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參數(shù)資料
| 型號： | TPS60310DGSG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.08 A SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | GREEN, PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 9/24頁 |
| 文件大?。?/td> | 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
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output filter design (continued)
OUT1
5
+
C(OUT1)
1
F
OUT2
6
C(OUT2)
1
F
10
PG
VIN
3
CIN
1
F
1
SNOOZE
GND
9
TPS60312
7
8
C2F
1
F
C2+
C2–
C1+
C1–
C1F
1
F
4
2
CPG
0.1
F
1.5 V
MSP430
Display
Amplifier
Sensor
R1
1 M
ON
+
Figure 25. Application With MSP430; PG as Supply for Analog Circuits
power dissipation
As given in the data sheet, the thermal resistance of the unsoldered package is RθJA = 294°C/W. Soldered on
the EVM, a typical thermal resistance of RθJA(EVM) = 200°C/W was measured.
The thermal resistance can be calculated using equation 4.
RθJA +
T
J–TA
P
D
(4)
Where:
TJ is the junction temperature.
TA is the ambient temperature.
PD is the power that needs to be dissipated by the device.
The maximum power dissipation can be calculated using equation 5.
PD = VIN × IIN – VO × IO = VIN(max) × (3 × IO + I(SUPPLY)) – VO × IO
(5)
The maximum power dissipation happens with maximum input voltage and maximum output current:
At maximum load the supply current is approximately 2 mA.
PD = 1.8 V × (3 × 20 mA + 2 mA) – 3.3 V × 20 mA = 46 mW
(6)
With this maximum rating and the thermal resistance of the device on the EVM, the maximum temperature rise
above ambient temperature can be calculated using equation 7.
TJ = RθJA × PD = 200°C/W × 46 mW = 10°C
(7)
This means that internal dissipation increases TJ by 10°C.
The junction temperature of the device must not exceed 125
°C.
This means the IC can easily be used at ambient temperatures up to:
TA = TJ(max) – TJ = 125°C – 10°C = 115°C
(8)
layout and board space
All capacitors should be soldered as close as possible to the IC. A PCB layout proposal for a two-layer board
is shown in Figure 26. Care has been taken to connect all capacitors as close as possible to the circuit to achieve
optimized output voltage ripple performance. The bottom layer is not shown in Figure 26. It only consists of a
ground-plane with a single track between the two vias that can be seen in the left part of the top layer.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS60310DGSR | 功能描述:電荷泵 SnglCell-3.3V 20-mA Dual Out 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 |
| TPS60310DGSRG4 | 功能描述:電荷泵 SnglCell-3.3V 20-mA Dual Out 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 |
| TPS60311 | 制造商:TI 制造商全稱: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:電荷泵 SnglCell-3V 20mA Dual Out 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 |
| TPS60311DGSG4 | 功能描述:電荷泵 SnglCell-3V 20mA Dual Out 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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