- 您现在的位置：买卖IC网 > PDF目录220081 > TDA3608TH/N3C,518 (NXP SEMICONDUCTORS) SPECIALTY ANALOG CIRCUIT, PDSO20 PDF资料下载
参数资料
| 型号： | TDA3608TH/N3C,518 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封装： | PLASTIC, HSOP-20 |
| 文件页数： | 7/22页 |
| 文件大小： | 122K |
| 代理商： | TDA3608TH/N3C,518 |
2003 Nov 28
15
Philips Semiconductors
Product specication
Multiple voltage regulators with switch
TDA3608Q; TDA3608TH
Application information
NOISE
The noise on the supply line depends on the value of the
supply capacitor and is caused by a current noise (the
output noise of the regulators is translated into a current
noise by means of the output capacitors). Table 1 shows
the noise figure with the corresponding output capacitor Co
for each regulator. The noise is minimal when a high
frequency capacitor of 220 nF in parallel with an
electrolytic capacitor of 100
F is connected directly to
pins VP and GND.
Table 1
Noise gure; note 1
Note
1. Measured at a bandwidth of 200 kHz.
STABILITY
The regulators are made stable with the externally
connected output capacitors. The output capacitors can be
selected using the graphs of Figs 13 and 14. When an
electrolytic capacitor is used, the temperature behaviour of
this output capacitor can cause oscillations at low
temperature. The next two examples show how an output
capacitor value is selected.
Example 1
The regulator 1 is made stable with an electrolytic output
capacitor of 220
F with ESR = 0.15 . At Tamb = 30 °C
the capacitor value is decreased to 73
F and the ESR is
increased to 1.1
. The regulator remains stable at
Tamb = 30 °C (see Fig.13).
Example 2
The regulator 2 is made stable with an electrolytic
capacitor of 10
F with ESR = 3 . At Tamb = 30 °C the
capacitor value is decreased to 3
F and the ESR is
increased to 23.1
. The regulator will be instable at
Tamb = 30 °C (see Fig.14).
Solution
Use a tantalum capacitor of 10
F or a larger electrolytic
capacitor. The use of tantalum capacitors is recommended
to avoid problems with stability at low temperatures.
REGULATOR
NOISE FIGURE (
V)
Co =10 FCo =47 FCo = 100 F
1
225
150
135
2
225
150
135
3
255
200
180
handbook, halfpage
1
0
110
C (
F)
MBK100
2
3
4
stable region
maximum ESR
minimum ESR
100
R
(
)
Fig.13 Curves for selecting value of output
capacitor for regulator 1 and regulator 3.
handbook, halfpage
2
0
0.22
110
C (
F)
MBK099
4
6
8
10
12
stable region
maximum ESR
minimum ESR
100
R
(
)
14
Fig.14 Curves for selecting value of output
capacitor for regulator 2.
相关PDF资料 |
PDF描述 |
|---|---|
| TC241-21 | SPECIALTY ANALOG CIRCUIT, CDIP22 |
| TMP-5/5-15/1-D48-C | 3-OUTPUT 40 W DC-DC REG PWR SUPPLY MODULE |
| TPS61071DDCT | 0.7 A BATTERY CHARGE CONTROLLER, 1440 kHz SWITCHING FREQ-MAX, PDSO6 |
| TPS65124RGT | 0.2 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PQCC16 |
| TPS3306-18DGKG4 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA3608THQ | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multiple voltage regulators with switch |
| TDA3609 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multiple voltage regulator with switch and ignition buffers |
| TDA3609JR | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multiple voltage regulator with switch and ignition buffers |
| TDA3615J | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multiple voltage regulator |
| TDA3615J/N2,112 | 功能描述:线性稳压器 - 标准 CARRADIO POWER AMPLIFIERS RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
发布紧急采购，3分钟左右您将得到回复。