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).
| Topology | Boost |
| Vin (min) (V) | 0.9 |
| Vin (max) (V) | 5.5 |
| Vout (min) (V) | 1.8 |
| Vout (max) (V) | 5.5 |
| Switch current limit (typ) (A) | 0.7 |
| Type | Converter |
| Regulated outputs (#) | 1 |
| Switching frequency (min) (kHz) | 1200 |
| Switching frequency (max) (kHz) | 1200 |
| Iq (typ) (mA) | 0.019 |
| Features | Synchronous Rectification |
| Duty cycle (max) (%) | 100 |
| Operating temperature range (°C) | -40 to 105 |
| Rating | Automotive |
| SOT-23-THN (DDC) | 6 | 8.12 mm² 2.9 x 2.8 |
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