KODENSHI A78R09PIC 1.0a output low dropout regulator Datasheet

A78RxxPIC
LDO Fixed Regulator IC
Description
The A78Rxx Series is a low dropout voltage regulator suitable for various electronic equipments. It provides
constant voltage power source with TO-220F-4SL lead full-mold package. Dropout voltage of A78Rxx Series is
below Max.0.5V in full rated current (1.0A). This regulator has various functions such as current limit protection,
over voltage protection and output on/off control.
Features
Pin Connection
• 1.0A output low dropout regulator
• TO-220F-4SL full-mold package (4pin)
1. INPUT
• Current limit protection
2. OUTPUT
• Over voltage protection
3. GROUND
1
• Thermal shutdown protection
• With output on/off control (At typical 1.5V)
2
3
4. ON/OFF CONTROL
4
• Control pin open or high signal, output on
Ordering Information
Product
Marking
Package
A78RxxPIC
A78RxxPI
TO-220F-4SL
A78RxxPI(①)
YYWW(②)
① Device Code
② Year & Week Code
Device Selection Guide
Device
Output Voltage
A78R33PIC
3.3V
A78R35PIC
3.5V
A78R05PIC
5.0V
A78R06PIC
6.0V
A78R08PIC
8.0V
A78R09PIC
9.0V
A78R12PIC
12.0V
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A78RxxPIC
Block Diagram
Absolute Maximum Ratings
[Ta=25℃]
Characteristic
Symbol
Rating
Unit
Input Voltage
VI
18(All Others)
V
25(A78R12PIC)
V
VCT
18
V
PD1(No Heatsink)
2.0
W
PD2(With Heatsink)
20
W
Junction Temperature
TJ
150
°C
Operating Temperature Range
Topr
-20 ~ 80
°C
Storage Temperature Range
Tstg
-55 ~ 150
°C
Control Input Voltage
Power Dissipation
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A78RxxPIC
Electrical Characteristics
(VI = VO+2V, Io = 500mA, VCT(High)=2.7V, Ta = 25°C, unless otherwise specified)
Electric Characteristic
Output Voltage
Symbol
Conditions
VO
Min.
Typ.
Max.
Unit
A78R33PIC
-
3.22
3.3
3.38
V
A78R35PIC
-
3.41
3.5
3.59
V
A78R05PIC
-
4.88
5.0
5.12
V
A78R06PIC
-
5.85
6.0
6.15
V
A78R08PIC
-
7.80
8.0
8.20
V
A78R09PIC
-
8.78
9.0
9.22
V
A78R12PIC
-
11.7
12.0
12.3
V
Line Regulation
△VO(△VI)
Note1, IO=500mA
-
0.5
2.5
%
Load Regulation
△VO(△IL)
5mA≤IO≤1.0A
-
0.1
2.0
%
Quiescent Current
IQC
IO=0mA
-
-
10
mA
Ripple Rejection Ratio
RR
(VO+2V)≤VI≤12V, IO=50mA
f=120Hz
45
55
-
dB
Dropout Voltage
VDROP
-
-
0.5
V
Control Voltage High
VCT(High)
IO=0mA, Output ON
2.0
-
-
V
Control Voltage Low
VCT(Low)
IO=0mA, Output OFF
-
-
0.8
V
Control Bias Current High
ICT(High)
VCT(High) = 2.7V
-
-
20
μA
Control Bias Current Low
ICT(Low)
VCT(Low) = 0.4V
-
-
-0.4
mA
IO=1.0A
Note
1. A78R33: VI=4.3V~12V
A78R35: VI=4.5V~12V
A78R05: VI=6V~12V
A78R06: VI=7V~15V
A78R08: VI=9V~16V
A78R09: VI=10V~16V
A78R12: VI=12V~16V
◈ Test Circuit of A78RxxPIC
㎌
㎌
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A78RxxPIC
Electrical Characteristic Curves
Fig.1 IO vs. VO
Fig.2 Ta vs. PD
25
Power dissipation PD [W]
Relative Output Voltage [%]
100
80
60
40
20
20
15
10
5
Without Heat Sink
A78RxxPIC
0
0
0
0.5
1.0
1.5
2.5
2.0
3.0
0
3.5
Output Current IO [A]
25
100
125
150
Fig.4 VI vs. IQC
30
30
A78R33PIC
VI=0V~12V
24
Quiescent Current IQC [mA]
Quiescent Current IQC [mA]
75
Ambient Temperature Ta [˚C]
Fig.3 VI vs. IQC
18
12
6
IO=0.0A
A78R05PIC
VI=0V~12V
24
18
12
IO=1.0A
6
IO=0.5A
IO=0.0A
0
0
0
2
4
6
10
8
0
12
2
4
6
Input Voltage VI [V]
Fig.5 VI vs. IQC
Fig.6 VI vs. IQC
12
18
12
6
Quiescent Current IQC [mA]
30
A78R08PIC
VI=0V~15V
24
A78R09PIC
VI=0V~15V
24
18
12
6
IO=0.0A
0
0
10
8
Input Voltage VI [V]
30
Quiescent Current IQC [mA]
50
2.5
5.0
7.5
10.0
12.5
IO=0.0A
15.0
Input Voltage VI [V]
0
0
2.5
5.0
7.5
10.0
12.5
15.0
Input Voltage VI [V]
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A78RxxPIC
Electrical Characteristic Curves
Fig.8 Tj vs. IQC
Fig.7 VI vs. IQC
5
A78RxxPIC
IO=0.0A
A78R12PIC
VI=0V~20V
40
Quiescent Current IQC [mA]
Quiescent Current IQC [mA]
50
30
20
10
IO=0.0A
0
0
4
3
2
1
0
-25
4
8
12
16
20
24
0
50
75
100
125
Junction Temperature Tj [℃]
Input Voltage VI [V]
Fig.10 Tj vs. VO
Fig.9 VCT vs. VO
125
5.2
100
5.1
Output Voltage VO [V]
Relative Output Voltage [%]
25
75
50
25
A78R05PIC
IO=0.5A
5.0
4.9
4.8
A78RxxPIC
0
0
0.5
1.0
1.5
2.0
2.5
3.0
4.7
-25
0
25
50
75
100
125
Junction Temperature Tj [℃]
Control Voltage VCT [V]
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A78RxxPIC
Outline Dimension
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A78RxxPIC
The AUK Corp. products are intended for the use as components in general electronic
equipment (Office and communication equipment, measuring equipment, home
appliance, etc.).
Please make sure that you consult with us before you use these AUK Corp. products
in equipments which require high quality and / or reliability, and in equipments which
could have major impact to the welfare of human life(atomic energy control, airplane,
spaceship, transportation, combustion control, all types of safety device, etc.). AUK
Corp. cannot accept liability to any damage which may occur in case these AUK Corp.
products were used in the mentioned equipments without prior consultation with AUK
Corp..
Specifications mentioned in this publication are subject to change without notice.
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