The TPS6126x devices provide a power supply solution for products powered by either
single or dual cell alkaline, NiCd, or NiMH batteries. Its unique advanced softstart makes it also
suitable for products powered by high output impedance battery types, like coin cells. Output
currents can go as high as 100 mA while using a single cell alkaline battery, and discharge it down
to 0.8 V or lower.
The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM)
controller using synchronous rectification to obtain maximum efficiency. At low load currents, the
converter enters Power Save Mode to ensure high efficiency over a wide load current range. The
maximum average current in the switches is limited to a programmable value which can go as high as
700 mA. The output voltage is programmable using an external resistor divider, or is fixed
internally on the chip. In addition, the average output current can be programmed as well. The
converter then regulates the programmed output voltage or the programmed output current, which ever
demands lower output power. The converter can be disabled to minimize battery drain. During
shutdown, the load is disconnected from the battery. The device is packaged in a 6-pin WSON (DRV)
package.
The TPS6126x devices provide a power supply solution for products powered by either
single or dual cell alkaline, NiCd, or NiMH batteries. Its unique advanced softstart makes it also
suitable for products powered by high output impedance battery types, like coin cells. Output
currents can go as high as 100 mA while using a single cell alkaline battery, and discharge it down
to 0.8 V or lower.
The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM)
controller using synchronous rectification to obtain maximum efficiency. At low load currents, the
converter enters Power Save Mode to ensure high efficiency over a wide load current range. The
maximum average current in the switches is limited to a programmable value which can go as high as
700 mA. The output voltage is programmable using an external resistor divider, or is fixed
internally on the chip. In addition, the average output current can be programmed as well. The
converter then regulates the programmed output voltage or the programmed output current, which ever
demands lower output power. The converter can be disabled to minimize battery drain. During
shutdown, the load is disconnected from the battery. The device is packaged in a 6-pin WSON (DRV)
package.