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参数资料
| 型号： | TPS60300DGSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 3.05 X 4.98 MM, GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 9/24页 |
| 文件大小： | 538K |
| 代理商： | TPS60300DGSR |
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
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
design procedure (continued)
OUT1
5
+
C(OUT1)
1
F
OUT2
6
C(OUT2)
1
F
10
PG
VIN
3
CIN
1
F
1
EN
GND
9
TPS60302
7
8
C2F
1
F
C2+
C2–
C1+
C1–
C1F
1
F
4
2
CPG
0.1
F
ON
R1
1 M
1.5 V
MSP430
Display
Amplifier
Sensor
+
Figure 23. 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 as follows:
RθJA +
T
J–TA
P
D
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 with the following formula:
PD = VIN × IIN – VO × IO = VIN(max) × (3 × IO + I(SUPPLY)) – VO × IO
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.
With this maximum rating and the thermal resistance of the device on the EVM, the maximum temperature rise
above ambient temperature can be calculated:
TJ = RθJA × PD = 200°C/W × 46 mW = 10°C
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
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 24. 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 24. 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS60300DGSRG4 | 功能描述:电荷泵 3.0/3.3V 20mA Dual Out Hi-Eff Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 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 |
| TPS60301 | 制造商:TI 制造商全称:Texas Instruments 功能描述:SINGLE-CELL TO 3.0-V/3.3-V, 20-mA DUAL OUTPUT, HIGH-EFFICIENCY CHARGE PUMP |
| TPS60301DGS | 功能描述:电荷泵 3.0/3.3V 20mA Dual Out Hi-Eff Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 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 |
| TPS60301DGSG4 | 功能描述:电荷泵 Sgl-Cell-3.0V/3.3V 20mA Dual Output 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 |
| TPS60301DGSR | 功能描述:电荷泵 3.0/3.3V 20mA Dual Out Hi-Eff Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 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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