首頁 電源管理 線性與低壓差 (LDO) 穩壓器
首頁
電源管理
線性與低壓差 (LDO) 穩壓器

LP2951-N

現行

具電源良好與啟用功能的 100-mA、30-V、低壓降電壓穩壓器

立即訂購
產品規格表

LP2951-N

現行
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2.3 Vout (max) (V) 29 Vout (min) (V) 1.24 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 43, 56, 118, 171 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2.5 PSRR at 100 KHz (dB) 51 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2.3 Vout (max) (V) 29 Vout (min) (V) 1.24 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 43, 56, 118, 171 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2.5 PSRR at 100 KHz (dB) 51 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.
filter 尋找其它 線性與低壓差 (LDO) 穩壓器
下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
具備升級功能，可直接投入使用替代所比較的產品
LP2951 現行 具電源良好與啟用功能的 100-mA、30-V、低壓降電壓穩壓器 Pin-to-pin equivalent for cost-sensitive applications
功能相同，但引腳輸出與所比較的產品不同
TLV709 現行 μA 3.2- μA 供應電流的 150-mA 30-V 低壓降 (LDO) 線性穩壓器 Improved IQ (0.003μA) and accuracy of (2%)
TPS7A49 現行 具啟用功能的 150-mA、36-V、低雜訊、高 PSRR 可調式低壓降電壓穩壓器 Similar device with reduced noise specifications of (15μVRMs)

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 9
類型 標題 日期
* Data sheet LP295x-N Series of Adjustable Micropower Voltage Regulators datasheet (Rev. Q) PDF | HTML 2017年 12月 8日
EVM User's guide LP2951 EVM User's Guide (Rev. A) 2018年 1月 5日
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 2013年 4月 23日
More literature Die D/S LP2951 MDS Series of Adjustable Micropower Voltage Regs 2012年 12月 20日
More literature Die D/S LP2951C MWC Series Of Adj Micropower Voltage Regulators 2012年 9月 28日
Application note Low-Voltage Current Loop Transmitter 2007年 8月 2日
Application note Battery Charging 2007年 3月 21日
Application note Linear and Switching Voltage Regulator Fundamental Part 1 2007年 3月 21日
White paper Versatility of the LM5030 PWM Push-Pull Controller 2003年 12月 1日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LP2951EVM — LP2951 固定/可調整微功耗低壓差 (LDO) 穩壓器評估模組

The LP2951 devices are bipolar low-dropout (LDO) voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V with an output load up to 100 mA. The LP2951EVM allows for flexibility in design, allowing the user to add or remove input and output capacitors, as well as (...)
使用指南: PDF
TI.com 無法提供
模擬型號

LP2951 PSpice Transient Model (Rev. A)

SNVM037A.ZIP (23 KB) - PSpice Model
下載
模擬型號

LP2951 Unencrypted PSpice Transient Model

SNVMAO3.ZIP (1 KB) - PSpice Model
下載
模擬型號

LP2951_N_3P0 PSpice Transient Model

SNVMAI1.ZIP (86 KB) - PSpice Model
下載
模擬型號

LP2951_N_3P0 Unencrypted PSpice Transient Model

SNVMAI0.ZIP (2 KB) - PSpice Model
下載
模擬型號

LP2951_N_3P3 PSpice Transient Model

SNVMAI4.ZIP (87 KB) - PSpice Model
下載
模擬型號

LP2951_N_3P3 Unencrypted PSpice Transient Model

SNVMAI5.ZIP (2 KB) - PSpice Model
下載
模擬型號

LP2951_N_5P0 PSpice Transient Model

SNVMAI6.ZIP (80 KB) - PSpice Model
下載
模擬型號

LP2951_N_5P0 Unencrypted PSpice Transient Model

SNVMAH9.ZIP (2 KB) - PSpice Model
下載
參考設計

TIDA-010015 — 94.5% 效率、500W 工業 AC-DC 參考設計

This reference design is a compact, high efficiency, 24-V DC, 500-W reference design for industrial AC/DC power supplies. This design consists of a front-end, two-phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28064A. This minimizes the PFC inductor size and (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010009 — 適用於伺服驅動器的小巧高效 24-V 輸入輔助電源供應參考設計

This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00777 — 適用於繼電器和斷路器，具有更高準確度的 Rogowski 線圈主動式積分器參考設計

This reference design shows an active integrator design that covers wide-input current range for Rogowski Coil with accuracy, linearity, stability and repeatability. The integrator uses a precision amplifier with very-low offset and temperature drift. Two configurations of the integrator are (...)
Design guide: PDF
電路圖: PDF
封裝 引腳 下載
PDIP (P) 8 檢視選項
SOIC (D) 8 檢視選項
VSSOP (DGK) 8 檢視選項
WSON (NGT) 8 檢視選項
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 資格摘要
  • 進行中可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片