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| 型号： | TPS60310DGSG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.08 A SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 8/24页 |
| 文件大小： | 530K |
| 代理商： | TPS60310DGSG4 |
TPS60310, TPS60311, TPS60312, TPS60313
SINGLE-CELL TO 3-V/3.3-V, 20-mA DUAL OUTPUT,
HIGH-EFFICIENCY CHARGE PUMP WITH SNOOZE MODE
SLVS362A – MAY 2001 – REVISED AUGUST 2001
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output filter design (continued)
Due to R(PG,1), an output filter can easily be formed with an output capacitor (CPG). Cutoff 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 VO/VI for the ac ripple is:
(2)
with R(PG,1) = 15 , CPG = 0.1 F, and f = 600 kHz (at nominal switching frequency)
V
(PG,1)
V
O(OUT2)
+ 0.175
(3)
Load current sourced by power-good output reduces maximum output current at OUT2. During start-up
(power-good going high) current charging CPG discharges C(OUT2). Therefore, CPG must not be larger than CPG
≤ 0.1 C(OUT2) or the device does not start. By charging CPG through C(OUT2), the output voltage at OUT2
decreases. If the capacitance of CPG is to large, the circuit detects power bad. The power-good output goes low
and discharges CPG. Then the cycle starts again. Figure 24 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
SNOOZE
ON/OFF
GND
9
TPS60310
PG
7
8
C2F
1
F
C2+
C2–
C1+
C1–
C1F
1
F
4
2
LP
CP
VP(OUT)
++
Figure 24. LC-Post Filter
Table 4. Recommended Values for Lowest Output Voltage Ripple
VIN
IO(OUT2)
CIN[F]
CXF[F]
COUT[F]
L[ H]
CP[F]
VP(OUT)
VIN
[V]
IO(OUT2)
[mA]
CIN[F]
CERAMIC
CXF[F]
CERAMIC
COUT[F]
CERAMIC
LP[H]
CP[F]
CERAMIC
VP(OUT)
VP–P[mV]
0.9
…1.8
20
1
0.1
0.1 (X7R)
16
0.9
…1.8
20
1
0.1
1 // 0.1 (X7R)
12
0.9
…1.8
20
1
0.1 (X7R)
14
0.9
…1.8
20
1
1 // 0.1 (X7R)
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS60310DGSR | 功能描述:电荷泵 SnglCell-3.3V 20-mA Dual Out 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 |
| TPS60310DGSRG4 | 功能描述:电荷泵 SnglCell-3.3V 20-mA Dual Out 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 |
| TPS60311 | 制造商:TI 制造商全称:Texas Instruments 功能描述:SINGLE-CELL TO 3-V/3.3-V, 20-mA DUAL OUTPUT,HIGH-EFFICIENCY CHARGE PUMP WITH SNOOZE MODE |
| TPS60311DGS | 功能描述:电荷泵 SnglCell-3V 20mA Dual Out 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 |
| TPS60311DGSG4 | 功能描述:电荷泵 SnglCell-3V 20mA Dual Out 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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