Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

UC2845 Datasheet(PDF) 5 Page - Unisonic Technologies

Part # UC2845
Description  HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
Download  7 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC2845 Datasheet(HTML) 5 Page - Unisonic Technologies

  UC2845_15 Datasheet HTML 1Page - Unisonic Technologies UC2845_15 Datasheet HTML 2Page - Unisonic Technologies UC2845_15 Datasheet HTML 3Page - Unisonic Technologies UC2845_15 Datasheet HTML 4Page - Unisonic Technologies UC2845_15 Datasheet HTML 5Page - Unisonic Technologies UC2845_15 Datasheet HTML 6Page - Unisonic Technologies UC2845_15 Datasheet HTML 7Page - Unisonic Technologies  
Zoom Inzoom in Zoom Outzoom out
 5 / 7 page
background image
UC2844/45
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
5 of 7
www.unisonic.com.tw
QW-R103-051.B
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT SENSE SECTION
Current Sense Input Voltage Gain
GV
(Note 2, 3)
2.85
3.0
3.15
V/V
Maximum Current Sense Input
Threshold
VI(THR)
(Note 2)
0.9
1.0
1.1
V
Input Bias Current
II(BIAS)
-2.0
-10
μA
Power Supply Rejection Ratio
PSRR
VCC=12V ~ 25V (Note4)
70
dB
Propagation Delay
tPLH(IN/OUT)
150
300
ns
OUTPUT SECTION
Output Voltage
Low
VOL
ISINK=20mA
0.1
0.4
V
ISINK=200mA
1.6
2.2
High
VOH
ISINK=20mA
13
13.5
V
ISINK=200mA
12
13.4
Output Voltage with UVLO Activated
VOL(UVLO)VCC=6.0V, ISINK=1.0mA
0.1
1.1
V
Output Voltage Rise Time
tR
CL=1.0nF,TJ=25°С
50
150
ns
Output Voltage Fall Time
tF
CL=1.0nF,TJ=25°С
50
150
ns
UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold
UC2844
VTHR
15
16.0
17
V
UC2845
7.8
8.4
9.0
Minimum Operating
Voltage After Turn-On
UC2844
VCC(MIN)
9.0
10.0
11.0
V
UC2845
7.0
7.6
8.2
PWM SECTION
Duty Cycle
MAX
DCMAX
47
48
50
%
MIN
DCMIN
0
%
TOTAL DEVICE
Power Supply Zener Voltage
VZ
ICC=25mA
30
36
-
V
Power Supply Current
(Note 4)
UC2845
ICC
VCC=6.5V
0.5
1.0
mA
UC2844
VCC=14V
12
17
Note: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient
as possible.
2. This parameter is measured at the latch trip point with VFB=0V.
3. Comparator gain is defined as:
ΔV Output Compensation
AV=
ΔV Current Sense Input
4. Adjust VCC above the startup threshold before setting to 15V.


Similar Part No. - UC2845_15

ManufacturerPart #DatasheetDescription
logo
STMicroelectronics
UC2845A STMICROELECTRONICS-UC2845A Datasheet
167Kb / 16P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC2845A STMICROELECTRONICS-UC2845A Datasheet
129Kb / 15P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
logo
Microsemi Corporation
UC2845A MICROSEMI-UC2845A Datasheet
227Kb / 8P
   CURRENT MODE PWM CONTROLLER
logo
Texas Instruments
UC2845A TI-UC2845A Datasheet
517Kb / 7P
[Old version datasheet]   Current Mode PWM Controller
UC2845A TI-UC2845A Datasheet
591Kb / 15P
[Old version datasheet]   CURRENT-MODE PWM CONTROLLER
More results

Similar Description - UC2845_15

ManufacturerPart #DatasheetDescription
logo
Cystech Electonics Corp...
PL384XBP8 CYSTEKEC-PL384XBP8 Datasheet
278Kb / 15P
   High Performance Current Mode PWM Controllers
logo
Unisonic Technologies
UC2844-45 UTC-UC2844-45 Datasheet
295Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
logo
Gamma Microelectronics ...
GM3842A GAMMA-GM3842A Datasheet
628Kb / 19P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
logo
Unisonic Technologies
UC2844 UTC-UC2844_16 Datasheet
228Kb / 6P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC2844 UTC-UC2844_12 Datasheet
294Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC2843B UTC-UC2843B_15 Datasheet
285Kb / 8P
   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
UC3844 UTC-UC3844 Datasheet
298Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
logo
Cystech Electonics Corp...
PL384XAQ8 CYSTEKEC-PL384XAQ8 Datasheet
281Kb / 15P
   High Performance Current Mode PWM Controllers
logo
Unisonic Technologies
UC2843B UTC-UC2843B_13 Datasheet
285Kb / 8P
   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
UC2843B UTC-UC2843B Datasheet
210Kb / 9P
   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
More results


Html Pages

1 2 3 4 5 6 7


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com