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| 型号： | TPS60101PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.1 A SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 11/26页 |
| 文件大小： | 840K |
| 代理商： | TPS60101PWPRG4 |
TPS60101
REGULATED 3.3V 100mA LOW NOISE
CHARGE PUMP DC/DC CONVERTER
SLVS214A JUNE 1999 REVISED SEPTEMBER 1999
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
applications proposals
TPS60101 with LC output filter for ultra low ripple
For applications where extremely low output ripple is required, a small LC filter is recommended. This is shown
in Figure 34. The addition of a small inductor and filter capacitor will reduce the output ripple well below what
could be achieved with capacitors alone. The corner frequency of 500 kHz was chosen above the 300 kHz
switching frequency to avoid loop stability issues in case the feedback is taken from the output of the LC filter.
Leaving the feedback (FB) connection point before the LC filter, the filter capacitance value can be increased
to achieve even higher ripple attenuation without affecting stability margin.
IN
C1+
C1
ENABLE
OUT
FB
C2+
C2
SYNC
SKIP COM 3V8
PGND GND
INPUT
1.8 V to 3.6 V
CIN
4.7
F
OUTPUT
3.3 V 100 mA
CO = 22 F
C2F
1
F
C1F
1
F
+
OFF/ON
TPS60101
+
1
F
+
0.1
H
Figure 34. TPS60101 With LC Filter for Ultra Low Output Ripple Applications
related information
application reports
For more application information see:
D PowerPAD Application Report (Literature Number: SLMA002)
D TPS6010x/TPS6011x Charge Pump Application Report (Literature Number: SLVA070)
device family products
Other devices in this family are:
PART NUMBER
LITERATURE
NUMBER
DESCRIPTION
TPS60100
SLVS213
Regulated 3.3-V, 200-mA Low-Noise Charge Pump DC/DC Converter
TPS60110
SLVS215
Regulated 5-V, 300-mA Low-Noise Charge Pump DC/DC Converter
TPS60111
SLVS216
Regulated 5-V, 150-mA Low-Noise Charge Pump DC/DC Converter
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