鈥?/div>
High Efficiency > 85%
Wide Input Range
Self-Contained Inductor
Short-Circuit Protection
Over-Temperature Protection
Fast Transient Response
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
This is the new generation of the
PT78HT200 Series wide input range
3 terminal regulators. These ISRs have
a maximum output current of 2.0 Amps.
The output voltage is laser trimmed
for high accuracy.
These 78 series regulators have excel-
lent line and load regulation with internal
short-circuit and over-temperature protec-
tion, and are offered in a variety of standard
output voltages. These ISRs are very flex-
ible and may be used in a wide variety of
applications.
Pin-Out Information
Pin
Function
V
i
n
GND
V
out
1
2
3
Vin
1
3
Ordering Information
PT78HT2
XX
Output Voltage
33
= 3.3 Volts
05
= 5.0 Volts
53
= 5.25 Volts
65
= 6.5 Volts
Y
Package Suffix
V
= Vertical Mount
S
= Surface Mount
H
= Horizontal
Mount
Standard Application
PT78HT200
2
Vout
+
COM
C1
COM
C2
C1 = Optional 1碌F ceramic
C2 = Required 100碌F electrolytic
Pkg Style 500
Specifications
Characteristics
(T
a
= 25擄C unless noted)
Output Current
Short Circuit Current
Input Voltage Range
PT78HT200 SERIES
Symbols
I
o
I
sc
V
in
鈭哣
o
Reg
line
Reg
load
V
n
t
tr
畏
Conditions
Over V
in
range
V
in
= V
in
min
Min
0.1*
鈥?/div>
V
o
=3.3V
V
o
=5V
V
o
=6.5V
9
9
10.5
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
V
o
=5V
鈥?/div>
700
950
-40
-40
鈥?/div>
-40
鈥?/div>
鈥?/div>
鈥?/div>
Typ
鈥?/div>
6.0
鈥?/div>
鈥?/div>
鈥?/div>
鹵1.0
鹵0.4
鹵0.2
鹵1
100
5.0
80
750
1,000
鈥?/div>
鈥?/div>
40
鈥?/div>
500
5
6.5
Max
2.0
鈥?/div>
15
28
28
鹵2.0
鹵0.8
鹵0.4
鈥?/div>
鈥?/div>
鈥?/div>
800
1,050
+85
+75**
鈥?/div>
+125
鈥?/div>
鈥?/div>
鈥?/div>
Units
A
Apk
V
V
V
%Vo
%V
o
%V
o
%Vo
碌Sec
%V
o
%
kHz
kHz
擄C
擄C
擄C/W
擄C
G鈥檚
G鈥檚
Grams
0.1
鈮?/div>
I
o
鈮?/div>
2.0A
Output Voltage Tolerance
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
(with 100碌F output cap)
Efficiency
Switching Frequency
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
Mechanical Vibration
Weight
Over V
in
range, I
o
= 2.0A
T
a
= 0擄C to +60擄C
Over V
in
range
0.1
鈮?/div>
I
o
鈮?/div>
2.0A
V
in
= V
in
min
, I
o
= 2.0A
50% load change
V
o
over/undershoot
V
in
=9V, I
o
= 2.0A
Over V
in
and I
o
ranges V
o
=5V, 6.5V
V
o
=3.3V
鈥?/div>
Free Air Convection, (40-60LFM)
Over V
in
and I
o
ranges
Free Air Convection, (40-60LFM)
鈥?/div>
Per Mil-STD-883D, Method 2002.3
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
鈥?/div>
**See Thermal Derating chart.
茠
o
T
a
T
a
胃
ja
T
s
鈥?/div>
鈥?/div>
鈥?/div>
*ISR will operate down to no load with reduced specifications.
Note:
The PT78HT200 Series requires a 100碌F electrolytic or tantalum output capacitor for proper operation in all applications.
16
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
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