S1F76540 SeriesS1F76540 Series Charge Pumping DC/DC Converter & Voltage Regulator
DESCRIPTION
The S1F76540C0A0/M0A0 is a CMOS process, charge-pumping DC/DC converter and voltage regulator featuring the very high efficiency but low power consumption. An addition of four, three, or two external capacitors can generate four-, three- or two-time output voltage in negative direction than the input volt- age. Also, the built-in voltage regulator can set any output voltage of DC/DC converter and can output the regulated voltage using two external resistances. As the regulator output can have a negative temperature gradient that is required for LCD panels, it is optimum for the LCD panel power supply.
FEATURES
•Charge-pumping, DC-to-DC converter (four-, three- or two-time negative boosting)
•Built-in voltage regulator (regulated voltage output circuit)
•High power conversion
| efficiency | : 95% |
• | Low current consumption | : 130 μA (VI = –5.0 V |
| | during four-time |
| | boosting, Typ.) |
• | High output capacity | : 20 mA (Max.) |
• | Input voltages | : –2.4 to –5.5 V (during |
| | four-time boosting) |
| | : 2.4 to –7.3 V (during |
| | three-time boosting) |
| | : 2.4 to –11 V (during |
| | two-time boosting) |
• | DC/DC converter output | : Input voltage × 4 |
| voltage |
| | (Max.) |
• Built-in reference voltage for |
| high-precision regulator | : 1.5 ± 0.05 V (at CT0) |
•Temperature gradient function of regulator
output voltages | : – 0.04, – 0.15, – 0.35, |
| – 0.55 (%/°C) |
• Low standby current | : 5.0 μA |
(during power-off) |
•Power-off by the external signal
•Full built-in oscillator circuit
• Lineup | : S1F76540M0A0, |
| 16-pin SSOP |
| : S1F76540C0A0, |
| 16-pin DIP |
APPLICATIONS
•Power supply of medium- and small-capacity LCD panels
•Regulated power supply of battery driven devices
S1F70000 Series Technical Manual
