US1260 Datasheet, PDF (8/9 Pages) UNISEM – DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

US1260
TYPICAL APPLICATION
RAMBUS APPLICATION
1260app6-1.0
5V
C1
U1
US1260
Vout1 7
Vin 6
Vout2 5
Gnd 4
Vfb2 3
Vfb1 2
Vctrl 1
2.5V
R1
C2
R2
3.3V
R3
C3
R4
Figure 5- Typical application of US1260 in the Rambus™ design with the 2.5V output providing for memory
termination while 3.3V supplies the on board logic.
Notes:Rambus is trade mark of Rambus Corp.
Ref Desig
U1
C1,C2,C3
R1
R2,R4
R3
HS1
Description
Qty Part #
Manuf
Dual LDO Regulator 1 US1260CM
Unisem
Capacitor
3 Elect,220uF,6.3V,ECAOJFQ221 Panasonic
Resistor
1 11 kΩ , 1%, SMT , 0805
Panasonic
Resistor
2 10.2 kΩ , 1%, SMT , 0805
Panasonic
Resistor
1 17.8 kΩ , 1%, SMT , 0805
Panasonic
Heat Sink
1" Square Copper Pad area if Iout2<1.2A & Iout1<0.5A
For Iout2<3A & Iout1<0.5A Use Thermalloy 6030B
3-8
Rev. 1.9
3/22/99