DataSheet.jp

US1075CM の電気的特性と機能

US1075CMのメーカーはUNISEMです、この部品の機能は「7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR」です。


製品の詳細 ( Datasheet PDF )

部品番号 US1075CM
部品説明 7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
メーカ UNISEM
ロゴ UNISEM ロゴ 




このページの下部にプレビューとUS1075CMダウンロード(pdfファイル)リンクがあります。
Total 5 pages

No Preview Available !

US1075CM Datasheet, US1075CM PDF,ピン配置, 機能
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

1 Page





US1075CM pdf, ピン配列
US1075
PIN DESCRIPTIONS
PIN #
1
2
3
PIN SYMBOL
Adj
Vout
Vin
PIN DESCRIPTION
A resistor divider from this pin to the Vout pin and ground sets the output voltage.
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 +
1075blk1-1.0
1 Adj
Figure 1 - Simplified block diagram of the US1050
APPLICATION INFORMATION
Introduction
The US1075 adjustable Low Dropout (LDO) regulator is
a 3 terminal device which can easily be programmed
with the addition of two external resistors to any volt-
ages within the range of 1.25 to 5.5 V.This regulator
unlike the first generation of the 3T regulators such as
LM117 that required 3V differential between the input
and the regulated output,only needs 1.3V differential to
maintain output regulation. This is a key requirement for
today’s microprocessors that need typically 3.3V sup-
ply and are often generated from the 5V supply. Another
major requirement of these microprocessors such as
the Intel P54Cis the need to switch the load current
from zero to several amps in tens of nanoseconds at
the processor pins ,which translates to an approximately
300 to 500 nS current step at the regulator . In addition,
the output voltage tolerances are also extremely tight
and they include the transient response as part of the
specification.For example Intel VREspecification calls
for a total of ±100mV including initial tolerance,load regu-
lation and 0 to 4.6A load step.
The US1075 is specifically designed to meet the fast
current transient needs as well as providing an accurate
initial voltage , reducing the overall system cost with the
need for fewer output capacitors.
Rev. 1.0
9/14/99
2-35


3Pages





ページ 合計 : 5 ページ
 
PDF
ダウンロード
[ US1075CM データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
US1075CM

7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

UNISEM
UNISEM
US1075CP

7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

UNISEM
UNISEM
US1075CT

7.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR

UNISEM
UNISEM


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap