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參數資料
| 型號： | TPS76925DBV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS |
| 中文描述： | 超低功耗100毫安低壓降線性穩壓器 |
| 文件頁數： | 13/16頁 |
| 文件大小： | 235K |
| 代理商： | TPS76925DBV |
TPS76901, TPS76912, TPS76915, TPS76918, TPS76925
TPS76927, TPS76928, TPS76930, TPS76933, TPS76950
ULTRALOW-POWER 100-mA LOW-DROPOUT LINEAR REGULATORS
SLVS203D – JUNE 1999 – REVISED APRIL 2000
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output voltage programming
The output voltage of the TPS76901 adjustable regulator is programmed using an external resistor divider as
shown in Figure 22. The output voltage is calculated using:
VO
Vref
1
R1
R2
(1)
Where:
V
ref
= 1.224 V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 7-
μ
A divider current. Lower value resistors can be
used but offer no inherent advantage and waste more power. Higher values should be avoided as leakage
currents at FB increase the output voltage error. The recommended design procedure is to choose
R2 = 169 k
to set the divider current at 7
μ
A and then calculate R1 using:
R1
VO
Vref
1
R2
(2)
VO
VI
OUT
FB
R2
GND
EN
IN
≤
0.9 V
≥
1.7 V
TPS76901
1
μ
F
OUTPUT
VOLTAGE
(V)
R1
R2
2.5
3.3
3.6
4.0
5.0
174
287
324
383
523
169
169
169
169
169
OUTPUT VOLTAGE
PROGRAMMING GUIDE
DIVIDER RESISTANCE
(k
)
1% values shown.
3
1
4
2
R1
5
ESR = 0.2
4.7
μ
F
Figure 22. TPS76901 Adjustable LDO Regulator Programming
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS76925DBVR | 功能描述:低壓差穩壓器 - LDO 2.5V 100mA 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76925DBVRG4 | 功能描述:低壓差穩壓器 - LDO Ultra Low-Power 100-mA 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76925DBVT | 功能描述:低壓差穩壓器 - LDO 2.5V 100mA 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76925DBVTG4 | 功能描述:低壓差穩壓器 - LDO Ultra Low-Power 100-mA 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76925QDBVRG4Q1 | 功能描述:低壓差穩壓器 - LDO Sgl Output LDO 100mA Fixed 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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