參數資料
型號： 78ST212VC
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源模塊
英文描述： 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝： SIP-3
文件頁數： 1/3頁
文件大?。?/td> 199K
代理商： 78ST212VC
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
12V 2 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
78ST212
Series
Standard Application
C1 = Optional 1F ceramic
C2 = Required 100F electrolytic
Pin-Out Information
Pin
Function
1
Vin
2
GND
3
Vout
Ordering Information
78ST2
C
78ST212
C2
+
Vout
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
78ST212 SERIES
(T
a = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
0.1*
—
2.0
A
With forced air cooling
Input Voltage Range
Vin
0.1
≤ Io ≤ 2.0A
14.5
—
28
V
Output Voltage Tolerance
Vo
Over Vin range, Io= 2.0A
—
±1.0
±2.0
%Vo
Ta= 0°C to +55°C
Line Regulation
Regline
Over Vin range
—
±0.4
±0.8
%Vo
Load Regulation
Regload
0.1
≤ Io ≤ 2.0A
—
±0.2
±0.4
%Vo
Vo Ripple/Noise
Vn
Vin=17V, Io=2.0A, Vo=12V
—
1.0
—
%Vo
Transient Response
ttr
50% load change
—
100
—
Sec
(with 100F output cap)
Vo over/undershoot
—
3.0
—
%Vo
Efficiency
η
Vin=17V, Io=2.0A
—
87
—
%
Switching Frequency
o
Over Vin and Io ranges
0.95
1.0
1.05
MHz
Absolute Maximum
Ta
—
-40
—
+65
°C
Operating Temperature Range
Recommended Operating
Ta
Free Air Convection, (40-60LFM)
-40
—
+55**
°C
Temperature Range
at Vin= 24V, Io=2A
Thermal Resistance
θja
Free Air Convection, (40-60LFM)
—
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 78ST212 Series requires a 100F 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.)
相關PDF資料
PDF描述
78ST212HC 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
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相關代理商/技術參數
參數描述
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
78ST235 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.45Vout 2A Wide Input Positive Step-Down ISR
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