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uP7701 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 uP7701
部品説明 3A Ultra Low Dropout Linear Regulator
メーカ uPI Semiconductor
ロゴ uPI Semiconductor ロゴ 



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uP7701 Datasheet, uP7701 PDF,ピン配置, 機能
uP7701
3A Ultra Low Dropout Linear Regulator
General Description
Features
The uP7701 is a 3A ultra low dropout linear regulator
specifically designed for motherboard,notebook and graphic
card applications. This device works with dual supplies, a
control input for the control circuitry and a power input as
low as 1.0V for providing current to output. The uP7701
delivers high-current and ultra-low-drop output voltage as
low as 0.8V for applications where VOUT is very close to
VIN.
The uP7701 features comprehensive control and protection
functions: a power on reset (POR) circuit for monitoring
both control and power inputs for proper operation; an EN
input for enabling or disabling the device, a power OK with
time delay for indicating the output voltage status, a
foldback current limit function, and a thermal shutdown
function.
The uP7701 is available in PSOP-8 package with very low
thermal resistance.
Applications
† Desktop PCs, Notebooks, and Workstations
† Graphic Cards
† Low Voltage Logic Supplies
† Microprocessor and Chipset Supplies
† Split Plane Microprocessor Supplies
† Advanced Graphics Cards Supplies
† SoundCards and Auxiliary Power Supplies
† SMPS Post Regulators
† Works with 1.0V~5.5V VIN
„ Adjustable Output Voltage, Down to 0.8V
„ 1.5% Initial Accuracy
„ Excellent Line and Load Regulation
† 3A Guaranteed Output Current
„ 300mV @ 3A Dropout Voltage
† Very Low On-Resistance
„ 100mtypical
† VOUT Pull Low Resistance when Disabled
† Low Reverse Leakage (Output to Input )
† VOUT Power OK Signal
† Fast Transient Response
† Low External Component Count
† Low Cost and Easy to Use
† Enable Pin
† Over Current and Over Temperature Protection
Ordering Information
Order Number
uP7701U8
Package Type
PSOP-8
Remark
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 and RoHS requirements. They are 100%
matte tin (Sn) plating and suitable for use in SnPb or Pb-
free soldering processes.
Pin Configuration & Typical Application Circuit
POK
EN
VIN
CNTL
18
27
GND
36
45
uP7701
GND
FB
VOUT
NC
5VCC
R4
10R
VIN
C1
1uF
C2
4.7uF
CNTL
EN
2
4
POK
1
VIN
3
VOUT
6
NC 5
FB
7
8
GND
R3
10K
R2
12.5K
R1
10K
VOUT
C4
option
C3
10uF
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. 00, 2007, April
1

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