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參數(shù)資料
| 型號： | SP6680 |
| 英文描述： | High Efficiency Charge Pump Regulator(高效電荷泵穩(wěn)壓器) |
| 中文描述： | 高效電荷泵穩(wěn)壓器（高效電荷泵穩(wěn)壓器） |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 176K |
| 代理商： | SP6680 |
8
Rev. 1/29/01
SP6680 High Efficiency Buck/Boost Charge Pump Regulator Copyright 2001 Sipex Corporation
Table 3. Output Resistance vs Output Capacitance
All Ceramic Capacitors ESR < 0.05ohm
Cin, CF1, CF2 = 2.2uF, Vin = 3.85V, Iout = 5mA, CLK = 32kHz
Cout (uF)
0.47
1
2.2
4.7
10
22
SP6680 Rout (ohms)
57
28
18
13
11
10
Table 4. Output Resistance vs Pump Capacitance
All Ceramic Capacitors ESR < 0.05ohm
Cin, Cout = 2.2uF, Vin = 3.85V, Iout = 5mA, CLK = 32kHz
CF1, CF2 (uF)
0.47
1
2.2
4.7
10
22
SP6680 Rout (ohms)
39
24
18
15
14
13
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1
Board Layout
PC board layout is an important design consideration to mitigate switching current effects. High
frequency operation makes PC layout important for minimizing ground bounc and noise. Components
should be place as close to the IC as possible with connections made through short, low impedance
traces. To maximize output ripple voltage, use a ground plane and solder the IC's GND pin directly to
the ground plane.
Output Resistance with Various Output and Pump Capacitors
From Tables 3 & 4 it can be seen that increasing output capacitance alone reduces the output resistance
more than increasing pump capacitance. This offers the advantage of increasing one capacitor versus
two capacitors in the case for the pump capacitance.
Figure 2. Suggested Low ESR Cermic Surface Mount Capacitors.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6681 | High Efficiency Boost Charge Pump Regulator |
| SP6681EU | High Efficiency Boost Charge Pump Regulator |
| SP6682 | High Efficiency Charge Pump Regulator for White LEDs |
| SP6682ER | High Efficiency Charge Pump Regulator for White LEDs |
| SP6682EU | High Efficiency Charge Pump Regulator for White LEDs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6680EB | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6680EU | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6680EU/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency Buck/Boost Charge Pump Regulator |
| SP6680EU-L | 制造商:Exar Corporation 功能描述:REG BUCK/BOOST CHARGE PUMP 6680 |
| SP6680TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency Buck/Boost Charge Pump Regulator |
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