поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

UC1903L883B датащи(PDF) 8 Page - Texas Instruments

Click here to check the latest version.
номер детали UC1903L883B
подробное описание детали  Quad Supply and Line Monitor
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

UC1903L883B датащи(HTML) 8 Page - Texas Instruments

Back Button UC1903L883B Datasheet HTML 4Page - Texas Instruments UC1903L883B Datasheet HTML 5Page - Texas Instruments UC1903L883B Datasheet HTML 6Page - Texas Instruments UC1903L883B Datasheet HTML 7Page - Texas Instruments UC1903L883B Datasheet HTML 8Page - Texas Instruments UC1903L883B Datasheet HTML 9Page - Texas Instruments UC1903L883B Datasheet HTML 10Page - Texas Instruments UC1903L883B Datasheet HTML 11Page - Texas Instruments UC1903L883B Datasheet HTML 12Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 16 page
background image
+VIN
75 A
m
UC1903
G.P.OP-AMP
OUTPUTSTAGE
D1
TOOP-AMP
INPUTSTAGE
Q6
Q5
Q4
Q1
Q2
Q3
R1
10kW
R2
15 W
R3
150 W
OUTPUT
150 A
m
R4
500 W
16
Sensing a Negative Voltage Level
Note: A similar scheme w/the G.P. op-amp will allow a sec-
ond negative supply to be monitored.
2.5V
R1
R2
VS
UC1903
SENSE4INPUT
SENSE4
INVERTER
GROUND
V (NOM)=2.5V
S
NEGATIVE
SUPPLY (-V )
S
UC1903
UC2903
UC3903
SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008 ........................................................................................................................................ www.ti.com
Figure 4 demonstrates one of many auxiliary functions that the uncommitted op-amp on the UC1903 can be used
for. Alternatively, this op-amp can be used to buffer high impedance points, perform logic functions, or for
sensing and amplification. For example, the G.P. op-amp, combined with the 2.5-V reference, can be used to
produce and buffer an optically coupled feedback signal in isolated supplies with primary side control. The output
stage of this op-amp is detailed in Figure 5. The NPN emitter follower provides high source current capability.
≥20 mA while the substrate device, Q3, provides good transient sinking capability.
A.
The G.P. op-amp on the UC1903 has a high source current (20 mA) capability and enhanced transient sinking
capability through substrate device Q3.
Figure 5. The G.P. Op-Amp on the UC1903
The UC1903 has a dedicated inverter coupled to the sense 4 input. With this inverter, a negative voltage level
can be sensed as shown in Figure 6. The output of the inverter is an unbiased emitter follower. By tying the
inverting input, Pin 5, high the output emitter follower will be reverse biased, leaving the sense 4 input in a high
impedance state. In this manner, the sense 4 input can be used, as the remaining sense inputs would be, for
sensing positive voltage levels.
Figure 6. Inverting the Sense 4 Input for Monitoring a Negative Supply, Accommodated with the
Dedicated Inverter
8
Submit Documentation Feedback
Copyright © 1999–2008, Texas Instruments Incorporated
Product Folder Link(s): UC1903 UC2903 UC3903


Аналогичный номер детали - UC1903L883B

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
UC1903L883B TI1-UC1903L883B Datasheet
808Kb / 16P
[Old version datasheet]   Quad Supply and Line Monitor
More results

Аналогичное описание - UC1903L883B

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
UC1903J TI1-UC1903J Datasheet
808Kb / 16P
[Old version datasheet]   Quad Supply and Line Monitor
UC1903 TI-UC1903 Datasheet
477Kb / 8P
[Old version datasheet]   Quad Supply and Line Monitor
UC1904 TI-UC1904 Datasheet
308Kb / 6P
[Old version datasheet]   Precision Quad Supply and Line Monitor
UC1904 TI1-UC1904_08 Datasheet
335Kb / 7P
[Old version datasheet]   Precision Quad Supply and Line Monitor
logo
Linear Technology
LTC2902 LINER-LTC2902 Datasheet
179Kb / 16P
   Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
logo
Linear Integrated Syste...
LTC2902 LINEAR-LTC2902 Datasheet
176Kb / 16P
   Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
logo
Linear Technology
LTC2902 LINER-LTC2902_15 Datasheet
184Kb / 16P
   Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
LTC2901 LINER-LTC2901 Datasheet
210Kb / 16P
   Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers
LTC2901 LINER-LTC2901_15 Datasheet
197Kb / 16P
   Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers
logo
Analog Devices
ADM9264 AD-ADM9264 Datasheet
181Kb / 12P
   Quad Power Supply Monitor for Desktop PCs
REV. 0
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com