參數(shù)資料
型號(hào)： PT78NR252
英文描述： Not recommended for new designs. For new designs, we recommend IR3081AM.
中文描述： - 5.2V。 10 - 12瓦加到負(fù)電壓ISR的
文件頁(yè)數(shù)： 1/2頁(yè)
文件大小： 59K
代理商： PT78NR252
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT78NR200 Series
Standard Application
C1 = Required 100μF electrolytic
C2
= Required 100μF electrolytic
Ordering Information
PT78NR2
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 PT78NR200 series creates
negative output voltage from a posi-
tive input voltage greater than 9V
These easy-to-use, 3-terminal, Inte-
grated Switching Regulators (ISRs)
have maximum output power of 10 to
12 watts and a negative output voltage
that is laser trimmed. They also have
excellent line and load regulation.
The PT78NR200 requires 100
LFM of airflow at its maximum
output current.
10-12W Plus to Minus Voltage
Integrated Switching Regulator
PT78NR200
+
-Vout
COM
COM
Vin
1
3
2
C2
C1
+
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
PT78NR200 SERIES
Min
0.1*
0.1*
—
—
—
9
Symbols
I
o
Conditions
Over V
in
range
Typ
—
—
4
×
I
max
4
0.5
—
Max
2.0
1.0
—
—
—
15
Units
A
A
Apk
A
mSec
V
V
o
= -5.2V
V
o
= -12.0V
Short Circuit Current
Inrush Current
I
sc
I
ir
t
ir
V
in
V
o
V
in
=10V
V
=10V
On start-up
0.1
≤
I
o
≤
I
max
Over V
range
T
a
= 0°C to +70°C
Over V
in
range
0.3
≤
I
o
≤
I
max
V
in
=10V, I
o
=I
max
50% load change
V
o
over/undershoot
V
in
=9V, I
o
=0.5
×
I
max
, V
o
=-12V
Over V
in
and I
o
ranges
100 LFM airflow
Over V
in
and I
o
Ranges
100 LFM airflow
Over V
in
and I
o
Ranges
100 LFM airflow
—
Per Mil-STD-883D, Method 2002.3
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
—
Input Voltage Range
Output Voltage Tolerance
—
±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
78
650
±1.0
±1.0
—
250
—
—
700
%V
o
%V
o
%V
o
μSec
%V
o
%
kHz
η
o
T
a
0
—
+85
°C
T
a
0
—
+60**
°C
θ
ja
T
s
—
—
—
-40
—
35
—
500
—
+125
—
—
°C/W
°C
G’s
—
10
G’s
Weight
—
—
11
Grams
*ISR will operate down to no load with reduced specifications.
Note:
The PT78NR200 series requires a 100μF electrolytic or tantalum output capacitor for proper operation in all applications.
**See Thermal Derating chart.
XX
Y
Output Voltage
52
= -5.2 Volts
06
= -6.0 Volts
12
= -12.0 Volts
15
= -15.0 Volts
Pkg Style 600
Package Suffix
H
= Horizontal Mount
S
= Surface Mount
V
= Vertical Mount
SLTS074A
(Revised 6/30/2000)
(For dimensions and PC board layout, see
Package Styles 600 and 610.)
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PT78NR252H 功能描述:DC/DC轉(zhuǎn)換器 -5.2V 10-12W + to - Voltage ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PT78NR252S 功能描述:DC/DC轉(zhuǎn)換器 -5.2V 10-12W + to - Voltage ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PT78NR252V 功能描述:DC/DC轉(zhuǎn)換器 -5.2V 10-12W + to - Voltage ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PT78SR105H 制造商:TI 制造商全稱:Texas Instruments 功能描述:-1.5 AMP NEGATIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
PT78SR105S 制造商:TI 制造商全稱:Texas Instruments 功能描述:-1.5 AMP NEGATIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
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