PJ3842BCS(2002) Просмотр технического описания (PDF) - Promax Johnton
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PJ3842BCS Datasheet PDF : 15 Pages
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PJ3842B
High Performance Current Mode Controller
MAXIMUM RATING
Rating
Total Power Supply and Zener Current
Output Current Source or Sink (Note 1)
Output Energy (Capacitive Load per Cycle)
Current Sense and Voltage Feedback Inputs
Error Amp Output Sink Current
Power Dissipation and Thermal Characteristics
Plastic Dip
Maximum Power Dissipation @ TA=25℃
Thermal Resistance Junction to Air
Plastic Dip
Maximum Power Dissipation @ TA=25℃
Thermal Resistance Junction to Air
Operating Junction Temperature
Operature Ambient Temperature
Storage Temperature Range
Symbol
(ICC+IZ)
Io
W
Vin
Io
PD
RθJA
PD
RθJA
TJ
TA
T stg
Value
30
1.0
5.0
-0.3 to +5.5
10
862
145
1.25
100
+150
0 to +70
-65 to +150
Unit
mA
A
μJ
V
mA
mW
℃/W
W
℃/W
℃
℃
℃
ELECTRICAL CHARACT ERISTICS (VCC = 15V (Note 2), RT =10K, CT=3.3nF, TA=Tlow to Thigh(Note 3) unless otherwise
Characteristic
Symbol
PJ3842B
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (Io=1.0mA,TJ = 25℃)
Vref
5.0
5.0
5.0
V
Line Regulation (VCC =12V to 25V)
Regline
-
2.0
20
mV
Load Regulation (Io =1.0mA to 20mA)
Regload
-
3.0
25
mV
Temperature Stability
Ts
-
0.2
-
mV/℃
Total Output Variation over Line,Load ,and Temperature
Vref
4.82
-
5.18
V
Output Noise Voltage (f = 10Hz to 10kHz, TJ=25℃)
Vn
Long T erm Stability ( T A=125.℃ for 1000 Hours)
S
-
50
-
µV
-
5.0
-
mV
Output Short Circuit Current
Isc
-30
-85
180
mA
OSCILLATOR SECTION
Frequency
Fosc
T J=25℃
47
T A=Tlow to Thigh
46
Frequency Change with Voltage (VCC =12V to 25V)
Δfos c/ΔV
-
Frequency Change with Temperature
Δfos c/ΔT
-
T A=Tlow to Thigh
Oscillator Voltage Swing ( Peak-to-Peak)
Vosc
-
KHz
52
57
-
60
0.2
1.0
%
5.0
-
%
1.6
-
V
Discharge Current (Vosc=2.0V)
Idischg
mA
TJ=25℃
T A=Tlow to Thigh
7.5
8.4
9.3
7.2
-
9.5
Note: 1. Maximum Package power dissipation limits must be observed.
2. Adjust VCC above the Start-Up threshold befo re setting to 15V.
3. Low duty cycle pulse technique are used during test to maintain junction temperature as close to ambient as possible.
Tlow = -20℃
T high = +85℃
4. This parameter is measured at the latch trip point with VFB = 0V.
ΔV Output Compensation
5. Comparator gain is defined as : Av =
ΔV Current Sense Input
2-15
2002/01.ver.A
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