Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

UC3844T Datasheet(PDF) 3 Page - STMicroelectronics

Part No. UC3844T
Description  HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
Download  15 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UC3844T Datasheet(HTML) 3 Page - STMicroelectronics

  UC3844T Datasheet HTML 1Page - STMicroelectronics UC3844T Datasheet HTML 2Page - STMicroelectronics UC3844T Datasheet HTML 3Page - STMicroelectronics UC3844T Datasheet HTML 4Page - STMicroelectronics UC3844T Datasheet HTML 5Page - STMicroelectronics UC3844T Datasheet HTML 6Page - STMicroelectronics UC3844T Datasheet HTML 7Page - STMicroelectronics UC3844T Datasheet HTML 8Page - STMicroelectronics UC3844T Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 15 page
background image
ELECTRICAL CHARACTERISTICS ( [note 1] Unless otherwise stated, these specifications apply for
0 < Tamb < 105°C; Vi = 15V (note 5); RT = 10K; CT = 3.3nF)
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
REFERENCE SECTION
∆VREF
Line Regulation
12V
≤ Vi ≤ 25V
220
mV
∆VREF
Load Regulation
1
≤ Io ≤ 20mA
325
mV
∆VREF/∆T Temperature Stability
(Note 2)
0.2
mV/
°C
Total Output Variation
Line, Load, Temperature
4.85
5.15
V
eN
Output Noise Voltage
10Hz
≤ f ≤ 10KHz Tj = 25°C
(note 2)
50
µV
Long Term Stability
Tamb = 125
°C, 1000Hrs (note 2)
525
mV
ISC
Output Short Circuit
-30
-100
-180
mA
OSCILLATOR SECTION
fOSC
Frequency
Tj = 25
°C
TA = Tlow to Thigh
TJ = 25°C (RT = 6.2k, CT = 1nF)
49
48
225
52
250
55
56
275
KHz
KHz
KHz
∆fOSC/∆V Frequency Change with Volt.
VCC = 12V to 25V
0.2
1
%
∆fOSC/∆T Frequency Change with Temp.
TA = Tlow to Thigh
–1
%
VOSC
Oscillator Voltage Swing
(peak to peak)
1.6
V
Idischg
Discharge Current (VOSC =2V)
TA = Tlow to Thigh
7.3–8.8
mA
ERROR AMP SECTION
V2
Input Voltage
VPIN1 = 2.5V
2.42
2.50
2.58
V
Ib
Input Bias Current
VFB = 5V
-0.1
-2
µA
AVOL
2V
≤ Vo ≤ 4V
65
90
dB
BW
Unity Gain Bandwidth
TJ = 25°C
0.7
1
MHz
PSRR
Power Supply Rejec. Ratio
12V
≤ Vi ≤ 25V
60
70
dB
Io
Output Sink Current
VPIN2 = 2.7V
VPIN1 = 1.1V
2
12
mA
Io
Output Source Current
VPIN2 = 2.3V VPIN1 = 5V
-0.5
-1
mA
VOUT High
VPIN2 = 2.3V;
RL = 15K
Ω to Ground
5
6.2
V
VOUT Low
VPIN2 = 2.7V;
RL = 15K
Ω to Pin 8
0.8
1.1
V
CURRENT SENSE SECTION
GV
Gain
(note 3 & 4)
2.85
3
3.15
V/V
V3
Maximum Input Signal
VPIN1 = 5V (note 3)
0.9
1
1.1
V
SVR
Supply Voltage Rejection
12
≤ Vi ≤ 25V (note 3)
70
dB
Ib
Input Bias Current
-2
-10
µA
Delay to Output
100
300
ns
THERMAL DATA
Symbol
Description
Minidip
SO8
Unit
Rth j-amb
Thermal Resistance Junction-ambient.
max.
100
150
°C/W
U3842T - UC3843T - UC3844T - UC3845T
3/15


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15 


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   |   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