TPS25221

現行

0.275-2.7A 可調整ILIMIT、2.5-5.5V、70mΩ USB 電源開關、高電位作動、反向阻斷

產品詳細資料

Product type Adjustable current limit, Power switch Vin (max) (V) 5.5 Vin (min) (V) 2.5 Rating Catalog Number of channels 1 Operating temperature range (°C) -40 to 125 Current limit accuracy at 1 A 0.1 Enable Active High
Product type Adjustable current limit, Power switch Vin (max) (V) 5.5 Vin (min) (V) 2.5 Rating Catalog Number of channels 1 Operating temperature range (°C) -40 to 125 Current limit accuracy at 1 A 0.1 Enable Active High
WSON (DRV) 6 4 mm² (2 mm × 2 mm) SOT-23 (DBV) 6 8.12 mm² (2.9 mm × 2.8 mm)
  • 2.5-V to 5.5-V VOPERATING
  • Pin-to-Pin with TPS2553
  • 2-A ICONT_MAX
  • 0.275-A to 2.7-A Adjustable ILIMIT (±6.5% at 1.7 A)
  • 70-mΩ (typical) RON
  • 1.5-µs Short Circuit Response
  • 8-ms Fault Reporting Deglitch
  • Reverse Current Blocking (when disabled)
  • Built-In Soft Start
  • UL 60950 and UL 62368 Recognition
  • 15-kV ESD Protection per IEC 61000-4-2 (with external capacitance)
  • 2.5-V to 5.5-V VOPERATING
  • Pin-to-Pin with TPS2553
  • 2-A ICONT_MAX
  • 0.275-A to 2.7-A Adjustable ILIMIT (±6.5% at 1.7 A)
  • 70-mΩ (typical) RON
  • 1.5-µs Short Circuit Response
  • 8-ms Fault Reporting Deglitch
  • Reverse Current Blocking (when disabled)
  • Built-In Soft Start
  • UL 60950 and UL 62368 Recognition
  • 15-kV ESD Protection per IEC 61000-4-2 (with external capacitance)

The TPS25221 is intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold maybe set between 275 mA and 2.7 A (typical) using an external resistor. ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. Power-switch rise and fall times are controlled to minimize current surges during turn on and turn off.

When a load attempts to draw current exceeding the programmed ILIMIT the internal FET enters constant current mode in order to keep ILOAD at or below ILIMIT. The FAULT output will assert low during over-current conditions after the built in de-glitch time.

The TPS25221 is intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold maybe set between 275 mA and 2.7 A (typical) using an external resistor. ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. Power-switch rise and fall times are controlled to minimize current surges during turn on and turn off.

When a load attempts to draw current exceeding the programmed ILIMIT the internal FET enters constant current mode in order to keep ILOAD at or below ILIMIT. The FAULT output will assert low during over-current conditions after the built in de-glitch time.

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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 TPS25221 2.5-V to 5.5-V, 2-A Continuous Current Limited Switch datasheet (Rev. D) PDF | HTML 2019/12/11
證書 TPS25221 UL Certificate of Compliance IEC 62368-1 2020/8/14
應用說明 Power Switch Fault Glitch Solution During Power Up (Rev. A) PDF | HTML 2020/4/9

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開發板

TPS25221DBVEVM-018 — 適用於可調整電流限制 USB 電源開關的 TPS25221 評估模組

TPS25221DBVEVM-018 是一款評估模組 (EVM),適用於德州儀器可調電流限制型電源分配開關系列。此 EVM 可在 2.5V 至 5.5V 範圍內運作。板載跨接器可將輸出電流限制設定為 1.3A 或 2.6A。 測試點可方便存取所有重要節點電壓。
使用指南: PDF
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模擬型號

TPS25221 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMCO6A.ZIP (73 KB) - PSpice 模型
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參考設計

TIDA-050027 — 具有彈性分割功能,可最大限度地節省電源的多軌電視電源供應參考設計

TIDA-050027 參考設計是一款適用於電視 (TV) 平台的電源分配解決方案。透過提供模擬常見電壓軌和周邊設備的配置,此設計可作為跨多種電視電源架構的參考設計,包括 LCD 和 OLED 電視。在輸入端使用 eFuse 進行短路防護,而高效率降壓轉換器為核心軌、常開軌和周邊軌提供必要的電源。此外,對於特定周邊設備,低 IQ 低壓差穩壓器 (LDO) 提供乾淨的數位電源軌。除了這些電源元件外,負載開關也會透過控制電壓轉換速率控制電壓,以實現電源排序和省電。此外,整合式負載開關可提供自我防護,同時減少 BOM 數量和解決方案尺寸。

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WSON (DRV) 6 Ultra Librarian
SOT-23 (DBV) 6 Ultra Librarian

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