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参数资料
| 型号： | PJ3842BCS |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | PLASTIC, SOP-8 |
| 文件页数： | 8/15页 |
| 文件大小： | 887K |
| 代理商： | PJ3842BCS |
PJ3842B / PJ3843B
High Performance Current Mode Controller
2-15
2002.ver.A
Rating
Symbol
Value
Unit
Total Power Supply and Zener Current
(ICC+IZ)
30
mA
Output Current Source or Sink (Note 1)
Io
1.0
A
Output Energy (Capacitive Load per Cycle)
W
5.0
μ
J
Current Sense and Voltage Feedback Inputs
Vin
-0.3 to +5.5
V
Error Amp Output Sink Current
Io
10
mA
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
PD
RθJA
PD
RθJA
862
145
1.25
100
mW
℃
/W
W
℃
/W
Operating Junction Temperature
TJ
0 to +150
℃
Operating Ambient Temperature
TA
-20 to +85
℃
Storage Temperature Range
Tstg
-25 to +150
℃
PJ3842B / PJ3843B
Characteristic
Symbol
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (Io=1.0mA,TJ = 25℃)
Vref
4.9
5.0
5.1
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
-
50
-
V
Long Term Stability ( TA=125.℃ for 1000 Hours)
S
-
5.0
-
mV
Output Short Circuit Current
Isc
-30
-85
180
mA
OSCILLATOR SECTION
Frequency
TJ=25℃
TA=Tlow to Thigh
Fosc
47
46
52
-
57
60
KHz
Frequency Change with Voltage (VCC =12V to 25V)
Δ
fosc/ΔV
-
0.2
1.0
%
Frequency Change with Temperature
TA=Tlow to Thigh
Δ
fosc/ΔT
-
5.0
-
%
Oscillator Voltage Swing ( Peak-to-Peak)
Vosc
-
1.6
-
V
Discharge Current (Vosc=2.0V)
TJ=25℃
TA=Tlow to Thigh
Idischg
7.5
7.2
8.4
-
9.3
9.5
mA
Note: 1. Maximum Package power dissipation limits must be observed.
2. Adjust VCC above the Start-Up threshold before 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℃
Thigh = +85℃
4. This parameter is measured at the latch trip point with VFB = 0V.
Δ
V Output Compensation
5. Comparator gain is defined as : Av =
Δ
V Current Sense Input
MAXIMUM RATING
ELECTRICAL CHARACTERISTICS (VCC = 15V (Note 2), RT =10K, CT=3.3nF, TA=Tlow to Thigh(Note 3) unless otherwise
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