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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS626751

現行

500-mA、6-MHz 高效率降壓轉換器、Vout=1.2V

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
TPS62801 現行 採用 0.7 mm x 1.05 mm 晶片級封裝的 1.75 V 至 5.5 V 輸入、1 A 超低 IQ 降壓轉換器 Lower Iq of 2.3 uA, smaller solution size and broader output voltage range (0.8 V to 1.55 V)

TPS626751

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 2.3 Vin (max) (V) 4.8 Switching frequency (min) (kHz) 5400 Switching frequency (max) (kHz) 6600 Features Enable, Forced PWM, Light load efficiency, Output discharge, Spread Spectrum, Synchronous Rectification EMI features Spread Spectrum Control mode Voltage mode Vout (min) (V) 1.2 Vout (max) (V) 1.2 Iq (typ) (µA) 17 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 2.3 Vin (max) (V) 4.8 Switching frequency (min) (kHz) 5400 Switching frequency (max) (kHz) 6600 Features Enable, Forced PWM, Light load efficiency, Output discharge, Spread Spectrum, Synchronous Rectification EMI features Spread Spectrum Control mode Voltage mode Vout (min) (V) 1.2 Vout (max) (V) 1.2 Iq (typ) (µA) 17 Duty cycle (max) (%) 100
DSBGA (YFD) 6 1.4000000000000001 mm² 1.4000000000000001 x 1
  • 92% Efficiency at 6MHz Operation
  • 17µA Quiescent Current
  • Wide VIN Range From 2.3V to 4.8V
  • 6MHz Regulated Frequency Operation
  • Spread Spectrum, PWM Frequency Dithering
  • Best in Class Load and Line Transient
  • ±2% Total DC Voltage Accuracy
  • Low Ripple Light-Load PFM Mode
  • ≥35dB VIN PSRR (1kHz to 10kHz)
  • Simple Logic Enable Inputs
  • Supports External Clock Presence Detect Enable Input
  • Three Surface-Mount External Components Required (One 0603 MLCC Inductor, Two 0402 Ceramic Capacitors)
  • Complete Sub 0.33-mm Component Profile Solution
  • Total Solution Size <10 mm2
  • Available in a 6-Pin NanoFree™ (CSP) Ultra-Thin Packaging, 0.4 mm Max. Height
  • 92% Efficiency at 6MHz Operation
  • 17µA Quiescent Current
  • Wide VIN Range From 2.3V to 4.8V
  • 6MHz Regulated Frequency Operation
  • Spread Spectrum, PWM Frequency Dithering
  • Best in Class Load and Line Transient
  • ±2% Total DC Voltage Accuracy
  • Low Ripple Light-Load PFM Mode
  • ≥35dB VIN PSRR (1kHz to 10kHz)
  • Simple Logic Enable Inputs
  • Supports External Clock Presence Detect Enable Input
  • Three Surface-Mount External Components Required (One 0603 MLCC Inductor, Two 0402 Ceramic Capacitors)
  • Complete Sub 0.33-mm Component Profile Solution
  • Total Solution Size <10 mm2
  • Available in a 6-Pin NanoFree™ (CSP) Ultra-Thin Packaging, 0.4 mm Max. Height

The TPS6267x devices are high-frequency synchronous step-down dc-dc converters optimized for small battery-powered applications. Intended for low-power applications, the TPS6267x supports up to 650-mA load current and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3V to 4.8V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 1.05V to 2.1V. The TPS6267x operates at a regulated 6-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

The PFM mode extends the battery life by reducing the quiescent current to 17µA (typ) during light load operation. For noise-sensitive applications, the device has PWM spread spectrum capability providing a lower noise regulated output, as well as low noise at the input. These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.

The TPS6267x devices are high-frequency synchronous step-down dc-dc converters optimized for small battery-powered applications. Intended for low-power applications, the TPS6267x supports up to 650-mA load current and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3V to 4.8V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 1.05V to 2.1V. The TPS6267x operates at a regulated 6-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

The PFM mode extends the battery life by reducing the quiescent current to 17µA (typ) during light load operation. For noise-sensitive applications, the device has PWM spread spectrum capability providing a lower noise regulated output, as well as low noise at the input. These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.
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技術文件

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類型 標題 日期
* Data sheet TPS6267x 500-mA/650-mA, 6-MHz High-Efficiency Step-Down Converter in Low Profile Chip Scale Packaging (Height < 0.4mm) datasheet (Rev. G) PDF | HTML 2017年 1月 17日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日

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模擬型號

TPS626751 PSpice Transient Model

SLVMDG2.ZIP (279 KB) - PSpice Model
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DSBGA (YFD) 6 Ultra Librarian
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