| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 8 Pin |
| Case/Package | WSON-8 |
| Number of Outputs | 1 Output |
| Output Current | 10 mA |
| Power Dissipation | 600 mW |
| Quiescent Current | 500 µA |
| Number of Regulated Outputs | 1 Output |
| Switching Frequency | 110 kHz |
| Topology | Buck |
| Input Voltage (Max) | 5.5 V |
| Input Voltage (Min) | 2.7 V |
| Operating Temperature (Max) | 105 ℃ |
| Operating Temperature (Min) | 40 ℃ |
| Power Dissipation (Max) | 600 mW |
| Input Voltage | 2.7V ~ 5.5V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tape & Reel (TR) |
| Size-Length | 3 mm |
| Size-Width | 3 mm |
| Size-Height | 0.8 mm |
| Operating Temperature | -40℃ ~ 85℃ (TA) |
The LM2687 CMOS Negative Regulated Switched Capacitor Voltage Inverter delivers a very low noise adjustable output for an input voltage in the range of +2.7V to +5.5V. Four low cost capacitors are used in this circuit to provide up to 10mA of output current. The regulated output for the LM2687 is adjustable between -1.5V and -5.2V. The LM2687 operates at 100 kHz (typical) switching frequency to reduce output resistance and voltage ripple. With an operating current of only 500 µA (charge pump power efficiency greater than 90% with most loads) and 0.05 µA typical shutdown current, the LM2687 provides ideal performance for cellular phone power amplifier bias and other low current, low noise negative voltage needs. The device comes in a small 8-pin MSOP or LLP package.
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