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線性與低壓差 (LDO) 穩壓器

LP2980-N

現行

具啟用功能的 50-mA、16-V、低壓差電壓穩壓器

立即訂購
產品規格表

LP2980-N

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Vin (max) (V) 16 Vin (min) (V) 2.1 Iout (max) (A) 0.05 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 3, 3.3, 3.8, 4.7, 5 Noise (µVrms) 160 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.065 Features Enable Thermal resistance θJA (°C/W) 175 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 120 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 16 Vin (min) (V) 2.1 Iout (max) (A) 0.05 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 2.5 Fixed output options (V) 2.5, 3, 3.3, 3.8, 4.7, 5 Noise (µVrms) 160 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.065 Features Enable Thermal resistance θJA (°C/W) 175 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 120 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • VIN range (new chip): 2.5V to 16V
  • VOUT range (new chip):
    • 1.2V to 5.0V (fixed, 100mV steps)
  • VOUT accuracy:
    • ±0.5% for A-grade legacy chip
    • ±1% for standard-grade legacy chip
    • ±0.5% for new chip (A grade and standard grade)
  • Output accuracy over load, and temperature: ±1% (new chip)
  • Output current: Up to 50mA
  • Low IQ (new chip): 69µA at ILOAD = 0mA
  • Low IQ (new chip): 380µA at ILOAD = 50mA
  • Shutdown current over temperature:
    • 0.01µA (typ) for legacy chip
    • 1.12µA (typ) for new chip
  • Output current limiting and thermal protection
  • Stable with 2.2µF ceramic capacitors (new chip)
  • High PSRR (new chip):
    • 75dB at 1kHz, 45dB at 1MHz
  • Operating junction temperature: –40°C to +125°C
  • Package: 5-pin SOT-23 (DBV)
  • VIN range (new chip): 2.5V to 16V
  • VOUT range (new chip):
    • 1.2V to 5.0V (fixed, 100mV steps)
  • VOUT accuracy:
    • ±0.5% for A-grade legacy chip
    • ±1% for standard-grade legacy chip
    • ±0.5% for new chip (A grade and standard grade)
  • Output accuracy over load, and temperature: ±1% (new chip)
  • Output current: Up to 50mA
  • Low IQ (new chip): 69µA at ILOAD = 0mA
  • Low IQ (new chip): 380µA at ILOAD = 50mA
  • Shutdown current over temperature:
    • 0.01µA (typ) for legacy chip
    • 1.12µA (typ) for new chip
  • Output current limiting and thermal protection
  • Stable with 2.2µF ceramic capacitors (new chip)
  • High PSRR (new chip):
    • 75dB at 1kHz, 45dB at 1MHz
  • Operating junction temperature: –40°C to +125°C
  • Package: 5-pin SOT-23 (DBV)

The LP2980-N is a fixed-output, wide-input, low-dropout (LDO) voltage regulator supporting an input voltage range from 2.5V to 16V and up to 50mA of load current. The LP2980-N supports an output range of 1.2V to 5.0V (new chip).

Additionally, the LP2980-N (new chip) has a 1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

In the new chip, wide bandwidth PSRR performance is 75dB at 1kHz and 45dB at 1MHz to help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.

The internal soft-start time and current-limit protection reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included.

The LP2980-N is available in a 5-pin, 2.9mm × 1.6mm SOT-23 (DBV) package.

The LP2980-N is a fixed-output, wide-input, low-dropout (LDO) voltage regulator supporting an input voltage range from 2.5V to 16V and up to 50mA of load current. The LP2980-N supports an output range of 1.2V to 5.0V (new chip).

Additionally, the LP2980-N (new chip) has a 1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

In the new chip, wide bandwidth PSRR performance is 75dB at 1kHz and 45dB at 1MHz to help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.

The internal soft-start time and current-limit protection reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included.

The LP2980-N is available in a 5-pin, 2.9mm × 1.6mm SOT-23 (DBV) package.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LP2980-N Micropower, 50mA, Ultra-Low Dropout Regulator in SOT-23 Package datasheet (Rev. R) PDF | HTML 2025/2/26
應用說明 AN-1172 LP2980, LP2981, LP2982, LP2985 Micro SMD Demo Boards (Rev. B) 2013/4/25
應用說明 AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 2013/4/23
白皮書 Engineers note: Capacitors are key to voltage regulator design 2002/7/1

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參考設計

PMP10098 — 具超廣泛輸入電壓範圍的低功耗返馳參考設計

此參考設計具備 19-375V DC / 19-265V AC 的超寬輸入電壓範圍，並提供 12.0V/40mA 的隔離式輸出。線性穩壓器可提供 5.0V/15mA 的第二個輸出。

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參考設計

PMP30168 — 具有 24VDC 輸入和 12VDC 輸出的 280W 車用雙相同步降壓參考設計

這款適合汽車應用的 280W 雙相同步降壓轉換器專為 24V 至 28V 額定輸入電壓設計，並支援啟動（低至 18V）和 < 58V 的負載突降。此設計可在 12 至 14V 的輸出電壓下提供高達 20A 的輸出電流，並可透過微調器外部設定。藉由加入輸入濾波器，此設計可實現極低的 EMI 和傳導發射。輸出電流可透過此設計中隨附的電流感測放大器監控。
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SOT-23 (DBV) 5 Ultra Librarian
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