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參數(shù)資料
| 型號： | PT78VR103H |
| 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)： | 1/3頁 |
| 文件大小： | 218K |
| 代理商： | PT78VR103H |
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
14
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
PT78NR100 S e r i e s
Standard Application
C1 = Required 100μF electrolytic
C2
= Required 100μF electrolytic
Ordering Information
PT78NR1
Pin-Out Information
Pin
Function
1
+V
i
n
2
-V
out
3
GND
Negative output from positive input
Wide Input Range
Self-Contained Inductor
Short Circuit Protection
Over-Temperature Protection
Fast Transient Response
The PT78NR100 Series creates a
negative output voltage from a positive
input voltage greater than 7V. These
easy-to-use, 3-terminal, Integrated
Switching Regulators (ISRs) have
maximum output power of 5 watts and
a negative output voltage that is laser
trimmed. They also have excellent line
and load regulation.
1 AMP PLUS TO MINUS VOLTAGE
INTEGRATED SWITCHING REGULATOR
PT78NR100
+
-Vout
COM
COM
Vin
1
3
2
C2
C1
+
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
PT78NR100 SERIES
Min
0.05*
0.05*
0.05*
0.05*
—
—
—
7
7
7
7
Symbols
I
o
Conditions
Over V
in
range
Typ
—
—
—
—
4
×
I
max
4
0.5
—
—
—
—
Max
1.00
0.55
0.40
0.30
—
—
—
25
21
18
15
Units
A
A
A
A
Apk
A
mSec
V
V
V
V
V
o
=-5V
V
o
=-7, -8, -9V
V
o
=-12V
V
o
=-15V
Short Circuit Current
Inrush Current
I
sc
I
ir
t
ir
V
in
V
in
=10V
V
=10V
On start-up
0.1
≤
I
o
≤
I
max
Input Voltage Range
V
o
=-5V
V
o
=-7, -8, -9V
V
o
=-12V
V
o
=-15V
Output Voltage Tolerance
V
o
Over V
range
T
a
=-20°C to +70°C
Over V
in
range
0.1
≤
I
o
≤
I
max
V
in
=10V, I
o
=I
max
50% load change
V
o
over/undershoot
V
in
=10V, I
o
=0.5
×
I
max,
V
o
= -5V
Over V
in
and I
o
ranges
Free Air Convection, (40-60LFM)
Over V
in
and I
o
Ranges
Free Air Convection, (40-60LFM)
Over V
in
and I
o
Ranges
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
—
—
±1.0
±3.0
%V
o
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
(with 100μF output cap)
Efficiency
Switching Frequency
Absolute Maximum
Operating Temperaturte Range
Recommended Operating
Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
Mechanical Vibration
Reg
line
Reg
load
V
n
t
tr
—
—
—
—
—
—
600
±0.5
±0.5
±2
100
5.0
75
650
±1.0
±1.0
—
250
—
—
700
%V
o
%V
o
%V
o
μSec
%V
o
%
kHz
η
o
T
a
-40
—
+85
°C
T
a
-40
—
+60**
°C
θ
ja
T
s
—
—
—
-40
—
45
—
500
—
+125
—
—
°C/W
°C
G’s
—
5
G’s
Weight
—
—
6.5
Grams
*ISR will operate down to no load with reduced specifications.
Note:
The PT78NR100 Series requires a 100μF electrolytic or tantalum output capacitor for proper operation in all applications.
**See Thermal Derating chart.
Package Suffix
V
= Vertical Mount
S
= Surface Mount
H
= Horizontal
Mount
XX
Y
Output Voltage
03
= -3.0 Volts
05
= -5.0 Volts
52
= -5.2 Volts
07
= -7.0 Volts
08
= -8.0 Volts
09
= -9.0 Volts
12
= -12.0 Volts
15
= -15.0 Volts
Pkg Style 500
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