Chopper Regulators
PQ1CG2032FZ/PQ1CG2032RZ
Electrical Characteristics
ꢀ
(Unless otherwise specified, condition shall be VIN=12V, I
O
=0.2A, V
O
=5V, ON-OFF terminals is open, Ta=25˚C)
Parameter
Output saturation voltage
Reference voltage
Symbol
Conditions
MIN. TYP. MAX. Unit
I
SW=3A
VSAT
−
1.235
−
1.4
1.26
±0.5
0.2
0.5
80
1.8
1.285
−
V
V
Vref
−
Reference voltage temperature fluctuation
Load regulation
∆Vref
|RegL|
|RegI|
η
T=0 to 125˚C
j
%
I
O=0.5 to 3A
−
1.5
2.5
−
%
Line regulation
V
IN=8 to 35V
−
%
Efficiency
I
O=3A
−
%
Oscillation frequency
Oscillation frequency temperature fluctuation
Overcurrent detecting level
Charge current
f
O
−
80
−
60
−
70
kHz
T=0 to 125˚C
j
∆f
O
±2
%
A
−
I
L
3.6
−
4.2
−10
1.3
2.3
0.8
140
8
5.8
−
2
4
5
terminals is open, terminal
,
I
CHG
µA
V
4
5
Duty ratio=0%, terminal=0V, terminal
−
−
V
THL
THH
Input threshold voltage
4
5
Duty ratio=100%, terminals is open, terminal
−
−
V
V
4
5
terminal=0V, terminal
ON threshold voltage
V
TH(ON)
0.7
−
0.9
400
16
V
5
IN=40V, terminal=0V
V
Stand-by current
I
I
SD
QS
µA
mA
5
V
IN=40V, terminal=0.9V
Output OFF-state dissipation current
−
Fig.1 Test Circuit
4
L
IO
90µH
1
2
5
VO
PQ1CG2032
ISD
IQS
A
R2
+
+
Load
3
VIN
A
D
CO
1 000µF
CIN
ICHG
220µF
R1
1kΩ
L : HK-12S120-9000 (made by Toho Co.)
D :ERC80-004 (made by Fuji electronics Co.)
Fig.2 Power Dissipation vs. Ambient
Fig.3 Overcurrent Protection
Temperature
Characteristics (Typical Value)
6
20
5
4
3
15
10
PD2 : With infinite heat sink
2
5
0
Ta=25°C
VIN=12V
VO=5V
1
0
PD1 : No heat sink
−20
0
20
Ambient temperature Ta (°C)
Note) Oblique line portion:Overheat protection may operate in this area
40
60
80
100
0
1
2
3
4
5
Output current IO (A)
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
