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參數(shù)資料
| 型號： | TPS60301DGSRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3.05 X 4.98 MM, GREEN, PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 538K |
| 代理商： | TPS60301DGSRG4 |
TPS60300, TPS60301, TPS60302, TPS60303
SINGLE-CELL TO 3.0-V/3.3-V, 20-mA DUAL OUTPUT,
HIGH-EFFICIENCY CHARGE PUMP
SLVS302A – DECEMBER 2000 – REVISED MARCH 2001
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
design procedure (continued)
Due to R(PG,1), an output filter can easily be formed with an output capacitor (CPG). Cut-off frequency is given
by:
c +
1
2
pR
(PG,1)
C
(PG)
(1)
V
(PG,1)
V
O(OUT2)
+
1
) 2pR
(PG,1)
C
(PG)
2
and ratio VOUT/VIN is:
(2)
with R(PG,1) = 15 , C(PG) = 0.1 F and f = 600 kHz (at nominal switching frequency)
V
(PG,1)
V
O(OUT2)
+ 0.175
Load current sourced by power-good output reduces maximum output current at OUT2. During start-up (power
good going high) current charging C(PG) will discharge C(OUT2). Therefore, C(PG) must not be larger than 0.1
C(OUT2) or the device will not start. By charging C(PG) through C(OUT2),the output voltage at OUT2 will decrease.
If the capacitance of C(PG) is to large, the circuit will detect power bad. The power-good output will go low and
discharge C(PG). Then the cycle starts again. Figure 22 shows a configuration with an LC-post filter to further
reduce output ripple and noise.
OUT1
5
+
C(OUT1)
1
F
OUT2
6
C(OUT2)
1
F
R1
10
PG
VIN
3
CIN
1
F
INPUT
0.9 V to 1.8 V
1
EN
OFF/ON
GND
9
TPS60300
PG
7
8
C2F
1
F
C2+
C2–
C1+
C1–
C1F
1
F
4
2
LP
CP
VP(OUT)
++
Figure 22. LC-Post Filter
Table 4. Recommended Values for Lowest Output Voltage Ripple
VIN
IO(OUT2)
CIN[F]
CXF[F]
COUT[F]
LP[H]
CP[F]
VP(OUT)
VIN
[V]
IO(OUT2)
[mA]
CERAMIC
VP(OUT)
VP–P[mV]
0.9
…1.8
20
1.0
0.1
0.1 (X7R)
16
0.9
…1.8
20
1.0
0.1
1 // 0.1 (X7R)
12
0.9
…1.8
20
1.0
0.1 (X7R)
14
0.9
…1.8
20
1.0
10
1.0
1 // 0.1 (X7R)
3
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPS60302 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SINGLE-CELL TO 3.0-V/3.3-V, 20-mA DUAL OUTPUT, HIGH-EFFICIENCY CHARGE PUMP |
| TPS60302DGS | 功能描述:電荷泵 3.0/3.3V 20mA Dual Out Hi-Eff Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TPS60302DGSG4 | 功能描述:電荷泵 Sgl-Cell-3.0V/3.3V 20mA Dual Output RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TPS60302DGSR | 功能描述:電荷泵 3.0/3.3V 20mA Dual Out Hi-Eff Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TPS60302DGSRG4 | 功能描述:電荷泵 3.0/3.3V 20mA Dual Out Hi-Eff Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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