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 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
7 8 H T 2 0 0
S e r i e s
Standard Application
C1 = Optional 1F ceramic
C2
= Required 100F electrolytic
Pin-Out Information
Pin No. Function
1
V
i
n
2
GND
3
V
out
Ordering Information
78HT2 C
Output Voltage
(For dimensions and PC board
layout see Package Style 500.)
XX
Y
33
= 3.3 Volts
46
= 4.6 Volts
05
= 5.0 Volts
53
= 5.25 Volts
65
= 6.5 Volts
75
= 7.5 Volts
10
= 10.0 Volts
Package Suffix
V
= Vertical Mount
S
= Surface Mount
H
= Horizontal
Mount
High Efficiency > 82%
Wide Input Range
Self-Contained Inductor
Short-Circuit Protection
Over-Temperature Protection
Fast Transient Response
The 78HT200 is a series of wide
input voltage, 3 terminal Integrated
Switching Regulators (ISRs). Employ-
ing a ceramic substrate, these ISRs
have a maximum output current of 2A.
The output voltage is laser trimmed
for high accuracy.
The 78HT200 series regulators
have internal short-circuit and over-
temperature protection and may be
used in a wide variety of applications.
78HT200
C2
+
Vout
GND
GND
Vin
C1
1
2
3
Specifications
Characteristics
78HT200 SERIES
(T
a
= 25C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
I
o
Over V
in
range
0.1*
--
2.0
A
Input Voltage Range
V
in
I
o
= 0.1 to 2.0A
V
o
< 4.6V
7
--
15
V
V
o
> 4.6V
V
o
+2V
--
28
V
Output Voltage Tolerance
V
o
Over V
in
range, I
o
= 2.0A
--
1.0
2.0
%Vo
T
a
= 0C to +60C
Line Regulation
Reg
line
Over V
in
range
--
0.4
0.8
%V
o
Load Regulation
Reg
load
0.1
I
o
2.0A
--
0.2
0.4
%V
o
Ripple/Noise
V
n
V
in
= V
in
min
, I
o
= 2.0A
--
1
--
%Vo
Transient Response
t
tr
50% load change
--
100
--
Sec
(with 100F output cap)
V
o
over/undershoot
5.0
%V
o
Efficiency
V
in
= 9V, I
o
= 2.0A, V
o
= 5V
--
82
--
%
Switching Frequency
o
Over V
in
and I
o
ranges V
o
> 4.6V
700
750
800
kHz
V
o
= 3.3V
0.95
1.0
1.05
MHz
Absolute Maximum
T
a
--
-40
--
+85
C
Operating Temperature Range
Recommended Operating
T
a
Free Air Convection, (40-60LFM)
-40
--
+85**
C
Temperature Range
Over V
in
and I
o
ranges
Thermal Resistance
ja
Free Air Convection, (40-60LFM)
--
38
--
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
--
--
--
7
--
Grams
* ISR will operate down to no load with reduced specifications.
** See Thermal Derating chart.
Note: The 78HT200 Series requires a 100F electrolytic or tantalum output capacitor for proper operation in all applications.
Revised 9/22/99
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
C H A R A C T E R I S T I C D A T A
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 Note)
78HT205_ 5.0 VDC
(See Note 1)
Efficiency vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Efficiency (%)
Ripple (mV)
PD (Watts)
Iout (A)
Iout (A)
Iout (A)
7 8 H T 2 0 0
S e r i e s
78HT233_ 3.3 VDC
(See Note 1)
Efficiency vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Efficiency (%)
Ripple (mV)
PD (Watts)
Iout (A)
Iout (A)
Iout (A)
Vin
Vin
Vin
Vin
Vin
Vin
40
50
60
70
80
90
100
0.0
0.5
1.0
1.5
2.0
8.0V
10.0V
15.0V
20.0V
28.0V
40
50
60
70
80
90
100
0.0
0.5
1.0
1.5
2.0
8.0V
10.0V
12.0V
14.0V
15.0V
0
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
8.0V
10.0V
12.0V
14.0V
15.0V
0
10
20
30
40
50
60
0.0
0.5
1.0
1.5
2.0
8.0V
10.0V
15.0V
20.0V
28.0V
0.0
0.5
1.0
1.5
2.0
2.5
0.0
0.5
1.0
1.5
2.0
8.0V
10.0V
12.0V
14.0V
15.0V
0.0
0.5
1.0
1.5
2.0
2.5
0.0
0.5
1.0
1.5
2.0
8.0V
10.0V
15.0V
20.0V
28.0V
Thermal Derating (T
a
)
(See Note 2)
Iout (A)
Vin (Volts)
0.0
0.5
1.0
1.5
2.0
8
10
12
14
16
Thermal Derating (T
a
)
(See Note 2)
Iout (A)
Vin (Volts)
0.0
0.5
1.0
1.5
2.0
8
12
16
20
24
28
70C
85C
60C
85C
70C
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish
MSL Peak Temp
(3)
78HT205HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT205SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT205TC
NRND
SIP MOD
ULE
EFT
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT205VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT210HC
OBSOLETE SIP MOD
ULE
EFA
3
TBD
Call TI
Call TI
78HT210SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78HT210VC
OBSOLETE SIP MOD
ULE
EFD
3
TBD
Call TI
Call TI
78HT210WC
NRND
SIP MOD
ULE
EFW
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT233HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT233SC
NRND
SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78HT233VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT246HC
OBSOLETE SIP MOD
ULE
EFA
3
TBD
Call TI
Call TI
78HT246SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78HT246VC
OBSOLETE SIP MOD
ULE
EFD
3
TBD
Call TI
Call TI
78HT253HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT253SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78HT253VC
OBSOLETE SIP MOD
ULE
EFD
3
TBD
Call TI
Call TI
78HT265HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT265SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78HT265TC
NRND
SIP MOD
ULE
EFT
3
25
TBD
Call TI
Level-1-215C-UNLIM
78HT265VC
OBSOLETE SIP MOD
ULE
EFD
3
TBD
Call TI
Call TI
78HT275HC
OBSOLETE SIP MOD
ULE
EFA
3
TBD
Call TI
Call TI
78HT275SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78HT275VC
OBSOLETE SIP MOD
ULE
EFD
3
TBD
Call TI
Call TI
(1)
The marketing status values are defined as follows:
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
Addendum-Page 1
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.
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 2
IMPORTANT NOTICE
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enhancements, improvements, and other changes to its products and services at any time and to discontinue
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
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amplifier.ti.com
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