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

US1260
DUAL 6A AND 1A LOW DROPOUT
POSITIVE ADJUSTABLE REGULATOR
FEATURES
Guaranteed <1.3V Dropout at 6A (output #2)
Guaranteed <0.6V Dropout at 1A (output #1)
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built in Thermal Shutdown
APPLICATIONS
Providing a single package solution for GTL+
and High Speed Bus Termination
Dual supply P55C™ applications
DESCRIPTION
The US1260 product using a proprietary process com-
bines a dual low drop out adjustable output regulators in
a single package with one output having a minimum of
6A and the other one having a 1A output current capabil-
ity. This product is specifically designed to provide well
regulated supplies for low voltage ICs such as 3.3V to
1.5V and 2.5V supplies for the GTL+ termination
and the new clock for Pentium II applications.Other
applications include low cost dual supply for proces-
sors such as Intel P55C™ where 2.8V and 3.3 V are
needed for the Core and the I/O supplies from the
5V input.
TYPICAL APPLICATION
3.3V
C1
R1
R2
Vout1 7
U1
Vin 6
Vout2 5
US1260 ^{Gnd 4}
C4
R3
Vfb2 3
R4
Vfb1 2
R5
Vctrl 1
C5
1260app7-1.0
5V
2.5V / 1A
C2
1.5V / 6A
C3
Typical application of US1260 in the Pentium ΙΙ™ design with the 1.5V output providing for GTL+ termination
while 2.5V supplies the clock chip.
Notes: Pentium ΙΙ is trade mark of Intel Corp.
Notes: P55C is trade mark of Intel Corp.
PACKAGE ORDER INFORMATION
Tj (°C)
0 TO 150
7 PIN PLASTIC
TO220(T)
US1260CT
7 PIN PLASTIC
TO263(M)
US1260CM
7 PIN PLASTIC
POWER FLEX(P)
US1260CP
Rev. 1.9
3/22/99
3-1