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US1050-33CD の電気的特性と機能

US1050-33CDのメーカーはUNISEMです、この部品の機能は「5A LOW DROPOUT POSITIVE FIXED 3.3V OUTPUT REGULATOR」です。


製品の詳細 ( Datasheet PDF )

部品番号 US1050-33CD
部品説明 5A LOW DROPOUT POSITIVE FIXED 3.3V OUTPUT REGULATOR
メーカ UNISEM
ロゴ UNISEM ロゴ 




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US1050-33CD Datasheet, US1050-33CD PDF,ピン配置, 機能
US1050-33
5A LOW DROPOUT POSITIVE
FIXED 3.3V OUTPUT 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
APPLICATIONS
Standard 3.3V Chip-Set and Logic Applications
DESCRIPTION
The US1050-33 product is a low dropout three terminal
fixed 3.3V output regulator with minimum of 5A output
current capability. This product is specifically designed
to provide well regulated supply for low voltage IC appli-
cations requiring 3.3V output. The US 1050-33 is guar-
anteed to have <1.3V drop out at full load current
making it ideal to provide well regulated output with sup-
ply voltage as low as 4.6V input.
TYPICAL APPLICATION
5V
C1
330uF
Vin 3
US1050-33 Vout 2
1050-33app1-1.1
Gnd 1
Typical application of US1050-33
3.3V / 5A
C2
330uF
Tj (°C)
0 TO 150
3 PIN PLASTIC
TO220 (T)
US1050-33CT
3 PIN PLASTIC
TO263 (M)
US1050-33CM
2 PIN PLASTIC
POWER FLEX (P)
US1050-33CP
3 PIN PLASTIC
TO252 (D)
US1050-33CD
Rev. 1.1
10/27/00
2-33

1 Page





US1050-33CD pdf, ピン配列
US1050-33
PIN DESCRIPTIONS
PIN #
1
2
3
PIN SYMBOL
Gnd
Vout
Vin
PIN DESCRIPTION
This pin must be connected to GND plane using a low inductance short connection.
The output of the regulator. A minimum of 10uF capacitor must be connected
from this pin to ground to insure stability.
The input pin of the regulator. Typically a large storage capacitor is connected
from this pin to ground to insure that the input voltage does not sag below the
minimum drop out voltage during the load transient response. This pin must
always be 1.3V higher than Vout in order for the device to regulate properly.
BLOCK DIAGRAM
Vin 3
2 Vout
+
CURRENT
LIMIT
THERMAL
SHUTDOWN
1.25V +
1050-33blk1-1.0
1 Gnd
Figure 1 - Simplified block diagram of the US1050-33
APPLICATION INFORMATION
Stability
The US1050-33 requires the use of an output capacitor
as part of the frequency compensation in order to make
the regulator stable. Typical designs for microproces-
sor applications use standard electrolytic capacitors with
a typical ESR in the range of 50 to 100 mand an
output capacitance of 500 to 1000uF. Fortunately as
the capacitance increases, the ESR decreases result-
ing in a fixed RC time constant. The US1050-33 takes
advantage of this phenomena in making the overall regu-
lator loop stable.For most applications a minimum of
100uF aluminum electrolytic capacitor such as Sanyo
MVGX series ,Panasonic FA series as well as the
Nichicon PL series insures both stability and good tran-
sient response.
Rev. 1.1
10/27/00
2-35


3Pages





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共有リンク

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部品番号部品説明メーカ
US1050-33CD

5A LOW DROPOUT POSITIVE FIXED 3.3V OUTPUT REGULATOR

UNISEM
UNISEM
US1050-33CM

5A LOW DROPOUT POSITIVE FIXED 3.3V OUTPUT REGULATOR

UNISEM
UNISEM
US1050-33CP

5A LOW DROPOUT POSITIVE FIXED 3.3V OUTPUT REGULATOR

UNISEM
UNISEM
US1050-33CT

5A LOW DROPOUT POSITIVE FIXED 3.3V OUTPUT REGULATOR

UNISEM
UNISEM


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