For assistance or to order, call
(800) 531-5782
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902 http://www.powertrends.com
2
Revised 6/30/98
Standard Application
C1 = Optional 1F ceramic
C2
= Optional 1F ceramic
Pin-Out Information
Pin
Function
1
V
in
2
GND
3
V
out
Ordering Information
78SR1 C
XX
Y
05
= 5.0 Volts
53
= 5.25 Volts
06
= 6.0 Volts
74
= 7.15 Volts
08
= 8.0 Volts
09
= 9.0 Volts
10
= 10.0 Volts
12
= 12.0 Volts
14
= 13.9 Volts
15
= 15.0 Volts
Package Suffix
V
= Vertical Mount
S
= Surface Mount
H
= Horizontal
Mount
1.5 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
Very Small Footprint
High Efficiency > 85%
Self-Contained Inductor
Internal Short-Circuit Protection
Over-Temperature Protection
Wide Input Range
The 78SR100 is a series of wide input
voltage, 3-terminal Integrated Switching
Regulators (ISRs). These ISRs have a maxi-
mum output current of 1.5A and an output
voltage that is laser trimmed to a variety of
industry standard voltages.
These 78 series regulators have excellent
line and load regulation with internal short-
circuit and over-temperature protection, are
very flexible, and may be used in a wide
variety of applications.
7 8 S R 1 0 0
S e r i e s
Output Voltage
Specifications
Characteristics
78SR100 SERIES
(T
a
= 25C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
I
o
Over V
in
range
0.1*
--
1.5
A
Short Circuit Current
I
sc
V
in
= V
in
min
--
3.5
--
Apk
Input Voltage Range
V
in
0.1
I
o
1.5A
V
o
= 5V
7
--
30
V
V
o
= 12V
14.5
--
30
V
Output Voltage Tolerance
V
o
Over V
in
range, I
o
=1.5A
--
1.0
2.0
%Vo
T
a
= 0C to +60C
Line Regulation
Reg
line
Over V
in
range
--
0.2
0.4
%Vo
Load Regulation
Reg
load
0.1
I
o
1.5A
--
0.1
0.2
%Vo
V
o
Ripple/Noise
V
n
V
in
= 9V, I
o
= 1.5A
V
o
= 5V
--
50
--
mV
pp
V
in
= 16V, I
o
= 1.5A
V
o
= 12V
80
mV
pp
Transient Response
t
tr
50% load change
--
100
--
Sec
V
o
over/undershoot
--
30
--
%Vo
Efficiency
V
in
= 10V, I
o
= 1A
V
o
= 5V
--
85
--
%
V
in
= 17V, I
o
= 1A
V
o
= 12V
--
90
--
%
Switching Frequency
o
Over V
in
range, I
o
=1.5A
600
650
700
kHz
Absolute Maximum
T
a
--
-40
--
+85
C
Operating Temperature Range
Recommended Operating
T
a
Free Air Convection, (40-60LFM)
Temperature Range
At V
in
= 24V, I
o
=1.0A
-40
--
+80**
C
Thermal Resistance
ja
Free Air Convection, (40-60LFM)
--
45
--
C/W
Storage Temperature
T
s
--
-40
--
+125
C
Mechanical Shock
--
Per Mil-STD-883D, Method 2002.3
--
500
--
G's
Mechanical Vibration
--
Per Mil-STD-883D, Method 2007.2,
--
5
--
G's
20-2000 Hz, soldered in a PC board
Weight
--
--
--
6.5
--
grams
*ISR will operate down to no load with reduced specifications.
**See Thermal Derating chart.
78SR100
Vout
GND
GND
Vin
C1
1
2
3
C2
Pkg Style 500
For assistance or to order, call
(800) 531-5782
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902 http://www.powertrends.com
3
DA
T
A
SHEETS
C H A R A C T E R I S T I C D A T A
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
9
13
17
21
25
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
9
12
15
18
21
24
27
30
33
36
39
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1 6
1 9
2 2
2 5
2 8
3 1
3 4
3 7
4 0
78SR133_ 3.3 VDC
(See Note 1)
78SR105_ 5.0 VDC
(See Note 1)
78SR112_ 12.0 VDC
(See Note 1)
Efficiency vs Output Current
Ripple vs Output Current
Thermal Derating (T
a
)
(See Note 2)
Power Dissipation vs Output Current
Efficiency (%)
Ripple (mV)
Iout (A)
Pd (W
atts)
Efficiency (%)
Efficiency (%)
Ripple (mV)
Ripple (mV)
Iout (A)
Iout (A)
Pd (W
atts)
Pd (W
atts)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Vin (Volts)
Vin (Volts)
Vin (Volts)
85C
60C
70C
85C
85C
70C
Note 1:
All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25C. This data is considered typical data for the ISR.
Note 2:
Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)
60C
70C
7 8 S R 1 0 0
S e r i e s
Efficiency vs Output Current
Efficiency vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Thermal Derating (T
a
)
(See Note 2)
Thermal Derating (T
a
)
(See Note 2)
Power Dissipation vs Output Current
Power Dissipation vs Output Current
40
50
60
70
80
90
100
0.0
0.5
1.0
1.5
7.0V
10.0V
15.0V
20.0V
25.0V
30.0V
Vin
0
10
20
30
40
50
60
0.0
0.5
1.0
1.5
7.0V
10.0V
15.0V
20.0V
25.0V
30.0V
Vin
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.0
0.5
1.0
1.5
7.0V
10.0V
15.0V
20.0V
25.0V
30.0V
Vin
40
50
60
70
80
90
100
0.0
0.5
1.0
1.5
7.0V
10.0V
15.0V
20.0V
25.0V
30.0V
Vin
0
10
20
30
40
50
60
70
80
0.0
0.5
1.0
1.5
7.0V
10.0V
15.0V
20.0V
25.0V
30.0V
Vin
60C
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.0
0.5
1.0
1.5
7.0V
10.0V
15.0V
20.0V
25.0V
30.0V
Vin
40
50
60
70
80
90
100
0.0
0.5
1.0
1.5
14.0V
20.0V
25.0V
30.0V
35.0V
Vin
0
20
40
60
80
100
120
140
0.0
0.5
1.0
1.5
14.0V
20.0V
25.0V
30.0V
35.0V
Vin
0.0
0.5
1.0
1.5
2.0
2.5
0.0
0.5
1.0
1.5
14.0V
20.0V
25.0V
30.0V
35.0V
Vin
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish
MSL Peak Temp
(3)
78SR105HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR105SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR105SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR105TC
NRND
SIP MOD
ULE
EFT
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR105VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR106HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR106SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR106SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR106TC
NRND
SIP MOD
ULE
EFT
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR106VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR108HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR108SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR108SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR108VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR109HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR109SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Level-1-215C-UNLIM
78SR109SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR109VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR110HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR110SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR110SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR110VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR112HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR112SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR112SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
Addendum-Page 1
Orderable Device
Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish
MSL Peak Temp
(3)
78SR112TC
NRND
SIP MOD
ULE
EFT
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR112VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR114HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR114SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR114SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR114VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR114WC
OBSOLETE SIP MOD
ULE
EFW
3
TBD
Call TI
Call TI
78SR115HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR115SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR115SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR115TC
OBSOLETE SIP MOD
ULE
EFT
3
TBD
Call TI
Level-1-215C-UNLIM
78SR115VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR153HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR153SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR153SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR153TC
OBSOLETE SIP MOD
ULE
EFT
3
TBD
Call TI
Call TI
78SR153VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR174HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR174SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78SR174SCT
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78SR174VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco
Plan
-
The
planned
eco-friendly
classification:
Pb-Free
(RoHS)
or
Green
(RoHS
&
no
Sb/Br)
-
please
check
http://www.ti.com/productcontent
for the latest availability information and additional product content details.
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
Addendum-Page 2
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
Addendum-Page 3
PDF 
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