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| 型号： | TPS60204DGSG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 5/18页 |
| 文件大小： | 405K |
| 代理商： | TPS60204DGSG4 |
TPS60204, TPS60205
REGULATED 3.3V, 100mA LOW RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS354A FEBRUARY 2001 REVISED SEPTEMBER 2001
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
capacitor selection
The TPS6020x devices require only four external capacitors to achieve a very low output voltage ripple. The
capacitor values are closely linked to the required output current. Low ESR (<0.1
) capacitors should be used
at input and output. In general, the transfer capacitors (C1 and C2) will be the smallest; a 1-
F value is
recommended for maximum load operation. With smaller capacitor values, the maximum possible load current
is reduced and the LinSkip threshold is lowered.
The input capacitor improves system efficiency by reducing the input impedance. It also stabilizes the input
current of the power source. The input capacitor should be chosen according to the power supply used and the
distance from the power source to the converter IC. Ci is recommended to be about two to four times as large
as the flying capacitors C1 and C2.
The output capacitor (Co) should be at minimum the size of the input capacitor. The minimum required
capacitance is 2.2
F. Larger values will improve the load transient performance and will reduce the maximum
output ripple voltage.
Only ceramic capacitors are recommended for input, output, and flying capacitors. Depending on the material
used to manufacture them, ceramic capacitors might lose their capacitance over temperature and voltage.
Ceramic capacitors of type X7R or X5R material will keep their capacitance over temperature and voltage,
whereas Z5U- or Y5V-type capacitors will decrease in capacitance. Table 2 lists the recommended capacitor
values.
Table 2. Recommended Capacitor Values (Ceramic X5R and X7R)
LOAD CURRENT,
IL
(mA)
FLYING
CAPACITORS,
C1/C2
(
F)
INPUT
CAPACITOR,
Ci
(
F)
OUTPUT
CAPACITOR,
Co
(
F)
OUTPUT VOLTAGE
RIPPLE IN LINEAR MODE,
V(P-P)
(mV)
OUTPUT VOLTAGE
RIPPLE IN SKIP MODE,
V(P-P)
(mV)
0100
1
2.2
3
20
0100
1
4.7
3
10
0100
1
2.2
10
3
7
0100
2.2
4.7
3
10
050
0.47
2.2
3
20
025
0.22
2.2
5
15
010
0.1
2.2
5
15
Table 3. Recommended Capacitor Types
MANUFACTURER
PART NUMBER
SIZE
CAPACITANCE
TYPE
Taiyo Yuden
UMK212BJ104MG
0805
0.1
F
Ceramic
Taiyo Yuden
EMK212BJ224MG
0805
0.22
F
Ceramic
EMK212BJ474MG
0805
0.47
F
Ceramic
LMK212BJ105KG
0805
1
F
Ceramic
LMK212BJ225MG
0805
2.2
F
Ceramic
EMK316BJ225KL
1206
2.2
F
Ceramic
LMK316BJ475KL
1206
4.7
F
Ceramic
JMK316BJ106ML
1206
10
F
Ceramic
AVX
0805ZC105KAT2A
0805
1
F
Ceramic
AVX
1206ZC225KAT2A
1206
2.2
F
Ceramic
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相关代理商/技术参数 |
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| TPS60204DGSR | 功能描述:电荷泵 Regulated 3.3-V Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60204DGSRG4 | 功能描述:电荷泵 Regulated 3.3-V Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60205 | 制造商:TI 制造商全称:Texas Instruments 功能描述:REGULATED 3.3-V, 100-mA LOW-RIPPLE CHARGE PUMP LOW POWER DC/DC CONVERTERS |
| TPS60205DGS | 功能描述:电荷泵 Regulated 3.3-V Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60205DGSG4 | 功能描述:电荷泵 Regulated 3.3-V Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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