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PT78HT233ST PDF预览

PT78HT233ST

更新时间： 2024-11-23 13:12:35
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器放大器
页数 文件大小 规格书
3页 218K
描述
2A SWITCHING REGULATOR, 1050kHz SWITCHING FREQ-MAX, PSMA3

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PT78HT233ST 技术参数

是否Rohs认证：不符合生命周期：Obsolete
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.79
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
最大输入电压：15 V最小输入电压：9 V
标称输入电压：9 VJESD-30 代码：R-PSMA-G3
湿度敏感等级：1功能数量：1
端子数量：3最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：2 A
封装主体材料：PLASTIC/EPOXY封装形状：RECTANGULAR
封装形式：MICROELECTRONIC ASSEMBLY峰值回流温度（摄氏度）：215
认证状态：Not Qualified表面贴装：YES
切换器配置：BUCK最大切换频率：1050 kHz
技术：HYBRID温度等级：INDUSTRIAL
端子形式：GULL WING端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

PT78HT233ST 数据手册

 浏览型号PT78HT233ST的Datasheet PDF文件第2页浏览型号PT78HT233ST的Datasheet PDF文件第3页 
Application Notes  
Mechanical Outline  
For assistance or to order, call (800) 531-5782  
Product Selector Guide  
P T 7 8 H T 2 0 0 S e r i e s  
2 AMP POSITIVE STEP-DOWN  
INTEGRATED SWITCHING REGULATOR  
Revised 5/15/98  
• High Efficiency > 85%  
• Wide Input Range  
• Self-Contained Inductor  
• Short-Circuit Protection  
• Over-Temperature Protection  
• Fast Transient Response  
a maximum output current of 2.0 Amps.  
The output voltage is laser trimmed  
for high accuracy.  
These 78 series regulators have excel-  
lent line and load regulation with internal  
short-circuit and over-temperature protec-  
tion, and are offered in a variety of standard  
output voltages. These ISRs are very flex-  
ible and may be used in a wide variety of  
applications.  
This is the new generation of the  
PT78HT200 Series wide input range  
3 terminal regulators. These ISRs have  
Pin-Out Information  
Ordering Information  
PT78HT2  
XX  
Y
Pin Function  
1
2
3
V
in  
Standard Application  
GND  
Vout  
Output Voltage  
Package Suffix  
V = Vertical Mount  
S = Surface Mount  
H = Horizontal  
Mount  
33 = 3.3 Volts  
05 = 5.0 Volts  
53 = 5.25 Volts  
65 = 6.5 Volts  
Vin  
Vout  
1
3
PT78HT200  
2
+
C1  
COM  
C2  
COM  
C1 = Optional 1µF ceramic  
C2 = Required 100µF electrolytic  
Pkg Style 500  
Specifications  
PT78HT200 SERIES  
Characteristics  
(Ta = 25°C unless noted)  
Symbols  
Io  
Conditions  
Min  
0.1*  
—
Typ  
—
Max  
2.0  
Units  
A
Output Current  
Over Vin range  
Vin = Vin min  
0.1 ≥ Io ≥ 2.0A  
Short Circuit Current  
Input Voltage Range  
Isc  
6.0  
—
Apk  
Vin  
Vo=3.3V  
Vo=5V  
9
—
—
—
15  
28  
28  
V
V
V
9
Vo=6.5V  
10.5  
Output Voltage Tolerance  
∆Vo  
Over Vin range, Io = 2.0A  
Ta = 0°C to +60°C  
—
±1.0  
±2.0  
%Vo  
Line Regulation  
Load Regulation  
Vo Ripple/Noise  
Regline  
Regload  
Vn  
Over Vin range  
—
—
—
—
±0.4  
±0.2  
±1  
±0.8  
±0.4  
—
%Vo  
%Vo  
%Vo  
0.1 ≤ Io ≤ 2.0A  
Vin = Vin min, Io = 2.0A  
Transient Response  
ttr  
50% load change  
100  
5.0  
—
µSec  
%Vo  
(with 100µF output cap)  
Vo over/undershoot  
Efficiency  
η
Vin=9V, Io = 2.0A  
Vo=5V  
—
80  
—
%
Switching Frequency  
ƒo  
Over Vin and Io ranges Vo=5V, 6.5V  
Vo=3.3V  
700  
950  
750  
800  
kHz  
kHz  
1,000  
1,050  
Absolute Maximum  
Ta  
Ta  
—
-40  
—
+85  
°C  
Operating Temperature Range  
Recommended Operating  
Temperature Range  
Free Air Convection, (40-60LFM)  
Over Vin and Io ranges  
-40  
—
+75**  
°C  
Thermal Resistance  
Storage Temperature  
Mechanical Shock  
θja  
Ts  
—
—
Free Air Convection, (40-60LFM)  
—
—
40  
—
°C/W  
°C  
-40  
—
—
+125  
—
Per Mil-STD-883D, Method 2002.3  
500  
G’s  
Mechanical Vibration  
Per Mil-STD-883D, Method 2007.2,  
20-2000 Hz, soldered in a PC board  
—
—
—
5
G’s  
Weight  
—
—
6.5  
—
Grams  
*ISR will operate down to no load with reduced specifications.  
**See Thermal Derating chart.  
Note: The PT78HT200 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.  
16  
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com  
123

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