US1260

3-8

Rev. 1.9

3/22/99

TYPICAL APPLICATION

TYPICAL APPLICATION

RAMBUS APPLICATION

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.

5V

2.5V

3.3V

C1

R1

R2

R3

R4

C2

C3

US1260

1260app6-1.0

Vctrl

Vfb1

Vfb2

Gnd

Vout2

Vin

Vout1

1

2

3

4

5

6

7

U1

Ref Desig

Description

Qty

Part #

Manuf

U1

Dual LDO Regulator

1

US1260CM

Unisem

C1,C2,C3

Capacitor

3

Elect,220uF,6.3V,ECAOJFQ221

Panasonic

R1

Resistor

1

11 k

Ω , 1%, SMT , 0805

Panasonic

R2,R4

Resistor

2

10.2 k

Ω , 1%, SMT , 0805

Panasonic

R3

Resistor

1

17.8 k

Ω , 1%, SMT , 0805

Panasonic

HS1

Heat Sink

1" Square Copper Pad area if Iout2<1.2A & Iout1<0.5A

For Iout2<3A & Iout1<0.5A Use Thermalloy 6030B