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US1150 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 US1150
部品説明 4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
メーカ UNISEM
ロゴ UNISEM ロゴ 



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US1150 Datasheet, US1150 PDF,ピン配置, 機能
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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