/99
3-9
UNISEM [ UNISEM ]
