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

X  

UC2844BN Fiches technique(PDF) 4 Page - ON Semiconductor

No de pièce UC2844BN
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

UC2844BN Fiches technique(HTML) 4 Page - ON Semiconductor

  UC2844BN Datasheet HTML 1Page - ON Semiconductor UC2844BN Datasheet HTML 2Page - ON Semiconductor UC2844BN Datasheet HTML 3Page - ON Semiconductor UC2844BN Datasheet HTML 4Page - ON Semiconductor UC2844BN Datasheet HTML 5Page - ON Semiconductor UC2844BN Datasheet HTML 6Page - ON Semiconductor UC2844BN Datasheet HTML 7Page - ON Semiconductor UC2844BN Datasheet HTML 8Page - ON Semiconductor UC2844BN Datasheet HTML 9Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 20 page
background image
UC3844B, UC3845B, UC2844B, UC2845B
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 4], RT = 10 k, CT = 3.3 nF. For typical values TA = 25°C, for min/max values
TA is the operating ambient temperature range that applies [Note 5], unless otherwise noted.)
UC284XB
UC384XB, XBV
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
ERROR AMPLIFIER SECTION
Voltage Feedback Input (VO = 2.5 V)
VFB
2.45
2.5
2.55
2.42
2.5
2.58
V
Input Bias Current (VFB = 5.0 V)
IIB
− 0.1
−1.0
− 0.1
− 2.0
mA
Open Loop Voltage Gain (VO = 2.0 V to 4.0 V)
AVOL
65
90
65
90
dB
Unity Gain Bandwidth (TJ = 25°C)
BW
0.7
1.0
0.7
1.0
MHz
Power Supply Rejection Ratio (VCC = 12 V to 25 V)
PSRR
60
70
60
70
dB
Output Current
Sink (VO = 1.1 V, VFB = 2.7 V)
Source (VO = 5.0 V, VFB = 2.3 V)
ISink
ISource
2.0
− 0.5
12
−1.0
2.0
− 0.5
12
−1.0
mA
Output Voltage Swing
High State (RL = 15 k to ground, VFB = 2.3 V)
Low State (RL = 15 k to Vref, VFB = 2.7 V)
(UC284XB, UC384XB)
(UC384XBV)
VOH
VOL
5.0
6.2
0.8
1.1
5.0
6.2
0.8
0.8
1.1
1.2
V
CURRENT SENSE SECTION
Current Sense Input Voltage Gain (Notes 6 & 7)
(UC284XB, UC384XB)
(UC384XBV)
AV
2.85
3.0
3.15
2.85
2.85
3.0
3.0
3.15
3.25
V/V
Maximum Current Sense Input Threshold (Note 6)
(UC284XB, UC384XB)
(UC384XBV)
Vth
0.9
1.0
1.1
0.9
0.85
1.0
1.0
1.1
1.1
V
Power Supply Rejection Ratio
(VCC = 12 V to 25 V) (Note 6)
PSRR
70
70
dB
Input Bias Current
IIB
− 2.0
−10
− 2.0
−10
mA
Propagation Delay (Current Sense Input to Output)
tPLH(In/Out)
150
300
150
300
ns
OUTPUT SECTION
Output Voltage
Low State
(ISink = 20 mA)
(ISink = 200 mA, UC284XB, UC384XB)
(ISink = 200 mA, UC384XBV)
High State (ISource = 20 mA, UC284XB, UC384XB)
(ISource = 20 mA, UC384XBV)
(ISource = 200 mA)
VOL
VOH
13
12
0.1
1.6
13.5
13.4
0.4
2.2
13
12.9
12
0.1
1.6
1.6
13.5
13.4
0.4
2.2
2.3
V
Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 1.0 mA)
VOL(UVLO)
0.1
1.1
0.1
1.1
V
Output Voltage Rise Time (CL = 1.0 nF, TJ = 25°C)
tr
50
150
50
150
ns
Output Voltage Fall Time (CL = 1.0 nF, TJ = 25°C)
tf
50
150
50
150
ns
UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold
UCX844B, BV
UCX845B, BV
Vth
15
7.8
16
8.4
17
9.0
14.5
7.8
16
8.4
17.5
9.0
V
Minimum Operating Voltage After Turn−On
UCX844B, BV
UCX845B, BV
VCC(min)
9.0
7.0
10
7.6
11
8.2
8.5
7.0
10
7.6
11.5
8.2
V
4. Adjust VCC above the Startup threshold before setting to 15 V.
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
Tlow =0°C for UC3844B, UC3845B
Thigh =+ 70°C for UC3844B, UC3845B
=− 25
°C for UC2844B, UC2845B
= + 85
°C for UC2844B, UC2845B
=− 40
°C for UC3844BV, UC3845BV
= +105
°C for UC3844BV, UC3845BV
6. This parameter is measured at the latch trip point with VFB = 0 V.
7. Comparator gain is defined as: AV = DV Output/Compensation
DV Current Sense Input


Numéro de pièce similaire - UC2844BN

FabricantNo de pièceFiches techniqueDescription
logo
STMicroelectronics
UC2844BN STMICROELECTRONICS-UC2844BN Datasheet
135Kb / 15P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC2844BN STMICROELECTRONICS-UC2844BN Datasheet
135Kb / 15P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC2844BN STMICROELECTRONICS-UC2844BN Datasheet
239Kb / 15P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
logo
ON Semiconductor
UC2844BNG ONSEMI-UC2844BNG Datasheet
399Kb / 19P
   High Performance Current Mode Controllers
August, 2013 ??Rev. 11
More results

Description similaire - UC2844BN

FabricantNo de pièceFiches techniqueDescription
logo
Motorola, Inc
UC3842B MOTOROLA-UC3842B Datasheet
401Kb / 16P
   HIGH PERFORMANCE CURRENT MODE CONTROLLERS
logo
Freescale Semiconductor...
MC34129EF FREESCALE-MC34129EF Datasheet
444Kb / 16P
   high performance current mode controllers
logo
ON Semiconductor
UC3844BNG ONSEMI-UC3844BNG Datasheet
399Kb / 19P
   High Performance Current Mode Controllers
August, 2013 ??Rev. 11
UC3845BDR2G ONSEMI-UC3845BDR2G Datasheet
387Kb / 19P
   High Performance Current Mode Controllers
December, 2012 ??Rev. 11
UC3845BVDG ONSEMI-UC3845BVDG Datasheet
399Kb / 19P
   High Performance Current Mode Controllers
August, 2013 ??Rev. 11
UC3845BVDR2G ONSEMI-UC3845BVDR2G Datasheet
399Kb / 19P
   High Performance Current Mode Controllers
August, 2013 ??Rev. 11
UC3844BVDG ONSEMI-UC3844BVDG Datasheet
399Kb / 19P
   High Performance Current Mode Controllers
August, 2013 ??Rev. 11
logo
Unisonic Technologies
UC3842B UTC-UC3842B_08 Datasheet
518Kb / 11P
   HIGH PERFORMANCE CURRENT MODE CONTROLLERS
logo
Motorola, Inc
UC3844 MOTOROLA-UC3844 Datasheet
376Kb / 14P
   HIGH PERFORMANCE CURRENT MODE CONTROLLERS
logo
ON Semiconductor
UC3842A ONSEMI-UC3842A Datasheet
399Kb / 14P
   HIGH PERFORMANCE CURRENT MODE CONTROLLERS
1996 REV 1
UC3844 ONSEMI-UC3844 Datasheet
376Kb / 14P
   HIGH PERFORMANCE CURRENT MODE CONTROLLERS
1996 REV 1
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


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