TPS61029 Adjustable, 1.8-A Switch, 96% Efficient Boost Converter with Down-Mode, QFN-10 | TI.com

TPS61029 (ACTIVE) Adjustable, 1.8-A Switch, 96% Efficient Boost Converter with Down-Mode, QFN-10

 

Description

The TPS6102x family of devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 200 mA while using a single-cell alkaline battery, and discharge it down to 0.9 V. The device can also be used for generating 5 V at 500 mA from a 3.3-V rail or a Li-Ion battery. The boost converter is based on a fixed-frequency, pulse width modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the converter enters the power save mode to maintain a high efficiency over a wide-load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum peak current in the boost switch is limited to a value of 800 mA, 1500 mA, or 1800 mA depending on the version of the device.

The TPS6102x devices keep the output voltage regulated even when the input voltage exceeds the nominal output voltage. The output voltage can be programmed by an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The device is packaged in a 10-pin VSON PowerPAD package measuring 3 mm x 3 mm (DRC).

Features

  • 96% Efficient Synchronous Boost Converter
  • Output Voltage Remains Regulated When Input
    Voltage Exceeds Nominal Output Voltage
  • Device Quiescent Current: 25 µA (Typ)
  • Input Voltage Range: 0.9 V to 6.5 V
  • Fixed and Adjustable Output Voltage Options
    Up to 5.5 V
  • Power Save Mode for Improved Efficiency at
    Low Output Power
  • Low Battery Comparator
  • Low EMI-Converter (Integrated Anti-ringing
    Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Small 3-mm × 3-mm VSON-10 Package

Parametrics

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Part number Order 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) Type Rating Package Group
TPS61029 Order now 0.9     5.5     1.8     5.5     1.8     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10    
TPS61020 Order now 0.9     6.5     1.8     5.5     1.5     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10    
TPS61024 Samples not available 0.9     6.5     3     3     1.5     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10    
TPS61025 Order now 0.9     6.5     3.3     3.3     1.5     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10    
TPS61026 Order now 0.9     5.5     5     5     1.8     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10    
TPS61027 Order now 0.9     6.5     5     5     1.5     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10