The REG71055 is a switched capacitor voltage converter
that produces a regulated, low-ripple output voltage from
an unregulated input voltage. Input supply voltage
of 3.0 V to 5.5 V makes the REG71055 ideal for a variety of
battery sources, such as single-cell Li-Ion, or two- and three-cell nickel- or alkaline-based chemistries.
The input voltage may vary below the output
voltage and the output remains in regulation. It works
equally well for step-up applications without
the need for an inductor, providing low EMI dc/dc
conversion. The high switching frequency allows the use
of small surface-mount capacitors, saving board space
and reducing cost. The REG71055 is thermally protected and
current limited, protecting the load and the regulator during
fault conditions. Typical ground pin current (quiescent
current) is 65 µA with no load, and less than 1 µA in
shutdown mode.
- Qualified for Automotive Applications
- Input Voltage Range: 3.0 V to 5.5 V
- Automatic Step-Up Operation
- Low Input Current Ripple
- Low Output Voltage Ripple
- Minimum Number of External Components, No Inductors
- 1-MHz Internal Oscillator Allows Small Capacitors
- Shutdown Mode
- Thermal and Current Limit Protection
- 5.5-V Output Voltage
- Small TSOT23-6 (DDC) Package
| Vin (min) (V) | 3 |
| Vin (max) (V) | 5.5 |
| Vout (min) (V) | 5.5 |
| Vout (max) (V) | 5.5 |
| Iout (max) (A) | 0.06 |
| Regulated outputs (#) | 1 |
| Switching frequency (min) (kHz) | 1000 |
| Switching frequency (max) (kHz) | 1000 |
| Iq (typ) (mA) | 0.065 |
| Features | Enable |
| Operating temperature range (°C) | -40 to 85 |
| Rating | Automotive |
| Type | Charge pump |