US1050
5A LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
FEATURES
Guaranteed < 1.3V Dropout at Full Load
Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Output Current Limiting
Built-in Thermal Shutdown
DESCRIPTION
The US1050 product is a low dropout three terminal ad-
justable regulator with minimum of 5A output current
capability. This product is specifically designed to pro-
vide well regulated supply for low voltage IC applications
such as
Pentium
™
P54C
™
,P55C
™
as well as
GTL+
termination for Pentium Pro
™
and Klamath
™
pro-
cessor applications . The US1050 is also well suited for
other processors such as
Cyrix
™
,AMD and Power
PC
™
applications. The US 1050 is
guaranteed to have
<1.3V drop out at full load current
making it ideal to
provide well regulated outputs of 2.5V to 3.6V with 4.75V
to 7V input supply.
APPLICATIONS
Low Voltage Processor Applications such as :
P54C
™
,P55C
™
,Cyrix M2
™
,
POWER PC
™
,AMD
GTL+ Termination
PENTIUM PRO
™
, KLAMATH
™
Low Voltage Memory Termination Applications
Standard 3.3V Chip-Set and Logic Applications
TYPICAL APPLICATION
5V
C1
1500uF
Vin
3
US1050
Vout
2
R1
121
3.38V / 5A
C2
2x 1500uF
Adj
1
R2
205
1050app1-1.1
Typical Application of US1050 in a 5V to 3.38V regulator designed
to meet the Intel P54C
™
Processors.
Notes: Pentium P54C,P55C ,Klamath,Pentium Pro,VRE,are trade marks of Intel Corp.Cyrix M2 is trade mark of Cyrix Corp.
Power PC is trade mark of IBM Corp.
PACKAGE ORDER INFORMATION
Tj (°C)
0 TO 150
3 PIN PLASTIC
TO220 (T)
US1050CT
3 PIN PLASTIC
TO263 (M)
US1050CM
2 PIN PLASTIC
POWER FLEX (P)
US1050CP
3 PIN PLASTIC
TO252 (D)
US1050CD
Rev. 1.3
10/27/00
2-33
UNISEM [ UNISEM ]
