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TPS54540-Q1

新規設計での使用を推奨しません

42V、5A、降圧型レギュレータ、内蔵ハイ サイド MOSFET 付き

ご注文はこちら
データシート
TPS54540-Q1 は新規設計での使用を推奨しません
これまでにご購入されたお客様をサポートする目的でこの製品を引き続き生産しています。新規設計では代替品をご検討ください。
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TPS54540B-Q1 アクティブ Eco-mode™ 搭載、4.5V ～ 42V 入力、5A、降圧 DC/DC コンバータ Pin-compatible with the TPS54540-Q1.

TPS54540-Q1

新規設計での使用を推奨しません
データシート ご注文はこちら

製品詳細

Rating Automotive Iout (max) (A) 5 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 41.1 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Soft Start Adjustable, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000146 Duty cycle (max) (%) 98
Rating Automotive Iout (max) (A) 5 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 41.1 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Soft Start Adjustable, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000146 Duty cycle (max) (%) 98
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H1C
    • Device CDM ESD Classification Level C3B
  • High-Efficiency at Light Loads With Pulse-
    Skipping Eco-mode™
  • 92-mΩ High-Side MOSFET
  • 146-µA Operating Quiescent Current and 2-µA
    Shutdown Current
  • 100-kHz to 2.5-MHz Adjustable Switching
    Frequency
  • Synchronizes to External Clock
  • Low Dropout at Light Loads With Integrated
    BOOT Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V 1% Internal Voltage Reference
  • 8-Pin HSOP PowerPAD™ Package
  • –40°C to 150°C TJ Operating Range
  • Supported by WEBENCH® Software Tool
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H1C
    • Device CDM ESD Classification Level C3B
  • High-Efficiency at Light Loads With Pulse-
    Skipping Eco-mode™
  • 92-mΩ High-Side MOSFET
  • 146-µA Operating Quiescent Current and 2-µA
    Shutdown Current
  • 100-kHz to 2.5-MHz Adjustable Switching
    Frequency
  • Synchronizes to External Clock
  • Low Dropout at Light Loads With Integrated
    BOOT Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V 1% Internal Voltage Reference
  • 8-Pin HSOP PowerPAD™ Package
  • –40°C to 150°C TJ Operating Range
  • Supported by WEBENCH® Software Tool

The TPS54540-Q1 device is a 42-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 65 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using an external resistor divider at the enable pin. The output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide adjustable frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.

The TPS54540-Q1 is available in an 8-pin thermally-enhanced HSOP PowerPAD package.

The TPS54540-Q1 device is a 42-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 65 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using an external resistor divider at the enable pin. The output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide adjustable frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.

The TPS54540-Q1 is available in an 8-pin thermally-enhanced HSOP PowerPAD package.
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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート TPS54540-Q1 4.5-V to 42-V Input, 5-A, Step-Down DC-DC Converter With Eco-mode™ データシート (Rev. B) PDF | HTML 2015/11/25

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