PJ3842B(2002) Просмотр технического описания (PDF) - Promax Johnton
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PJ3842B Datasheet PDF : 15 Pages
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PJ3842B
High Performance Current Mode Controller
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
ERROR AMPLIFIER SECTION
Voltage Feedback Input (Vo=2.5V)
VFB
2.42
2.5
2.58
Input Bias Current (VFB=5.0V)
IIB
-
-0.1
-2.0
Open-Loop Voltage Gain (Vo=2.0V to 4.0V)
Unity Gain Bandwidth (TJ=25℃)
AVOL
65
90
-
BW
0.7
1.0
-
Power Supply Rejection Radio (VCC=12V to 25V)
PSRR
60
70
-
Output Current
Sink (Vo=1.1V, VFB =2.7V)
Source ( Vo=5.0V, VFB =2.3V)
Isink
2.0
12
-
ISource
-0.5
-1.0
-
Output Voltage Swing
High State (RL=15K to ground, VFB=2.3V)
Low State (RL=15K to Vref, VFB=2.7V)
CURRENT SENSE SECTION
VOH
5.0
6.2
-
VOL
-
0.8
1.1
Current Sense Input Voltage Gain (Note 4&5)
Av
2.85
3.0
3.15
Maximum Current Sense Input Threshold(Note 4)
Vth
0.9
1.0
1.1
Power Supply Rejection Radio
PSRR
-
70
-
VCC=12V to 25V,Note 4
Input Bias Current
IIB
-
-2.0
-10
Propagation Delay(Current Sense Input to Output)
tPLH(IN/OUT)
-
150
300
OUTPUT SECTION
Output Voltage
Low State (Isink=20mA)
(Isink=200mA)
VOL
-
0.1
0.4
-
1.6
2.2
High State (Isource=20mA)
(Isource=200mA)
VOH
13
13.5
-
12
13.4
-
Output Voltage with UVLO Activated
VOL(UVLO)
-
VCC=6.0V,Isink=1.0mA
Output Voltage Rise Time (CL=1.0nF,TJ=25℃)
tr
-
Output Voltage Fall Time (CL=1.0nF,TJ=25℃)
tf
-
0.1
1.1
50
150
50
150
UNDERVOLTAGE LOCKOUT SECTION
Start-Up Threshold
Vth
PJ3842B
14.5
16
17.5
Minimum Operating Voltage After Turn-On
PJ3842B
VCC(min)
8.5
10
11.5
PWM SECTION
Duty Cycle
Maximum
Minimum
TOTAL DEVICE
DCmax
94
96
-
DCmin
-
-
0
Power Supply Current
Start-Up, VCC= 14V
Operating (Note 2)
ICC
-
0.25
0.5
-
12
17
Power Supply Zener Voltage (ICC=25mA)
Vz
30
36
-
Unit
V
μΑ
dB
MHz
dB
mA
V
V/V
V
dB
μΑ
ns
V
V
ns
ns
V
V
%
mA
V
3-15
2002/01.ver.A
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