PQ1CF2 View Datasheet(PDF) - Sharp Electronics
Part Name
Description
Manufacturer
PQ1CF2 Datasheet PDF : 3 Pages
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Chopper Regulators
PQ1CF2
s Electrical Characteristics
Parameter
Output saturation voltage
Reference voltage
Temperature fluctuation in reference voltage
Load regulation
Line regulation
Efficiency
Oscillation frequency
Oscillation frequency temperature fluctuation
Maximum duty
Overcurrent detecting level
Charge current
Input threshold voltage
On threshold voltage
Stand-by current
Output OFF-state consump-tion current
(Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A, VO=3V[R1=2kΩ]Ta=25˚C)
Symbol
Conditions
MIN. TYP. MAX. Unit
Vsat
IO=1A,No L,D,CO
-
0.9
1.5
V
Vref
-
1.235 1.26 1.285
V
∆Vref Tj=0 to 125˚C
-
±0.5
-
%
|RegL| IO=0.2 to 1A
-
0.1
1.5
%
|RegI| VIN=8 to 35V
-
0.5
2.5
%
η
IO=1A
-
82
-
%
fo
-
80
100
120
kHz
∆fo Tj=0 to 125˚C
-
±2
-
%
DMAX 4 terminal is open
90
-
-
%
IL
No L,D,CO
1.55
2.0
2.6
A
ICHG 24 terminal is open
-15
-10
-5
µA
VTHL Duty=0%, 4terminal=0V, 5terminal 1.95
2.25
2.55
V
VTHH Duty=DMAX, 4terminal is open. 5terminal 3.25
3.55
3.85
V
VTHON 4terminal=0V,5terminal
1.05
1.4
1.75
V
ISD
VIN=40V, 4terminal=0V
-
150
400
µA
Iqs
VIN=40V, 5terminal=3V
-
8
12
mA
s Block Diagram
1 VIN
2 VOUT
Overcurrent
detection
circuit
Voltage
regulator
ON/OFF
circuit
PWM COMP.
+
-
Q
F/F R
S
Overheat
detection
circuit
3 COM
Fig.1 Test Circuit
↓
+
-
Vref
ISD
IQS A
VIN
4q
1q
2q
L
210µH
2.2nF
IO VO
PQ1CF2
+
5q
3q
CIN
100µF
A
ICHG
R2
D R1
1kΩ
+
CO
470µF
L : HK-14D100-2110 (made by Toho Co.)
D : ERC80-004 (made by Fuji electronics Co.)
5 ON/OFF
4 OADJ
Fig.2 Power Dissipation vs. Ambient
Temperature
20
PD1 :No heat sink
PD2 :With infinite heat sink
PD2
15
,, 10
,, 5
,, PD1
0
,, -20 0 20 40 60 80 100
Ambient temperature Ta (˚C)
Note) Oblique line portion : Overheat
protection may operate in this area.
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