參數(shù)資料
型號(hào)： PT78NR252H
廠商： Texas Instruments, Inc.
元件分類： 開關(guān)穩(wěn)壓
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)： 1/2頁
文件大?。?/td> 62K
代理商： PT78NR252H
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT78NR200 Series
Standard Application
C1 = Required 100F electrolytic
C2 = Required 100F electrolytic
Ordering Information
PT78NR2
Pin-Out Information
Pin
Function
1+Vin
2-Vout
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
Vin
1
3
2
C2
C1
+
Specifications
Characteristics
PT78NR200 SERIES
(T
a= 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo= -5.2V
0.1*
—
2.0
A
Vo= -12.0V
0.1*
—
1.0
A
Short Circuit Current
Isc
Vin=10V
—
4
×Imax
—
Apk
Inrush Current
Iir
Vin=10V
—
4
—
A
tir
On start-up
—
0.5
—
mSec
Input Voltage Range
Vin
0.1
≤ Io ≤ Imax
9—
15
V
Output Voltage Tolerance
Vo
Over Vin range
—
±1.0
±3.0
%Vo
Ta= 0°C to +70°C
Line Regulation
Regline
Over Vin range
—
±0.5
±1.0
%Vo
Load Regulation
Regload
0.3
≤ Io ≤ Imax
—
±0.5
±1.0
%Vo
Vo Ripple/Noise
Vn
Vin=10V, Io=Imax
—±2
—
%Vo
Transient Response
ttr
50% load change
—
100
250
Sec
(with 100F output cap)
Vo over/undershoot
—
5.0
—
%Vo
Efficiency
η
Vin=9V, Io=0.5×Imax, Vo=-12V
—
78
—
%
Switching Frequency
o
Over Vin and Io ranges600
650
700
kHz
Absolute Maximum
Ta
100 LFM airflow
0—
+85
°C
Operating Temperaturte Range
Over Vin and Io Ranges
Recommended Operating
Ta
100 LFM airflow
0
—
+60**
°C
Temperature Range
Over Vin and Io Ranges
Thermal Resistance
θ
ja
100 LFM airflow
—
35
—
°C/W
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
—
Per Mil-STD-883D, Method 2002.3
—
500
—
G’s
Mechanical Vibration
—
Per Mil-STD-883D, Method 2007.2,
—10
—
G’s
20-2000 Hz, soldered in a PC board
Weight
—
11
Grams
*ISR will operate down to no load with reduced specifications.
**See Thermal Derating chart.
Note: The PT78NR200 series requires a 100F electrolytic or tantalum output capacitor for proper operation in all applications.
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.)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
PT78SR105V 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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