TS1083
7.5 Amp Low Dropout Positive Voltage Regulator
General Description
The TS1083 Series of high performance positive voltage regulators are designed for use in applications requiring low dropout
performance at full rated current. Additionally, the TS1083 Series provide excellent regulation over variations due to changes in line,
load and temperature. Outstanding features include low dropout performance at rated current, fast transient response, internal current
limiting and thermal shutdown protection of the output device. The TS1083 Series are three terminal regulators with fixed and
adjustable voltage options available in popular packages.
Features
a
Low dropout voltage 1.3V max.
a
Full current rating over line and temperature
a
Fast transient response
a
Total output regulation 2% over line, load and
temperature
a
Adjust pin current max 120
A over temperature
a
Line regulation typical 0.015%.
a
Load regulation typical 0.05%.
a
Fixed/adjustable output voltage
a
TO-220 package
Block Diagram
Ordering Information
Absolute Maximum Rating
INPUT
OUTPUT
ADJ/GND
V
REF
VOLTAGE
REGULATION
AMPLIFIER
S.O.A
CURRENT
LIMITING
AMPLIFIER
THERMAL OVERLOAD
LIMIT
SENSE
Low dropout voltage 1.3V max.
PARAMETER
SYMBOL
MAXIMUM
UNITS
Input Voltage
V
IN
12
V
Power Dissipation
P
D
Internally Limited
W
Thermal Resistance Junction to Case
JC
2
Thermal Resistance Junction to Ambient
JA
50
Operating Junction Temperature Range
T
J
0 to +125
Operating Ambient Temperature Range
T
A
-20 to +85
Storage Temperature Range
T
STG
-25 to +150
Lead Temperature (Soldering) 10 Sec
T
LEAD
260
+
/ W
+
TS1083CZ
TS1083CZ-2.5
TS1083CZ-3.3
-20 to +85
+
TO-220
DEVICE
(Ambient)
PACKAGE
OPERATING TEMPERATURE
TO-220
Electrical Characteristics
Unless otherwise specified,
Adjust V
IN
=2.75V to 12V and Adjust I
O
=10mA to 7.5A
Fixed V
IN
=4.75V to 12V and Fixed I
O
=10mA to 7.5A
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Bandwidth of 10Hz to10KHz.
(3) 120Hz input ripple(C
ADJ
for ADJ)=25
F.
(4) Over Temp. - over specified operating junction temperature range.
V
IN
- V
OUT
I
O
T
J
(4)
MIN
TYP
MAX
Output Voltage
(1)
5V
10mA
25
0.99
*
V
O
*
1.01
*
V
O
*
Fixed Voltage
Over Temp.
0.98
*
V
O
*
1.02
*
V
O
*
Reference Voltage
(1)
5V
10mA
25
1.238
1.262
Adj Voltage
Over Temp.
1.225
1.275
Line Regulation
(1)
25
0.015
(Vin-Vout=3V)
Over Temp.
0.035
Load Regulation
(1)
25
0.05
0.3
(Vin-Vout=3V)
Over Temp.
0.2
0.4
Dropout Voltage
25
1
V
REF
=
1
+
Over Temp.
1.1
1.3
Current Limit
(Vin-Vout=5V)
Quiescent Current
Fixed Model
Temperature Coefficient
T
C
0.005
/
+
25
55
120
Adjust Pin Current Change
I
ADJ
0.2
5
Temperature Stability
T
S
5V
500mA
0.5
Minimum Load Current
Adjust Model
RMS Output Noise
(2)
V
N
25
0.003
V
O
Ripple Rejection Ratio
(3)
R
A
5V
7.5A
Over Temp.
60
72
dB
A
mA
V
A
mA
9.5
12
5
0.2
14
10
Adjust Pin Current
Over Temp.
Over Temp.
8.5
10mA
I
Q
I
ADJ
I
O
5V
5V
REG
(LINE)
REG
(LOAD)
V
D
I
CL
V
REF
1.250
V
TEST CONDITIONS
TEST LIMITS
PARAMETER
SYMBOL
UNITS
V
O
V
O
V
IN
4.75V
3.3V
OUT
C1
10 F
C2
10 F
1
3
TS1083-3.3
Fixed Voltage Regulator
(1)(2)
+
+
>
V
2/TAB
I
Q
(1) C1 NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
(2) C2 REQUIRED FOR STABILITY
(1) C1 NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
(2) C2 REQUIRED FOR STABILITY
V
in
4.75V
>
V
out
3.45V
C1
10
F
C2
10
F
I
ADJ
V
ref
1
3
R1
133
1%
R2
232
1%
TS1083-ADJ
Adjustable Voltage Regulator
(1)(2)
+
+
2/TAB
V
out
= V
ref
(1+R
2
/R
1
) + I
adj
R
2
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