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參數(shù)資料
| 型號： | TPS77518-Q1 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Automotive Catalog Fast Transient-Response 500-mA Low-Dropout Voltage Regulators |
| 中文描述： | 汽車產(chǎn)品目錄快速瞬態(tài)響應(yīng)的500mA低壓降穩(wěn)壓器 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大?。?/td> | 316K |
| 代理商： | TPS77518-Q1 |
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
external capacitor requirements (continued)
RESET/
PG
OUT
OUT
7
6
5
IN
IN
EN
GND
3
16
14
13
VI
C1
0.1
μ
F
RESET/PG
VO
10
μ
F
+
CO
250 k
Figure 24. Typical Application Circuit (Fixed Versions)
programming the TPS77x01 adjustable LDO regulator
The output voltage of the TPS77x01 adjustable regulator is programmed using an external resistor divider as
shown in Figure 25. The output voltage is calculated using:
VO
Vref
1
R1
R2
(1)
Where
V
ref
= 1.1834 V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 10-
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 = 110 k
to set the divider current at approximately 10
μ
A and then calculate R1 using:
R1
VO
Vref
1
R2
(2)
OUTPUT
VOLTAGE
2.5 V
3.3 V
3.6 V
4.75 V
R1
R2
UNIT
121
196
226
332
110
110
110
110
k
k
k
k
OUTPUT VOLTAGE
PROGRAMMING GUIDE
VO
VI
RESET/
PG
OUT
FB / NC
GND
R1
R2
EN
IN
≤
0.9 V
≥
1.7 V
TPS77x01
Reset or PG Output
0.1
μ
F
250 k
CO
Figure 25. TPS77x01 Adjustable LDO Regulator Programming
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS77518QPWPRQ1 | 功能描述:低壓差穩(wěn)壓器 - LDO Fast Trans-Resp 500 mA LDO Vltg Reg 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(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 |
| TPS77525D | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Res 500-mA 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(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 |
| TPS77525D | 制造商:Texas Instruments 功能描述:Voltage Regulator IC Voltage Regulator T |
| TPS77525D | 制造商:Texas Instruments 功能描述:IC V REG LDO 2.5V SMD SOIC8 制造商:Texas Instruments 功能描述:IC, V REG, LDO, 2.5V, SMD, SOIC8 |
| TPS77525DG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Res 500-mA 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(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 |
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