鈥?/div>
High Efficiency > 82%
Wide Input Range
Self-Contained Inductor
Short-Circuit Protection
Over-Temperature Protection
Fast Transient Response
Revised 6/30/98
The 78ST200 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 78ST200 series regulators
have internal short-circuit and over-
temperature protection and may be
used in a wide variety of applications.
Pin-Out Information
Pin No.
Function
1
2
3
Vin
1
3
Ordering Information
78ST2
XX
Output Voltage
33
= 3.3 Volts
35
= 3.45 Volts
05
= 5.0 Volts
Y
C
Package Suffix
V
= Vertical Mount
S
= Surface Mount
H
= Horizontal
Mount
Standard Application
78ST200
2
V
i
n
GND
V
out
Vout
+
GND
C1
GND
C2
C1 = Optional 1碌F ceramic
C2 = Required 100碌F electrolytic
(For dimensions and PC board
layout see Package Style 500.)
Specifications
Characteristics
(T
a
= 25擄C unless noted)
Output Current
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
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
** See Thermal Derating chart.
78ST200 SERIES
Symbols
I
o
V
in
鈭哣
o
Reg
line
Reg
load
V
n
t
tr
畏
Conditions
Over V
in
range
I
o
= 0.1 to 3.0A
V
o
< 3.5V
V
o
= 5.0V
Over V
in
range, I
o
= 2.0A
T
a
= 0擄C to +60擄C
Min
0.1*
7
8
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
0.95
-40
Typ
鈥?/div>
鈥?/div>
鈥?/div>
鹵1.0
鹵0.4
鹵0.2
1
100
5.0
82
1.0
鈥?/div>
Max
2.0
15
20
鹵2.0
鹵0.8
鹵0.4
鈥?/div>
鈥?/div>
鈥?/div>
1.05
+85
Units
A
V
V
%Vo
%V
o
%V
o
%Vo
碌Sec
%V
o
%
MHz
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, V
o
= 5V
Over V
in
and I
o
ranges
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>
茠
o
T
a
T
a
-40
鈥?/div>
-40
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
38
鈥?/div>
500
5
7
+85**
鈥?/div>
+125
鈥?/div>
鈥?/div>
鈥?/div>
擄C
擄C/W
擄C
G鈥檚
G鈥檚
Grams
胃
ja
T
s
鈥?/div>
鈥?/div>
鈥?/div>
* ISR will operate down to no load with reduced specifications.
Note:
The 78ST200 Series requires a 100碌F electrolytic or tantalum output capacitor for proper operation in all applications.
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
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