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LP3991

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具有使能功能的 300mA、低壓降穩(wěn)壓器

產(chǎn)品詳情

Rating Catalog Vin (max) (V) 3.6 Vin (min) (V) 1.65 Iout (max) (A) 0.3 Output options Fixed Output Vout (max) (V) 3 Vout (min) (V) 1.2 Fixed output options (V) 1.2, 1.3, 1.5, 1.7, 1.8, 2, 2.5, 2.8, 3 Noise (μVrms) 280 PSRR at 100 KHz (dB) 25 Iq (typ) (mA) 0.05 Features Enable Thermal resistance θJA (°C/W) 190 Load capacitance (min) (μF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 3.6 Vin (min) (V) 1.65 Iout (max) (A) 0.3 Output options Fixed Output Vout (max) (V) 3 Vout (min) (V) 1.2 Fixed output options (V) 1.2, 1.3, 1.5, 1.7, 1.8, 2, 2.5, 2.8, 3 Noise (μVrms) 280 PSRR at 100 KHz (dB) 25 Iq (typ) (mA) 0.05 Features Enable Thermal resistance θJA (°C/W) 190 Load capacitance (min) (μF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
DSBGA (YZR) 4 1.5625 mm2 1.25 x 1.25
  • Input Voltage From 1.65 V to 4 V
  • Output Voltage From 0.8 V to 3 V
  • 1% Accuracy at Room Temperature
  • 125-mV Dropout at 300-mA Load
  • 50-μA Quiescent Current at 1-mA Load
  • Inrush Current Controlled to 600 mA
  • PSRR 65 dB at 1 kHz
  • 100-μs Start-Up Time for 1.5-V VOUT
  • Stable With Ceramic Capacitors as Small as 0402
  • Thermal-Overload and Short-Circuit Protection
  • Input Voltage From 1.65 V to 4 V
  • Output Voltage From 0.8 V to 3 V
  • 1% Accuracy at Room Temperature
  • 125-mV Dropout at 300-mA Load
  • 50-μA Quiescent Current at 1-mA Load
  • Inrush Current Controlled to 600 mA
  • PSRR 65 dB at 1 kHz
  • 100-μs Start-Up Time for 1.5-V VOUT
  • Stable With Ceramic Capacitors as Small as 0402
  • Thermal-Overload and Short-Circuit Protection

Operating from a minimum input voltage of 1.65 V, the LP3991 LDO has been designed to provide fixed stable output voltages for load currents up to 300 mA. This device is suitable where accurate low voltages are required from low input voltage sources and is therefore suitable for post regulation of switched mode regulators. In such applications, significant improvements in performance and EMI can be realized, with little reduction in overall efficiency. The LP3991 provides fixed outputs as low as 1.2 V from a wide input range from 1.65 V to 4 V Using the enable (EN) pin, the device may be controlled to provide a shutdown state, in which negligible supply current is drawn.

The LP3991 is designed to be stable with space-saving ceramic capacitors as small as 0402 case size.

Performance is specified for a –40°C to +125°C junction temperature range. For output voltage options, contact your local Texas Instruments sales office.

For all available packages, see the orderable addendum at the end of the datasheet.

Operating from a minimum input voltage of 1.65 V, the LP3991 LDO has been designed to provide fixed stable output voltages for load currents up to 300 mA. This device is suitable where accurate low voltages are required from low input voltage sources and is therefore suitable for post regulation of switched mode regulators. In such applications, significant improvements in performance and EMI can be realized, with little reduction in overall efficiency. The LP3991 provides fixed outputs as low as 1.2 V from a wide input range from 1.65 V to 4 V Using the enable (EN) pin, the device may be controlled to provide a shutdown state, in which negligible supply current is drawn.

The LP3991 is designed to be stable with space-saving ceramic capacitors as small as 0402 case size.

Performance is specified for a –40°C to +125°C junction temperature range. For output voltage options, contact your local Texas Instruments sales office.

For all available packages, see the orderable addendum at the end of the datasheet.

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類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 LP3991 300-mA LDO for Digital Applications 數(shù)據(jù)表 (Rev. J) PDF | HTML 2016年 6月 15日
EVM 用戶指南 AN-1416 LP3991TL DSBGA Evaluation Board Information (Rev. B) 2013年 4月 30日
應(yīng)用手冊 Application Note 1416 LP3991TL micro SMD Evaluation Board Information (cn) 2007年 3月 11日

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評估板

LP3991TL-1.3EV — 用于數(shù)字應(yīng)用的 300mA 線性電壓穩(wěn)壓器

The LP3991 is a 300mA Linear Voltage Regulator for Digital Applications. Operating from a minimum input voltage of 1.65V, the LP3991 regulator has been designed to provide fixed stable output voltages for load currents up to 300mA. This device is suitable where accurate, low voltages are required (...)

用戶指南: PDF
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參考設(shè)計

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此 PMP10600.1 參考設(shè)計提供為 Xilinx? Zynq? 7000 系列 (XC7Z015) FPGA 供電時所需的所有電源軌。此設(shè)計使用多個 LMZ3 系列模塊、多個 LDO 和一個 DDR 終端穩(wěn)壓器。它還具有一個用于加電和斷電排序的 LM3880。此設(shè)計采用 12V 輸入電壓。
測試報告: PDF
原理圖: PDF
參考設(shè)計

PMP10601 — Xilinx® Zynq®7000 系列 (XC7Z015) 電源解決方案 (8W) - 參考設(shè)計

PMP10601 參考設(shè)計提供為 Xilinx? Zynq? 7000 系列 (XC7Z015) FPGA 供電時所需的所有電源軌。此設(shè)計使用多個 LMZ3 系列模塊、多個 LDO 和一個 DDR 終端穩(wěn)壓器提供為 FPGA 供電時所需的所有電源軌。它還具有一個用于加電和斷電排序的 LM3880。此設(shè)計采用 12V 輸入電壓。
測試報告: PDF
原理圖: PDF
參考設(shè)計

PMP10630 — Xilinx Kintex UltraScale XCKU040 FPGA 電源解決方案，6W 參考設(shè)計

PMP10630 參考設(shè)計是 Xilinx? Kintex? UltraScale? XCKU040 FPGA 的完整高密度電源解決方案。此設(shè)計采用 SIMPLE SWITCHER? 模塊與 LDO 的最佳組合，以 36 x 43 mm（1.4 x 1.7 英寸）的較小解決方案尺寸提供所有必要的電壓軌。此設(shè)計包含為內(nèi)核電壓軌供電的 LMZ31704 LMZ3 系列模塊以及三個 LMZ21700/1 Nano 系列模塊。此設(shè)計使用 LM3880 序列發(fā)生器來管理正確的電源定序，此外還包含帶 LP2998 DDR 終端穩(wěn)壓器的 DDR3 (...)
測試報告: PDF
原理圖: PDF
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