Surface mount type package (equivalent to SC-63, 5-terminal
type)
6.6MAX
5.2±0.5
3
q
Variable output voltage (V
ref
to 35V/–V
ref
to –30V)
q
Built-in ON/OFF control function
q
Built-in overheat protection function and overcurrent
9.7MAX
2.3±0.5
(0.5)
5.5±0.5
protection function
q
Built-in soft start function
1CZ1
(1.7)
2.5MIN
s
q
q
Applications
0.5
+0.2
–0.1
4–(1.27)
(0.9)
Personal computers
Word processors
q
Printers
q
Car audio equipment
(0.5)
( ):Typical values
1
2
3
4
5
1
2
3
4
5
V
IN
V
OUT
COM(equivalent to heat sink)
O
ADJ
V
C
s
❇1
Absolute Maximum Ratings
(T
a
=25˚C)
Parameter
Symbol
Rating
Unit
V
IN
Input voltage
40
V
V
ADJ
Error input voltage
7
V
V
i
-
O
Input-output voltage
41
V
I
SW
Switching current
1.5
A
❇2
Voltage between output and COM
V
OUT
–1
V
❇3
ON/OFF control voltage
V
C
–0.3 to 40
V
❇4
Power dissipation
P
D
8
W
T
j
Junction temperature
150
˚C
T
opr
Operating temperature
–20 to +80
˚C
T
stg
Storage temperature
–40 to +150
˚C
T
sol
Soldering temperature
260(For 10s) ˚C
❇1
❇2
❇3
❇4
Voltage between V
IN
terminal and COM terminal.
Voltage between V
OUT
terminal and COM terminal.
Voltage between Vc terminal and COM terminal.
With infinite heat sink, Refer to Fig.1
• Please refer to the chapter " Handling Precautions ".
In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
devices shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
Internet Internet address for Electronic Components Group http://sharp-world.com/ecg/
Notice
Chopper Regulators
PQ1CZ1
(Unless otherwise specified, condition shall be V
IN
=12V, Io=0.2A, Vo=5V,
5
terminal is open, T
a
=25˚C)
Symbol
V
SAT
V
ref
∆V
ref
|R
eg
L|
|R
eg
I|
η
fo
∆fo
D
MAX
I
L
I
CHG
V
THL
V
THH
V
TH(ON)
I
SD
I
qs
Conditions
Io=1A, no L,D,C
O
––
T
j
=0 to 125˚C
I
O
=0.2 to 1A
V
IN
=8 to 35V
I
O
=1A
––
T
j
=0 to 125˚C
4
terminal = open
No L,D,C
O
2
,
4
terminals are open
Duty=0%,
4
terminal =OV,
5
terminal
Duty=D
MAX
,
4
terminal is open.,
5
terminal
4
terminal=0V,
5
terminal
V
IN
=40V,
5
terminal =0V
V
IN
=40V,
4
terminal =3V
MIN.
––
1.235
––
––
––
––
80
––
90
1.55
–15
1.95
3.25
1.05
––
––
TYP.
0.9
1.26
±
0.5
0.1
0.5
82
100
±
2
––
2
–10
2.25
3.55
1.4
150
8
MAX.
1.5
1.285
––
1.5
2.5
––
120
––
––
2.6
–5
2.55
3.85
1.75
400
12
Unit
V
V
%
%
%
%
kHz
%
%
A
µA
V
V
µA
mA
s
Electrical Characteristics
Parameter
Output saturation voltage
Reference voltage
Reference voltage temperature fluctuation
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 dissipation current
Fig. 1 Test Circuit
4
I
SD
I
qs
1
2
5
L
210µH
I
O
V
O
A
+
3
D
R
2
R
1
+
Road
V
IN
C
IN
100µF
A
I
CHG
C
O
1kΩ
2.2
n
F
470µF
R
2
Output voltage [V
O
]=V
ref
×
1+
––
V
R
1
L : HK-HK-14D100-2110(made by Toho Co.)
D : ERC80-004(made by Fuji electronics Co.)
Fig. 2
10
Power dissipation P
D
(W)
Power Dissipation vs. Ambient
Temperature
P
D
: With infinite heat sink
Fig. 3 Overcurrent Protection
Characteristics (Typical Value)
7
T
j
=25˚C
V
IN
=12V
Vo=5V
C
IN
=100µF
Co=470µF
L=210µH
P
D
6
Output voltage Vo (V)
5
4
3
2
1
5
0
–20
Note)
0
0
20
40
60
80 100
Ambient temperature T
a
(˚C)
0
0.5
1 1.5 2 2.5 3
Output current Io (A)
3.5
4
Oblique line portion : Overheat protection may operate in this area.
Chopper Regulators
Fig. 4
100
T
j
=25˚C
90
Efficiency
η
(%)
PQ1CZ1
Fig. 5
Switching Current vs. Output
Saturation Voltage
T
j
=25˚C
Efficiency vs. Input Voltage
V
O
=12V, I
O
=1.0A
Switching current I
SW
(A)
2.0
1.5
1.0
0.5
0
80
V
O
=12V, I
O
=0.2A
70
60
50
0
10
20
30
Input voltage V
IN
(V)
40
V
O
=5V, I
O
=1.0A
V
O
=5V, I
O
=0.2A
0
0.5
1.0
1.5
Output saturation voltage V
SAT
(V)
Fig. 6
Stand-by Current vs. Input Voltage
T
j
=25˚C
Fig. 7
2
Reference Voltage Fluctuation vs.
Junction Temperature
V
IN
=12V
Vo=5V
Stand-by current I
SD
(µA)
200
150
100
50
0
0
5
10
15 20 25 30 35
Input voltage V
IN
(V)
40
Reference voltage fluctuation
∆V
REF
(%)
1
0
–1
–2
–25
0
25
50
75
100 125
Junction temperature T
j
(˚C)
Fig. 8
1
Load regulation R
eg
L (%)
Load Regulation vs. Output Current
T
j
=25˚C
V
IN
=12V
Vo=5V
C
IN
=100µF
C
O
=470µF
L=210µH
Fig. 9
1
Line Regulation vs. Input Voltage
T
j
=25˚C, Io=0.2A
Vo=5V, C
IN
=100µF
C
O
=470µF, L=210µH
0.5
Line regulation R
eg
I (%)
0.5
0
0
–0.5
0
0.2
0.4
0.6
0.8
Output current I
O
(A)
1
–0.5
0
5
10 15 20 25 30
Input voltage V
IN
(V)
35
40
Chopper Regulators
Fig.10 Oscillation Frequency Fluctuation vs.
Junction Temperature
5
Oscillation frequency fluctuation (%)
PQ1CZ1
Fig.11 Overcurrent Detecting Level
Fluctuation vs. Junction Temperature
Overcurrent detecting level fluctation (%)
15
10
5
0
–5
–10
–15
–25
4
3
2
1
0
–1
–2
–3
–4
–5
–25
V
IN
=12V
Vo=5V
0
25
50
75
100 125
Junction temperature T
j
(˚C)
0
25
50
75
100
Junction temperature T
j
(˚C)
125
Fig.12 Threshold Voltage vs. Junction
Temperature
Threshold voltage V
TH(ON),
V
THL,
V
THH
(V)
4.5
4
3.5
3
2.5
2
1.5
1
0.5
–50 –25 0
25 50 75 100 125
Junction temperature T
j
(˚C)
V
TH(ON)
V
THL
V
THH
V
IN
=12V
Fig.13 Operating Dissipation Current vs.
Input Voltage
10
Operating dissipation current I
Q
' (mA)
9
8
7
Io=0.2A
Io=1A
T
j
=25˚C
Vo=5V
No load
6
5
0
10
20
30
Input voltage V
IN
(V)
40
Fig.14 Power Dissipation vs. Ambient
Temperature (Typical Value)
3
Power dissipation P
D
(W)
Cu area 740mm
2
2
PWB
Cu area 180mm
1
2
2
PWB
Cu
Cu area 100mm
Cu area 70mm
2
Cu area 36mm
2
Material
: Glass-cloth epoxy resin
Size
: 50 X 50 X 1.6mm
Cu thickness : 35µm
0
–20
0
20
40
60
80 100
Ambient temperature T
a
(˚C)
Chopper Regulators
PQ1CZ1
s
Block Diagram
1
V
IN
2
V
OUT
Voltage
regulator
ON/OFF
circuit
5
+
PWM COMP
ON/OFF
Over current
detecting
circuit
Q
R
S
Oscillation
F/F
––
Soft start
–
–
+
4
O
ADJ
ERROR AMP.
Over current
detecting
circuit
3
V
ref
COM
s
Step Down Type Circuit Diagram (5V output)
4
1
2
L 210
µH
V
O
=5V
PQ1CZ1
5
R
S
C
IN
100µF
3
D
R
1
1kΩ
C
O
470µF
C
S
R
S
<=50kΩ
ON/OFF control signal
s
Polarity Inversion Type Circuit Diagram (–5V output)
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