UA78M

現行

500mA 35V 線性電壓穩壓器

產品詳細資料

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 30 Vin (min) (V) 5.3 Vout (max) (V) 12 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5, 6, 8, 9, 10, 12 Noise (µVrms) 40 Iq (typ) (mA) 4.5 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 3 PSRR at 100 KHz (dB) 40 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 30 Vin (min) (V) 5.3 Vout (max) (V) 12 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5, 6, 8, 9, 10, 12 Noise (µVrms) 40 Iq (typ) (mA) 4.5 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 3 PSRR at 100 KHz (dB) 40 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) -40 to 125
SOT-223 (DCY) 4 45.5 mm² 6.5 x 7 TO-220 (KCS) 3 46.228 mm² 10.16 x 4.55 TO-252 (KVU) 3 66.726 mm² 6.6 x 10.11
  • Input voltage range (VIN): 5.3V to 35V
  • Output voltage range (VOUT): 3.3V to 12V
  • Output current (IOUT): Up to 500mA
  • Quiescent current IQ: 4.5mA
  • Built-in short-circuit current limiting and thermal protection
  • Stable without any external components
  • Operating temperature range:
    • Legacy chip C versions: 0°C to +125°C
    • Legacy chip I version: –40°C to +125°C
    • New chip: –40°C to +125°C
  • Packages:
    • 3-pin, 6.5mm × 7mm SOT-223
    • 3-pin, 6.6mm × 10.11mm TO-252
  • Input voltage range (VIN): 5.3V to 35V
  • Output voltage range (VOUT): 3.3V to 12V
  • Output current (IOUT): Up to 500mA
  • Quiescent current IQ: 4.5mA
  • Built-in short-circuit current limiting and thermal protection
  • Stable without any external components
  • Operating temperature range:
    • Legacy chip C versions: 0°C to +125°C
    • Legacy chip I version: –40°C to +125°C
    • New chip: –40°C to +125°C
  • Packages:
    • 3-pin, 6.5mm × 7mm SOT-223
    • 3-pin, 6.6mm × 10.11mm TO-252

The UA78M fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. Use the UA78M for on-card regulation to eliminate noise and distribution problems associated with single-point regulation. The UA78M is also used with power-pass elements to make high-current voltage regulators. The UA78M delivers up to 500mA of output current. Additionally, the UA78M does not need an external capacitor for stable operation across the load current range. The internal current-limiting and thermal-shutdown features of this regulator help protect the device from overload.

The UA78M is characterized for the junction temperature range of –40°C to +125°C. See the Device Nomenclature table for more details.

The UA78M fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. Use the UA78M for on-card regulation to eliminate noise and distribution problems associated with single-point regulation. The UA78M is also used with power-pass elements to make high-current voltage regulators. The UA78M delivers up to 500mA of output current. Additionally, the UA78M does not need an external capacitor for stable operation across the load current range. The internal current-limiting and thermal-shutdown features of this regulator help protect the device from overload.

The UA78M is characterized for the junction temperature range of –40°C to +125°C. See the Device Nomenclature table for more details.

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類型 標題 日期
* Data sheet UA78M 35V, 500mA, Positive-Voltage Linear Regulator datasheet (Rev. U) PDF | HTML 2024年 5月 17日
Application note LDO Noise Demystified (Rev. B) PDF | HTML 2020年 8月 18日
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日

設計與開發

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開發板

MLTLDO2EVM-037 — 適用於 DCY、DDA 和 KVU 封裝的通用 LDO 線性電壓穩壓器評估模組

MLTLDO2EVM-037 多重封裝低壓差 (LDO) 評估模組 (EVM) 可讓設計工程師評估多種常用線性穩壓器封裝的運作情形及性能,以利在自己的電路應用中使用。此 EVM 配置包含 DDA、3 針腳和 5 針腳 KVU,以及用於工程師焊接和評估其零件的 DCY 封裝板上配置。

使用指南: PDF
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模擬型號

UA78M Fixed 5V PSpice Transient Model

SLVME53.ZIP (26 KB) - PSpice Model
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-223 (DCY) 4 Ultra Librarian
TO-220 (KCS) 3 Ultra Librarian
TO-252 (KVU) 3 Ultra Librarian

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  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
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