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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)： | 9/12頁 |
| 文件大?。?/td> | 176K |
| 代理商： | SP6680 |
9
Rev. 1/29/01
SP6680 High Efficiency Buck/Boost Charge Pump Regulator Copyright 2001 Sipex Corporation
I
nput Voltage Ripple with Various Input, Output and Pump Capacitors
Looking at Tables 5, 6 & 7 it can be seen that increasing the value of the input capacitor (Table 5) reduces
the input voltage ripple the most. Note that placement of this input bypass capacitor as close to the
SP6680 input is recommended. Also note that Table 7 shows that increasing the pump capacitor beyond
the values of the other capacitors (2.2uF) actually increases the input ripple voltage and is not
recommended.
Table 5. Input Voltage Ripple vs Input Capacitance
All Ceramic Capacitors ESR < 0.05ohm
Cout, CF1, CF2 = 2.2uF, Iout = 5mA, CLK = 32kHz
Vin = 3.55V (In Regulation)
Cin (uF)
Vin Ripple mV (pp)
0.47
296
1
140
2.2
80
4.7
36
10
24
22
14
Vin = 3.85V (Not in Regulation)
Vin Ripple mV (pp)
30
24
18
12
10
6
Table 6. Input Voltage Ripple vs Output Capacitance
All Ceramic Capacitors ESR < 0.05ohm
Cin, CF1, CF2 = 2.2uF, Iout = 5mA, CLK = 32kHz
Vin = 3.55V (In Regulation)
Vin Ripple mV (pp)
90
74
80
74
72
78
Vin = 3.85V (Not in Regulation)
Vin Ripple mV (pp)
30
24
18
14
12
12
Cout (uF)
0.47
1
2.2
4.7
10
22
Table 7. Input Voltage Ripple vs Pump Capacitance
All Ceramic Capacitors ESR < 0.05ohm
Cin, Cout = 2.2uF, Iout = 5mA, CLK = 32kHz
Vin = 3.55V (In Regulation)
Vin Ripple mV (pp)
76
76
80
154
162
162
Vin = 3.85V (Not in Regulation)
Vin Ripple mV (pp)
26
20
18
16
16
14
CF1, CF2 (uF)
0.47
1
2.2
4.7
10
22
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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