采用芯片级封装、输出电压为 5.1V 的 3.5MHz 高效升压转换器 - TPS612592

TPS612592 (正在供货)

采用芯片级封装、输出电压为 5.1V 的 3.5MHz 高效升压转换器

 

描述

The TPS6125x device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800-mA load current from a battery discharged as low as 2.65V and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.

The TPS6125x operates at a regulated 3.5-MHz switching frequency and enters 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 37 µA (typ) during light load operation.

In addition, the TPS6125x device can also maintain its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited allowing external load (e.g. audio amplifier) to be powered with a restricted supply. In this mode, the quiescent current is reduced to 21 µA. During shutdown, the load is completely disconnected from the battery. Input current in shutdown mode is less than 1 µA (typ), which maximizes battery life.

The TPS6125x offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size.

特性

  • 93% Efficiency at 3.5-MHz Operation
  • 21-µA Quiescent Current in Standby Mode
  • 37-µA Quiescent Current in Normal Operation
  • Wide VIN Range From 2.3 V to 5.5 V
  • VIN ≥ VOUT Operation
  • IOUT ≥ 800 mA at VOUT= 4.5 V, VIN ≥ 2.65 V
  • IOUT ≥ 1000 mA at VOUT = 5.0 V, VIN ≥ 3.3 V
  • IOUT ≥ 1500 mA (Peak) at VOUT = 5.0 V, VIN ≥ 3.3 V
  • ±2% Total DC Voltage Accuracy
  • Light-Load PFM Mode
  • Selectable Standby Mode or True Load
    Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Only Three Surface-Mount External Components
    Required
  • Total Solution Size < 25 mm2
  • 9-Pin NanoFree™ (CSP) Packaging

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参数 与其它产品相比 升压转换器 (集成开关)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS612592 TPS61253 TPS61253A TPS61254 TPS61256 TPS61256C TPS61258 TPS61259
  2.65    2.3    2.5    2.5    2.5    2.65     
  4.85    5.5    4.35    4.85    4.85    4.85     
5.2    5    5    4.5    5    5    4.5    5.1   
5.2    5    5    4.5    5    5    4.5    5.1   
3.6    3.6    4    2.15    2.15    2.15    3.6    3.6   
1    1    1    1    1    1    1    1   
  3500    3500    3500    3500    3500    3500     
  3500    3500    3500    3500    3500    3500     
0.02    0.02    0.05    0.023    0.02    0.02    0.02    0.02   
Enable
Light Load Efficiency
Load Disconnect   
Enable
Light Load Efficiency
Load Disconnect   
Enable
Light Load Efficiency
Load Disconnect
Synchronous Rectification   
Enable
Light Load Efficiency
Load Disconnect   
Enable
Light Load Efficiency
Load Disconnect   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Load Disconnect   
Enable
Light Load Efficiency
Load Disconnect   
90    100    100    100    100      100    90   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
DSBGA    DSBGA    DSBGA    DSBGA    DSBGA    DSBGA    DSBGA    DSBGA   

特色工具和软件

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WEBENCH® Designer TPS612592

  最小   最大 范围
输入电压  V 2.65 to 4.85V
输出电压  V 5.2 to 5.2V
输出电流  A ≤ 3.3A
环境温度  °C -40 to 85°C


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