The TPS61071-Q1 device provides a power supply solution for products powered by lower-voltage DC rails or 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 75 mA, while using a single-cell alkaline, and discharge down to 0.9 V. The device can also generate 5 V at 200 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. The maximum peak current in the boost switch is limited typically to a value of 600 mA.
The TPS61071-Q1 output voltage is programmed by an external resistor divider. To minimize battery drain, disable the converter. During shutdown, the load disconnects from the battery. The device package is a 6-pin thin SOT package (DDC).
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS61071-Q1 | SOT (6) | 1.60 mm × 2.90 mm |
Changes from * Revision (May 2010) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | SW | I | Boost and rectifying switch input |
2 | GND | — | Device (IC) ground connection for logic and power |
3 | EN | I | Enable input (1/VBAT enabled, 0/GND disabled) |
4 | FB | I | Voltage feedback for programming the output voltage |
5 | VOUT | O | Boost converter output |
6 | VBAT | I | Supply voltage |