參數(shù)資料
型號(hào)： PT78ST174S
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 抗輻射高效，5安培開關(guān)穩(wěn)壓器
文件頁數(shù)： 1/7頁
文件大?。?/td> 174K
代理商： PT78ST174S
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Standard Application
C1 = Optional 1μF ceramic
C2
= Required 100μF electrolytic
Pin-Out Information
Pin
1
2
3
Function
V
in
GND
V
out
Ordering Information
PT78ST1
XX
Y
33
= 3.3 Volts
36
= 3.6 Volts
05
= 5.0 Volts
51
= 5.1 Volts
53
= 5.25 Volts
06
= 6.0 Volts
65
= 6.5 Volts
07
= 7.0 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
Fast Transient Response
Wide Input Range
The PT78ST100 is a series of wide-
input range, 3-terminal regulators.
These ISRs have a maximum output current
of 1.5 Amps and an output voltage that is laser
trimmed to a variety of industry standard volt-
ages.
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.
PT78ST100 Series
Output Voltage
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
Short Circuit Current
Input Voltage Range
PT78ST100 SERIES
Min
0.1*
—
9
9
16
Symbols
I
o
I
sc
V
in
Conditions
Over V
in
range
V
in
= V
in
min
0.1
≤
I
o
≤
1.5A
Typ
—
3.5
—
—
—
Max
1.5
—
26
38
38
Units
A
Apk
V
V
V
V
o
= 3.3V
V
o
= 5V
V
o
= 12V
Output Voltage Tolerance
V
o
Over V
range, I
o
=1.5A
T
a
= 0°C to +60°C
Over V
in
range
0.1
≤
I
o
≤
1.5A
V
in
= 9V, I
o
= 1.5A
V
in
= 16V, I
o
= 1.5A
50% load change
V
o
over/undershoot
V
in
= 10V, I
o
= 1A
V
in
= 10V, I
o
= 1A
V
in
= 17V, I
o
= 1A
Over V
in
range, I
o
=1.5A
—
—
±1.0
±2.0
%Vo
Line Regulation
Load Regulation
Reg
line
Reg
load
V
n
—
—
±0.2
±0.1
±0.4
±0.2
%Vo
%Vo
mV
pp
mV
pp
μSec
%Vo
%
%
%
kHz
V
o
Ripple/Noise
V
o
= 5V
V
o
= 12V
—
65
90
100
5
80
85
90
650
—
Transient Response
(with 100μF output cap)
Efficiency
t
tr
—
—
—
—
—
600
—
—
—
—
—
700
η
V
o
= 3.3V
V
o
= 5V
V
o
= 12V
Switching Frequency
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
Mechanical Vibration
o
T
a
-40
—
+85
°C
T
a
Free Air Convection, (40-60LFM)
At V
in
= 24V, I
o
=1.0A
Free Air Convection, (40-60LFM)
—
Per Mil-STD-883D, Method 2002.3
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
—
**See Thermal Derating chart.
-40
—
+80**
°
C
θ
ja
T
s
—
—
—
-40
—
45
—
500
—
+125
—
—
°C/W
°C
G’s
—
5
G’s
Weight
*ISR will operate down to no load with reduced specifications.
Note:
The PT78ST100 Series requires a 100μF electrolytic or tantalum output capacitor for proper operation in all applications.
—
—
6.5
—
grams
PT78ST100
C2
+
Vout
COM
COM
Vin
C1
1
2
3
Pkg Style 500
SLTS059A
(Revised 6/30/2000)
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