a. Device mounted with all leads soldered or welded to PC board.
b. Derate 8.3 mW/_C above T
A
= 25_C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
b. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. Typical values for dropout voltage at V
OUT
w
2 V are measured at
V
OUT
= 3.3 V, while typical values for dropout voltage at V
OUT
< 2 V are measured at V
OUT
= 1.8 V.
d. Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 2% below the output voltage measured with a 1-V
differential, provided that V
IN
does not not drop below 2.0 V.
e. The device’s shutdown pin includes a typical 6-MW internal pull-down resistor connected to ground.
f.
V
OUT
is defined as the output voltage of the DUT at 1 mA.
g. The Error Output (Low) function is guaranteed from V
OUT
= 2.0 V to V
OUT
= 5.0 V.
h. The Power_Good trip threshold function is guaranteed from V
OUT
= 1.5 V to V
OUT
= 5.0 V and V
IN
w
2.0 V.
Document Number: 71119
S-50955—Rev. F, 16-May-05
www.vishay.com
3
Si9181
Vishay Siliconix
TIMING WAVEFORMS
V
IN
t
ON
V
NOM
0.95 V
NOM
V
OUT
ERROR
t
DELAY
FIGURE 4.
Timing Diagram for Power-Up
PIN CONFIGURATION
TSSOP-8
C
NOISE
DELAY
GND
V
IN
1
2
3
4
Top View
8
7
6
5
SD
ERROR
SENSE or ADJ
V
OUT
PIN DESCRIPTION
Pin Number
1
2
3
4
5
6
7
8
www.vishay.com
Name
C
NOISE
DELAY
GND
V
IN
V
OUT
SENSE or ADJ
ERROR
SD
Function
Noise bypass pin. For low noise applications, a 0.01-mF or larger ceramic capacitor should be connected from this pin
to ground.
Capacitor connected from this pin to ground will allow a delayed power-on-reset signal at the ERROR (Pin 7) output.
Refer to Figure 4.
Ground pin. Local ground for C
NOISE
and C
OUT
.
Input supply pin. Bypass this pin with a 2.2-mF ceramic or tantalum capacitor to ground.
Output voltage. Connect C
OUT
between this pin and ground.
For fixed output voltage versions, this pin should be connected to V
OUT
(Pin 5). For adjustable output voltage version,
this voltage feedback pin sets the output voltage via an external resistor divider.
This open drain output is an error flag output which goes low when V
OUT
drops 5% below its nominal voltage. This pin
also provides a power-on-reset signal if a capacitor is connected to the DELAY pin.
By applying less than 0.4 V to this pin, the device will be turned off. Connect this pin to V
RT, for high real-time performance, I want to rewrite the DM9000 driver under wince6.0, using the 6410 platform. According to the 6410 chip manual, the physical memory address corresponding to DM9000 ...
I saw a news on this website: Verifying FPGA Design: Simulation, Emulation, or Luck? [url=https://www.eeworld.com.cn/FPGA/2009/0507/article_590_1.html]https://www.eeworld.com.cn/FPGA/2009/0507/article...
Ten years have passed, but I still have nothing. Looking back, I feel so desolate. Because of my low education, I cannot enter well-known enterprises. Only some small companies hire me because of my r...
1. Blocked a person who posted illegal ads; 2. Caught a person who was posting pure water to earn points, and deleted all the pure water. After deleting, this guy owed 31 core coins... No way :)...
With the explosive growth of TWS headphones, higher requirements are placed on the battery life of headphones and battery boxes. Generally, the battery life can be improved from the following points:
...
The sampling rate is 44.1K per second, which means there are hundreds of thousands of data in a few seconds. Can such a voice signal be viewed as an image using Gragh command? How to set the array? It...
1. Introduction
Since the 1980s, with the continuous development of automotive electronic technology, there are more and more electronic control units in automobiles, such as electronic fuel i...[Details]
0. Introduction
In daily life, we often see some special-purpose vehicles. When these vehicles pass through intersections, they often obtain the right of way at intersections by temporarily op...[Details]
1 Introduction
With the acceleration of the pace of urban modernization, society has higher requirements for urban road lighting and urban lighting projects. The state has clearly required tha...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
From the PIC16F946 datasheet, we know that there are two ways to write values to the LCD for display:
1. Directly write the value to LCDDATA1~LCDDATA23
2. Use disconnect t...[Details]
This week, Microsoft held its 2012 Microsoft Worldwide Partner Conference (WPC) in Toronto, Canada. At the conference, Microsoft showed its new products and services to partners around the world. A...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
With the rapid development of wireless
digital communication
, more challenges have been raised for integrated circuit design and testing. In the product design stage, in order to ensure
t...[Details]
The launch of Shenzhou IX is imminent, and Tiangong is welcoming visitors again. Yesterday, Professor Fu Qiang, Vice President of the Institute of Science and Industrial Technology of Harbin Instit...[Details]
0 Introduction
There are many types of sensors, and the working principles, measurement targets and measurement environments of different types of sensors vary greatly. The corresponding detection s...[Details]
The demand for improved healthcare environments is endless, so medical imaging equipment with higher resolution is needed to better observe the human body. High resolution brings problems with sign...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
