Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

TC18C46 Fiches technique(PDF) 1 Page - TelCom Semiconductor, Inc

No de pièce TC18C46
Description  CMOS CURRENT MODE PWM CONTROLLER
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TELCOM [TelCom Semiconductor, Inc]
Site Internet  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC18C46 Fiches technique(HTML) 1 Page - TelCom Semiconductor, Inc

  TC18C46 Datasheet HTML 1Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 2Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 3Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 4Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 5Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 6Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 7Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 8Page - TelCom Semiconductor, Inc TC18C46 Datasheet HTML 9Page - TelCom Semiconductor, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 10 page
background image
4-101
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The TC38C46 is a current mode CMOS PWM control
IC. It draws only 2 mA supply current, so it can be driven
without a costly 50-60 Hz transformer. The output drive
stage is capable of high drive currents, 300mA typical.
The TC38C46 is pin compatible with earlier bipolar
products so that designers can easily update older designs.
A number of improvements have been added.
This second generation part has been designed with an
isolated drive stage. Unlike its cousin, the TC170, the output
stage of the TC38C46 can be run from a separate power
supply such as a secondary winding on an output trans-
former. This allows for bootstrap start-up of the power
supply.
CMOS CURRENT MODE PWM CONTROLLER
FEATURES
s
Isolated Output Drive
s
Low Power CMOS Construction
s
Low Supply Current ................................. 2mA Typ.
s
Wide Supply Voltage Operation .............. 8V to 18V
s
Latch-Up Immunity ................... 500mA on Outputs
s
Above and Below Rail Input Protection ............. 6V
s
High Output Drive ................................ 500mA Peak
s
Current Mode Control
s
Fast Rise/Fall Time ..................... 50nsec @ 1000pF
s
High Frequency Operation .......................... 500kHz
s
UV Hysteresis Guaranteed
s
Programmable Current Limit
s
Shutdown Pin Available
s
Double Ended
s
Soft Start
s
Low Prop Delay Current Amp
to Output ......................................... < 350nsec Typ.
s
Low Prop Delay Shutdown
to Output ......................................... < 400nsec Typ.
s
TC38C46Pin Compatible with Unitrode UC3846
s
ESD Protected .................................................
±2 kV
+
+
+VS
+
+
.65V
– +
+
D
Q
C
Q
100
µA
PWM
COMPARATOR
LIMIT BUFFER
AMPLIFIER
LOCK-UP
AMPLIFIER
CURRENT SENSE
AMPLIFIER
ERROR
AMPLIFIER
350mV
Q1
Q2
3.5k
350mV
6k
SHUTDOWN
COMPARATOR
SHUTDOWN
CURRENT LIMIT
SOFT START ADJUST
TC38C46 OUTPUTS
LOW IN OFF STATE
OUTPUT A
VDD
GROUND
OUTPUT B
PWM LATCH
VIN
RT
CT
SYNC
– CURRENT
SENSE INPUT
+ ERROR
AMP INPUT
– ERROR
AMP INPUT
+ CURRENT
SENSE INPUT
COMPENSATION
Q3
VREF
2
12
14
1
16
11
13
15
9
8
10
3
4
7
5
6
TC18C46
TC28C46
TC38C46
Q4
POSITIVE
FEEDBACK
+
+
5.1 VOLT
REFERENCE
UNDER VOLTAGE
LOCKOUT
OSCILLATOR
S
Q
S
R
x3
ORDERING INFORMATION
Part No.
Configuration
Pkg./Temperature
TC18C46MJE
Non-Inverting
16-Pin CerDIP
– 55
°C to +125°C
TC28C46EOE
Non-Inverting
16-Pin SOIC (Wide)
– 40
°C to +85°C
TC28C46EPE
Non-Inverting
16-Pin Plastic DIP (Narrow)
– 40
°C to +85°C
TC38C46COE
Non-Inverting
16-Pin SOIC (Wide)
0
°C to +70°C
TC38C46CPE
Non-Inverting
16-Pin Plastic DIP (Narrow)
0
°C to +70°C
TC18/28/28/C46-8 9/23/96
TC18C46
TC28C46
TC38C46


Numéro de pièce similaire - TC18C46

FabricantNo de pièceFiches techniqueDescription
logo
TelCom Semiconductor, I...
TC18C46 TELCOM-TC18C46 Datasheet
531Kb / 14P
   CMOS CURRENT MODE PWM CONTROLLER?
TC18C46MJE TELCOM-TC18C46MJE Datasheet
531Kb / 14P
   CMOS CURRENT MODE PWM CONTROLLER?
More results

Description similaire - TC18C46

FabricantNo de pièceFiches techniqueDescription
logo
Microchip Technology
TC170 MICROCHIP-TC170 Datasheet
476Kb / 16P
   CMOS Current Mode PWM Controller
2002
logo
TelCom Semiconductor, I...
TC18C46 TELCOM-TC18C46 Datasheet
531Kb / 14P
   CMOS CURRENT MODE PWM CONTROLLER?
TC170 TELCOM-TC170 Datasheet
104Kb / 8P
   CMOS CURRENT MODE PWM CONTROLLER
logo
Anpec Electronics Corop...
APW38HC42 ANPEC-APW38HC42 Datasheet
136Kb / 11P
   CMOS Current-Mode PWM Voltage Controller
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
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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