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TI(德州仪器) TPS61221
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  • TI(德州仪器) TPS61221
  • TI(德州仪器) TPS61221
  • TI(德州仪器) TPS61221
  • TI(德州仪器) TPS61221
  • TI(德州仪器) TPS61221
  • TI(德州仪器) TPS61221
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TPS61221

TPS61221

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具有 5.5μA 静态电流的 0.7V 输入电压、3.3V 固定输出电压升压转换器

产品详情
  • 说明
  • 特性
  • 参数
  • 封装 | 引脚 | 尺寸

The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.

  • Up to 95% Efficiency at Typical Operating
    Conditions
  • 5.5 µA Quiescent Current
  • Startup Into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 5.5 V
  • Pass-Through Function during Shutdown
  • Minimum Switching Current 200 mA
  • Protections:
    • Output Overvoltage
    • Overtemperature
    • Input Undervoltage Lockout
  • Adjustable Output Voltage from 1.8 V to 6 V
  • Fixed Output Voltage Versions
  • Small 6-pin SC-70 Package
TopologyBoost
Vin (min) (V)0.7
Vin (max) (V)5.5
Vout (min) (V)3.3
Vout (max) (V)3.3
Switch current limit (typ) (A)0.4
TypeConverter
Regulated outputs (#)1
Switching frequency (min) (kHz)500
Switching frequency (max) (kHz)2000
Iq (typ) (mA)0.005
FeaturesSynchronous Rectification
Duty cycle (max) (%)90
Operating temperature range (°C)-40 to 85
RatingCatalog
SOT-SC70 (DCK)64.2 mm² 2 x 2.1
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