參數(shù)資料
型號(hào)： TPS70758PWPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封裝： GREEN, PLASTIC, HTSSOP-20
文件頁(yè)數(shù)： 25/40頁(yè)
文件大?。?/td> 918K
代理商： TPS70758PWPRG4
www.ti.com
ESR 1
ESR 2
ESR 3
3
1
2
t1
t2
IO
VO
Conclusion
Programming the TPS70702 Adjustable LDO Converter
R1
+
V
O
V
ref
*1
R2
(1)
TPS70745, TPS70748
TPS70751, TPS70758
TPS70702
SLVS291D – MAY 2000 – REVISED DECEMBER 2007
Figure 45. Correlation of Different ESRs and Their Influence on the Regulation of VO at a Load Step from
Low-to-High Output Current
Figure 45 also shows the impact of different ESRs on the output voltage. The left brackets show different levels
of ESRs where number 1 displays the lowest and number 3 displays the highest ESR.
From above, the following conclusions can be drawn:
The higher the ESR, the larger the droop at the beginning of load transient.
The smaller the output capacitor, the faster the discharge time and the greater the voltage droop during the
LDO response period.
To minimize the transient output droop, capacitors must have a low ESR and be large enough to support the
minimum output voltage requirement.
The output voltage of the TPS70702 adjustable regulators are programmed using external resistor dividers as
shown in Figure 46.
Resistors R1 and R2 should be chosen for approximately 50
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 the sense terminal increase the output voltage error. The recommended design procedure is to
choose R2 = 30.1k
to set the divider current at approximately 50
A, and then calculate R1 using Equation 1:
where:
V
REF = 1.224V typ (the internal reference voltage)
Copyright 2000–2007, Texas Instruments Incorporated
31
相關(guān)PDF資料
PDF描述
TPS70802PWP DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
TPS70845PWP DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
TPS72525DCQ LOW INPUT VOLTAGE, 1-A LOW-DROPOUT LINEAR REGULATORS WITH SUPERVISOR
TPS72525KTT LOW INPUT VOLTAGE, 1-A LOW-DROPOUT LINEAR REGULATORS WITH SUPERVISOR
TPS726126 "Single Output LDO
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS708 制造商:Toshiba 功能描述:Photodiode PIN Chip 850nm 2-Pin 0-5A1
TPS70802 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
TPS70802PWP 功能描述:低壓差穩(wěn)壓器 - LDO Dual Adj 250/125mA 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
TPS70802PWP 制造商:Texas Instruments 功能描述:IC DUAL ADJ LDO 20-HTSSOP 制造商:Texas Instruments 功能描述:IC, DUAL ADJ LDO 20-HTSSOP
TPS70802PWPG4 功能描述:低壓差穩(wěn)壓器 - LDO Dual-Output 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*