參數(shù)資料
型號： 78ST212SERIES
廠商： Texas Instruments, Inc.
元件分類： 基準電壓源/電流源
英文描述： Isolated Flyback Switching Regulator with 9V Output
中文描述： 隔離反激式開關(guān)穩(wěn)壓9V輸出
文件頁數(shù)： 1/3頁
文件大小： 187K
代理商： 78ST212SERIES
For assistance or to order, call
(800) 531-5782
7 8 S T 2 1 2
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
12V 2 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
S e r i e s
Standard Application
C
1
= Optional 1μF ceramic
C
2
= Required 100μF electrolytic
Pin-Out Information
Pin
1
2
3
Function
V
in
GND
V
out
Ordering Information
78ST2 C
78ST212
C2
+
Vout
GND
GND
Vin
C1
1
2
3
High Efficiency > 87%
Wide Input Range
Aluminum Heatsink for
Applications with Airflow
Self-Contained Inductor
Short Circuit Protection
Over-Temperature Protection
The 78ST212 is a series of wide
input voltage, 3-terminal Integrated
Switching Regulators (ISRs). With a
surge capability of 3A and an output
voltage that is laser trimmed, it is ideal
for inductive load applications such as
disk drive motors.
XX
Y
Output Voltage
12
= 12.0 Volts
Package Suffix
V
= Vertical Mount
H
= Horizontal Mount
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
78ST212 SERIES
Min
Symbols
Conditions
Typ
Max
Units
I
o
Over V
range
With forced air cooling
0.1
≤
I
o
≤
2.0A
Over V
range, I
o
= 2.0A
T
a
= 0°C to +55°C
Over V
in
range
0.1
≤
I
o
≤
2.0A
V
in
=17V, I
o
=2.0A, V
o
=12V
50% load change
V
o
over/undershoot
V
in
=17V, I
o
=2.0A
Over V
in
and I
o
ranges
—
0.1*
—
2.0
A
Input Voltage Range
Output Voltage Tolerance
V
in
V
o
14.5
—
28
V
—
±1.0
±2.0
%Vo
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
(with 100μF output cap)
Efficiency
Switching Frequency
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
Mechanical Vibration
Reg
line
Reg
load
V
n
t
tr
—
—
—
—
—
—
0.95
-40
±0.4
±0.2
1.0
100
3.0
87
1.0
—
±0.8
±0.4
—
—
—
—
1.05
+65
%V
o
%V
o
%V
o
μSec
%V
o
%
MHz
°C
η
o
T
a
T
a
Free Air Convection, (40-60LFM)
at V
in
= 24V, I
o
=2A
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
—
-40
—
+55**
°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.
**See Thermal Derating chart.
Note:
The 78ST212 Series requires a 100μF electrolytic or tantalum output capacitor for proper operation in all applications.
Revised 6/30/98
(For dimensions and PC board
layout see Package Style 600.)
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78ST212VC 功能描述:DC/DC轉(zhuǎn)換器 12Vout 2Amp 24V-In put Pos Step-Dwn 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）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
78ST233 制造商:TI 制造商全稱:Texas Instruments 功能描述:2 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR
78ST233HC 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3.3Vout 2A Wide Inp Pos Step-Down ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
78ST233SC 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3.3Vout 2A Wide Inp Pos Step-Down ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
78ST233VC 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3.3Vout 2A Wide Inp Pos Step-Down ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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