SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 987, REV. -
SHD519110
LINEAR VOLTAGE REGULATOR
THREE TERMINAL-POSITIVE-ADJUSTABLE
7.5 Amp, Low Dropout Voltage
LCC-3P (SMD Hermetic Package
Features:
•
Three-Terminal Adjustable
•
Operates Down to 1V Dropout
•
Guaranteed Dropout Voltage at Multiple
Current Levels
•
On-Chip Thermal Limiting
•
Line Regulation: 0.035%
•
Load Regulation: 0.20%
•
Fixed Versions Available
•
Electrically Equivalent to LT®1083
Applications:
•
High Efficiency Linear Regulators
•
Post Regulator for Switching Supplies
•
Constant Current Regulators
Description:
This positive adjustable regulator is
designed to provide 7.5A with high efficiency using simple
3-terminal configurations. All internal circuitry is
designed to operate down to 1V input-to-output differential
and the dropout voltage is fully specified as a function of
load current. Dropout is guaranteed at a maximum of 1.5V
at maximum output current, decreasing at lower load
currents. Available in fixed voltages.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal
limiting provides protection against any combination of
overload that would create excessive junction
temperatures.
ELECTRICAL CHARACTERISTICS
PARAMETER
Input Voltage
Reference Voltage
Line Regulation Note(1,2)
Line Regulation Note(1,2)
Load Regulation Note(1,2,3)
Dropout Voltage
Current Limit
Current Limit
Adjust Pin
Adjust Pin Current Change
Minimum Load Current
Quiescent Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long Term Stability
RMS Output Noise
Thermal Resistance (J-C)
SYMBOL
Vin
Vref
∆Vout/∆Vin
∆Vout/∆Vin
∆Vout/∆Iout
V
DO
I
LIM
I
LIM
I
Adj
∆I
Adj
I
MIN
I
Q
∆Vin/∆Vout
∆Vout/∆T
∆Vout/∆T
(% of Vout)
Τ
JC
-55ºC < TA < 125ºC (UNLESS OTHERWISE SPECIFIED)
Test Conditions
1.5V (Vin-Vout) <25V, 10mA <Iout 7.5A
1.50V<Vin<15V,Iout=10mA
(Vin-Vout) = 15V to 30V 10mA<Iout<Ifull load
(Vin-Vout) = 3V 10mA<Iout<Ifull load
∆Vref
= 1%, Iout = 7.5A
(Vin-Vout)=5V
(Vin-Vout)= 25V
Typical value is at Tj =25ºC
1.5V<(Vin-Vout)<25V,10mA<Iout<Ifull load
(Vin-Vout)= 25V
Vin= 5.0V
f=120Hz.Cadj=25µF, Cout=25µF(Tant.), (Vin-
Vout)=3V,Iout=7.5.0A
T
A
=ºC, 30ms Pulse
-55ºC,<T
J
<+125ºC
TA=+125ºC, t=1000hrs
TA=25ºC, 10Hz<f<10kHz
Surface mount LCC-3P package
Min
1.225
TYP
-
1.250
0.035
0.60
0.50
1.30
9.50
1.00
55
0.2
5
8
72
0.004
0.50
0.30
0.003
-
Max.
35
1.270
0.20
1.00
1.00
1.50
-
-
120
5
10
13
-
0.02
1.0
-
1.43
Units
V
V
%
%
%
V
A
A
µA
µA
mA
mA
dB
%/W
%
%
%
ºC/W
8.00
0.40
60
Notes:
1) See thermal regulation specification for changes in output voltage due to heating effects. Load and line regulation are measured at a constant
junction temperature by low duty cycle pulse testing.
2) Line and load regulation is guaranteed up to the maximum power dissipation in the package. Input/output differential and the output current
determine power dissipation. Guaranteed maximum output power will not be available over the full / input/output voltage range.
3) I
Full
Load is defined as the maximum value of output load current as a function of the input-to-output voltage. I
Full
Load is equal to 7.5 Amps.
•
221 West Industry Court
•
Deer Park, NY 11729-4681
•
Phone (631) 586-7600
•
Fax (631) 242-9798
•
•
World Wide Web Site - http://www.sensitron.com
•
E-Mail Address - sales@sensitron.com
•
SHD519110
TECHNICAL DATA
DATA SHEET 987, REV. -
INPUT/OUTPUT VOLTAGE DIFFERENTIAL (V)
5V, 7 .5 A Re g u la to r
OUT
ADJ
10µF
365
Ω
1%
*REQUIRED FOR STABILITY
121
Ω
1%
5V AT 7.5A
D ro po ut V oltag e vs O utp ut C u rren t
2
V
I N
6.5V
IN
+
+
10µF*
TANTALUM
1
0
0
50%
OUTPUT CURRENT
100%
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
Dropout Voltage
2
12
IN DIC AT ES G UAR AN TEE D T EST PO IN T
Short-Circut Current
0.10
Load Regulation
∆
I = 7.5A
SHORT-CIRCUIT CURRENT (A)
–40°C
≤
T
J
≤
150°C
0°C
≤
T
J
≤
125°C
10
25°C
150°C
OUTPUT VOLTAGE DEVIATION (%)
0.05
8
0.00
1
T
J
= 150°C
T
J
= 25°C
T
J
– 55°C
=
6
– 55°C
4
I
F UL L L OA D
2
GU AR ANT EED
– 0.05
– 0.10
– 0.15
0
0
1
2
3
4
5
6
7
8
9
10
OUT PUT C URR EN T (A)
0
0
5
10
15
20
25
30
35
INP UT /OU T PUT D IF FE REN TIAL (V )
– 0.20
–50
–25
0
25
50
75
100
125
150
T EM PERAT UR E (°C )
Minimum Operating Current
10
Temperature Stability
1.27
100
90
Adjust Pin Current
MINIMUM OPERATING CURRENT (mA)
9
REFERENCE VOLTAGE (V)
7
6
5
4
3
2
1
0
0
T
J
= –55°C
5 10 15 20
30
35
25
INPUT/OUTPUT DIFFERENTIAL (V)
T
J
=25°C
T
J
=150°C
1.26
ADJUST PINCURRENT (
µ
A)
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
8
80
70
60
50
40
30
20
10
0
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
1.25
1.24
1.23
•
221 West Industry Court
•
Deer Park, NY 11729-4681
•
Phone (631) 586-7600
•
Fax (631) 242-9798
•
•
World Wide Web Site - http://www.sensitron.com
•
E-Mail Address - sales@sensitron.com
•
SHD519110
TECHNICAL DATA
DATA SHEET 987, REV. -
Load Transient Response
OUTPUT VOLTAGE
DEVIATION (V)
Line Transient Response
150
OUTPUT VOLTAGE
DEVIATION (mV)
0.6
0.4
0.2
0.0
–0.2
–0.4
8
6
4
2
0
0
50
TIME (
µ
s)
100
C
IN
= 1
µ
F
C
OU T
= 10
µ
F TANTALUM
V
O UT
=10V
V
IN
=13V
PRELOAD
=100mA
C
AD J
= 0
C
A DJ
= 1
µ
F
100
50
0
–50
–100
–150
14
13
12
11
0
C
AD J
= 0
C
AD J
= 1
µ
F
LOAD CURRENT (A)
DEVIATION (V)
INPUT
V
OUT
= 10V
I
IN
= 0.2A
C
IN
= 1
µ
F TANTALUM
C
OUT
= 10
µ
F TANTALUM
100
TIME (
µ
s)
200
Adjustable Regulator Configuration or
Changing Voltage of Fixed Regulator
V
I N
V
IN
Optional Configuration to Reduce Low
Side Parasitic Resistance Effects
R
PL
HI SIDE PARASITIC
LINE RESISTANCE
IN
ADJ
R1
R
OUT
V
OUT
C
2
22
µ
F
+
IN
C1
10
µ
F
ADJ
I
ADJ
55
µ
A
OUT
V
REF
R1
R2
+
V
OU T
= V
REF
(1 + R2/R1) + I
ADJ
(R2)
R2
R
P H
LO SIDE PARASITIC
LINE RESISTANCE
•
221 West Industry Court
•
Deer Park, NY 11729-4681
•
Phone (631) 586-7600
•
Fax (631) 242-9798
•
•
World Wide Web Site - http://www.sensitron.com
•
E-Mail Address - sales@sensitron.com
•
SHD519110
TECHNICAL DATA
DATA SHEET 987, REV. -
Block D ia gram
V
I N
THERMAL
LIMIT
V
OUT
V
AD J
MECHANICAL DIMENSIONS: in Inches / mm
.145
(3.68)
.037
(.94)
.030 (.76) Min.
.050 (1.27)
2
.375
(9.53)
1
3
.140 (3.56)Typ.
.035 (.89) Min. .450 (11.43)
LCC-3P
.415
(10.54)
.625
(15.88)
.157 (3.99)
(
)
(
)
Pa d 1 = Vout, Pad 2 = A djus t, Pa d 3 = Vin (C ontact fac tory for othe r configura tions)
•
221 West Industry Court
•
Deer Park, NY 11729-4681
•
Phone (631) 586-7600
•
Fax (631) 242-9798
•
•
World Wide Web Site - http://www.sensitron.com
•
E-Mail Address - sales@sensitron.com
•
+
–
(
)
SHD519110
TECHNICAL DATA
DATA SHEET 987, REV. -
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the
datasheet(s).
2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment, medical
equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by means of users’
fail-safe precautions or other arrangement .
3- In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during operation of
the user’s units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any
other problems that may result from applications of information, products or circuits described in the datasheets.
4- In no event shall Sensitron Semiconductor be liable for any failure in a semiconductor device or any secondary damage resulting from use at
a value exceeding the absolute maximum rating.
5- No license is granted by the datasheet(s) under any patents or other rights of any third party or Sensitron Semiconductor.
6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of Sensitron
Semiconductor.
7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will hinder
maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third party. When
exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and regulations.
•
221 West Industry Court
•
Deer Park, NY 11729-4681
•
Phone (631) 586-7600
•
Fax (631) 242-9798
•
•
World Wide Web Site - http://www.sensitron.com
•
E-Mail Address - sales@sensitron.com
•
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