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TPS54120

現行

具整合 DC-DC 轉換器和低壓差穩壓器的低雜訊 1A 電源

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TPS54120

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 1 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 6 Vout (min) (V) 0.8 Features Enable, Power good, Synchronous rectification Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 1 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 6 Vout (min) (V) 0.8 Features Enable, Power good, Synchronous rectification Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
VQFN (RGY) 24 19.25 mm² 5.5 x 3.5
  • Low-Noise Output: 17 µVRMS at 100 Hz to
    1 MHz
  • Wide Input Voltage Range: 4.5 V to 17 V
  • High Efficiency: 72% at 1 A, 12V Input
  • Excellent Load/Line Transient Response
  • Synchronizable to External Clock: 200 kHz to 1.2 MHz
  • Small Package: 3.5 mm × 5.5 mm QFN-24
  • Low-Noise Output: 17 µVRMS at 100 Hz to
    1 MHz
  • Wide Input Voltage Range: 4.5 V to 17 V
  • High Efficiency: 72% at 1 A, 12V Input
  • Excellent Load/Line Transient Response
  • Synchronizable to External Clock: 200 kHz to 1.2 MHz
  • Small Package: 3.5 mm × 5.5 mm QFN-24

The TPS54120 combines the high-efficiency of a step-down switching (dc-dc) converter with a high power-supply rejection (PSR), low-noise, low-dropout regulator (LDO) to provide an ultra low-noise power supply that delivers quiet power rails to noise-sensitive applications.

With a wide input range of 4.5 V to 17 V, the TPS54120 is ideally suited for systems with 12-V power busses, and supports a 1-A continuous output current. The output voltage can be set from 0.8 V to 6.0 V using external resistors. The dc-dc converter and LDO are completely configurable, allowing the TPS54120 to be used in a wide range of low-noise applications. In addition, the TPS54120 includes features such as softstart, switching frequency synchronization, and a power-good signal.

The device is available in a space-saving, 3.5-mm × 5.5-mm QFN package, and is specified to operate over a –40°C to +125°C junction temperature range.

The TPS54120 combines the high-efficiency of a step-down switching (dc-dc) converter with a high power-supply rejection (PSR), low-noise, low-dropout regulator (LDO) to provide an ultra low-noise power supply that delivers quiet power rails to noise-sensitive applications.

With a wide input range of 4.5 V to 17 V, the TPS54120 is ideally suited for systems with 12-V power busses, and supports a 1-A continuous output current. The output voltage can be set from 0.8 V to 6.0 V using external resistors. The dc-dc converter and LDO are completely configurable, allowing the TPS54120 to be used in a wide range of low-noise applications. In addition, the TPS54120 includes features such as softstart, switching frequency synchronization, and a power-good signal.

The device is available in a space-saving, 3.5-mm × 5.5-mm QFN package, and is specified to operate over a –40°C to +125°C junction temperature range.
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* Data sheet Low-Noise, 1-A Power Supply with Integrated DC-DC Converter and LDO Regulator datasheet (Rev. C) 2012年 6月 22日

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