Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

UC1843A Folha de dados(PDF) 4 Page - Microsemi Corporation

Nome de Peças UC1843A
Descrição Electrónicos  CURRENT MODE PWM CONTROLLER
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  MICROSEMI [Microsemi Corporation]
Página de início  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

UC1843A Folha de dados(HTML) 4 Page - Microsemi Corporation

  UC1843A Datasheet HTML 1Page - Microsemi Corporation UC1843A Datasheet HTML 2Page - Microsemi Corporation UC1843A Datasheet HTML 3Page - Microsemi Corporation UC1843A Datasheet HTML 4Page - Microsemi Corporation UC1843A Datasheet HTML 5Page - Microsemi Corporation UC1843A Datasheet HTML 6Page - Microsemi Corporation UC1843A Datasheet HTML 7Page - Microsemi Corporation UC1843A Datasheet HTML 8Page - Microsemi Corporation  
Zoom Inzoom in Zoom Outzoom out
 4 / 8 page
background image
C URRENT M ODE PWM C ONTROLLER
UC184xA/284xA/384xA
PRODUCT DA T ABOOK 1996/1997
Copyright © 1995
Rev. 1.2
12/95
4
P RODUCTION D ATA S HEET
ELECTRICAL CHARACTERISTICS
(Con't.)
Under-Voltage Lockout Section
Parameter
Symbol
Test Conditions
Start Threshold
x842A/4A
x843A/5A
Min. Operation Voltage After Turn-On
x842A/4A
x843A/5A
UC384xA
Units
Min. Typ. Max. Min. Typ. Max.
UC184xA/284xA
15
16
17
14.5
16
17.5
V
7.8
8.4
9.0
7.8
8.4
9.0
V
9
10
11
8.5
10
11.5
V
7.0
7.6
8.2
7.0
7.6
8.2
V
PWM Section
Maximum Duty Cycle
x842A/3A
x844A/5A
Minimum Duty Cycle
94
96
100
94
96
100
%
47
48
50
47
48
50
%
00
%
Total Standby Section
Start-Up Current
Operating Supply Current
I
CC
Zener Voltage
V
Z
I
CC = 25mA
0.3
0.5
0.3
0.5
mA
11
17
11
17
mA
30
35
30
35
V
BLOCK DIAGRAM
* - VCC and VC are internally connected for 8 pin packages.
** - POWER GROUND and GROUND are internally connected for 8 pin packages.
*** - Toggle flip flop used only in x844A and x845A series.
Notes: 2. These parameters, although guaranteed, are not 100% tested in
production.
3. Parameter measured at trip point of latch with V
VFB
= 0.
4. Gain defined as: A
VOL =
; 0
≤ V
ISENSE ≤ 0.8V.
5. Adjust V
CC above the start threshold before setting at 15V.
6. Output frequency equals oscillator frequency for the UC1842A
and UC1843A. Output frequency is one half oscillator frequency
for the UC1844A and UC1845A.
7. "Temperature stability, sometimes referred to as average temperature
coefficient, is described by the equation:
Temp Stability =
V
REF (max.) & V REF (min.) are the maximum & minimum reference
voltage measured over the appropriate temperature range. Note that
the extremes in voltage do not necessarily occur at the extremes in
temperature."
V
REF
(max.) - V
REF
(min.)
T
J
(max.) - T
J
(min.)
∆ V
COMP
∆ V
ISENSE
UVLO
S / R
5V
Ref
Internal
Bias
34V
Error Amp
1V
Current Sense
Comparator
PWM
Latch
S
R
R
Oscillator
2R
**
T
***
V
REF
Good Logic
2.5V
UVLO
16V (1842A/4A)
8.4V (1843A/5A)
Hysteresis
6V (1842A/4A)
0.8V (1843A/5A)
COMP
CURRENT SENSE
V
FB
R
T/CT
GROUND
*
V
CC
V
REF
5.0V
50mA
V
C
*
OUTPUT
POWER GROUND**


Nº de peça semelhante - UC1843A

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Texas Instruments
UC1843A TI-UC1843A Datasheet
517Kb / 11P
[Old version datasheet]   Current Mode PWM Controller
UC1843A TI-UC1843A Datasheet
425Kb / 11P
[Old version datasheet]   CURRENT-MODE PWM CONTROLLER
UC1843A TI-UC1843A Datasheet
517Kb / 7P
[Old version datasheet]   Current Mode PWM Controller
UC1843A TI1-UC1843A Datasheet
3Mb / 29P
[Old version datasheet]   Current Mode PWM Controller
UC1843A TI1-UC1843A Datasheet
1Mb / 45P
[Old version datasheet]   Current-Mode PWM Controller
More results

Descrição semelhante - UC1843A

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
NXP Semiconductors
UC3842 PHILIPS-UC3842 Datasheet
74Kb / 8P
   Current-mode PWM controller
August 31, 1994
logo
Daewoo Semiconductor
DBL3842 DAEWOO-DBL3842 Datasheet
467Kb / 8P
   CURRENT MODE PWM CONTROLLER
logo
BCD Semiconductor Manuf...
AP384XC BCDSEMI-AP384XC Datasheet
176Kb / 13P
   CURRENT MODE PWM CONTROLLER
logo
Cystech Electonics Corp...
MC7731N6 CYSTEKEC-MC7731N6 Datasheet
363Kb / 10P
   Current Mode PWM Controller
logo
BCD Semiconductor Manuf...
AP3842C BCDSEMI-AP3842C Datasheet
359Kb / 14P
   CURRENT MODE PWM CONTROLLER
logo
Texas Instruments
UC1846AJ TI-UC1846AJ Datasheet
3Mb / 13P
[Old version datasheet]   Current Mode PWM Controller
UC3844Q TI1-UC3844Q Datasheet
708Kb / 28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
UC1843 TI-UC1843 Datasheet
937Kb / 3P
[Old version datasheet]   Current Mode PWM Controller
UC2846J TI-UC2846J Datasheet
463Kb / 8P
[Old version datasheet]   Current Mode PWM Controller
logo
List of Unclassifed Man...
AMC3842B ETC-AMC3842B Datasheet
365Kb / 10P
   CURRENT MODE PWM CONTROLLER
CM3842 ETC-CM3842 Datasheet
638Kb / 12P
   CURRENT MODE PWM CONTROLLER
More results


Html Pages

1 2 3 4 5 6 7 8


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
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