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PT3303

更新时间： 2024-02-27 20:46:29
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关
页数 文件大小 规格书
4页 252K
描述
30 WATT POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

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PT3303 技术参数

生命周期：Transferred包装说明：SIP-19
Reach Compliance Code：unknown风险等级：5.84
模拟集成电路 - 其他类型：SWITCHING REGULATOR最大输入电压：60 V
最小输入电压：20 V标称输入电压：24 V
JESD-30 代码：R-XSMA-T19功能数量：1
端子数量：19最高工作温度：65 °C
最低工作温度：-20 °C封装主体材料：UNSPECIFIED
封装形状：RECTANGULAR封装形式：MICROELECTRONIC ASSEMBLY
认证状态：Not Qualified表面贴装：NO
温度等级：COMMERCIAL端子形式：THROUGH-HOLE
端子位置：SINGLE

PT3303 数据手册

 浏览型号PT3303的Datasheet PDF文件第1页浏览型号PT3303的Datasheet PDF文件第2页浏览型号PT3303的Datasheet PDF文件第4页 
For assistance or to order, call (800) 531-5782  
PT3300 Series  
A p p l i c a t i o n  
N o t e s  
More Applcation Notes  
Adjusting the Output Voltage of the  
PT3300 Wide Input Range Switching Regulator  
The values of (R1) [adjust down], and R2 [adjust up], can also be  
calculated using the following formulae.  
Ro (Vo – 1)(Va – 1)  
The output voltage of the Power Trends PT3300 Series ISRs  
may be adjusted over a ±10% range from the factory trimmed  
pre-set voltage. This is accomplished with the addition of a  
single external resistor. Table 1 accordingly gives the allowable  
adjustment range for each model in the series as Va (min) and  
Va (max).  
(R1)  
R2  
=
=
- 0.48  
kΩ  
kΩ  
pt(5V04–0V  
o
a)  
Ro (Vo – 1)  
Va - Vo  
- 0.48  
Where:  
Vo = Original output voltage  
Va = Adjustd output voltage  
Ro = The value in Table 1  
Adjust Up:  
An increase in the output voltage is obtained by  
adding a resistor R2, between pin 3 (Vo adjust) and pins 10-13  
(Vo GND)  
Adjust Down: Add a resistor (R1), between pin 3 (Vo adjust)  
and pins 14-17 (Vout).  
Table 2  
PT3300 ADJUSTMENT RESISTOR VALUES  
Series Pt #  
Current  
Vo(nom)  
PT3301  
8Adc  
3.3Vdc  
PT3302  
6Adc  
5.0Vdc  
PT3303  
2.5Adc  
12.0Vdc  
PT3304  
2Adc  
15.0Vdc  
Refer to Figure 1 and Table 2 for both the placement and value  
of the required resistor, either (R1) or R2 as appropriate.  
Va(req’d)  
Notes:  
3.0  
3.1  
(363.0)kΩ  
(572.0)kΩ  
(1200.0)kΩ  
1. Use only a single 1% resistor in either the (R1) or R2 loca-  
tion. Place the resistor as close to the ISR as possible.  
3.2  
3.3  
3.4  
545.0kΩ  
272.0kΩ  
181.0kΩ  
2. Never connect capacitors from Vo adjust to either GND or  
Vout . Any capacitance added to the Vo adjust pin will affect  
the stability of the ISR.  
3.5  
3.6  
4.5  
(383.0)kΩ  
(493.0)kΩ  
(675.0)kΩ  
(1040.0)kΩ  
(2140.0)kΩ  
3. Vin GND and Vo GND are connected internally and may  
be treated as common on the PT3300 ISR series.  
4.6  
4.7  
4.8  
4. If the Remote Sense feature is being used, connecting the  
resistor (R1) between pin 3 (Vo adjust) and pin 19 (Remote  
Sense) can benifit load regulation.  
4.9  
5.0  
5.1  
548.0kΩ  
274.0kΩ  
182.0kΩ  
137.0kΩ  
109.0kΩ  
5. Adjusting Vout higher than that defined for the model raises  
the minimum input voltage by the same percentage.  
5.2  
5.3  
5.4  
Figure 1  
5.5  
10.8  
11.0  
11.2  
11.4  
11.6  
12.0  
12.2  
12.4  
12.6  
12.8  
13.0  
13.2  
13.5  
14.0  
14.5  
15.0  
15.5  
16.0  
16.5  
(448.0)kΩ  
(548.0)kΩ  
(699.0)kΩ  
(951.0)kΩ  
(1450.0)kΩ  
19  
Vo(Sense)  
7,8,9  
14 - 17  
Vin  
Vo  
Vin  
PT3300  
Vout  
INH  
Vin GND  
4, 5,  
Vo GND  
10  
Vo(adj)  
2
6
-
13  
3
(R1)  
Adj Down  
L
O
A
D
C in  
100  
100V  
+
+
µ
F,  
C out  
330  
274.0kΩ  
137.0kΩ  
91.0kΩ  
68.1kΩ  
54.4kΩ  
45.3kΩ  
µ
F
(Optional)  
R2  
Adjust Up  
COM  
COM  
Table 1  
(425.0)kΩ  
(664.0)kΩ  
(1379.0)kΩ  
PT3300 ADJUSTMENT AND FORMULA PARAMETERS  
Series Pt #  
PT3301  
PT3302  
PT3303  
PT3304  
V
V
V
(nom)  
(min)  
(max)  
(kΩ)  
3.3V  
3.0V  
3.6V  
23.7  
5.5V  
4.5V  
5.5V  
13.7  
12.0V  
10.8V  
13.2V  
4.99  
15.0V  
13.5V  
16.5Vs  
3.65  
o
a
a
102.0kΩ  
50.6kΩ  
33.6kΩ  
R
o
R1 = (Red)  
R2 = Black  
3
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com  
1234

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