US1260 View Datasheet(PDF) -

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

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