PQ1PF2 查看數據表（PDF） - Sharp Electronics
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PQ1PF2 Datasheet PDF : 2 Pages
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Primary Regulators
PQ1PF2
s Electrical Characteristics (Unless otherwise specified,conditions shall be VDS=10V,VCC=18V,VCA=OPEN,VFB=2.2V,RL=56Ω, Ta=25˚C)
Parameter
Drain-source onstate resistance
Drain-source leakage current
Oscillation frequency
Temperature change in oscillation frequency
Maximum duty
FB threshold voltage
FB current
CA threshold voltage
CA sink current
Overcurrent detecting level
Operation starting voltage
Operation stopping voltage
Stand-by current
Output OFF-mode consumpion current
Output-operating mode consumption current
Charging current
Symbol
RDS (ON)
IDSS
fo
∆fo
DMAX
VFBL
VFBH
VFB (OCP)
IFB
VCAL
VCAH
VCA (ON/OFF)
VCA (OVP)
ICAIN
ID (OCP)
VCC (ON)
VCC (OFF)
ICC (ST)
ICC (OFF)
ICC (OP)
ICA (CHG)
Conditions
ID=1.3A
VDS=500V,VCC=7V
VCA=GND,VFB=GND
Tj=0 to 125˚C
Duty=0%
Duty=DMAX
VCA=6V
VFB=GND
Duty=0%
Duty=DMAX
VFB=1V,VCA=6V
VDS=OPEN,VFB=OPEN
VDS=OPEN,VFB=OPEN
VDS=OPEN,VCC=14V,
VFB=OPEN
VDS=OPEN,VCA=GND
VFB=OPEN
VCA=GND,VFB=OPEN
MIN. TYP. MAX. Unit
-
2.2
3.0
Ω
-
-
250
µA
90
100
110
kHz
-
±5
-
%
42
45
50
%
-
0.9
-
V
-
1.8
-
V
2.6
2.8
3.1
V
-800 -620 -440
µA
-
0.9
-
V
-
1.8
-
V
0.49
0.6
0.74
V
7.2
7.7
8.2
V
20
36
52
µA
-
1.8
-
A
15.5
17.0
18.5
V
8.5
9.3
10.1
V
-
100
150
µA
-
0.6
1.8
mA
-
10
18
mA
-15
-10
-5
µA
Fig.1 Test Circuit
A
VCC
CIN
100µF
+
0.01µF 5q
1q
PQ1PF2
4q
3q
2q
A
VFB
R2
A
VCA
s Block Diagram
g
CA
VCC
3
5
FB 4
Overheat
detection
circuit
Overload
cut-off voltage
detecting circuit
←
Low voltage
malfunction
prevention circuit
Cut-off voltage
detecting circuit
OFF voltage
detecting circuit
OSC
RQ
S
PWM
+
-
-
-
DET
RL
A
VDS
VDS
1
Constant
voltage
source
Fig. 2 Power Dissipation vs. Ambient
Temperature
25
PD1 :No heat sink
PD2 :With infinite heat sink
20
PD2
,,, 15
,,, 10
5
,,, PD1
0
,,, -20 0
20 40 60 80
Ambient temperature Ta (˚C)
Note) Oblique line portion:Overheat protection may
operate in this area.
Drive
circuit
Overcurrent
detecting
circuit
2
GND
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