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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)： | 10/12頁 |
| 文件大?。?/td> | 176K |
| 代理商： | SP6680 |
10
Rev. 1/29/01
SP6680 High Efficiency Buck/Boost Charge Pump Regulator Copyright 2001 Sipex Corporation
Output Voltage Ripple with Various Input, Output and Pump Capacitors
From Tables 8, 9 & 10 it appears that increasing pump capacitance will reduce output voltage ripple
the most. But, as we saw previously in Table 7, input voltage ripple increases with increasing pump
capacitance and it is not recommended to use pump capacitors greater than the other capacitor values.
It is therefore recommended to use an output capacitor value equal to or slightly above the pump
capacitor value. Note that for most designs the SP6680 output will be followed by a Low Dropout
Regulator that will greatly reduce the output ripple.
Table 8. Output 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)
Vout Ripple mV (pp)
90
92
104
102
106
108
Vin = 3.85V (Not in Regulation)
Vout Ripple mV (pp)
52
52
52
52
52
52
Cin (uF)
0.47
1
2.2
4.7
10
22
Table 9. Output 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)
Vout Ripple mV (pp)
102
102
104
102
104
102
Vin = 3.85V (Not in Regulation)
Vout Ripple mV (pp)
64
58
52
46
44
44
Cout (uF)
0.47
1
2.2
4.7
10
22
Table 10. Output Voltage Ripple vs Pump Capacitance
All Ceramic Capacitors ESR < 0.05ohm
Cin, Cout = 2.2uF, Iout = 5mA, CLK = 32kHz
Vin = 3.55V (In Regulation)
Vout Ripple mV (pp)
365
172
108
90
76
40
Vin = 3.85V (Not in Regulation)
Vout Ripple mV (pp)
200
108
52
24
14
8
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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