具有固定 5.0V 输出的 170 uVrms 零纹波开关电容升压转换器,用于 VCO 电源 - TPS60241

TPS60241 (正在供货)

具有固定 5.0V 输出的 170 uVrms 零纹波开关电容升压转换器,用于 VCO 电源

 

描述

The TPS6024x devices are a family of switched capacitor voltage converters, ideally suited for voltage-controlled oscillator (VCO) and phase-locked loop (PLL) applications that require low noise and tight tolerances. Its dual-cap design uses four ceramic capacitors to provide ultra-low output ripple with high efficiency, while eliminating the need for inefficient linear regulators.

The TPS6024x devices operate down to 1.8 V, supporting a 3.3-V, 2.7-V, 3-V output from two-cell, nickel- or alkaline-based chemistries, whereas the TPS60241 works with 2.7-V to 5.5-V input voltage providing a 5-V output. The devices work equally well for low EMI DC–DC step-up conversion without the need for an inductor. The high switching frequency (typical 160 kHz) promotes the use of small surface-mount capacitors, saving board space. The shutdown mode of the converter conserves battery energy.

The devices are thermally protected and current-limited for reliable operation even under persisting fault conditions. Normal quiescent current (ground pin current) is only 250 µA, and typically 0.1 µA in shutdown mode. The TPS6024x devices come in a thin, 8-pin VSSOP package with a component height of only 1.1 mm.

特性

  • Wide Input Voltage Range from 1.8 V to 5.5 V
  • Regulated 2.7-V, 3-V, 3.3-V or 5-V Output
    Voltage With ±2.5% Accuracy Over Load
  • Up to 25-mA Output Current
  • 170-µVrms Zero Ripple Output:
    at 20 Hz to 10 MHz Bandwidth
  • Up to 90% Efficiency
  • Minimum Number of External Components
    • No Inductors
    • Only Small Ceramic Chip Capacitors
  • Shutdown Mode: 0.1 µA Typical
  • Thermal Protection and Current Limit
  • Micro-Small 8-Pin VSSOP Package
  • EVM Available TPS60241EVM-194

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参数 与其它产品相比 升压充电泵 (无电感器)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Operating Temperature Range (C)
Rating
Package Group
TPS60241 TPS60240 TPS60242 TPS60243
2.7    1.8    1.8    1.8   
5.5    5.5    5.5    5.5   
5    3.3    2.7    3   
5    3.3    2.7    3   
0.025    0.025    0.025    0.025   
1    1    1    1   
100    100    100    100   
220    220    220    220   
0.25    0.25    0.25    0.25   
Enable    Enable    Enable    Enable   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog   
VSSOP    VSSOP    VSSOP    VSSOP