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UC3843A-D08-T 数据表(PDF) 4 Page - Unisonic Technologies

部件名 UC3843A-D08-T
功能描述  CURRENT MODE PWM CONTROL CIRCUITS
Download  9 Pages
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制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
标志 UTC - Unisonic Technologies

UC3843A-D08-T 数据表(HTML) 4 Page - Unisonic Technologies

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UC3842A/3843A
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 9
www.unisonic.com.tw
QW-R103-002,D
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Current Sense section
Gain
GV
(Note 2,3)
2.85
3
3.15
V/V
Maximum Input signal
VI(MAX)
Vpin 1=5V( Note 2)
0.9
1
1.1
V
PSRR
12≦VCC≦25V
70
dB
Input Bias Current
IBIAS
-2
-10
µA
Delay to Output
Vpin 3=0 to 2V
150
300
ns
Output Section
IO(SINK)=20mA
0.1
0.4
V
Low
VOL
IO(SINK)=200mA
1.5
2.2
V
IO(SOURCE)=20mA
13
13.5
V
Output Level
High
VOH
IO(SOURCE)=200mA
12
13.5
V
Rise Time
tR
TJ=25°C,CL=1nF(Note 1)
50
150
ns
Fall Time
tF
TJ=25°C,CL=1nF(Note 1)
50
150
ns
Under-Voltage Lockout Output Section
3842A
14.5
16
17.5
V
Start Threshold
3843A
VTH(ST)
7.8
8.4
9
V
3842A
8.5
10
11.5
V
Min. Operating Voltage
3843A
VOPR(MIN) After Turn On
7
7.6
8.2
V
PWM Section
MAX
D(MAX)
95
97
100
%
Duty Cycle
Min
D(MIN)
0
%
Total Standby Current
Start-up Current
IST
0.12
0.3
mA
Operating Supply Current
ICC(OPR)
Vpin 2=Vpin 3=0V
11
17
mA
VCC Zener Voltage
Vz
ICC=25mA
34
V
Note:1.These parameters, although guaranteed ,are not 100% tested in production.
2. Parameters measured at trip point of latch with Vpin 2=0.
3. Gain defined as:
∆Vpin 1
∆Vpin 3
A=
; 0Vpin30.8V
4. Adjust VCC above the start threshold before setting at 15V.


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