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US1150CP fiches techniques PDF

UNISEM - 4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

Numéro de référence US1150CP
Description 4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
Fabricant UNISEM 
Logo UNISEM 





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US1150CP fiche technique
FEATURES
0.7V Dropout at 4A
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built-in Thermal Shutdown
APPLICATIONS
3.3V to 2.7V Intel I740 chip set.
US1150
4A ULTRA LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
PRELIMINARY DATASHEET
DESCRIPTION
The US1150 product is a 4A regulator with extremely
low dropout voltage using a proprietary Bipolar pro-
cess that achieves comparable equivalent on re-
sistance to that of discrete MOSFETs. This product is
specifically designed to provide well regulated supply for
applications requiring 2.8V or lower voltages from
3.3V ATX power supplies where high efficiency of
a switcher can be achieved without the cost and
complexity associated with switching regulators.
One such application is the new graphic chip sets that
require anywhere from 2.4V to 2.7V supply such as the
Intel I740 chip set.
TYPICAL APPLICATION
3.3V
C1
Vin 5
US1150
Vctrl 4
Vout 3
Adj 2
Vsense 1
1150app1-1.0
5V
C2
2.7V
R1
C3
R2
Typical application of US1150 in a 3.3V to 2.7V for I740 chip.
PACKAGE ORDER INFORMATION
Tj (°C)
0 TO 125
5 PIN PLASTIC 5 PIN PLASTIC 8 PIN PLASTIC
TO263 (M) POWER FLEX (P) SOIC (S)
US1150CM
US1150CP
US1150CS
Rev. 1.2
10/28/99
2-1

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