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Numéro de référence | uP7701 | ||
Description | 3A Ultra Low Dropout Linear Regulator | ||
Fabricant | uPI Semiconductor | ||
Logo | |||
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
100mΩ typical
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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Pages | Pages 11 | ||
Télécharger | [ uP7701 ] |
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