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UC3843AP-D08-T Arkusz danych(PDF) 4 Page - Unisonic Technologies

Numer części UC3843AP-D08-T
Szczegółowy opis  CURRENT MODE PWM CONTROL CIRCUITS
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Producent  UTC [Unisonic Technologies]
Strona internetowa  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

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UC3842A/3843A
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 9
www.unisonic.com.tw
QW-R103-002.G
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)
VPIN1=5V( Note 2)
0.9
1
1.1
V
PSRR
12V≦VCC≦25V
70
dB
Input Bias Current
IBIAS
-2
-10
μA
Delay to Output
VPIN3=0 to 2V
150
300
ns
OUTPUT SECTION
Output Level
Low
VOL
IO(SINK)=20mA
0.1
0.4
V
IO(SINK)=200mA
1.5
2.2
V
High
VOH
IO(SOURCE)=20mA
13
13.5
V
IO(SOURCE)=200mA
12
13.5
V
Rise Time
tR
TJ=25℃,CL=1nF (Note 1)
50
150
ns
Fall Time
tF
TJ=25℃,CL=1nF (Note 1)
50
150
ns
UNDER-VOLTAGE LOCKOUT OUTPUT SECTION
Start Threshold
3842A
VTH(ST)
14.5
16
17.5
V
3843A
7.8
8.4
9
V
Min. Operating Voltage
3842A
VOPR(MIN) After Turn On
8.5
10
11.5
V
3843A
7
7.6
8.2
V
PWM SECTION
Duty Cycle
MAX
D(MAX)
95
97
100
%
MIN
D(MIN)
0
%
TOTAL STANDBY CURRENT
Start-up Current
IST
0.12
0.3
mA
Operating Supply Current
ICC(OPR) VPIN2=VPIN3=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:
4. Adjust VCC above the start threshold before setting at 15V.


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