US1261 UNISEM, US1261 Datasheet - Page 6

• Manufacturer Part Number: US1261
• Description: DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR
• Manufacturer: UNISEM

US1261
TYPICAL APPLICATION
TYPICAL APPLICATION
PENTIUM
3-6
Figure 4 - Typical application of US1261 in the Pentium
Notes: Pentium
Ref Desig
U1
C1,C4
C3
C2
R1
HS1
1261app1-1.3
APPLICATION
is trade mark of Intel Corp.
Heat Sink 1)Use 1" Square Copper Pad area if Iout2<1.7A & Iout1<0.2A.
Description
Dual LDO Regulator
Capacitor
Capacitor
Capacitor
Resistor
US1261
3.3V
5V
2)For Iout2<3A & Iout1<0.5A Use US1261CT and Thermalloy
3)For Iout2<5.4A & Iout1<0.5A Use US1261CT and Thermalloy
termination while 2.5V supplies the clock chip.
6030B
7021B
Vout1
Vout2
Vctrl
Gnd
Vin
Qty
R1
1
2
1
1
1
C1
5
4
3
2
1
Part #
US1261CM
Elect,680uF,EEUFA1A681L
Elect,220uF,6.3V,ECAOJFQ221
Ceramic,1uF,16V,Z5U
3
W , 0805 SMT
C2
design with the 1.5V output providing for GTL+
Manuf
Unisem
Panasonic
Panasonic
Panasonic
C3
C4
2.5V / 1A
1.5V / 6A
Rev. 1.7
3/22/99