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參數(shù)資料
| 型號(hào)： | TPS715 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 50 mA, 24 V, 3.2 uA Supply Current Low-Dropout Linear Regulator |
| 中文描述： | 50毫安，24伏，3.2微安電源電流低壓差線性穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 8/14頁(yè) |
| 文件大?。?/td> | 294K |
| 代理商： | TPS715 |
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Programming the TPS71501 Adjustable LDO Regulator
The output voltage of the TPS71501 adjustable regulator is programmed using an external resistor divider as
shown in
Figure 14
. The output voltage operating range is 1.2 V to 15 V, and is calculated using:
V
OUT
V
REF
1
R1
R2
(3)
R1
V
OUT
V
REF
1
R2
(4)
OUTPUT VOLTAGE
PROGRAMMING GUIDE
OUTPUT
VOLTAGE
1.8 V
2.8 V
5.0 V
R1
R2
0.499 M
1.33 M
3.16 M
1 M
1 M
1 M
GND
FB
IN
OUT
V
IN
V
OUT
R
1
C
FB
R
2
TPS71501
V
OUT
V
REF
1
R1
R2
0.1
μ
F
0.47
μ
F
Power the MSP430 Microcontroller
Several versions of the TPS715xx are ideal for powering the MSP430 microcontroller.
Table 2
shows potential
applications of some voltage versions.
TPS715xx
SLVS338L–MAY 2001–REVISED SEPTEMBER 2005
APPLICATION INFORMATION (continued)
where:
Resistors R1 and R2 should be chosen for approximately 1.5-μA divider current. Lower value resistors can be
used for improved noise performance, but the solution consumes more power. Higher resistor values should be
avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially
increases/decreases the feedback voltage and thus erroneously decreases/increases V
OUT
. The recommended
design procedure is to choose R2 = 1 M
to set the divider current at 1.5 μA, and then calculate R1 using:
V
REF
= 1.205 V typ (the internal reference voltage)
Figure 14. TPS71501 Adjustable LDO Regulator Programming
Table 2. Typical MSP430 Applications
APPLICATION
V
OUT, MIN
> 1.800V required by many MSP430s. Allows lowest power consumption operation.
V
OUT, MIN
> 2.200V required by some MSP430s FLASH operatiTPS71523
V
OUT, MIN
> 2.700V required by some MSP430s FLASH operatiTPS71530
V
OUT, MIN
< 3.600V required by some MSP430s. Allows highest speed operation.
V
OUT
(TYP)
TPS71519
1.9V
2.3V
3.0V
TPS715345
2.45V
The TPS715xx family offers many output voltage versions to allow designers to minimize the supply voltage for
the processing speed required of the MSP430. This minimizes the supply current consumed by the MSP430.
8
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相關(guān)代理商/技術(shù)參數(shù) |
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| TPS7150 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Dropo |
| TPS71501 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:50 mA, 24 V, 3.2U Supply Current Low-Dropout Linear Regulator in SC70 Package |
| TPS71501DCKR | 功能描述:低壓差穩(wěn)壓器 - LDO 50mA ADJ 1.2-15V LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS71501DCKR | 制造商:Texas Instruments 功能描述:IC V REG LDO ADJ 50MA SMD 71501 |
| TPS71501DCKR | 制造商:Texas Instruments 功能描述:LOW DROP OUT (LDO) VOLTAGE REGULATOR 制造商:Texas Instruments 功能描述:IC, ADJ LDO REG 1.2V TO 15V 50mA SC-70-5 |
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