Page No. : 1/12
RS78XX
1.0A Low Dropout Positive Voltage Regulator
General Description
The RS78XX series can provide local on‐card regulation, eliminating the distribution problems associated with single point
regulation. Each employs internal current limiting, thermal shut‐down and safe operating area protection, making it essen‐
tially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed
primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages
and currents.
Features
Applications
●
Output Current In Excess of 1A
●
SCSI‐2 Active Termination
●
Output Voltages of 5V, 6V, 8V, 9V, 12V
●
High Efficiency Linear Regulators
●
Internal Short‐Circuit Current Limiting & Thermal
●
5V to 3.3V Voltage Converter
Overload Protection
●
Battery Charger
●
Guaranteed In Extended Temperature Range
●
Battery Management Circuits For Notebook And
Palmtop PCs
●
Core Voltage Supply: FPGA, PLD, DSP, CPU
Schematic Diagram & Equivalent Circuit
Input
1
Series
Pass
Element
Current
Generator
SOA
Protection
Output
3
V
IN
Starting
Circuit
Reference
Voltage
Error
Amplifier
Thermal
Protection
GND
2
V
OUT
This integrated circuit can be damaged by ESD. Orister Corporation recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DS‐RS78XX‐08
September, 2009
www.Orister.com
Page No. : 3/12
Absolute Maximum Ratings
Parameter
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Note:
(1)T
A
=25
o
C, TO‐252 / TO‐251: 1W, TO‐220AB: 2.7W
(2)T
C
=25
o
C, All package: 10W
Symbol
V
IN
P
D
T
OPR
T
STG
T
J
Maximum
40
Internally limited
(Note)
0 to 125
‐55 to 150
150
Unit
V
W
o
C
o
C
o
C
Thermal Data
Characteristic
Thermal Resistance Junction‐Case
Thermal Resistance Junction‐Ambient
Symbol
R
th(j‐c)
R
th(j‐a)
TO‐252 / TO‐251
12.5
125
TO‐220AB
12.5
47
Unit
C/W
o
C/W
o
RS7805A Series Electrical Characteristics
V
IN
=10V, I
OUT
=500mA, C
IN
=0.33uF, C
OUT
=0.1uF, 0°C≤T
J
≤125°C (unless otherwise specified)
Symbol
Parameter
Conditions
T
J
=25°C, I
OUT
=500mA
V
O
Output Voltage
5mA≤I
OUT
≤1A
7V≤V
IN
≤25V, P
OUT
≤15W
ΔV
O
ΔV
O
I
B
ΔI
B
eN
RR
V
D
R
O
I
SC
ΔV
O
/ΔT
DS‐RS78XX‐08
September, 2009
www.Orister.com
Line Regulation
T
J
=25°C, 7V≤V
IN
≤25V
T
J
=25°C, 8V≤V
IN
≤12V
T
J
=25°C, 5mA≤I
OUT
≤1A
T
J
=25°C, 250mA≤I
OUT
≤750mA
I
OUT
=5mA, T
J
=25°C
I
OUT
=500mA, 7V≤V
IN
≤25V, T
J
=25
o
C
5mA≤I
OUT
≤1A, V
IN
=10V, T
J
=25
o
C
B=10Hz~100KHz, I
OUT
=50mA, T
J
=25°C
10V≤V
IN
≤18V, f=120Hz, I
OUT
=50mA, T
J
=25
o
C
T
J
=25°C, I
OUT
=1A
f=1KHz
T
J
=25°C
0
o
C≤T
J
≤125
o
C
RS7805AJ/E/I
Min
4.85
4.85
‐
‐
‐
‐
‐
‐
‐
‐
57
‐
‐
‐
‐
Typ
5
5
3
1
15
5
3.9
‐
‐
50
73
2
17
2.3
‐
Max
5.15
5.15
50
25
100
50
8
1.3
0.5
‐
‐
2.5
‐
2.8
0.6
V
Units
mV
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Output Voltage Drift
mV
mA
mA
uV/V
O
dB
V
mΩ
A
mV/°C
Page No. : 4/12
RS7806A Series Electrical Characteristics
V
IN
=11V, I
OUT
=500mA, C
IN
=0.33uF, C
OUT
=0.1uF, 0°C≤T
J
≤125°C (unless otherwise specified)
Symbol
Parameter
Conditions
T
J
=25°C, I
OUT
=500mA
V
O
Output Voltage
5mA≤I
OUT
≤1A
8V≤V
IN
≤25V, P
OUT
≤15W
ΔV
O
ΔV
O
I
B
ΔI
B
eN
RR
V
D
R
O
I
SC
ΔV
O
/ΔT
Line Regulation
T
J
=25°C, 8V≤V
IN
≤25V
T
J
=25°C, 9V≤V
IN
≤13V
T
J
=25°C, 5mA≤I
OUT
≤1A
T
J
=25°C, 250mA≤I
OUT
≤750mA
I
OUT
=5mA, T
J
=25°C
I
OUT
=500mA, 9V≤V
IN
≤25V, T
J
=25
o
C
5mA≤I
OUT
≤1A, V
IN
=11V, T
J
=25
o
C
B=10Hz~100KHz, I
OUT
=50mA, T
J
=25°C
11V≤V
IN
≤19V, f=120Hz, I
OUT
=50mA, T
J
=25
o
C
T
J
=25°C, I
OUT
=1A
f=1KHz
V
IN
=45V, T
J
=25°C
0
o
C≤T
J
≤125
o
C
RS7806AJ/E/I
Min
5.82
5.82
‐
‐
‐
‐
‐
‐
‐
‐
56
‐
‐
‐
‐
Typ
6
6
3
1
15
5
3.9
‐
‐
‐
72
2
17
2.3
‐
Max
6.18
6.18
60
25
100
50
8
1.3
0.5
55
‐
2.5
‐
2.8
0.7
V
Units
mV
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Output Voltage Drift
mV
mA
mA
uV/V
O
dB
V
mΩ
A
mV/°C
RS7808A Series Electrical Characteristics
V
IN
=14V, I
OUT
=500mA, C
IN
=0.33uF, C
OUT
=0.1uF, 0°C≤T
J
≤125°C (unless otherwise specified)
Symbol
Parameter
Conditions
T
J
=25°C, I
OUT
=500mA
V
O
Output Voltage
5mA≤I
OUT
≤1A
10V≤V
IN
≤25V, P
OUT
≤15W
ΔV
O
ΔV
O
I
B
ΔI
B
eN
RR
V
D
R
O
I
SC
ΔV
O
/ΔT
DS‐RS78XX‐08
September, 2009
www.Orister.com
Line Regulation
T
J
=25°C, 10.5V≤V
IN
≤25V
T
J
=25°C, 11V≤V
IN
≤17V
T
J
=25°C, 5mA≤I
OUT
≤1A
T
J
=25°C, 250mA≤I
OUT
≤750mA
I
OUT
=5mA, T
j
=25°C
I
OUT
=500mA, 10.5V≤V
IN
≤25V, T
J
=25
o
C
5mA≤I
OUT
≤1A, V
IN
=14V, T
J
=25
o
C
B=10Hz~100KHz, I
OUT
=50mA, T
J
=25°C
14V≤V
IN
≤21.5V, f=120Hz, I
OUT
=50mA, T
J
=25
o
C
T
J
=25°C, I
OUT
=1A
f=1KHz
T
J
=25°C
0
o
C≤T
J
≤125
o
C
RS7808AJ/E/I
Min
7.76
7.76
‐
‐
‐
‐
‐
‐
‐
‐
53
‐
‐
‐
‐
Typ
8
8
3
1
15
5
3.9
‐
‐
‐
69
2
17
2.3
‐
Max
8.24
8.24
80
40
100
50
8
1.3
0.5
70
‐
2.5
‐
2.8
1
V
Units
mV
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Output Voltage Drift
mV
mA
mA
uV/V
O
dB
V
mΩ
A
mV/°C
Page No. : 5/12
RS7809A Series Electrical Characteristics
V
IN
=15V, I
OUT
=500mA, C
IN
=0.33uF, C
OUT
=0.1uF, 0°C≤T
J
≤125°C (unless otherwise specified)
Symbol
Parameter
Conditions
T
J
=25°C, I
OUT
=500mA
V
O
Output Voltage
5mA≤I
OUT
≤1A
11V≤V
IN
≤25V, P
OUT
≤15W
ΔV
O
ΔV
O
I
B
ΔI
B
eN
RR
V
D
R
O
I
SC
ΔV
O
/ΔT
Line Regulation
T
J
=25°C, 11.5V≤V
IN
≤25V
T
J
=25°C, 13V≤V
IN
≤19V
T
J
=25°C, 5mA≤I
OUT
≤1A
T
J
=25°C, 250mA≤I
OUT
≤750mA
I
OUT
=5mA, T
j
=25°C
I
OUT
=500mA, 11.5V≤V
IN
≤26V, T
J
=25
o
C
5mA≤I
OUT
≤1A, V
IN
=15V, T
J
=25
o
C
B=10Hz~100KHz, I
OUT
=50mA, T
J
=25°C
15V≤V
IN
≤22.5V, f=120Hz, I
OUT
=50mA, T
J
=25
o
C
T
J
=25°C, I
OUT
=1A
f=1KHz
T
J
=25°C
0
o
C≤T
J
≤125
o
C
RS7809AJ/E/I
Min
8.73
8.73
‐
‐
‐
‐
‐
‐
‐
‐
51
‐
‐
‐
‐
Typ
9
9
3
1
15
5
3.9
‐
‐
‐
67
2
17
2.3
‐
Max
9.27
9.27
90
45
100
50
8
1.3
0.5
75
‐
2.5
‐
2.8
1.1
V
Units
mV
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Output Voltage Drift
mV
mA
mA
uV/V
O
dB
V
mΩ
A
mV/°C
RS7812A Series Electrical Characteristics
V
IN
=19V, I
OUT
=500mA, C
IN
=0.33uF, C
OUT
=0.1uF, 0°C≤T
J
≤125°C (unless otherwise specified)
Symbol
Parameter
Conditions
T
J
=25°C, I
OUT
=500mA
V
O
Output Voltage
5mA≤I
OUT
≤1A
14V≤V
IN
≤30V, P
OUT
≤15W
ΔV
O
ΔV
O
I
B
ΔI
B
eN
RR
V
D
R
O
I
SC
ΔV
O
/ΔT
DS‐RS78XX‐08
September, 2009
www.Orister.com
Line Regulation
T
J
=25°C, 14.5V≤V
IN
≤30V
T
J
=25°C, 16V≤V
IN
≤22V
T
J
=25°C, 5mA≤I
OUT
≤1A
T
J
=25°C, 250mA≤I
OUT
≤750mA
I
OUT
=5mA, T
j
=25°C
I
OUT
=500mA, 14.5V≤V
IN
≤30V, T
J
=25
o
C
5mA≤I
OUT
≤1A, V
IN
=19V, T
J
=25
o
C
B=10Hz~100KHz, I
OUT
=50mA, T
J
=25°C
19V≤V
IN
≤25V, f=120Hz, I
OUT
=50mA, T
J
=25
o
C
T
J
=25°C, I
OUT
=1A
f=1KHz
T
J
=25°C
0
o
C≤T
J
≤125
o
C
RS7812AJ/E/I
Min
11.64
11.64
‐
‐
‐
‐
‐
‐
‐
‐
50
‐
‐
‐
‐
Typ
12
12
10
3
12
4
3.9
‐
‐
‐
66
2
18
2.3
‐
Max
12.36
12.36
120
60
100
60
8
1.3
0.5
90
‐
2.5
‐
2.8
1.6
V
Units
mV
Load Regulation
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Output Voltage Drift
mV
mA
mA
uV/V
O
dB
V
mΩ
A
mV/°C
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