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PDF CM3843 Data sheet ( Hoja de datos )
| Número de pieza | CM3843 | |
| Descripción | CURRENT MODE PWM CONTROLLER | |
| Fabricantes | ETC | |
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CM3842/3843
CURRENT MODE PWM CONTROLLER
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Input Voltage
Output Voltage
Supply Current
Average Output Current
Reference Output Current
Timing Capacitor
Oscillator Frequency
Operating Free-air Temperature
Symbol
VCC / VC
VI,RT/CT
VI,ISENSE/VFB
VO, Output
ICC
IO
IO(REF)
CT
fOSC
TA
Recommended Operating
Min.
Typ.
Max.
30
0 5.5
0 30
25
200
-20
1
100 500
0 70
Units
V
V
V
mA
mA
mA
nF
KHz
OC
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperature for CM384X with 0OC ≤
TA ≤70 OC; VCC = 15V(note 7); RT = 10K;CT = 3.3nF. Low duty cycle pulse testing techniques are used which
maintains junction and case temperatures equal to the ambient temperature.
Parameter
Symbol
Test Conditions
CM384X
Units
Min. Typ. Max.
Reference Section
Reference output Voltage
Line Regulation
Load Regulation
Short Ciruit Output Current
Oscillator Section
Oscillation Frequency
Frequency Change with Voltage
Frequency Change with Temperature
(note 8)
VREF
ISC
TJ = 25 OC, IREF = 1mA
12V ≤ VCC ≤ 25V,TJ = 25 OC
1mA ≤ IREF ≤ 20mA
TJ = 25 OC
f TJ = 25 OC
12V ≤ VCC ≤ 25V
TMIN ≤ TA ≤ TMAX
Peak-to-peak Amplitude At RT/CT
VOSC
Current Sense Section
Gain (note 9 & 10)
Maximum Input Signal (note 9)
Power Supply Rejection Ratio (note 9)
Input Bias Current
AVOL
VI(MAX)
PSRR
IBIAS
COMP = 5V
12V ≤ VCC ≤ 25V (note 9)
4.9 5.0 5.1
V
6 20 mV
6 25 mV
-30 -100 -180 mA
47 52 57 KHz
0.2 1.0 %
5%
1.7 V
2.85
0.9
3.00
1.0
70
-3.0
3.15
1.1
-10
V/V
V
dB
µA
2001/06/27 Advanced
Champion Microelectronic Corporation
Page 4
5 Page 
CM3842/3843
CURRENT MODE PWM CONTROLLER
8-PIN PLASTIC S.O.I.C. CARRIER DIMENSIONS
D T2
MILLIMETERS
C A 330 ± 1 DD 1.55 ± 0.1
BA
B 100 ± 1 D1
+0.5
C 13.0
Po
-1.0
1.5 ± 0.25
4.0 ± 0.1
D 2.2 ± 1 P1 2.0 ± 0.1
E DD Po
F
D1 P
T1
P1 t
Wc Wt Bo
Ko
Ao
T1 12.5 ± 0.5 Ao
6.4 ± 0.1
T2 2.0 ± 0.2 Bo 5.2 ± 0.1
Wc
12.0
+0.3
-0.1
Ko
2.1 ± 0.1
Wt 9.3 TYP.
t 0.30 ± 0.013
P 8.0 ± 0.1
E 1.75 ± 0.1
F 5.5 ± 0.1
2001/06/27 Advanced
Champion Microelectronic Corporation
Page 10
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet CM3843.PDF ] | |
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