Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

UC3842 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. UC3842
Description  SMPS Controller
Download  12 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

UC3842 Datasheet(HTML) 4 Page - Fairchild Semiconductor

  UC3842 Datasheet HTML 1Page - Fairchild Semiconductor UC3842 Datasheet HTML 2Page - Fairchild Semiconductor UC3842 Datasheet HTML 3Page - Fairchild Semiconductor UC3842 Datasheet HTML 4Page - Fairchild Semiconductor UC3842 Datasheet HTML 5Page - Fairchild Semiconductor UC3842 Datasheet HTML 6Page - Fairchild Semiconductor UC3842 Datasheet HTML 7Page - Fairchild Semiconductor UC3842 Datasheet HTML 8Page - Fairchild Semiconductor UC3842 Datasheet HTML 9Page - Fairchild Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 12 page
background image
UC3842/UC3843/UC3844/UC3845
4
Electrical Characteristics (Continued)
(VCC=15V, RT=10k
Ω, CT=3.3nF, TA= 0°C to +70°C, unless otherwise specified)
Adjust VCC above the start threshould before setting at 15V
Note:
1. Parameter measured at trip point of latch
2. Gain defined as:
3. These parameters, although guaranteed, are not 100 tested in production.
Figure 1. Open Loop Test Circuit
High peak currents associated with capacitive loads necessitate careful grounding techniques Timing and bypass capacitors
should be connected close to pin 5 in a single point ground. The transistor and 5k
Ω potentiometer are used to sample the
oscillator waveform and apply an adjustable ramp to pin 3.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
PWM SECTION
Max. Duty Cycle
D(Max)
UC3842/UC3843
95
97
100
%
D(Max)
UC3844/UC3845
47
48
50
%
Min. Duty Cycle
D(MIN)
-
--
0
%
TOTAL STANDBY CURRENT
Start-Up Current
IST
-
-0.45
1
mA
Operating Supply Current
ICC(OPR)
Vpin3=Vpin2=ON
-
14
17
mA
Zener Voltage
VZ
ICC = 25mA
30
38
-
V
A
∆V
pin1
∆V
pin3
------------------
=
UC3842
,0
≤ Vpin3 ≤ 0.8V


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12 


Datasheet Download

Go To PDF Page

Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
KA3846SMPS Controller 1 2 3 4 5 MoreFairchild Semiconductor
KA3882SMPS CONTROLLER 1 2 3 4 5 Fairchild Semiconductor
ICE2A0565Off-Line SMPS Current Mode Controller with integrated 650V/ 800V CoolMOS 1 2 3 4 5 MoreInfineon Technologies AG
KA7500BSMPS Controller 1 2 3 4 5 MoreFairchild Semiconductor
ICE3A0365Off-Line SMPS Current Mode Controller with integrated 650V Startup Cell/CoolMOS 1 2 3 4 5 MoreInfineon Technologies AG
KA7500CSMPS Controller 1 2 3 4 5 MoreFairchild Semiconductor
KA7515SMPS Controller 1 2 3 4 5 MoreFairchild Semiconductor
TL494SMPS Controller 1 2 3 4 5 MoreFairchild Semiconductor
UC3525ASMPS Controller 1 2 3 4 5 MoreFairchild Semiconductor

Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
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