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| 型號： | LM2645 |
| 文件頁數(shù)： | 8/18頁 |
| 文件大小： | 504K |
| 代理商： | LM2645 |
Electrical Characteristics
(Continued)
Note 8:
Both controllers are ON but not switching. Currents entering the IC at IN, CSL1, CSH1, CSL2, and CSH2 are measured. Those entering at CSL1 and CSH1
are multiplied by 0.50 to emulate the effect of a switching conversion from 10V down to 5V. Those entering at CSL2 and CSH2 are multiplied by 0.33 to emulate
the effect of a switching conversion from 10V down to 3.3V. After multiplication, all five currents are added. Because the voltage at the CSL1 input is greater than
the LIN-to-V
OUT
switchover threshold, most of the input supply current enters the IC via the CSL1 input.
Note 9:
Both switching controllers are OFF. The 5V, 50 mA linear regulator (output at LIN) and the precision 2.5V reference (output at REF) remain ON.
Note 10:
Both switching controllers and the 2.5V precision reference are OFF. The 5V, 50 mA linear regulator remains ON.
Note 11:
The controllers remain OFF until the voltage of the 5V, 50 mA linear regulator (output at LIN) reaches this threshold.
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相關(guān)代理商/技術(shù)參數(shù) |
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| LM2645MTD | 制造商:Texas Instruments 功能描述: |
| LM2645MTD/NOPB | 功能描述:IC CTRLR SW 2PHS 2OUTPUT 48TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
| LM2645MTDX | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM2645MTDX/NOPB | 功能描述:IC CTLR SW 2PHS 2OUTPUT 48TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
| LM2647 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Synchronous Buck Regulator Controller |
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