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US1075CP 반도체 회로 부품 판매점

7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR



UNISEM 로고
UNISEM
US1075CP 데이터시트, 핀배열, 회로
FEATURES
1V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Output Current Limiting
Built-in Thermal Shutdown
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
US1075
7.5A LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
DESCRIPTION
The US1075 product is a low dropout three terminal ad-
justable regulator with minimum of 7.5A output current
capability. This product is specifically designed to pro-
vide well regulated supply for low voltage IC applications
such as PentiumP54C,P55Cas well as GTL+
termination for Pentium Proand Klamathpro-
cessor applications . The US1075 is also well suited for
other processors such as Cyrix,AMD and Power
PCapplications. The US 1075 is guaranteed to have
<1.2V drop out at full load current making it ideal to
provide well regulated outputs such as 3.3V with input
supply voltage as low as 4.5V minimum.
TYPICAL APPLICATION
5V
C1
1500uF
Vin 3
1075app1-1.0
US1075 Vout 2
Adj 1
R1
121
R2
200
Typical Application of US1075 in a 5V to 3.3V regulator
3.3V
C2
2x 1500uF
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)
US1075CT
3 PIN PLASTIC
TO263 (M)
US1075CM
3 PIN PLASTIC
POWER FLEX (P)
US1075CP
Rev. 1.0
9/14/99
2-33


US1075CP 데이터시트, 핀배열, 회로
US1075
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) .................................................................. 7V
Power Dissipation ............................................ Internally Limited
Storage Temperature Range .............................. -65°C TO 150°C
Operating Junction Temperature Range .................. 0°C TO 150°C
PACKAGE INFORMATION
3 PIN PLASTIC TO220 ( T ) 3 PIN PLASTIC TO263 ( M ) 3 PIN PLASTIC POWER FLEX ( P )
Tab is
Vout
FRONT VIEW
3
2
1
Vin
Vout
Adj
θJT=2.7°C/W θJA=60°C/W
FRONT VIEW
3
Vin
Tab is
Vout
2 Vout
1 Adj
θJA=35°C/W for 1" Square pad
FRONT VIEW
3
Vin
Tab is
Vout
2 Vout
1 Adj
θJA=35°C/W for 1" Square pad
ELECTRICAL SPECIFICATIONS
Unless otherwise specified ,these specifications apply over ,Cin=1uF,Cout=10uF,and Tj=0 to 150°C.Typical
values refer to Tj=25°C.
PARAMETER
Reference Voltage
Line Regulation
Load Regulation (note 1)
Dropout Voltage
(note 2)
Current Limit
Minimum Load Current
(note 3)
Thermal Regulation
Ripple Rejection
Adjust Pin Current
Adjust Pin Current Change
Temperature Stability
Long Term Stability
RMS Output Noise
SYM
VREF
VO
TEST CONDITION
Io=10mA,Tj=25°C,(Vin-Vo)=1.5V
Io=10mA, (Vin-Vo)=1.5V
Io=10mA,1.3V<(Vin-Vo)<7V
Vin=3.3V,Vadj=0,10mA<Io<7.5A
Io=7.5A
Io=4A
Vin=3.3V,dVo=100mV
Vin=3.3V,Vadj=0V
MIN
1.238
1.225
7.6
TYP
1.250
1.250
0.4
1.0
0.92
9
5
MAX
1.262
1.275
0.2
1.2
1.1
10
UNITS
V
%
%
V
A
mA
30 mS PULSE,Vin-Vo=3V,Io=7.5A
f=120HZ ,Co=25uF Tan
Io=7.5A,Vin-Vo=3V
60
IADJ Io=10mA,Vin-Vo=1.5V,Tj=25
Io=10mA,Vin-Vo=1.5V
Io=10mA,Vin-Vo=1.5V,Tj=25
Vin=3.3V,Vadj=0V,Io=10mA
Tj=125°C,1000 Hrs
Tj=25°C 10hz<f<10khz
0.02
70
55
0.2
0.5
0.3
0.003
120
5
%/W
dB
uA
uA
%
%
%Vo
Note 1 : Low duty cycle pulse testing with Kelvin con-
nections are required in order to maintain accurate data.
Note 2 : Drop-out voltage is defined as the minimum
differential voltage between Vin and Vout required to main-
tain regulation at Vout. It is measured when the output
voltage drops 1% below its nominal value.
Note 3 : Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation. Typically the resistor
dividers are selected such that it automatically main-
tains this current.
2-34
Rev. 1.0
9/14/99




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